Fix rust-lang/rust#35203 warning/error

TimNN · web-flow · commit 81dfab4450cc · 2016-10-26T17:25:15.000+02:00
rust-lang/rust#35203 made patterns in functions without body into a warn by default lint (which is being `deny`ed here).
diff --git a/tests/cargotest/support/mod.rs b/tests/cargotest/support/mod.rs
@@ -608,7 +608,7 @@ pub fn shell_writes<T: fmt::Display>(string: T) -> ShellWrites {
 }
 
 pub trait Tap {
-    fn tap<F: FnOnce(&mut Self)>(mut self, callback: F) -> Self;
+    fn tap<F: FnOnce(&mut Self)>(self, callback: F) -> Self;
 }
 
 impl<T> Tap for T {

Original file line number	Diff line number	Diff line change
`@@ -608,7 +608,7 @@ pub fn shell_writes<T: fmt::Display>(string: T) -> ShellWrites {`
`608`	`608`	`}`
`609`	`609`
`610`	`610`	`pub trait Tap {`
`611`		`- fn tap<F: FnOnce(&mut Self)>(mut self, callback: F) -> Self;`
	`611`	`+ fn tap<F: FnOnce(&mut Self)>(self, callback: F) -> Self;`
`612`	`612`	`}`
`613`	`613`
`614`	`614`	`impl<T> Tap for T {`