[Development] Qt CI reliability

[Jędrzej Nowacki]

> Determining architecture... ()
> make: Warning: File `../../../qt/qtbase/config.tests/arch/arch.pro' has
> modification time 1.3e+03 s in the future
> /home/qt/work/build/bin/qmake -qtconf /home/qt/work/build/bin/qt.conf
> -nocache -spec /home/qt/work/qt/qtbase/mkspecs/linux-g++ LIBS+=
> QMAKE_CXXFLAGS+= INCLUDEPATH+= CONFIG-=app_bundle -o Makefile
> ../../../qt/qtbase/config.tests/arch/arch.pro
> ...
> 
> agent:2016/05/05 13:07:20 build.go:221: Killed process after timeout (total
> time)
> agent:2016/05/05 13:07:20 agent.go:170: Build failed
> agent:2016/05/05 13:07:20 agent.go:127: ERROR building: Timeout after 5m0s:
> Maximum duration reached
> agent:2016/05/05 13:07:20 build.go:158: Error reading from stdout/err:
> Timeout after 5m0s: Maximum duration reached
> 
> Sean

Date and time on nodes was out of sync. Now they are still out of sync but it 
should not affect the build anymore, while unziping source code we change 
ctime and atime 30 years to the past. The "fix" is deployed, if you see the 
problem again ping me.

Cheers,
 Jędrek