Fix quotation mark

src/librustc_driver/driver.rs

@@ -136,7 +136,7 @@ pub fn compile_input(trans: Box<TransCrate>,
                     if let Some(dir_path) = outputs.conflicts_with_dir() {
                         sess.err(&format!(
                             "the generated executable for the input file \"{}\" conflicts with the \
-                            existing directory \"{}\'",
+                            existing directory \"{}\"",
                             input_path.display(), dir_path.display()));
                         return Err(CompileIncomplete::Stopped);
                     }

src/test/run-make/output-filename-conflicts-with-directory/Makefile

@@ -4,4 +4,4 @@ all:
 	cp foo.rs $(TMPDIR)/foo.rs
 	mkdir $(TMPDIR)/foo
 	$(RUSTC) $(TMPDIR)/foo.rs 2>&1 \
-		| $(CGREP) -e "the generated executable for the input file \".*foo\.rs\" conflicts with the existing directory \".*foo\'"
+		| $(CGREP) -e "the generated executable for the input file \".*foo\.rs\" conflicts with the existing directory \".*foo\""