Make use $crate a hard error

mental32 · mental32 · commit 37f4535d49e4 · 2020-01-01T14:33:53.000+02:00
diff --git a/src/librustc_resolve/build_reduced_graph.rs b/src/librustc_resolve/build_reduced_graph.rs
@@ -472,12 +472,7 @@ impl<'a, 'b> BuildReducedGraphVisitor<'a, 'b> {
 
                         self.r
                             .session
-                            .struct_span_warn(item.span, "`$crate` may not be imported")
-                            .note(
-                                "`use $crate;` was erroneously allowed and \
-                                   will become a hard error in a future release",
-                            )
-                            .emit();
+                            .struct_span_err(item.span, "`$crate` may not be imported");
                     }
                 }
 

Original file line number	Diff line number	Diff line change
`@@ -472,12 +472,7 @@ impl<'a, 'b> BuildReducedGraphVisitor<'a, 'b> {`
`472`	`472`
`473`	`473`	`self.r`
`474`	`474`	`.session`
`475`		- .struct_span_warn(item.span, "`$crate` may not be imported")
`476`		`- .note(`
`477`		- "`use $crate;` was erroneously allowed and \
`478`		`- will become a hard error in a future release",`
`479`		`- )`
`480`		`- .emit();`
	`475`	+ .struct_span_err(item.span, "`$crate` may not be imported");
`481`	`476`	`}`
`482`	`477`	`}`
`483`	`478`