message: cbfct: Take 3
  Third attempt to fix race condition in changing_bin_features_caches_targets.
  Previous fix for linux re-broke Windows
  (https://ci.appveyor.com/project/rust-lang-libs/cargo/build/1.0.5004)
diff: @@ -522,7 +522,7 @@ fn changing_bin_features_caches_targets() {
  let foo_proc = |name: &str| {
  let src = p.bin("foo");
  let dst = p.bin(name);
  - fs::hard_link(&src, &dst).expect("Failed to link foo");
  + fs::rename(&src, &dst).expect("Failed to rename foo");
  p.process(dst)
  };
  