Attempt to fix #22628 by killing all stdtests
Attempt to fix #22628 by killing all stdtests

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