2 files changed, 6 insertions, 12 deletions
diff --git a/src/compiletest/common.rs b/src/compiletest/common.rs
index c29f74d7418..8de8d9ce741 100644
--- a/src/compiletest/common.rs
+++ b/src/compiletest/common.rs
@@ -13,7 +13,7 @@ use std::fmt;
 use std::str::FromStr;
 use regex::Regex;
 
-#[derive(Clone, PartialEq)]
+#[derive(Clone, PartialEq, Debug)]
 pub enum Mode {
     CompileFail,
     RunFail,
@@ -43,9 +43,9 @@ impl FromStr for Mode {
     }
 }
 
-impl fmt::String for Mode {
+impl fmt::Display for Mode {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        fmt::String::fmt(match *self {
+        fmt::Display::fmt(match *self {
             CompileFail => "compile-fail",
             RunFail => "run-fail",
             RunPass => "run-pass",
@@ -58,12 +58,6 @@ impl fmt::String for Mode {
     }
 }
 
-impl fmt::Show for Mode {
-    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        fmt::String::fmt(self, f)
-    }
-}
-
 #[derive(Clone)]
 pub struct Config {
     // The library paths required for running the compiler
diff --git a/src/compiletest/runtest.rs b/src/compiletest/runtest.rs
index 5579479c5e5..d9debb88a5c 100644
--- a/src/compiletest/runtest.rs
+++ b/src/compiletest/runtest.rs
@@ -547,7 +547,7 @@ fn run_debuginfo_gdb_test(config: &Config, props: &TestProps, testfile: &Path) {
 
             // Add line breakpoints
             for line in breakpoint_lines.iter() {
-                script_str.push_str(&format!("break '{:?}':{}\n",
+                script_str.push_str(&format!("break '{}':{}\n",
                                              testfile.filename_display(),
                                              *line)[]);
             }
@@ -750,7 +750,7 @@ fn run_debuginfo_lldb_test(config: &Config, props: &TestProps, testfile: &Path)
             status: status,
             stdout: out,
             stderr: err,
-            cmdline: format!("{}", cmd)
+            cmdline: format!("{:?}", cmd)
         };
     }
 }
@@ -953,7 +953,7 @@ fn check_expected_errors(expected_errors: Vec<errors::ExpectedError> ,
     }
 
     let prefixes = expected_errors.iter().map(|ee| {
-        format!("{:?}:{}:", testfile.display(), ee.line)
+        format!("{}:{}:", testfile.display(), ee.line)
     }).collect::<Vec<String> >();
 
     #[cfg(windows)]