Remove another unused mut

diff --git a/src/cargo/util/read2.rs b/src/cargo/util/read2.rs
index 7871fdd876bd89f80efec3cc098e6a7c3e8a953e..b974ee855f0b94082a4fd6c3291c06d6ee3f413c 100644 (file)
--- a/src/cargo/util/read2.rs
+++ b/src/cargo/util/read2.rs
@@ -102,7 +102,7 @@ mod imp {
 
     pub fn read2(out_pipe: ChildStdout,
                  err_pipe: ChildStderr,
-                 mut data: &mut FnMut(bool, &mut Vec<u8>, bool)) -> io::Result<()> {
+                 data: &mut FnMut(bool, &mut Vec<u8>, bool)) -> io::Result<()> {
         let mut out = Vec::new();
         let mut err = Vec::new();