Aug 10 16:32:16.532 ERRO this task or one of its parent failed!
Aug 10 16:32:16.532 ERRO failed to generate lockfile for xfix/advent-of-code-2017
Aug 10 16:32:16.532 ERRO caused by: unable to generate lockfile for xfix/advent-of-code-2017
Aug 10 16:32:16.532 ERRO caused by: command `"docker" "start" "-a" "b73184f5c419328dce04e51420a59b69f0d3fd4082511e30f66ba94ca8eff76a"` failed