GitLab CI: workaround networking issue?

1 job for master in 1 minute and 8 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Test
failed #583
build

00:01:08

 
Name Stage Failure
failed
build Test There is an unknown failure, please try again
The following NEW packages will be installed:
build-essential bzip2 dpkg-dev fakeroot libalgorithm-diff-perl
libalgorithm-diff-xs-perl libalgorithm-merge-perl libdpkg-perl libfakeroot
libfile-fcntllock-perl libtimedate-perl make patch xz-utils
0 upgraded, 14 newly installed, 0 to remove and 7 not upgraded.
Need to get 3642 kB of archives.
After this operation, 7178 kB of additional disk space will be used.
Do you want to continue? [Y/n] Abort.
ERROR: Job failed: exit code 1