[INFO] cloning repository https://github.com/jinlf/waiir
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jinlf/waiir" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjinlf%2Fwaiir", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjinlf%2Fwaiir'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 267468c65e5e93faa8f5f958fdcab81619387d1d
[INFO] checking jinlf/waiir against master#0c478fdfe138a8b09744798c85fe2be657768b00 for pr-139419
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjinlf%2Fwaiir" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] [stderr] fatal: update_ref failed for ref 'HEAD': cannot update ref 'refs/heads/master': couldn't write '/workspace/builds/worker-3-tc1/source/.git/refs/heads/master.lock'


failed to checkout https://github.com/jinlf/waiir

Caused by:
    command failed: exit status: 128