diff --git a/src/test/ui/borrowck/borrowck-anon-fields-struct.nll.stderr b/src/test/ui/borrowck/borrowck-anon-fields-struct.nll.stderr
index 0fe9106249be..963a89ed44da 100644
--- a/src/test/ui/borrowck/borrowck-anon-fields-struct.nll.stderr
+++ b/src/test/ui/borrowck/borrowck-anon-fields-struct.nll.stderr
@@ -1,27 +1,3 @@
-error[E0502]: cannot borrow `y` as immutable because it is also borrowed as mutable
-  --> $DIR/borrowck-anon-fields-struct.rs:23:19
-   |
-LL |         Y(ref mut a, _) => a
-   |           --------- mutable borrow occurs here
-...
-LL |     let b = match y {
-   |                   ^ immutable borrow occurs here
-...
-LL |     *a += 1;
-   |     ------- borrow later used here
-
-error[E0502]: cannot borrow `y` as immutable because it is also borrowed as mutable
-  --> $DIR/borrowck-anon-fields-struct.rs:38:19
-   |
-LL |         Y(ref mut a, _) => a
-   |           --------- mutable borrow occurs here
-...
-LL |     let b = match y {
-   |                   ^ immutable borrow occurs here
-...
-LL |     *a += 1;
-   |     ------- borrow later used here
-
 error[E0499]: cannot borrow `y.0` as mutable more than once at a time
   --> $DIR/borrowck-anon-fields-struct.rs:39:11
    |
@@ -34,7 +10,6 @@ LL |         Y(ref mut b, _) => b //~ ERROR cannot borrow
 LL |     *a += 1;
    |     ------- borrow later used here
 
-error: aborting due to 3 previous errors
+error: aborting due to previous error
 
-Some errors occurred: E0499, E0502.
-For more information about an error, try `rustc --explain E0499`.
+For more information about this error, try `rustc --explain E0499`.
diff --git a/src/test/ui/borrowck/borrowck-anon-fields-tuple.nll.stderr b/src/test/ui/borrowck/borrowck-anon-fields-tuple.nll.stderr
index 015174a9e457..f06822f7bb6e 100644
--- a/src/test/ui/borrowck/borrowck-anon-fields-tuple.nll.stderr
+++ b/src/test/ui/borrowck/borrowck-anon-fields-tuple.nll.stderr
@@ -1,27 +1,3 @@
-error[E0502]: cannot borrow `y` as immutable because it is also borrowed as mutable
-  --> $DIR/borrowck-anon-fields-tuple.rs:21:19
-   |
-LL |         (ref mut a, _) => a
-   |          --------- mutable borrow occurs here
-...
-LL |     let b = match y {
-   |                   ^ immutable borrow occurs here
-...
-LL |     *a += 1;
-   |     ------- borrow later used here
-
-error[E0502]: cannot borrow `y` as immutable because it is also borrowed as mutable
-  --> $DIR/borrowck-anon-fields-tuple.rs:36:19
-   |
-LL |         (ref mut a, _) => a
-   |          --------- mutable borrow occurs here
-...
-LL |     let b = match y {
-   |                   ^ immutable borrow occurs here
-...
-LL |     *a += 1;
-   |     ------- borrow later used here
-
 error[E0499]: cannot borrow `y.0` as mutable more than once at a time
   --> $DIR/borrowck-anon-fields-tuple.rs:37:10
    |
@@ -34,7 +10,6 @@ LL |         (ref mut b, _) => b //~ ERROR cannot borrow
 LL |     *a += 1;
    |     ------- borrow later used here
 
-error: aborting due to 3 previous errors
+error: aborting due to previous error
 
-Some errors occurred: E0499, E0502.
-For more information about an error, try `rustc --explain E0499`.
+For more information about this error, try `rustc --explain E0499`.
diff --git a/src/test/ui/borrowck/borrowck-anon-fields-variant.nll.stderr b/src/test/ui/borrowck/borrowck-anon-fields-variant.nll.stderr
index e4b9f2f2329c..05197205e814 100644
--- a/src/test/ui/borrowck/borrowck-anon-fields-variant.nll.stderr
+++ b/src/test/ui/borrowck/borrowck-anon-fields-variant.nll.stderr
@@ -1,27 +1,3 @@
-error[E0502]: cannot borrow `y` as immutable because it is also borrowed as mutable
-  --> $DIR/borrowck-anon-fields-variant.rs:26:19
-   |
-LL |       Foo::Y(ref mut a, _) => a,
-   |              --------- mutable borrow occurs here
-...
-LL |     let b = match y {
-   |                   ^ immutable borrow occurs here
-...
-LL |     *a += 1;
-   |     ------- borrow later used here
-
-error[E0502]: cannot borrow `y` as immutable because it is also borrowed as mutable
-  --> $DIR/borrowck-anon-fields-variant.rs:43:19
-   |
-LL |       Foo::Y(ref mut a, _) => a,
-   |              --------- mutable borrow occurs here
-...
-LL |     let b = match y {
-   |                   ^ immutable borrow occurs here
-...
-LL |     *a += 1;
-   |     ------- borrow later used here
-
 error[E0499]: cannot borrow `y.0` as mutable more than once at a time
   --> $DIR/borrowck-anon-fields-variant.rs:44:14
    |
@@ -34,7 +10,6 @@ LL |       Foo::Y(ref mut b, _) => b, //~ ERROR cannot borrow
 LL |     *a += 1;
    |     ------- borrow later used here
 
-error: aborting due to 3 previous errors
+error: aborting due to previous error
 
-Some errors occurred: E0499, E0502.
-For more information about an error, try `rustc --explain E0499`.
+For more information about this error, try `rustc --explain E0499`.
diff --git a/src/test/ui/borrowck/borrowck-borrow-from-owned-ptr.nll.stderr b/src/test/ui/borrowck/borrowck-borrow-from-owned-ptr.nll.stderr
index 08d66eb03445..603f4d63f7f4 100644
--- a/src/test/ui/borrowck/borrowck-borrow-from-owned-ptr.nll.stderr
+++ b/src/test/ui/borrowck/borrowck-borrow-from-owned-ptr.nll.stderr
@@ -28,17 +28,6 @@ LL |     let _bar2 = &mut foo.bar1;  //~ ERROR cannot borrow
 LL |     *bar1;
    |     ----- borrow later used here
 
-error[E0502]: cannot borrow `*foo` as immutable because it is also borrowed as mutable
-  --> $DIR/borrowck-borrow-from-owned-ptr.rs:72:11
-   |
-LL |     let bar1 = &mut foo.bar1;
-   |                ------------- mutable borrow occurs here
-LL |     match *foo {
-   |           ^^^^ immutable borrow occurs here
-...
-LL |     *bar1;
-   |     ----- borrow later used here
-
 error[E0499]: cannot borrow `foo.bar1` as mutable more than once at a time
   --> $DIR/borrowck-borrow-from-owned-ptr.rs:73:21
    |
@@ -121,7 +110,7 @@ LL |     let foo = make_foo();
 LL |     let bar1 = &mut foo.bar1; //~ ERROR cannot borrow
    |                ^^^^^^^^^^^^^ cannot borrow as mutable
 
-error: aborting due to 12 previous errors
+error: aborting due to 11 previous errors
 
 Some errors occurred: E0499, E0502, E0596.
 For more information about an error, try `rustc --explain E0499`.
diff --git a/src/test/ui/borrowck/borrowck-borrow-from-stack-variable.nll.stderr b/src/test/ui/borrowck/borrowck-borrow-from-stack-variable.nll.stderr
index 8d1b9ca672ac..3a215f2336ae 100644
--- a/src/test/ui/borrowck/borrowck-borrow-from-stack-variable.nll.stderr
+++ b/src/test/ui/borrowck/borrowck-borrow-from-stack-variable.nll.stderr
@@ -28,17 +28,6 @@ LL |     let _bar2 = &mut foo.bar1;  //~ ERROR cannot borrow
 LL |     *bar1;
    |     ----- borrow later used here
 
-error[E0502]: cannot borrow `foo` as immutable because it is also borrowed as mutable
-  --> $DIR/borrowck-borrow-from-stack-variable.rs:70:11
-   |
-LL |     let bar1 = &mut foo.bar1;
-   |                ------------- mutable borrow occurs here
-LL |     match foo {
-   |           ^^^ immutable borrow occurs here
-...
-LL |     *bar1;
-   |     ----- borrow later used here
-
 error[E0499]: cannot borrow `foo.bar1` as mutable more than once at a time
   --> $DIR/borrowck-borrow-from-stack-variable.rs:71:21
    |
@@ -121,7 +110,7 @@ LL |     let foo = make_foo();
 LL |     let bar1 = &mut foo.bar1; //~ ERROR cannot borrow
    |                ^^^^^^^^^^^^^ cannot borrow as mutable
 
