Auto merge of #90724 - JohnTitor:rollup-zg0kbm3, r=JohnTitor

Rollup of 6 pull requests

Successful merges:

 - #87530 (Add comments regarding superfluous `!Sync` impls)
 - #90591 (treat illumos like solaris in failing ui tests which need it)
 - #90678 (Add some GATs-related regression tests)
 - #90688 (enable `dotprod` target feature in arm)
 - #90708 (Add a note about feature(explicit_generic_args_with_impl_trait) to the relevant error message)
 - #90720 (Update cargo)

Failed merges:

r? `@ghost`
`@rustbot` modify labels: rollup

src/test/ui/const-generics/impl-trait-with-const-arguments.stderr

@@ -3,6 +3,9 @@ error[E0632]: cannot provide explicit generic arguments when `impl Trait` is use
    |
 LL |     assert_eq!(f::<4usize>(Usizable), 20usize);
    |                    ^^^^^^ explicit generic argument not allowed
+   |
+   = note: see issue #83701 <https://github.com/rust-lang/rust/issues/83701> for more information
+   = help: add `#![feature(explicit_generic_args_with_impl_trait)]` to the crate attributes to enable
 
 error: aborting due to previous error
 

src/test/ui/generic-associated-types/issue-88595.rs

@@ -0,0 +1,24 @@
+#![feature(generic_associated_types)]
+#![feature(type_alias_impl_trait)]
+
+fn main() {}
+
+trait A<'a> {
+    type B<'b>: Clone
+    // FIXME(generic_associated_types): Remove one of the below bounds
+    // https://github.com/rust-lang/rust/pull/90678#discussion_r744976085
+    where
+        'a: 'b, Self: 'a, Self: 'b;
+
+    fn a(&'a self) -> Self::B<'a>;
+}
+
+struct C;
+
+impl<'a> A<'a> for C {
+    type B<'b> = impl Clone;
+    //~^ ERROR: lifetime bound not satisfied
+    //~| ERROR: could not find defining uses
+
+    fn a(&'a self) -> Self::B<'a> {} //~ ERROR: non-defining opaque type use in defining scope
+}

src/test/ui/generic-associated-types/issue-88595.stderr

@@ -0,0 +1,40 @@
+error[E0478]: lifetime bound not satisfied
+  --> $DIR/issue-88595.rs:19:5
+   |
+LL |     type B<'b> = impl Clone;
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+note: lifetime parameter instantiated with the lifetime `'a` as defined here
+  --> $DIR/issue-88595.rs:18:6
+   |
+LL | impl<'a> A<'a> for C {
+   |      ^^
+note: but lifetime parameter must outlive the lifetime `'b` as defined here
+  --> $DIR/issue-88595.rs:19:12
+   |
+LL |     type B<'b> = impl Clone;
+   |            ^^
+
+error: non-defining opaque type use in defining scope
+  --> $DIR/issue-88595.rs:23:23
+   |
+LL |     fn a(&'a self) -> Self::B<'a> {}
+   |                       ^^^^^^^^^^^
+   |
+note: lifetime used multiple times
+  --> $DIR/issue-88595.rs:18:6
+   |
+LL | impl<'a> A<'a> for C {
+   |      ^^
+LL |     type B<'b> = impl Clone;
+   |            ^^
+
+error: could not find defining uses
+  --> $DIR/issue-88595.rs:19:18
+   |
+LL |     type B<'b> = impl Clone;
+   |                  ^^^^^^^^^^
+
+error: aborting due to 3 previous errors
+
+For more information about this error, try `rustc --explain E0478`.

src/test/ui/generic-associated-types/issue-90014.rs

@@ -0,0 +1,22 @@
+// edition:2018
+
+#![feature(generic_associated_types)]
+#![feature(type_alias_impl_trait)]
+
+use std::future::Future;
+
+trait MakeFut {
+    type Fut<'a> where Self: 'a;
+    fn make_fut<'a>(&'a self) -> Self::Fut<'a>;
+}
+
+impl MakeFut for &'_ mut () {
+    type Fut<'a> = impl Future<Output = ()>;
+    //~^ ERROR: the type `&mut ()` does not fulfill the required lifetime
+
+    fn make_fut<'a>(&'a self) -> Self::Fut<'a> {
+        async { () }
+    }
+}
+
+fn main() {}

src/test/ui/generic-associated-types/issue-90014.stderr

@@ -0,0 +1,15 @@
+error[E0477]: the type `&mut ()` does not fulfill the required lifetime
+  --> $DIR/issue-90014.rs:14:5
+   |
+LL |     type Fut<'a> = impl Future<Output = ()>;
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+note: type must outlive the lifetime `'a` as defined here
+  --> $DIR/issue-90014.rs:14:14
+   |
+LL |     type Fut<'a> = impl Future<Output = ()>;
+   |              ^^
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0477`.

