Merge pull request #2367 from rust-lang/rustc-pull

Rustc pull update

Author: tshepang

rust-version

@@ -1 +1 @@
-deb947971c8748f5c6203548ce4af9022f21eaf0
+0c33fe2c3d3eecadd17a84b110bb067288a64f1c

src/tests/ui.md

@@ -372,9 +372,9 @@ E.g. use `//@ dont-require-annotations: NOTE` to annotate notes selectively.
 Avoid using this directive for `ERROR`s and `WARN`ings, unless there's a serious reason, like
 target-dependent compiler output.
 
-Missing diagnostic kinds (`//~ message`) are currently accepted, but are being phased away.
-They will match any compiler output kind, but will not force exhaustive annotations for that kind.
-Prefer explicit kind and `//@ dont-require-annotations` to achieve the same effect.
+Some diagnostics are never required to be line-annotated, regardless of their kind or directives,
+for example secondary lines of multiline diagnostics,
+or ubiquitous diagnostics like `aborting due to N previous errors`.
 
 UI tests use the `-A unused` flag by default to ignore all unused warnings, as
 unused warnings are usually not the focus of a test. However, simple code