-error: aborting due to 12 previous errors
+error: aborting due to 11 previous errors
 
 Some errors occurred: E0499, E0502, E0596.
 For more information about an error, try `rustc --explain E0499`.
diff --git a/src/test/ui/borrowck/borrowck-describe-lvalue.ast.nll.stderr b/src/test/ui/borrowck/borrowck-describe-lvalue.ast.nll.stderr
index ae706ef64dd2..e417dadf6df1 100644
--- a/src/test/ui/borrowck/borrowck-describe-lvalue.ast.nll.stderr
+++ b/src/test/ui/borrowck/borrowck-describe-lvalue.ast.nll.stderr
@@ -72,23 +72,12 @@ LL |              //[mir]~^ ERROR cannot use `h.0` because it was mutably borrow
 LL |         drop(x);
    |              - borrow later used here
 
-error[E0503]: cannot use `e` because it was mutably borrowed
-  --> $DIR/borrowck-describe-lvalue.rs:77:15
-   |
-LL |         let x = e.x();
-   |                 - borrow of `e` occurs here
-LL |         match e { //[mir]~ ERROR cannot use `e` because it was mutably borrowed
-   |               ^ use of borrowed `e`
-...
-LL |         drop(x);
-   |              - borrow later used here
-
 error[E0503]: cannot use `e.0` because it was mutably borrowed
   --> $DIR/borrowck-describe-lvalue.rs:78:20
    |
 LL |         let x = e.x();
    |                 - borrow of `e` occurs here
-LL |         match e { //[mir]~ ERROR cannot use `e` because it was mutably borrowed
+LL |         match e {
 LL |             Baz::X(value) => value
    |                    ^^^^^ use of borrowed `e`
 ...
@@ -139,23 +128,12 @@ LL |              //[mir]~^ ERROR cannot use `h.0` because it was mutably borrow
 LL |         drop(x);
    |              - borrow later used here
 
-error[E0503]: cannot use `*e` because it was mutably borrowed
-  --> $DIR/borrowck-describe-lvalue.rs:120:15
-   |
-LL |         let x = e.x();
-   |                 - borrow of `*e` occurs here
-LL |         match *e { //[mir]~ ERROR cannot use `*e` because it was mutably borrowed
-   |               ^^ use of borrowed `*e`
-...
-LL |         drop(x);
-   |              - borrow later used here
-
 error[E0503]: cannot use `e.0` because it was mutably borrowed
   --> $DIR/borrowck-describe-lvalue.rs:121:20
    |
 LL |         let x = e.x();
    |                 - borrow of `*e` occurs here
-LL |         match *e { //[mir]~ ERROR cannot use `*e` because it was mutably borrowed
+LL |         match *e {
 LL |             Baz::X(value) => value
    |                    ^^^^^ use of borrowed `*e`
 ...
@@ -173,41 +151,18 @@ LL |              //[mir]~^ ERROR cannot use `u.a` because it was mutably borrow
 LL |         drop(x);
    |              - borrow later used here
 
-error[E0503]: cannot use `v` because it was mutably borrowed
-  --> $DIR/borrowck-describe-lvalue.rs:139:15
-   |
-LL |         let x = &mut v;
-   |                 ------ borrow of `v` occurs here
-LL |         match v { //[mir]~ ERROR cannot use `v` because it was mutably borrowed
-   |               ^ use of borrowed `v`
-...
-LL |         drop(x);
-   |              - borrow later used here
-
 error[E0503]: cannot use `v[..]` because it was mutably borrowed
   --> $DIR/borrowck-describe-lvalue.rs:140:15
    |
 LL |         let x = &mut v;
    |                 ------ borrow of `v` occurs here
-LL |         match v { //[mir]~ ERROR cannot use `v` because it was mutably borrowed
+LL |         match v {
 LL |             &[x, _, .., _, _] => println!("{}", x),
    |               ^ use of borrowed `v`
 ...
 LL |         drop(x);
    |              - borrow later used here
 
-error[E0503]: cannot use `v` because it was mutably borrowed
-  --> $DIR/borrowck-describe-lvalue.rs:145:15
-   |
-LL |         let x = &mut v;
-   |                 ------ borrow of `v` occurs here
-...
-LL |         match v { //[mir]~ ERROR cannot use `v` because it was mutably borrowed
-   |               ^ use of borrowed `v`
-...
-LL |         drop(x);
-   |              - borrow later used here
-
 error[E0503]: cannot use `v[..]` because it was mutably borrowed
   --> $DIR/borrowck-describe-lvalue.rs:146:18
    |
@@ -220,18 +175,6 @@ LL |             &[_, x, .., _, _] => println!("{}", x),
 LL |         drop(x);
    |              - borrow later used here
 
-error[E0503]: cannot use `v` because it was mutably borrowed
-  --> $DIR/borrowck-describe-lvalue.rs:151:15
-   |
-LL |         let x = &mut v;
-   |                 ------ borrow of `v` occurs here
-...
-LL |         match v { //[mir]~ ERROR cannot use `v` because it was mutably borrowed
-   |               ^ use of borrowed `v`
-...
-LL |         drop(x);
-   |              - borrow later used here
-
 error[E0503]: cannot use `v[..]` because it was mutably borrowed
   --> $DIR/borrowck-describe-lvalue.rs:152:25
    |
@@ -244,18 +187,6 @@ LL |             &[_, _, .., x, _] => println!("{}", x),
 LL |         drop(x);
    |              - borrow later used here
 
-error[E0503]: cannot use `v` because it was mutably borrowed
-  --> $DIR/borrowck-describe-lvalue.rs:157:15
-   |
-LL |         let x = &mut v;
-   |                 ------ borrow of `v` occurs here
-...
-LL |         match v { //[mir]~ ERROR cannot use `v` because it was mutably borrowed
-   |               ^ use of borrowed `v`
-...
-LL |         drop(x);
-   |              - borrow later used here
-
 error[E0503]: cannot use `v[..]` because it was mutably borrowed
   --> $DIR/borrowck-describe-lvalue.rs:158:28
    |
@@ -268,41 +199,18 @@ LL |             &[_, _, .., _, x] => println!("{}", x),
 LL |         drop(x);
    |              - borrow later used here
 
-error[E0503]: cannot use `v` because it was mutably borrowed
-  --> $DIR/borrowck-describe-lvalue.rs:169:15
-   |
-LL |         let x = &mut v;
-   |                 ------ borrow of `v` occurs here
-LL |         match v { //[mir]~ ERROR cannot use `v` because it was mutably borrowed
-   |               ^ use of borrowed `v`
-...
-LL |         drop(x);
-   |              - borrow later used here
-
 error[E0503]: cannot use `v[..]` because it was mutably borrowed
   --> $DIR/borrowck-describe-lvalue.rs:170:15
    |
 LL |         let x = &mut v;
    |                 ------ borrow of `v` occurs here
-LL |         match v { //[mir]~ ERROR cannot use `v` because it was mutably borrowed
+LL |         match v {
 LL |             &[x..] => println!("{:?}", x),
    |               ^ use of borrowed `v`
 ...
 LL |         drop(x);
    |              - borrow later used here
 
-error[E0503]: cannot use `v` because it was mutably borrowed
-  --> $DIR/borrowck-describe-lvalue.rs:175:15
-   |
-LL |         let x = &mut v;
-   |                 ------ borrow of `v` occurs here
-...
-LL |         match v { //[mir]~ ERROR cannot use `v` because it was mutably borrowed
-   |               ^ use of borrowed `v`
-...
-LL |         drop(x);
-   |              - borrow later used here
-
 error[E0503]: cannot use `v[..]` because it was mutably borrowed
   --> $DIR/borrowck-describe-lvalue.rs:176:18
    |
@@ -315,18 +223,6 @@ LL |             &[_, x..] => println!("{:?}", x),
 LL |         drop(x);
    |              - borrow later used here
 
-error[E0503]: cannot use `v` because it was mutably borrowed
-  --> $DIR/borrowck-describe-lvalue.rs:181:15
-   |
-LL |         let x = &mut v;
-   |                 ------ borrow of `v` occurs here
-...
-LL |         match v { //[mir]~ ERROR cannot use `v` because it was mutably borrowed
-   |               ^ use of borrowed `v`
-...
-LL |         drop(x);
-   |              - borrow later used here
-
 error[E0503]: cannot use `v[..]` because it was mutably borrowed
   --> $DIR/borrowck-describe-lvalue.rs:182:15
    |
@@ -339,18 +235,6 @@ LL |             &[x.., _] => println!("{:?}", x),
 LL |         drop(x);
    |              - borrow later used here
 
