Bug#860508: qtcharts-opensource-src: FTBFS on hurd-i386: test hangs

["Aaron M. Ucko" <ucko@debian.org>]

Source: qtcharts-opensource-src
Version: 5.7.1-1
Severity: important
Justification: fails to build from source

The build of qtcharts-opensource-src for hurd-i386 (admittedly not a
release architecture) failed:

make[3]: Entering directory '/<<PKGBUILDDIR>>/tests/auto/qml-qtquicktest'
/<<PKGBUILDDIR>>/tests/auto/qml-qtquicktest/target_wrapper.sh  ./tst_qml-qtquicktest 
Unrecognized OpenGL version
Unrecognized OpenGL version
Makefile:279: recipe for target 'check' failed
make[3]: *** [check] Killed
[...]
E: Build killed with signal TERM after 180 minutes of inactivity
E: Build killed with signal KILL after 360 minutes of inactivity
E: Build killed with signal KILL after 540 minutes of inactivity
E: Build killed with signal KILL after 720 minutes of inactivity

Could you please take a look?

Thanks!