src/test/ui/impl-trait/explicit-generic-args-with-impl-trait/feature-gate.stderr

@@ -3,6 +3,9 @@ error[E0632]: cannot provide explicit generic arguments when `impl Trait` is use
    |
 LL |     foo::<str>("".to_string());
    |           ^^^ explicit generic argument not allowed
+   |
+   = note: see issue #83701 <https://github.com/rust-lang/rust/issues/83701> for more information
+   = help: add `#![feature(explicit_generic_args_with_impl_trait)]` to the crate attributes to enable
 
 error: aborting due to previous error
 

src/test/ui/impl-trait/issues/universal-issue-48703.stderr

@@ -3,6 +3,9 @@ error[E0632]: cannot provide explicit generic arguments when `impl Trait` is use
    |
 LL |     foo::<String>('a');
    |           ^^^^^^ explicit generic argument not allowed
+   |
+   = note: see issue #83701 <https://github.com/rust-lang/rust/issues/83701> for more information
+   = help: add `#![feature(explicit_generic_args_with_impl_trait)]` to the crate attributes to enable
 
 error: aborting due to previous error
 

src/test/ui/impl-trait/issues/universal-turbofish-in-method-issue-50950.stderr

@@ -5,6 +5,9 @@ LL |     evt.handle_event::<TestEvent, fn(TestEvent)>(|_evt| {
    |                        ^^^^^^^^^  ^^^^^^^^^^^^^ explicit generic argument not allowed
    |                        |
    |                        explicit generic argument not allowed
+   |
+   = note: see issue #83701 <https://github.com/rust-lang/rust/issues/83701> for more information
+   = help: add `#![feature(explicit_generic_args_with_impl_trait)]` to the crate attributes to enable
 
 error: aborting due to previous error
 

src/test/ui/intrinsics/intrinsic-alignment.rs

@@ -15,6 +15,7 @@ mod rusti {
           target_os = "emscripten",
           target_os = "freebsd",
           target_os = "fuchsia",
+          target_os = "illumos",
           target_os = "linux",
           target_os = "macos",
           target_os = "netbsd",

src/test/ui/structs-enums/rec-align-u64.rs

@@ -36,6 +36,7 @@ struct Outer {
           target_os = "emscripten",
           target_os = "freebsd",
           target_os = "fuchsia",
+          target_os = "illumos",
           target_os = "linux",
           target_os = "macos",
           target_os = "netbsd",

src/test/ui/synthetic-param.stderr

@@ -3,18 +3,27 @@ error[E0632]: cannot provide explicit generic arguments when `impl Trait` is use
    |
 LL |     func::<u8>(42);
    |            ^^ explicit generic argument not allowed
+   |
+   = note: see issue #83701 <https://github.com/rust-lang/rust/issues/83701> for more information
+   = help: add `#![feature(explicit_generic_args_with_impl_trait)]` to the crate attributes to enable
 
 error[E0632]: cannot provide explicit generic arguments when `impl Trait` is used in argument position
   --> $DIR/synthetic-param.rs:23:17
    |
 LL |     Foo::func::<u8>(42);
    |                 ^^ explicit generic argument not allowed
+   |
+   = note: see issue #83701 <https://github.com/rust-lang/rust/issues/83701> for more information
+   = help: add `#![feature(explicit_generic_args_with_impl_trait)]` to the crate attributes to enable
 
 error[E0632]: cannot provide explicit generic arguments when `impl Trait` is used in argument position
   --> $DIR/synthetic-param.rs:26:23
    |
 LL |     Bar::<i8>::func::<u8>(42);
    |                       ^^ explicit generic argument not allowed
+   |
+   = note: see issue #83701 <https://github.com/rust-lang/rust/issues/83701> for more information
+   = help: add `#![feature(explicit_generic_args_with_impl_trait)]` to the crate attributes to enable
 
 error: aborting due to 3 previous errors
 

src/test/ui/x86stdcall.rs

@@ -28,10 +28,11 @@ pub fn main() {
           target_os = "emscripten",
           target_os = "freebsd",
           target_os = "fuchsia",
+          target_os = "illumos",
           target_os = "linux",
           target_os = "macos",
           target_os = "netbsd",
           target_os = "openbsd",
-          target_os = "vxworks",
-          target_os = "solaris"))]
+          target_os = "solaris",
+          target_os = "vxworks"))]
 pub fn main() { }

src/tools/cargo

@@ -1 +1 @@
-Subproject commit 94ca096afbf25f670e76e07dca754fcfe27134be
+Subproject commit 2e2a16e983f597da62bc132eb191bc3276d4b1bb