-error[E0503]: cannot use `v` because it was mutably borrowed
-  --> $DIR/borrowck-describe-lvalue.rs:187:15
-   |
-LL |         let x = &mut v;
-   |                 ------ borrow of `v` occurs here
-...
-LL |         match v { //[mir]~ ERROR cannot use `v` because it was mutably borrowed
-   |               ^ use of borrowed `v`
-...
-LL |         drop(x);
-   |              - borrow later used here
-
 error[E0503]: cannot use `v[..]` because it was mutably borrowed
   --> $DIR/borrowck-describe-lvalue.rs:188:18
    |
@@ -363,23 +247,12 @@ LL |             &[_, x.., _] => println!("{:?}", x),
 LL |         drop(x);
    |              - borrow later used here
 
-error[E0503]: cannot use `e` because it was mutably borrowed
-  --> $DIR/borrowck-describe-lvalue.rs:201:15
-   |
-LL |         let x = &mut e;
-   |                 ------ borrow of `e` occurs here
-LL |         match e { //[mir]~ ERROR cannot use `e` because it was mutably borrowed
-   |               ^ use of borrowed `e`
-...
-LL |         drop(x);
-   |              - borrow later used here
-
 error[E0503]: cannot use `e` because it was mutably borrowed
   --> $DIR/borrowck-describe-lvalue.rs:202:13
    |
 LL |         let x = &mut e;
    |                 ------ borrow of `e` occurs here
-LL |         match e { //[mir]~ ERROR cannot use `e` because it was mutably borrowed
+LL |         match e {
 LL |             E::A(ref ax) =>
    |             ^^^^^^^^^^^^ use of borrowed `e`
 ...
@@ -391,7 +264,7 @@ error[E0502]: cannot borrow `e.0` as immutable because it is also borrowed as mu
    |
 LL |         let x = &mut e;
    |                 ------ mutable borrow occurs here
-LL |         match e { //[mir]~ ERROR cannot use `e` because it was mutably borrowed
+LL |         match e {
 LL |             E::A(ref ax) =>
    |                  ^^^^^^ immutable borrow occurs here
 ...
@@ -410,41 +283,18 @@ LL |             E::B { x: ref bx } =>
 LL |         drop(x);
    |              - borrow later used here
 
-error[E0503]: cannot use `s` because it was mutably borrowed
-  --> $DIR/borrowck-describe-lvalue.rs:220:15
-   |
-LL |         let x = &mut s;
-   |                 ------ borrow of `s` occurs here
-LL |         match s { //[mir]~ ERROR cannot use `s` because it was mutably borrowed
-   |               ^ use of borrowed `s`
-...
-LL |         drop(x);
-   |              - borrow later used here
-
 error[E0502]: cannot borrow `s.y.0` as immutable because it is also borrowed as mutable
   --> $DIR/borrowck-describe-lvalue.rs:221:22
    |
 LL |         let x = &mut s;
    |                 ------ mutable borrow occurs here
-LL |         match s { //[mir]~ ERROR cannot use `s` because it was mutably borrowed
+LL |         match s {
 LL |             S  { y: (ref y0, _), .. } =>
    |                      ^^^^^^ immutable borrow occurs here
 ...
 LL |         drop(x);
    |              - borrow later used here
 
-error[E0503]: cannot use `s` because it was mutably borrowed
-  --> $DIR/borrowck-describe-lvalue.rs:227:15
-   |
-LL |         let x = &mut s;
-   |                 ------ borrow of `s` occurs here
-...
-LL |         match s { //[mir]~ ERROR cannot use `s` because it was mutably borrowed
-   |               ^ use of borrowed `s`
-...
-LL |         drop(x);
-   |              - borrow later used here
-
 error[E0502]: cannot borrow `s.x.y` as immutable because it is also borrowed as mutable
   --> $DIR/borrowck-describe-lvalue.rs:228:28
    |
@@ -479,23 +329,12 @@ LL |         v[0].y;
 LL |         drop(x);
    |              - borrow later used here
 
-error[E0503]: cannot use `v` because it was mutably borrowed
-  --> $DIR/borrowck-describe-lvalue.rs:282:15
-   |
-LL |         let x = &mut v;
-   |                 ------ borrow of `v` occurs here
-LL |         match v { //[mir]~ ERROR cannot use `v` because it was mutably borrowed
-   |               ^ use of borrowed `v`
-...
-LL |         drop(x);
-   |              - borrow later used here
-
 error[E0502]: cannot borrow `v[..].x` as immutable because it is also borrowed as mutable
   --> $DIR/borrowck-describe-lvalue.rs:283:24
    |
 LL |         let x = &mut v;
    |                 ------ mutable borrow occurs here
-LL |         match v { //[mir]~ ERROR cannot use `v` because it was mutably borrowed
+LL |         match v {
 LL |             &[_, F {x: ref xf, ..}] => println!("{}", xf),
    |                        ^^^^^^ immutable borrow occurs here
 ...
@@ -534,7 +373,7 @@ LL |                 drop(x); //[ast]~ ERROR use of moved value: `x`
    |
    = note: move occurs because `x` has type `std::vec::Vec<i32>`, which does not implement the `Copy` trait
 
-error: aborting due to 46 previous errors
+error: aborting due to 32 previous errors
 
 Some errors occurred: E0382, E0499, E0502, E0503.
 For more information about an error, try `rustc --explain E0382`.
diff --git a/src/test/ui/borrowck/borrowck-describe-lvalue.ast.stderr b/src/test/ui/borrowck/borrowck-describe-lvalue.ast.stderr
index ca9b2dda8bcf..bc6385ffd920 100644
--- a/src/test/ui/borrowck/borrowck-describe-lvalue.ast.stderr
+++ b/src/test/ui/borrowck/borrowck-describe-lvalue.ast.stderr
@@ -27,7 +27,7 @@ error[E0503]: cannot use `e.0` because it was mutably borrowed
    |
 LL |         let x = e.x();
    |                 - borrow of `e` occurs here
-LL |         match e { //[mir]~ ERROR cannot use `e` because it was mutably borrowed
+LL |         match e {
 LL |             Baz::X(value) => value
    |                    ^^^^^ use of borrowed `e`
 
@@ -68,7 +68,7 @@ error[E0503]: cannot use `e.0` because it was mutably borrowed
    |
 LL |         let x = e.x();
    |                 - borrow of `*e` occurs here
-LL |         match *e { //[mir]~ ERROR cannot use `*e` because it was mutably borrowed
+LL |         match *e {
 LL |             Baz::X(value) => value
    |                    ^^^^^ use of borrowed `*e`
 
@@ -85,7 +85,7 @@ error[E0503]: cannot use `v[..]` because it was mutably borrowed
    |
 LL |         let x = &mut v;
    |                      - borrow of `v` occurs here
-LL |         match v { //[mir]~ ERROR cannot use `v` because it was mutably borrowed
+LL |         match v {
 LL |             &[x, _, .., _, _] => println!("{}", x),
    |               ^ use of borrowed `v`
 
@@ -121,7 +121,7 @@ error[E0503]: cannot use `v[..]` because it was mutably borrowed
    |
 LL |         let x = &mut v;
    |                      - borrow of `v` occurs here
-LL |         match v { //[mir]~ ERROR cannot use `v` because it was mutably borrowed
+LL |         match v {
 LL |             &[x..] => println!("{:?}", x),
    |               ^ use of borrowed `v`
 
@@ -157,7 +157,7 @@ error[E0502]: cannot borrow `e.0` as immutable because `e` is also borrowed as m
    |
 LL |         let x = &mut e;
    |                      - mutable borrow occurs here
-LL |         match e { //[mir]~ ERROR cannot use `e` because it was mutably borrowed
+LL |         match e {
 LL |             E::A(ref ax) =>
    |                  ^^^^^^ immutable borrow occurs here
 ...
@@ -181,7 +181,7 @@ error[E0502]: cannot borrow `s.y.0` as immutable because `s` is also borrowed as
    |
 LL |         let x = &mut s;
    |                      - mutable borrow occurs here
-LL |         match s { //[mir]~ ERROR cannot use `s` because it was mutably borrowed
+LL |         match s {
 LL |             S  { y: (ref y0, _), .. } =>
    |                      ^^^^^^ immutable borrow occurs here
 ...
diff --git a/src/test/ui/borrowck/borrowck-describe-lvalue.mir.stderr b/src/test/ui/borrowck/borrowck-describe-lvalue.mir.stderr
index ae706ef64dd2..e417dadf6df1 100644
--- a/src/test/ui/borrowck/borrowck-describe-lvalue.mir.stderr
+++ b/src/test/ui/borrowck/borrowck-describe-lvalue.mir.stderr
@@ -72,23 +72,12 @@ LL |              //[mir]~^ ERROR cannot use `h.0` because it was mutably borrow
 LL |         drop(x);
    |              - borrow later used here
 
