changed the language of the error message to make it more clear

Andrew · Andrew · commit 4e9615d88532 · 2019-06-09T14:31:39.000+08:00
diff --git a/src/librustc_typeck/astconv.rs b/src/librustc_typeck/astconv.rs
@@ -1011,7 +1011,7 @@ impl<'o, 'gcx: 'tcx, 'tcx> dyn AstConv<'gcx, 'tcx> + 'o {
 
         if regular_traits.is_empty() && auto_traits.is_empty() {
             span_err!(tcx.sess, span, E0224,
-                "at least one non-builtin trait, outside of &send, is required for an object type");
+                "at least one trait is required for an object type");
             return tcx.types.err;
         }
 

Original file line number	Diff line number	Diff line change
`@@ -1011,7 +1011,7 @@ impl<'o, 'gcx: 'tcx, 'tcx> dyn AstConv<'gcx, 'tcx> + 'o {`
`1011`	`1011`
`1012`	`1012`	`if regular_traits.is_empty() && auto_traits.is_empty() {`
`1013`	`1013`	`span_err!(tcx.sess, span, E0224,`
`1014`		`- "at least one non-builtin trait, outside of &send, is required for an object type");`
	`1014`	`+ "at least one trait is required for an object type");`
`1015`	`1015`	`return tcx.types.err;`
`1016`	`1016`	`}`
`1017`	`1017`