Don't flunk failed metric uploads. Add some step names
Don't flunk failed metric uploads. Add some step names

edunham/rust-buildbot,rust-lang/rust-buildbot,rust-lang/rust-buildbot,rust-lang-deprecated/rust-buildbot,rust-lang-deprecated/rust-buildbot,edunham/rust-buildbot,rust-lang/rust-buildbot,aidanhs/rust-buildbot,edunham/rust-buildbot,aidanhs/rust-buildbot,rust-lang-deprecated/rust-buildbot,aidanhs/rust-buildbot