-error[E0503]: cannot use `e` because it was mutably borrowed
-  --> $DIR/borrowck-describe-lvalue.rs:77:15
-   |
-LL |         let x = e.x();
-   |                 - borrow of `e` occurs here
-LL |         match e { //[mir]~ ERROR cannot use `e` because it was mutably borrowed
-   |               ^ use of borrowed `e`
-...
-LL |         drop(x);
-   |              - borrow later used here
-
 error[E0503]: cannot use `e.0` because it was mutably borrowed
   --> $DIR/borrowck-describe-lvalue.rs:78:20
    |
 LL |         let x = e.x();
    |                 - borrow of `e` occurs here
-LL |         match e { //[mir]~ ERROR cannot use `e` because it was mutably borrowed
+LL |         match e {
 LL |             Baz::X(value) => value
    |                    ^^^^^ use of borrowed `e`
 ...
@@ -139,23 +128,12 @@ LL |              //[mir]~^ ERROR cannot use `h.0` because it was mutably borrow
 LL |         drop(x);
    |              - borrow later used here
 
-error[E0503]: cannot use `*e` because it was mutably borrowed
-  --> $DIR/borrowck-describe-lvalue.rs:120:15
-   |
-LL |         let x = e.x();
-   |                 - borrow of `*e` occurs here
-LL |         match *e { //[mir]~ ERROR cannot use `*e` because it was mutably borrowed
-   |               ^^ use of borrowed `*e`
-...
-LL |         drop(x);
-   |              - borrow later used here
-
 error[E0503]: cannot use `e.0` because it was mutably borrowed
   --> $DIR/borrowck-describe-lvalue.rs:121:20
    |
 LL |         let x = e.x();
    |                 - borrow of `*e` occurs here
-LL |         match *e { //[mir]~ ERROR cannot use `*e` because it was mutably borrowed
+LL |         match *e {
 LL |             Baz::X(value) => value
    |                    ^^^^^ use of borrowed `*e`
 ...
@@ -173,41 +151,18 @@ LL |              //[mir]~^ ERROR cannot use `u.a` because it was mutably borrow
 LL |         drop(x);
    |              - borrow later used here
 
-error[E0503]: cannot use `v` because it was mutably borrowed
-  --> $DIR/borrowck-describe-lvalue.rs:139:15
-   |
-LL |         let x = &mut v;
-   |                 ------ borrow of `v` occurs here
-LL |         match v { //[mir]~ ERROR cannot use `v` because it was mutably borrowed
-   |               ^ use of borrowed `v`
-...
-LL |         drop(x);
-   |              - borrow later used here
-
 error[E0503]: cannot use `v[..]` because it was mutably borrowed
   --> $DIR/borrowck-describe-lvalue.rs:140:15
    |
 LL |         let x = &mut v;
    |                 ------ borrow of `v` occurs here
-LL |         match v { //[mir]~ ERROR cannot use `v` because it was mutably borrowed
+LL |         match v {
 LL |             &[x, _, .., _, _] => println!("{}", x),
    |               ^ use of borrowed `v`
 ...
 LL |         drop(x);
    |              - borrow later used here
 
-error[E0503]: cannot use `v` because it was mutably borrowed
-  --> $DIR/borrowck-describe-lvalue.rs:145:15
-   |
-LL |         let x = &mut v;
-   |                 ------ borrow of `v` occurs here
-...
-LL |         match v { //[mir]~ ERROR cannot use `v` because it was mutably borrowed
-   |               ^ use of borrowed `v`
-...
-LL |         drop(x);
-   |              - borrow later used here
-
 error[E0503]: cannot use `v[..]` because it was mutably borrowed
   --> $DIR/borrowck-describe-lvalue.rs:146:18
    |
@@ -220,18 +175,6 @@ LL |             &[_, x, .., _, _] => println!("{}", x),
 LL |         drop(x);
    |              - borrow later used here
 
-error[E0503]: cannot use `v` because it was mutably borrowed
-  --> $DIR/borrowck-describe-lvalue.rs:151:15
-   |
-LL |         let x = &mut v;
-   |                 ------ borrow of `v` occurs here
-...
-LL |         match v { //[mir]~ ERROR cannot use `v` because it was mutably borrowed
-   |               ^ use of borrowed `v`
-...
-LL |         drop(x);
-   |              - borrow later used here
-
 error[E0503]: cannot use `v[..]` because it was mutably borrowed
   --> $DIR/borrowck-describe-lvalue.rs:152:25
    |
@@ -244,18 +187,6 @@ LL |             &[_, _, .., x, _] => println!("{}", x),
 LL |         drop(x);
    |              - borrow later used here
 
-error[E0503]: cannot use `v` because it was mutably borrowed
-  --> $DIR/borrowck-describe-lvalue.rs:157:15
-   |
-LL |         let x = &mut v;
-   |                 ------ borrow of `v` occurs here
-...
-LL |         match v { //[mir]~ ERROR cannot use `v` because it was mutably borrowed
-   |               ^ use of borrowed `v`
-...
-LL |         drop(x);
-   |              - borrow later used here
-
 error[E0503]: cannot use `v[..]` because it was mutably borrowed
   --> $DIR/borrowck-describe-lvalue.rs:158:28
    |
@@ -268,41 +199,18 @@ LL |             &[_, _, .., _, x] => println!("{}", x),
 LL |         drop(x);
    |              - borrow later used here
 
-error[E0503]: cannot use `v` because it was mutably borrowed
-  --> $DIR/borrowck-describe-lvalue.rs:169:15
-   |
-LL |         let x = &mut v;
-   |                 ------ borrow of `v` occurs here
-LL |         match v { //[mir]~ ERROR cannot use `v` because it was mutably borrowed
-   |               ^ use of borrowed `v`
-...
-LL |         drop(x);
-   |              - borrow later used here
-
 error[E0503]: cannot use `v[..]` because it was mutably borrowed
   --> $DIR/borrowck-describe-lvalue.rs:170:15
    |
 LL |         let x = &mut v;
    |                 ------ borrow of `v` occurs here
-LL |         match v { //[mir]~ ERROR cannot use `v` because it was mutably borrowed
+LL |         match v {
 LL |             &[x..] => println!("{:?}", x),
    |               ^ use of borrowed `v`
 ...
 LL |         drop(x);
    |              - borrow later used here
 
-error[E0503]: cannot use `v` because it was mutably borrowed
-  --> $DIR/borrowck-describe-lvalue.rs:175:15
-   |
-LL |         let x = &mut v;
-   |                 ------ borrow of `v` occurs here
-...
-LL |         match v { //[mir]~ ERROR cannot use `v` because it was mutably borrowed
-   |               ^ use of borrowed `v`
-...
-LL |         drop(x);
-   |              - borrow later used here
-
 error[E0503]: cannot use `v[..]` because it was mutably borrowed
   --> $DIR/borrowck-describe-lvalue.rs:176:18
    |
@@ -315,18 +223,6 @@ LL |             &[_, x..] => println!("{:?}", x),
 LL |         drop(x);
    |              - borrow later used here
 
-error[E0503]: cannot use `v` because it was mutably borrowed
-  --> $DIR/borrowck-describe-lvalue.rs:181:15
-   |
-LL |         let x = &mut v;
-   |                 ------ borrow of `v` occurs here
-...
-LL |         match v { //[mir]~ ERROR cannot use `v` because it was mutably borrowed
-   |               ^ use of borrowed `v`
-...
-LL |         drop(x);
-   |              - borrow later used here
-
 error[E0503]: cannot use `v[..]` because it was mutably borrowed
   --> $DIR/borrowck-describe-lvalue.rs:182:15
    |
@@ -339,18 +235,6 @@ LL |             &[x.., _] => println!("{:?}", x),
 LL |         drop(x);
    |              - borrow later used here
 
