Test fixes from the rollup

Author: alexcrichton

src/doc/guide.md

@@ -2670,7 +2670,7 @@ $ cargo new modules --bin
 
 Let's double check our work by compiling:
 
-```{bash,ignore}
+```{bash,notrust}
 $ cargo run
    Compiling modules v0.0.1 (file:///home/you/projects/modules)
      Running `target/modules`

src/test/compile-fail/gated-bad-feature.rs

@@ -20,4 +20,4 @@
 #![feature = "foo"] //~ ERROR: malformed feature
 
 #![feature(test_removed_feature)] //~ ERROR: feature has been removed
-#![feature(test_accepted_feature)] //~ WARNING: feature has added
+#![feature(test_accepted_feature)] //~ WARNING: feature has been added