I've noticed QEMU Travis builds are failing recently, and they seem to happen only on the --enable-gprof jobs. I have enabled V=1 and noticed that the jobs are hanging inside test-qht-par.
Example here (look for "/qht/parallel/2threads-0%updates-1s"): https://travis-ci.org/ehabkost/qemu-hacks/jobs/465081311 Does anybody have any idea why? -- Eduardo