-error[E0503]: cannot use `v` because it was mutably borrowed
-  --> $DIR/borrowck-describe-lvalue.rs:187:15
-   |
-LL |         let x = &mut v;
-   |                 ------ borrow of `v` occurs here
-...
-LL |         match v { //[mir]~ ERROR cannot use `v` because it was mutably borrowed
-   |               ^ use of borrowed `v`
-...
-LL |         drop(x);
-   |              - borrow later used here
-
 error[E0503]: cannot use `v[..]` because it was mutably borrowed
   --> $DIR/borrowck-describe-lvalue.rs:188:18
    |
@@ -363,23 +247,12 @@ LL |             &[_, x.., _] => println!("{:?}", x),
 LL |         drop(x);
    |              - borrow later used here
 
-error[E0503]: cannot use `e` because it was mutably borrowed
-  --> $DIR/borrowck-describe-lvalue.rs:201:15
-   |
-LL |         let x = &mut e;
-   |                 ------ borrow of `e` occurs here
-LL |         match e { //[mir]~ ERROR cannot use `e` because it was mutably borrowed
-   |               ^ use of borrowed `e`
-...
-LL |         drop(x);
-   |              - borrow later used here
-
 error[E0503]: cannot use `e` because it was mutably borrowed
   --> $DIR/borrowck-describe-lvalue.rs:202:13
    |
 LL |         let x = &mut e;
    |                 ------ borrow of `e` occurs here
-LL |         match e { //[mir]~ ERROR cannot use `e` because it was mutably borrowed
+LL |         match e {
 LL |             E::A(ref ax) =>
    |             ^^^^^^^^^^^^ use of borrowed `e`
 ...
@@ -391,7 +264,7 @@ error[E0502]: cannot borrow `e.0` as immutable because it is also borrowed as mu
    |
 LL |         let x = &mut e;
    |                 ------ mutable borrow occurs here
-LL |         match e { //[mir]~ ERROR cannot use `e` because it was mutably borrowed
+LL |         match e {
 LL |             E::A(ref ax) =>
    |                  ^^^^^^ immutable borrow occurs here
 ...
@@ -410,41 +283,18 @@ LL |             E::B { x: ref bx } =>
 LL |         drop(x);
    |              - borrow later used here
 
-error[E0503]: cannot use `s` because it was mutably borrowed
-  --> $DIR/borrowck-describe-lvalue.rs:220:15
-   |
-LL |         let x = &mut s;
-   |                 ------ borrow of `s` occurs here
-LL |         match s { //[mir]~ ERROR cannot use `s` because it was mutably borrowed
-   |               ^ use of borrowed `s`
-...
-LL |         drop(x);
-   |              - borrow later used here
-
 error[E0502]: cannot borrow `s.y.0` as immutable because it is also borrowed as mutable
   --> $DIR/borrowck-describe-lvalue.rs:221:22
    |
 LL |         let x = &mut s;
    |                 ------ mutable borrow occurs here
-LL |         match s { //[mir]~ ERROR cannot use `s` because it was mutably borrowed
+LL |         match s {
 LL |             S  { y: (ref y0, _), .. } =>
    |                      ^^^^^^ immutable borrow occurs here
 ...
 LL |         drop(x);
    |              - borrow later used here
 
-error[E0503]: cannot use `s` because it was mutably borrowed
-  --> $DIR/borrowck-describe-lvalue.rs:227:15
-   |
-LL |         let x = &mut s;
-   |                 ------ borrow of `s` occurs here
-...
-LL |         match s { //[mir]~ ERROR cannot use `s` because it was mutably borrowed
-   |               ^ use of borrowed `s`
-...
-LL |         drop(x);
-   |              - borrow later used here
-
 error[E0502]: cannot borrow `s.x.y` as immutable because it is also borrowed as mutable
   --> $DIR/borrowck-describe-lvalue.rs:228:28
    |
@@ -479,23 +329,12 @@ LL |         v[0].y;
 LL |         drop(x);
    |              - borrow later used here
 
-error[E0503]: cannot use `v` because it was mutably borrowed
-  --> $DIR/borrowck-describe-lvalue.rs:282:15
-   |
-LL |         let x = &mut v;
-   |                 ------ borrow of `v` occurs here
-LL |         match v { //[mir]~ ERROR cannot use `v` because it was mutably borrowed
-   |               ^ use of borrowed `v`
-...
-LL |         drop(x);
-   |              - borrow later used here
-
 error[E0502]: cannot borrow `v[..].x` as immutable because it is also borrowed as mutable
   --> $DIR/borrowck-describe-lvalue.rs:283:24
    |
 LL |         let x = &mut v;
    |                 ------ mutable borrow occurs here
-LL |         match v { //[mir]~ ERROR cannot use `v` because it was mutably borrowed
+LL |         match v {
 LL |             &[_, F {x: ref xf, ..}] => println!("{}", xf),
    |                        ^^^^^^ immutable borrow occurs here
 ...
@@ -534,7 +373,7 @@ LL |                 drop(x); //[ast]~ ERROR use of moved value: `x`
    |
    = note: move occurs because `x` has type `std::vec::Vec<i32>`, which does not implement the `Copy` trait
 
-error: aborting due to 46 previous errors
+error: aborting due to 32 previous errors
 
 Some errors occurred: E0382, E0499, E0502, E0503.
 For more information about an error, try `rustc --explain E0382`.
diff --git a/src/test/ui/borrowck/borrowck-describe-lvalue.rs b/src/test/ui/borrowck/borrowck-describe-lvalue.rs
index b821c7cfa34f..2ef08e75cfda 100644
--- a/src/test/ui/borrowck/borrowck-describe-lvalue.rs
+++ b/src/test/ui/borrowck/borrowck-describe-lvalue.rs
@@ -74,7 +74,7 @@ fn main() {
     {
         let mut e = Baz::X(2);
         let x = e.x();
-        match e { //[mir]~ ERROR cannot use `e` because it was mutably borrowed
+        match e {
             Baz::X(value) => value
             //[ast]~^ ERROR cannot use `e.0` because it was mutably borrowed
             //[mir]~^^ ERROR cannot use `e.0` because it was mutably borrowed
@@ -117,7 +117,7 @@ fn main() {
     {
         let mut e = Box::new(Baz::X(3));
         let x = e.x();
-        match *e { //[mir]~ ERROR cannot use `*e` because it was mutably borrowed
+        match *e {
             Baz::X(value) => value
             //[ast]~^ ERROR cannot use `e.0` because it was mutably borrowed
             //[mir]~^^ ERROR cannot use `e.0` because it was mutably borrowed
@@ -136,25 +136,25 @@ fn main() {
     {
         let mut v = &[1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
         let x = &mut v;
-        match v { //[mir]~ ERROR cannot use `v` because it was mutably borrowed
+        match v {
             &[x, _, .., _, _] => println!("{}", x),
                 //[ast]~^ ERROR cannot use `v[..]` because it was mutably borrowed
                 //[mir]~^^ ERROR cannot use `v[..]` because it was mutably borrowed
                             _ => panic!("other case"),
         }
-        match v { //[mir]~ ERROR cannot use `v` because it was mutably borrowed
+        match v {
             &[_, x, .., _, _] => println!("{}", x),
                 //[ast]~^ ERROR cannot use `v[..]` because it was mutably borrowed
                 //[mir]~^^ ERROR cannot use `v[..]` because it was mutably borrowed
                             _ => panic!("other case"),
         }
-        match v { //[mir]~ ERROR cannot use `v` because it was mutably borrowed
+        match v {
             &[_, _, .., x, _] => println!("{}", x),
                 //[ast]~^ ERROR cannot use `v[..]` because it was mutably borrowed
                 //[mir]~^^ ERROR cannot use `v[..]` because it was mutably borrowed
                             _ => panic!("other case"),
         }
-        match v { //[mir]~ ERROR cannot use `v` because it was mutably borrowed
+        match v {
             &[_, _, .., _, x] => println!("{}", x),
                 //[ast]~^ ERROR cannot use `v[..]` because it was mutably borrowed
                 //[mir]~^^ ERROR cannot use `v[..]` because it was mutably borrowed
@@ -166,25 +166,25 @@ fn main() {
     {
         let mut v = &[1, 2, 3, 4, 5];
         let x = &mut v;
-        match v { //[mir]~ ERROR cannot use `v` because it was mutably borrowed
+        match v {
             &[x..] => println!("{:?}", x),
                 //[ast]~^ ERROR cannot use `v[..]` because it was mutably borrowed
                 //[mir]~^^ ERROR cannot use `v[..]` because it was mutably borrowed
             _ => panic!("other case"),
         }
-        match v { //[mir]~ ERROR cannot use `v` because it was mutably borrowed
+        match v {
             &[_, x..] => println!("{:?}", x),
                 //[ast]~^ ERROR cannot use `v[..]` because it was mutably borrowed
                 //[mir]~^^ ERROR cannot use `v[..]` because it was mutably borrowed
             _ => panic!("other case"),
         }
-        match v { //[mir]~ ERROR cannot use `v` because it was mutably borrowed
+        match v {
             &[x.., _] => println!("{:?}", x),
                 //[ast]~^ ERROR cannot use `v[..]` because it was mutably borrowed
                 //[mir]~^^ ERROR cannot use `v[..]` because it was mutably borrowed
             _ => panic!("other case"),
         }
-        match v { //[mir]~ ERROR cannot use `v` because it was mutably borrowed
+        match v {
             &[_, x.., _] => println!("{:?}", x),
                 //[ast]~^ ERROR cannot use `v[..]` because it was mutably borrowed
                 //[mir]~^^ ERROR cannot use `v[..]` because it was mutably borrowed
@@ -198,7 +198,7 @@ fn main() {
 
