Update rustc --explain sentence

Author: GuillaumeGomez

src/librustc_errors/emitter.rs

@@ -124,18 +124,16 @@ impl Drop for EmitterWriter {
             if error_codes.len() > 1 {
                 let limit = if error_codes.len() > 9 { 9 } else { error_codes.len() };
                 writeln!(self.dst,
-                         "You've got a few errors: {}{}",
+                         "Some errors occurred: {}{}",
                          error_codes[..limit].join(", "),
-                         if error_codes.len() > 9 { "..." } else { "" }
+                         if error_codes.len() > 9 { "..." } else { "." }
                         ).expect("failed to give tips...");
                 writeln!(self.dst,
-                         "If you want more information on an error, try using \
-                          \"rustc --explain {}\"",
+                         "For more information about an error, try `rustc --explain {}`.",
                          &error_codes[0]).expect("failed to give tips...");
             } else {
                 writeln!(self.dst,
-                         "If you want more information on this error, try using \
-                          \"rustc --explain {}\"",
+                         "For more information about this error, try `rustc --explain {}`.",
                          &error_codes[0]).expect("failed to give tips...");
             }
             self.dst.flush().expect("failed to emit errors");

src/test/ui-fulldeps/lint-plugin-forbid-attrs.stderr

@@ -21,4 +21,4 @@ error[E0453]: allow(test_lint) overruled by outer forbid(test_lint)
 
 error: aborting due to 2 previous errors
 
-If you want more information on this error, try using "rustc --explain E0453"
+For more information about this error, try `rustc --explain E0453`.

src/test/ui-fulldeps/proc-macro/signature.stderr

@@ -12,4 +12,4 @@ error[E0308]: mismatched types
 
 error: aborting due to previous error
 
-If you want more information on this error, try using "rustc --explain E0308"
+For more information about this error, try `rustc --explain E0308`.

src/test/ui/anonymous-higher-ranked-lifetime.stderr

@@ -154,4 +154,4 @@ note: required by `h2`
 
 error: aborting due to 11 previous errors
 
-If you want more information on this error, try using "rustc --explain E0631"
+For more information about this error, try `rustc --explain E0631`.

src/test/ui/arbitrary-self-types-not-object-safe.stderr

@@ -17,4 +17,4 @@ error[E0038]: the trait `Foo` cannot be made into an object
 
 error: aborting due to 2 previous errors
 
-If you want more information on this error, try using "rustc --explain E0038"
+For more information about this error, try `rustc --explain E0038`.

src/test/ui/asm-out-assign-imm.stderr

@@ -9,4 +9,4 @@ error[E0384]: cannot assign twice to immutable variable `x`
 
 error: aborting due to previous error
 
-If you want more information on this error, try using "rustc --explain E0384"
+For more information about this error, try `rustc --explain E0384`.

src/test/ui/associated-const-impl-wrong-lifetime.stderr

@@ -15,4 +15,4 @@ note: the lifetime 'a as defined on the impl at 17:1...
 
 error: aborting due to previous error
 
-If you want more information on this error, try using "rustc --explain E0308"
+For more information about this error, try `rustc --explain E0308`.

src/test/ui/associated-const-impl-wrong-type.stderr

@@ -9,4 +9,4 @@ error[E0326]: implemented const `BAR` has an incompatible type for trait
 
 error: aborting due to previous error
 
-If you want more information on this error, try using "rustc --explain E0326"
+For more information about this error, try `rustc --explain E0326`.

src/test/ui/associated-type-projection-from-multiple-supertraits.stderr

@@ -42,5 +42,5 @@ error[E0221]: ambiguous associated type `Color` in bounds of `C`
 
 error: aborting due to 4 previous errors
 
-You've got a few errors: E0191, E0221
-If you want more information on an error, try using "rustc --explain E0191"
+Some errors occurred: E0191, E0221.
+For more information about an error, try `rustc --explain E0191`.

src/test/ui/associated-types-ICE-when-projecting-out-of-err.stderr

@@ -6,4 +6,4 @@ error[E0277]: the trait bound `(): Add<A>` is not satisfied
 
 error: aborting due to previous error
 
-If you want more information on this error, try using "rustc --explain E0277"
+For more information about this error, try `rustc --explain E0277`.