Document the ugliness of adding debug builder
Document the ugliness of adding debug builder

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