tst_QSharedPointer::invalidConstructs() is failing again on Windows 10

gent:2018/07/31 20:58:47 build.go:187: PASS   : tst_QSharedPointer::validConstructs()
agent:2018/07/31 21:00:16 build.go:187: QWARN  : tst_QSharedPointer::invalidConstructs(sanity-checking) QProcess: Destroyed while process ("c:\\Users\\qt\\work\\install\\bin\\qmake.exe") is still running.
agent:2018/07/31 21:00:16 build.go:187: QWARN  : tst_QSharedPointer::invalidConstructs(sanity-checking) Sanity checking failed
agent:2018/07/31 21:00:16 build.go:187: Code:
agent:2018/07/31 21:00:16 build.go:187: External test failed executing qmake with exit code 0
agent:2018/07/31 21:00:16 build.go:187: ==== standard error: ====
agent:2018/07/31 21:00:16 build.go:187: ### --- stderr from qmake --- ###
agent:2018/07/31 21:00:16 build.go:187: 
agent:2018/07/31 21:00:16 build.go:187: ==== standard output: ====
agent:2018/07/31 21:00:16 build.go:187: ### --- stdout from qmake --- ###
agent:2018/07/31 21:00:16 build.go:187: Info: creating stash file C:\Users\qt\AppData\Local\Temp\tst_qsharedpointer-gDfoqs\.qmake.stash?