Since5d66f9fd8ethis test has been upassing on Linaro's Windows on Arm lldb bot: https://lab.llvm.org/buildbot/#/builders/219/builds/4320 I can't explain exactly how that happened, but I do see a bunch of QEnvironment packets going by in that test. It is very likely that the order would have been different on Windows. Indeed, when it was xfailed back indf9051e7cfthe reason was not known either.