         let mut e = E::A(3);
         let x = &mut e;
-        match e { //[mir]~ ERROR cannot use `e` because it was mutably borrowed
+        match e {
             E::A(ref ax) =>
                 //[ast]~^ ERROR cannot borrow `e.0` as immutable because `e` is also borrowed as mutable
                 //[mir]~^^ ERROR cannot borrow `e.0` as immutable because it is also borrowed as mutable
@@ -217,14 +217,14 @@ fn main() {
         struct S { x: F, y: (u32, u32), };
         let mut s = S { x: F { x: 1, y: 2}, y: (999, 998) };
         let x = &mut s;
-        match s { //[mir]~ ERROR cannot use `s` because it was mutably borrowed
+        match s {
             S  { y: (ref y0, _), .. } =>
                 //[ast]~^ ERROR cannot borrow `s.y.0` as immutable because `s` is also borrowed as mutable
                 //[mir]~^^ ERROR cannot borrow `s.y.0` as immutable because it is also borrowed as mutable
                 println!("y0: {:?}", y0),
             _ => panic!("other case"),
         }
-        match s { //[mir]~ ERROR cannot use `s` because it was mutably borrowed
+        match s {
             S  { x: F { y: ref x0, .. }, .. } =>
                 //[ast]~^ ERROR cannot borrow `s.x.y` as immutable because `s` is also borrowed as mutable
                 //[mir]~^^ ERROR cannot borrow `s.x.y` as immutable because it is also borrowed as mutable
@@ -279,7 +279,7 @@ fn main() {
         struct F {x: u32, y: u32};
         let mut v = &[F{x: 1, y: 2}, F{x: 3, y: 4}];
         let x = &mut v;
-        match v { //[mir]~ ERROR cannot use `v` because it was mutably borrowed
+        match v {
             &[_, F {x: ref xf, ..}] => println!("{}", xf),
             //[mir]~^ ERROR cannot borrow `v[..].x` as immutable because it is also borrowed as mutable
             // No errors in AST
diff --git a/src/test/ui/borrowck/borrowck-match-already-borrowed.ast.nll.stderr b/src/test/ui/borrowck/borrowck-match-already-borrowed.ast.nll.stderr
index 8dec40520c4e..0853018bae94 100644
--- a/src/test/ui/borrowck/borrowck-match-already-borrowed.ast.nll.stderr
+++ b/src/test/ui/borrowck/borrowck-match-already-borrowed.ast.nll.stderr
@@ -1,20 +1,9 @@
-error[E0503]: cannot use `foo` because it was mutably borrowed
-  --> $DIR/borrowck-match-already-borrowed.rs:22:19
-   |
-LL |     let p = &mut foo;
-   |             -------- borrow of `foo` occurs here
-LL |     let _ = match foo { //[mir]~ ERROR [E0503]
-   |                   ^^^ use of borrowed `foo`
-...
-LL |     drop(p);
-   |          - borrow later used here
-
 error[E0503]: cannot use `foo` because it was mutably borrowed
   --> $DIR/borrowck-match-already-borrowed.rs:23:9
    |
 LL |     let p = &mut foo;
    |             -------- borrow of `foo` occurs here
-LL |     let _ = match foo { //[mir]~ ERROR [E0503]
+LL |     let _ = match foo {
 LL |         Foo::B => 1, //[mir]~ ERROR [E0503]
    |         ^^^^^^ use of borrowed `foo`
 ...
@@ -33,23 +22,12 @@ LL |         Foo::A(x) => x //[ast]~ ERROR [E0503]
 LL |     drop(p);
    |          - borrow later used here
 
-error[E0503]: cannot use `x` because it was mutably borrowed
-  --> $DIR/borrowck-match-already-borrowed.rs:35:19
-   |
-LL |     let r = &mut x;
-   |             ------ borrow of `x` occurs here
-LL |     let _ = match x { //[mir]~ ERROR [E0503]
-   |                   ^ use of borrowed `x`
-...
-LL |     drop(r);
-   |          - borrow later used here
-
 error[E0503]: cannot use `x` because it was mutably borrowed
   --> $DIR/borrowck-match-already-borrowed.rs:36:9
    |
 LL |     let r = &mut x;
    |             ------ borrow of `x` occurs here
-LL |     let _ = match x { //[mir]~ ERROR [E0503]
+LL |     let _ = match x {
 LL |         x => x + 1, //[ast]~ ERROR [E0503]
    |         ^ use of borrowed `x`
 ...
@@ -68,6 +46,6 @@ LL |         y => y + 2, //[ast]~ ERROR [E0503]
 LL |     drop(r);
    |          - borrow later used here
 
-error: aborting due to 6 previous errors
+error: aborting due to 4 previous errors
 
 For more information about this error, try `rustc --explain E0503`.
diff --git a/src/test/ui/borrowck/borrowck-match-already-borrowed.ast.stderr b/src/test/ui/borrowck/borrowck-match-already-borrowed.ast.stderr
index 2e49f90a1699..5ba2f26e2203 100644
--- a/src/test/ui/borrowck/borrowck-match-already-borrowed.ast.stderr
+++ b/src/test/ui/borrowck/borrowck-match-already-borrowed.ast.stderr
@@ -12,7 +12,7 @@ error[E0503]: cannot use `x` because it was mutably borrowed
    |
 LL |     let r = &mut x;
    |                  - borrow of `x` occurs here
-LL |     let _ = match x { //[mir]~ ERROR [E0503]
+LL |     let _ = match x {
 LL |         x => x + 1, //[ast]~ ERROR [E0503]
    |         ^ use of borrowed `x`
 
diff --git a/src/test/ui/borrowck/borrowck-match-already-borrowed.mir.stderr b/src/test/ui/borrowck/borrowck-match-already-borrowed.mir.stderr
index 8dec40520c4e..0853018bae94 100644
--- a/src/test/ui/borrowck/borrowck-match-already-borrowed.mir.stderr
+++ b/src/test/ui/borrowck/borrowck-match-already-borrowed.mir.stderr
@@ -1,20 +1,9 @@
-error[E0503]: cannot use `foo` because it was mutably borrowed
-  --> $DIR/borrowck-match-already-borrowed.rs:22:19
-   |
-LL |     let p = &mut foo;
-   |             -------- borrow of `foo` occurs here
-LL |     let _ = match foo { //[mir]~ ERROR [E0503]
-   |                   ^^^ use of borrowed `foo`
-...
-LL |     drop(p);
-   |          - borrow later used here
-
 error[E0503]: cannot use `foo` because it was mutably borrowed
   --> $DIR/borrowck-match-already-borrowed.rs:23:9
    |
 LL |     let p = &mut foo;
    |             -------- borrow of `foo` occurs here
-LL |     let _ = match foo { //[mir]~ ERROR [E0503]
+LL |     let _ = match foo {
 LL |         Foo::B => 1, //[mir]~ ERROR [E0503]
    |         ^^^^^^ use of borrowed `foo`
 ...
@@ -33,23 +22,12 @@ LL |         Foo::A(x) => x //[ast]~ ERROR [E0503]
 LL |     drop(p);
    |          - borrow later used here
 
-error[E0503]: cannot use `x` because it was mutably borrowed
-  --> $DIR/borrowck-match-already-borrowed.rs:35:19
-   |
-LL |     let r = &mut x;
-   |             ------ borrow of `x` occurs here
-LL |     let _ = match x { //[mir]~ ERROR [E0503]
-   |                   ^ use of borrowed `x`
-...
-LL |     drop(r);
-   |          - borrow later used here
-
 error[E0503]: cannot use `x` because it was mutably borrowed
   --> $DIR/borrowck-match-already-borrowed.rs:36:9
    |
 LL |     let r = &mut x;
    |             ------ borrow of `x` occurs here
-LL |     let _ = match x { //[mir]~ ERROR [E0503]
+LL |     let _ = match x {
 LL |         x => x + 1, //[ast]~ ERROR [E0503]
    |         ^ use of borrowed `x`
 ...
@@ -68,6 +46,6 @@ LL |         y => y + 2, //[ast]~ ERROR [E0503]
 LL |     drop(r);
    |          - borrow later used here
 
