Fixed 53359: E0432 unresolved import on the same line is now emiting one diagnostic

Addressed estebank's comments for 53359

src/test/ui/dollar-crate/dollar-crate-is-keyword-2.stderr

@@ -1,12 +1,3 @@
-error[E0432]: unresolved import `a::$crate`
-  --> $DIR/dollar-crate-is-keyword-2.rs:15:13
-   |
-LL |         use a::$crate; //~ ERROR unresolved import `a::$crate`
-   |             ^^^^^^^^^ no `$crate` in `a`
-...
-LL | m!();
-   | ----- in this macro invocation
-
 error[E0433]: failed to resolve. `$crate` in paths can only be used in start position
   --> $DIR/dollar-crate-is-keyword-2.rs:16:16
    |
@@ -16,6 +7,15 @@ LL |         use a::$crate::b; //~ ERROR `$crate` in paths can only be used in s
 LL | m!();
    | ----- in this macro invocation
 
+error[E0432]: unresolved import `a::$crate`
+  --> $DIR/dollar-crate-is-keyword-2.rs:15:13
+   |
+LL |         use a::$crate; //~ ERROR unresolved import `a::$crate`
+   |             ^^^^^^^^^ no `$crate` in `a`
+...
+LL | m!();
+   | ----- in this macro invocation
+
 error[E0433]: failed to resolve. `$crate` in paths can only be used in start position
   --> $DIR/dollar-crate-is-keyword-2.rs:17:21
    |

src/test/ui/issue-53565.rs

@@ -0,0 +1,14 @@
+// Copyright 2018 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+use std::time::{foo, bar, buzz};
+use std::time::{abc, def};
+fn main(){
+   println!("Hello World!");
+}

src/test/ui/issue-53565.stderr

@@ -0,0 +1,20 @@
+error[E0432]: unresolved imports `std::time::foo`, `std::time::bar`, `std::time::buzz`
+  --> $DIR/issue-53565.rs:10:17
+   |
+LL | use std::time::{foo, bar, buzz};
+   |                 ^^^  ^^^  ^^^^ no `buzz` in `time`
+   |                 |    |
+   |                 |    no `bar` in `time`
+   |                 no `foo` in `time`
+
+error[E0432]: unresolved imports `std::time::abc`, `std::time::def`
+  --> $DIR/issue-53565.rs:11:17
+   |
+LL | use std::time::{abc, def};
+   |                 ^^^  ^^^ no `def` in `time`
+   |                 |
+   |                 no `abc` in `time`
+
+error: aborting due to 2 previous errors
+
+For more information about this error, try `rustc --explain E0432`.