Fix save-analysis tests

Author: varkor

src/test/run-make-fulldeps/save-analysis-fail/foo.rs

@@ -1,7 +1,9 @@
-#![ crate_name = "test" ]
+#![crate_name = "test"]
 #![feature(box_syntax)]
 #![feature(rustc_private)]
 
+#![allow(unused_must_use)]
+
 extern crate graphviz;
 // A simple rust project
 

src/test/run-make-fulldeps/save-analysis-fail/krate2.rs

@@ -1,8 +1,8 @@
-#![ crate_name = "krate2" ]
-#![ crate_type = "lib" ]
+#![crate_name = "krate2"]
+#![crate_type = "lib"]
 
 use std::io::Write;
 
 pub fn hello() {
-    std::io::stdout().write_all(b"hello world!\n");
+    let _ = std::io::stdout().write_all(b"hello world!\n");
 }

src/test/run-make-fulldeps/save-analysis/foo.rs

@@ -1,9 +1,11 @@
-#![ crate_name = "test" ]
+#![crate_name = "test"]
 #![feature(box_syntax)]
 #![feature(rustc_private)]
 #![feature(associated_type_defaults)]
 #![feature(external_doc)]
 
+#![allow(unused_must_use)]
+
 extern crate graphviz;
 // A simple rust project
 

src/test/run-make-fulldeps/save-analysis/krate2.rs

@@ -4,5 +4,5 @@
 use std::io::Write;
 
 pub fn hello() {
-    std::io::stdout().write_all(b"hello world!\n");
+    let _ = std::io::stdout().write_all(b"hello world!\n");
 }