Rustup to rust-lang/rust#93368

Change the trait_impls stdout file back, the `Display` impls have gotten
changed back in the meantime it seems.

rust-toolchain

@@ -1,4 +1,4 @@
 # NOTE: Keep in sync with nightly date on README
 [toolchain]
-channel = "nightly-2022-02-16"
+channel = "nightly-2022-02-26"
 components = ["llvm-tools-preview", "rustc-dev"]

src/changes.rs

@@ -202,7 +202,9 @@ impl PathChange {
 
         let msg = format!("path changes to `{}`", self.name.0);
         let mut builder = if cat == Breaking {
-            session.struct_span_err(self.def_span, &msg)
+            session
+                .struct_span_err(self.def_span, &msg)
+                .forget_guarantee()
         } else {
             session.struct_span_warn(self.def_span, &msg)
         };
@@ -903,7 +905,9 @@ impl<'tcx> Change<'tcx> {
 
         let msg = format!("{} changes in {}", self.max, self.name);
         let mut builder = if self.max == Breaking {
-            session.struct_span_err(self.new_span, &msg)
+            session
+                .struct_span_err(self.new_span, &msg)
+                .forget_guarantee()
         } else {
             session.struct_span_warn(self.new_span, &msg)
         };

tests/cases/trait_impls/stdout

@@ -1,5 +1,5 @@
 version bump: 1.0.0 -> (breaking) -> 2.0.0
-error: breaking changes in `<std::vec::Vec<T, std::alloc::Global> as old::Abc>`
+error: breaking changes in `<std::vec::Vec<T> as old::Abc>`
  --> trait_impls/old.rs:9:1
   |
 9 | impl<T> Abc for Vec<T> { }
@@ -19,15 +19,15 @@ error: breaking changes in `<old::Def as std::clone::Clone>`
    |
    = warning: trait impl specialized or removed (breaking)
 
-warning: technically breaking changes in `<std::boxed::Box<T, std::alloc::Global> as new::Abc>`
+warning: technically breaking changes in `<std::boxed::Box<T> as new::Abc>`
   --> trait_impls/new.rs:11:1
    |
 11 | impl<T: Clone> Abc for Box<T> { }
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = note: trait impl generalized or newly added (technically breaking)
 
-warning: technically breaking changes in `<std::boxed::Box<new::Def, std::alloc::Global> as new::Abc>`
+warning: technically breaking changes in `<std::boxed::Box<new::Def> as new::Abc>`
   --> trait_impls/new.rs:13:1
    |
 13 | impl Abc for Box<Def> { }
@@ -51,5 +51,4 @@ warning: technically breaking changes in `<std::cell::Cell<(bool, T)> as new::Ab
    |
    = note: trait impl generalized or newly added (technically breaking)
 
-error: aborting due to 2 previous errors; 4 warnings emitted
-
+error: aborting due to 2 previous errors; 4 warnings emitted