"where it didn't" -> "but didn't"

radix · web-flow · commit ac321a792a25 · 2017-01-14T22:00:04.000-06:00
diff --git a/src/librustc/diagnostics.rs b/src/librustc/diagnostics.rs
@@ -1618,7 +1618,7 @@ fn cookie() -> ! { // error: definition of an unknown language item: `cookie`
 "##,
 
 E0525: r##"
-A closure was used where it didn't implement the expected trait.
+A closure was used but didn't implement the expected trait.
 
 Erroneous code example:
 