-error: aborting due to 6 previous errors
+error: aborting due to 4 previous errors
 
 For more information about this error, try `rustc --explain E0503`.
diff --git a/src/test/ui/borrowck/borrowck-match-already-borrowed.rs b/src/test/ui/borrowck/borrowck-match-already-borrowed.rs
index c2136e62a7b2..cabce08429e5 100644
--- a/src/test/ui/borrowck/borrowck-match-already-borrowed.rs
+++ b/src/test/ui/borrowck/borrowck-match-already-borrowed.rs
@@ -19,7 +19,7 @@ enum Foo {
 fn match_enum() {
     let mut foo = Foo::B;
     let p = &mut foo;
-    let _ = match foo { //[mir]~ ERROR [E0503]
+    let _ = match foo {
         Foo::B => 1, //[mir]~ ERROR [E0503]
         _ => 2,
         Foo::A(x) => x //[ast]~ ERROR [E0503]
@@ -32,7 +32,7 @@ fn match_enum() {
 fn main() {
     let mut x = 1;
     let r = &mut x;
-    let _ = match x { //[mir]~ ERROR [E0503]
+    let _ = match x {
         x => x + 1, //[ast]~ ERROR [E0503]
                     //[mir]~^ ERROR [E0503]
         y => y + 2, //[ast]~ ERROR [E0503]
diff --git a/src/test/ui/consts/const-eval/conditional_array_execution.nll.stderr b/src/test/ui/consts/const-eval/conditional_array_execution.nll.stderr
deleted file mode 100644
index 86287e129972..000000000000
--- a/src/test/ui/consts/const-eval/conditional_array_execution.nll.stderr
+++ /dev/null
@@ -1,47 +0,0 @@
-warning: this constant cannot be used
-  --> $DIR/conditional_array_execution.rs:15:1
-   |
-LL | const FOO: u32 = [X - Y, Y - X][(X < Y) as usize];
-   | ^^^^^^^^^^^^^^^^^^-----^^^^^^^^^^^^^^^^^^^^^^^^^^^
-   |                   |
-   |                   attempt to subtract with overflow
-   |
-note: lint level defined here
-  --> $DIR/conditional_array_execution.rs:11:9
-   |
-LL | #![warn(const_err)]
-   |         ^^^^^^^^^
-
-error[E0080]: referenced constant has errors
-  --> $DIR/conditional_array_execution.rs:19:14
-   |
-LL | const FOO: u32 = [X - Y, Y - X][(X < Y) as usize];
-   |                   ----- attempt to subtract with overflow
-...
-LL |     println!("{}", FOO);
-   |              ^^^^
-
-error[E0080]: erroneous constant used
-  --> $DIR/conditional_array_execution.rs:19:14
-   |
-LL |     println!("{}", FOO);
-   |              ^^^^  --- referenced constant has errors
-
-error[E0080]: referenced constant has errors
-  --> $DIR/conditional_array_execution.rs:19:20
-   |
-LL | const FOO: u32 = [X - Y, Y - X][(X < Y) as usize];
-   |                   ----- attempt to subtract with overflow
-...
-LL |     println!("{}", FOO);
-   |                    ^^^
-
-error[E0080]: erroneous constant used
-  --> $DIR/conditional_array_execution.rs:19:20
-   |
-LL |     println!("{}", FOO);
-   |                    ^^^ referenced constant has errors
-
-error: aborting due to 4 previous errors
-
-For more information about this error, try `rustc --explain E0080`.
diff --git a/src/test/ui/consts/const-eval/issue-43197.nll.stderr b/src/test/ui/consts/const-eval/issue-43197.nll.stderr
deleted file mode 100644
index 732fe4598346..000000000000
--- a/src/test/ui/consts/const-eval/issue-43197.nll.stderr
+++ /dev/null
@@ -1,70 +0,0 @@
-warning: this constant cannot be used
-  --> $DIR/issue-43197.rs:20:5
-   |
-LL |     const X: u32 = 0-1;
-   |     ^^^^^^^^^^^^^^^---^
-   |                    |
-   |                    attempt to subtract with overflow
-   |
-note: lint level defined here
-  --> $DIR/issue-43197.rs:11:9
-   |
-LL | #![warn(const_err)]
-   |         ^^^^^^^^^
-
-warning: this constant cannot be used
-  --> $DIR/issue-43197.rs:22:5
-   |
-LL |     const Y: u32 = foo(0-1);
-   |     ^^^^^^^^^^^^^^^^^^^---^^
-   |                        |
-   |                        attempt to subtract with overflow
-
-error[E0080]: referenced constant has errors
-  --> $DIR/issue-43197.rs:24:14
-   |
-LL |     const X: u32 = 0-1;
-   |                    --- attempt to subtract with overflow
-...
-LL |     println!("{} {}", X, Y);
-   |              ^^^^^^^
-
-error[E0080]: erroneous constant used
-  --> $DIR/issue-43197.rs:24:14
-   |
-LL |     println!("{} {}", X, Y);
-   |              ^^^^^^^  - referenced constant has errors
-
-error[E0080]: referenced constant has errors
-  --> $DIR/issue-43197.rs:24:26
-   |
-LL |     const Y: u32 = foo(0-1);
-   |                        --- attempt to subtract with overflow
-LL |     //~^ WARN this constant cannot be used
-LL |     println!("{} {}", X, Y);
-   |                          ^
-
-error[E0080]: erroneous constant used
-  --> $DIR/issue-43197.rs:24:26
-   |
-LL |     println!("{} {}", X, Y);
-   |                          ^ referenced constant has errors
-
-error[E0080]: referenced constant has errors
-  --> $DIR/issue-43197.rs:24:23
-   |
-LL |     const X: u32 = 0-1;
-   |                    --- attempt to subtract with overflow
-...
-LL |     println!("{} {}", X, Y);
-   |                       ^
-
-error[E0080]: erroneous constant used
-  --> $DIR/issue-43197.rs:24:23
-   |
-LL |     println!("{} {}", X, Y);
-   |                       ^ referenced constant has errors
-
-error: aborting due to 6 previous errors
-
-For more information about this error, try `rustc --explain E0080`.
diff --git a/src/test/ui/consts/const-eval/issue-44578.nll.stderr b/src/test/ui/consts/const-eval/issue-44578.nll.stderr
deleted file mode 100644
index da040747991a..000000000000
--- a/src/test/ui/consts/const-eval/issue-44578.nll.stderr
+++ /dev/null
@@ -1,33 +0,0 @@
-error[E0080]: referenced constant has errors
-  --> $DIR/issue-44578.rs:35:14
-   |
-LL |     const AMT: usize = [A::AMT][(A::AMT > B::AMT) as usize];
-   |                        ------------------------------------ index out of bounds: the len is 1 but the index is 1
-...
-LL |     println!("{}", <Bar<u16, u8> as Foo>::AMT);
-   |              ^^^^
-
-error[E0080]: erroneous constant used
-  --> $DIR/issue-44578.rs:35:14
-   |
-LL |     println!("{}", <Bar<u16, u8> as Foo>::AMT);
-   |              ^^^^  -------------------------- referenced constant has errors
-
-error[E0080]: referenced constant has errors
-  --> $DIR/issue-44578.rs:35:20
-   |
-LL |     const AMT: usize = [A::AMT][(A::AMT > B::AMT) as usize];
-   |                        ------------------------------------ index out of bounds: the len is 1 but the index is 1
-...
-LL |     println!("{}", <Bar<u16, u8> as Foo>::AMT);
-   |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^
-
-error[E0080]: erroneous constant used
-  --> $DIR/issue-44578.rs:35:20
-   |
-LL |     println!("{}", <Bar<u16, u8> as Foo>::AMT);
-   |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^ referenced constant has errors
-
-error: aborting due to 4 previous errors
-
-For more information about this error, try `rustc --explain E0080`.
diff --git a/src/test/ui/issues/issue-27282-move-match-input-into-guard.rs b/src/test/ui/issues/issue-27282-move-match-input-into-guard.rs
index b3be36e41e65..909c369354bc 100644
--- a/src/test/ui/issues/issue-27282-move-match-input-into-guard.rs
+++ b/src/test/ui/issues/issue-27282-move-match-input-into-guard.rs
@@ -24,7 +24,6 @@ fn main() {
     match b {
         &mut false => {},
         _ if { (|| { let bar = b; *bar = false; })();
-                     //~^ ERROR cannot move out of `b` because it is borrowed [E0505]
                      false } => { },
         &mut true => { println!("You might think we should get here"); },
         //~^ ERROR use of moved value: `*b` [E0382]
diff --git a/src/test/ui/issues/issue-27282-move-match-input-into-guard.stderr b/src/test/ui/issues/issue-27282-move-match-input-into-guard.stderr
index 91c51bcd0582..0b783e37615e 100644
--- a/src/test/ui/issues/issue-27282-move-match-input-into-guard.stderr
+++ b/src/test/ui/issues/issue-27282-move-match-input-into-guard.stderr
@@ -1,29 +1,14 @@
-error[E0505]: cannot move out of `b` because it is borrowed
-  --> $DIR/issue-27282-move-match-input-into-guard.rs:26:17
-   |
-LL |     match b {
-   |           - borrow of `b` occurs here
-LL |         &mut false => {},
-LL |         _ if { (|| { let bar = b; *bar = false; })();
-   |                 ^^             - move occurs due to use in closure
-   |                 |
-   |                 move out of `b` occurs here
-...
-LL |         &mut true => { println!("You might think we should get here"); },
-   |         --------- borrow later used here
-
 error[E0382]: use of moved value: `*b`
-  --> $DIR/issue-27282-move-match-input-into-guard.rs:29:14
+  --> $DIR/issue-27282-move-match-input-into-guard.rs:28:14
    |
 LL |         _ if { (|| { let bar = b; *bar = false; })();
    |                 --             - variable moved due to use in closure
    |                 |
    |                 value moved into closure here
-...
+LL |                      false } => { },
 LL |         &mut true => { println!("You might think we should get here"); },
    |              ^^^^ value used here after move
 
