Remove trailing whitespace from error messages

Author: FabianWolff

compiler/rustc_errors/src/emitter.rs

@@ -954,7 +954,6 @@ impl EmitterWriter {
         //   |
         for pos in 0..=line_len {
             draw_col_separator(buffer, line_offset + pos + 1, width_offset - 2);
-            buffer.putc(line_offset + pos + 1, width_offset - 2, '|', Style::LineNumber);
         }
 
         // Write the horizontal lines for multiline annotations
@@ -1344,7 +1343,11 @@ impl EmitterWriter {
                 let buffer_msg_line_offset = buffer.num_lines();
 
                 // Add spacing line
-                draw_col_separator(&mut buffer, buffer_msg_line_offset, max_line_num_len + 1);
+                draw_col_separator_no_space(
+                    &mut buffer,
+                    buffer_msg_line_offset,
+                    max_line_num_len + 1,
+                );
 
                 // Then, the secondary file indicator
                 buffer.prepend(buffer_msg_line_offset + 1, "::: ", Style::LineNumber);

src/test/ui/associated-type-bounds/bad-bounds-on-assoc-in-trait.stderr

@@ -3,7 +3,7 @@ error[E0277]: `<<Self as Case1>::C as Iterator>::Item` cannot be sent between th
    |
 LL |     type C: Clone + Iterator<Item: Send + Iterator<Item: for<'a> Lam<&'a u8, App: Debug>> + Sync>;
    |                                    ^^^^ `<<Self as Case1>::C as Iterator>::Item` cannot be sent between threads safely
-   | 
+   |
   ::: $SRC_DIR/core/src/marker.rs:LL:COL
    |
 LL | pub unsafe auto trait Send {
@@ -20,7 +20,7 @@ error[E0277]: `<<Self as Case1>::C as Iterator>::Item` is not an iterator
    |
 LL |     type C: Clone + Iterator<Item: Send + Iterator<Item: for<'a> Lam<&'a u8, App: Debug>> + Sync>;
    |                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `<<Self as Case1>::C as Iterator>::Item` is not an iterator
-   | 
+   |
   ::: $SRC_DIR/core/src/iter/traits/iterator.rs:LL:COL
    |
 LL | pub trait Iterator {
@@ -37,7 +37,7 @@ error[E0277]: `<<Self as Case1>::C as Iterator>::Item` cannot be shared between
    |
 LL |     type C: Clone + Iterator<Item: Send + Iterator<Item: for<'a> Lam<&'a u8, App: Debug>> + Sync>;
    |                                                                                             ^^^^ `<<Self as Case1>::C as Iterator>::Item` cannot be shared between threads safely
-   | 
+   |
   ::: $SRC_DIR/core/src/marker.rs:LL:COL
    |
 LL | pub unsafe auto trait Sync {

src/test/ui/associated-type-bounds/bounds-on-assoc-in-trait.stderr

@@ -3,7 +3,7 @@ error[E0277]: `<<Self as Case1>::A as Iterator>::Item` doesn't implement `Debug`
    |
 LL |     type A: Iterator<Item: Debug>;
    |                            ^^^^^ `<<Self as Case1>::A as Iterator>::Item` cannot be formatted using `{:?}` because it doesn't implement `Debug`
-   | 
+   |
   ::: $SRC_DIR/core/src/fmt/mod.rs:LL:COL
    |
 LL | pub trait Debug {
@@ -20,7 +20,7 @@ error[E0277]: the trait bound `<<Self as Foo>::Out as Baz>::Assoc: Default` is n
    |
 LL | pub trait Foo { type Out: Baz<Assoc: Default>; }
    |                                      ^^^^^^^ the trait `Default` is not implemented for `<<Self as Foo>::Out as Baz>::Assoc`
-   | 
+   |
   ::: $SRC_DIR/core/src/default.rs:LL:COL
    |
 LL | pub trait Default: Sized {

src/test/ui/associated-types/defaults-wf.stderr

@@ -3,7 +3,7 @@ error[E0277]: the size for values of type `[u8]` cannot be known at compilation
    |
 LL |     type Ty = Vec<[u8]>;
    |               ^^^^^^^^^ doesn't have a size known at compile-time
-   | 
+   |
   ::: $SRC_DIR/alloc/src/vec/mod.rs:LL:COL
    |
 LL | pub struct Vec<T, #[unstable(feature = "allocator_api", issue = "32838")] A: Allocator = Global> {

src/test/ui/associated-types/trait-with-supertraits-needing-sized-self.stderr

@@ -3,7 +3,7 @@ error[E0277]: the size for values of type `Self` cannot be known at compilation
    |
 LL | trait ArithmeticOps: Add<Output=Self> + Sub<Output=Self> + Mul<Output=Self> + Div<Output=Self> {}
    |                      ^^^^^^^^^^^^^^^^ doesn't have a size known at compile-time
-   | 
+   |
   ::: $SRC_DIR/core/src/ops/arith.rs:LL:COL
    |
 LL | pub trait Add<Rhs = Self> {

src/test/ui/async-await/generator-desc.stderr

@@ -37,7 +37,7 @@ LL |     fun((async || {})(), (async || {})());
    |                   --     ^^^^^^^^^^^^^^^ expected `async` closure body, found a different `async` closure body
    |                   |
    |                   the expected `async` closure body
-   | 
+   |
   ::: $SRC_DIR/core/src/future/mod.rs:LL:COL
    |
 LL | pub const fn from_generator<T>(gen: T) -> impl Future<Output = T::Return>

src/test/ui/async-await/issue-72442.stderr

@@ -3,7 +3,7 @@ error[E0277]: the trait bound `Option<&str>: AsRef<Path>` is not satisfied
    |
 LL |             let mut f = File::open(path.to_str())?;
    |                                    ^^^^^^^^^^^^^ the trait `AsRef<Path>` is not implemented for `Option<&str>`
-   | 
+   |
   ::: $SRC_DIR/std/src/fs.rs:LL:COL
    |
 LL |     pub fn open<P: AsRef<Path>>(path: P) -> io::Result<File> {

src/test/ui/async-await/issues/issue-67893.stderr

@@ -6,7 +6,7 @@ LL | fn g(_: impl Send) {}
 ...
 LL |     g(issue_67893::run())
    |     ^ `MutexGuard<'_, ()>` cannot be sent between threads safely
-   | 
+   |
   ::: $DIR/auxiliary/issue_67893.rs:7:20
    |
 LL | pub async fn run() {

src/test/ui/async-await/pin-needed-to-poll.stderr

@@ -6,7 +6,7 @@ LL | struct Sleep;
 ...
 LL |         self.sleep.poll(cx)
    |                    ^^^^ method not found in `Sleep`
-   | 
+   |
   ::: $SRC_DIR/core/src/future/future.rs:LL:COL
    |
 LL |     fn poll(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output>;

src/test/ui/borrowck/move-error-snippets.stderr

@@ -6,7 +6,7 @@ LL |         let a = $c;
    |                 |
    |                 move occurs because `D` has type `A`, which does not implement the `Copy` trait
    |                 help: consider borrowing here: `&$c`
-   | 
+   |
   ::: $DIR/move-error-snippets.rs:21:1
    |
 LL | sss!();