Hadrian testsuite has failures on devel2

In a fresh checkout of today's HEAD (8ff32124), building with Hadrian and then running the testsuite in devel2 produces these failures:

Unexpected failures:
   /run/user/1000/ghctest-gkrd1d57/test   spaces/testsuite/tests/ghci.debugger/scripts/break006.run           break006 [bad stderr] (ghci)
   /run/user/1000/ghctest-gkrd1d57/test   spaces/testsuite/tests/ghci.debugger/scripts/break006.run           break006 [bad stderr] (ghci-ext)
   /run/user/1000/ghctest-gkrd1d57/test   spaces/testsuite/tests/perf/compiler/MultiLayerModulesDefsGhci.run  MultiLayerModulesDefsGhci [bad exit code (99): test timeout] (ghci)
   /run/user/1000/ghctest-gkrd1d57/test   spaces/testsuite/tests/perf/compiler/MultiLayerModulesNoCode.run    MultiLayerModulesNoCode [bad exit code (99): test timeout] (ghci)
   /run/user/1000/ghctest-gkrd1d57/test   spaces/testsuite/tests/ghci/should_run/T15369.run                   T15369 [bad stdout] (ghci)
   /run/user/1000/ghctest-gkrd1d57/test   spaces/testsuite/tests/ado/T16135.run                               T16135 [exit code non-0] (normal)
   /run/user/1000/ghctest-gkrd1d57/test   spaces/testsuite/tests/ghci/T16525b/T16525b.run                     T16525b [bad stdout] (ghci)
   /run/user/1000/ghctest-gkrd1d57/test   spaces/testsuite/tests/stranal/should_compile/T9208.run             T9208 [exit code non-0] (optasm)
   /run/user/1000/ghctest-gkrd1d57/test   spaces/testsuite/tests/typecheck/should_fail/TcCoercibleFail.run    TcCoercibleFail [stderr mismatch] (normal)

I thought this wasn't going to happen any more. :(

To build, I used hadrian/build -j24 --flavour=devel2+werror --docs=none. To run the tests, I used hadrian/build -j24 --flavour=devel2+werror test --freeze1 --freeze2 --docs=none.