-error: aborting due to 2 previous errors
+error: aborting due to previous error
 
-Some errors occurred: E0382, E0505.
-For more information about an error, try `rustc --explain E0382`.
+For more information about this error, try `rustc --explain E0382`.
diff --git a/src/test/ui/issues/issue-27282-mutate-before-diverging-arm-1.rs b/src/test/ui/issues/issue-27282-mutate-before-diverging-arm-1.rs
index b575f4ebce6c..2ebfb995d8ca 100644
--- a/src/test/ui/issues/issue-27282-mutate-before-diverging-arm-1.rs
+++ b/src/test/ui/issues/issue-27282-mutate-before-diverging-arm-1.rs
@@ -31,7 +31,7 @@ fn main() {
         &mut Some(&_) if {
             // ForceFnOnce needed to exploit #27282
             (|| { *x = None; drop(force_fn_once); })();
-            //~^ ERROR closure requires unique access to `x` but it is already borrowed [E0500]
+            //~^ ERROR cannot mutably borrow `x` in match guard [E0510]
             false
         } => {}
         &mut Some(&a) if { // this binds to garbage if we've corrupted discriminant
diff --git a/src/test/ui/issues/issue-27282-mutate-before-diverging-arm-1.stderr b/src/test/ui/issues/issue-27282-mutate-before-diverging-arm-1.stderr
index a9d9651fb2a3..2ecbb25fd3e4 100644
--- a/src/test/ui/issues/issue-27282-mutate-before-diverging-arm-1.stderr
+++ b/src/test/ui/issues/issue-27282-mutate-before-diverging-arm-1.stderr
@@ -1,17 +1,14 @@
-error[E0500]: closure requires unique access to `x` but it is already borrowed
+error[E0510]: cannot mutably borrow `x` in match guard
   --> $DIR/issue-27282-mutate-before-diverging-arm-1.rs:33:14
    |
 LL |     match x {
-   |           - borrow occurs here
+   |           - value is immutable in match guard
 ...
 LL |             (|| { *x = None; drop(force_fn_once); })();
-   |              ^^    - second borrow occurs due to use of `x` in closure
+   |              ^^    - borrow occurs due to use of `x` in closure
    |              |
-   |              closure construction occurs here
-...
-LL |         &mut Some(&a) if { // this binds to garbage if we've corrupted discriminant
-   |         ------------- borrow later used here
+   |              cannot mutably borrow
 
 error: aborting due to previous error
 
-For more information about this error, try `rustc --explain E0500`.
+For more information about this error, try `rustc --explain E0510`.
diff --git a/src/test/ui/issues/issue-27282-mutate-before-diverging-arm-2.rs b/src/test/ui/issues/issue-27282-mutate-before-diverging-arm-2.rs
index 866fed136850..6b50973e04d0 100644
--- a/src/test/ui/issues/issue-27282-mutate-before-diverging-arm-2.rs
+++ b/src/test/ui/issues/issue-27282-mutate-before-diverging-arm-2.rs
@@ -36,7 +36,7 @@ fn main() {
             if {
                 // ForceFnOnce needed to exploit #27282
                 (|| { *x = None; drop(force_fn_once); })();
-                //~^ ERROR closure requires unique access to `x` but it is already borrowed [E0500]
+                //~^ ERROR cannot mutably borrow `x` in match guard [E0510]
                 false
             } => {}
 
diff --git a/src/test/ui/issues/issue-27282-mutate-before-diverging-arm-2.stderr b/src/test/ui/issues/issue-27282-mutate-before-diverging-arm-2.stderr
index 582d0fd678c0..6feef95300e0 100644
--- a/src/test/ui/issues/issue-27282-mutate-before-diverging-arm-2.stderr
+++ b/src/test/ui/issues/issue-27282-mutate-before-diverging-arm-2.stderr
@@ -1,17 +1,14 @@
-error[E0500]: closure requires unique access to `x` but it is already borrowed
+error[E0510]: cannot mutably borrow `x` in match guard
   --> $DIR/issue-27282-mutate-before-diverging-arm-2.rs:38:18
    |
 LL |     match x {
-   |           - borrow occurs here
+   |           - value is immutable in match guard
 ...
 LL |                 (|| { *x = None; drop(force_fn_once); })();
-   |                  ^^    - second borrow occurs due to use of `x` in closure
+   |                  ^^    - borrow occurs due to use of `x` in closure
    |                  |
-   |                  closure construction occurs here
-...
-LL |         &mut Some(&2)
-   |         ------------- borrow later used here
+   |                  cannot mutably borrow
 
 error: aborting due to previous error
 
-For more information about this error, try `rustc --explain E0500`.
+For more information about this error, try `rustc --explain E0510`.
diff --git a/src/test/ui/nll/borrowed-match-issue-45045.rs b/src/test/ui/nll/borrowed-match-issue-45045.rs
index 4b95bbd5a052..8688bfa86dc6 100644
--- a/src/test/ui/nll/borrowed-match-issue-45045.rs
+++ b/src/test/ui/nll/borrowed-match-issue-45045.rs
@@ -21,7 +21,7 @@ fn main() {
     let mut e = Xyz::A;
     let f = &mut e;
     let g = f;
-    match e { //~ cannot use `e` because it was mutably borrowed [E0503]
+    match e {
         Xyz::A => println!("a"),
         //~^ cannot use `e` because it was mutably borrowed [E0503]
         Xyz::B => println!("b"),
diff --git a/src/test/ui/nll/borrowed-match-issue-45045.stderr b/src/test/ui/nll/borrowed-match-issue-45045.stderr
index acbba9ee1875..ded773165c6f 100644
--- a/src/test/ui/nll/borrowed-match-issue-45045.stderr
+++ b/src/test/ui/nll/borrowed-match-issue-45045.stderr
@@ -1,15 +1,3 @@
-error[E0503]: cannot use `e` because it was mutably borrowed
-  --> $DIR/borrowed-match-issue-45045.rs:24:11
-   |
-LL |     let f = &mut e;
-   |             ------ borrow of `e` occurs here
-LL |     let g = f;
-LL |     match e { //~ cannot use `e` because it was mutably borrowed [E0503]
-   |           ^ use of borrowed `e`
-...
-LL |     *g = Xyz::B;
-   |     ----------- borrow later used here
-
 error[E0503]: cannot use `e` because it was mutably borrowed
   --> $DIR/borrowed-match-issue-45045.rs:25:9
    |
@@ -22,6 +10,6 @@ LL |         Xyz::A => println!("a"),
 LL |     *g = Xyz::B;
    |     ----------- borrow later used here
 
-error: aborting due to 2 previous errors
+error: aborting due to previous error
 
 For more information about this error, try `rustc --explain E0503`.