[INFO] cloning repository https://github.com/gaganjakhotiya/rust_playground
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gaganjakhotiya/rust_playground" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgaganjakhotiya%2Frust_playground", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgaganjakhotiya%2Frust_playground'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3e55ef2a8bc8e1d128fc1ec3fbfcfd2a58d3d27e
[INFO] checking gaganjakhotiya/rust_playground against master#0c478fdfe138a8b09744798c85fe2be657768b00 for pr-139419
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgaganjakhotiya%2Frust_playground" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-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/gaganjakhotiya/rust_playground

Caused by:
    command failed: exit status: 128