[INFO] cloning repository https://github.com/tostbot/a_game_with_bullshit
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tostbot/a_game_with_bullshit" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftostbot%2Fa_game_with_bullshit", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftostbot%2Fa_game_with_bullshit'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 204839a8778dab025a90d0f75d2f8ac8edc4fe0b
[INFO] testing tostbot/a_game_with_bullshit against master#ebf0cf75d368c035f4c7e7246d203bd469ee4a51 for pr-137940
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftostbot%2Fa_game_with_bullshit" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] [stderr] error: unable to write symref for HEAD: No space left on device
[INFO] [stderr] fatal: unable to update HEAD


failed to checkout https://github.com/tostbot/a_game_with_bullshit

Caused by:
    command failed: exit status: 128