runtime/cgo: pthread_create failed: Resource temporarily unavailable

It happens on Fedora 25 x86-64 (4.8.13-300.fc25.x86_64) Go: 1.7.4 bubblewrap: 0.1.4-5 libseccomp: 2.3.1-1 libseccomp-devel: 2.3.1-1 libseccomp-static: 2.3.1-1

Once compiled the sanboxed-tor-browser starts and open dialog for choosing channel and locale. No matter what is being chosen, it crashes with runtime/cgo: pthread_create failed: Resource temporarily unavailable, right after checking for available downloads. (see attached dump).

Also, once crashed it doesn't clean up /run/user/1000/sandboxed-tor-browser and it has to be removed manually in order to be started again.

Trac:
Username: vladimiroff

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