[INFO] cloning repository https://github.com/triflicacid/rust-3d-renderer
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/triflicacid/rust-3d-renderer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftriflicacid%2Frust-3d-renderer", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftriflicacid%2Frust-3d-renderer'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c9fa5f71e43d5d3619a4b809b4236dbc85e9f12e
[INFO] checking triflicacid/rust-3d-renderer against master#40daf23eeb711dadf140b2536e67e3ff4c999196 for pr-142287
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftriflicacid%2Frust-3d-renderer" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] [stderr] fatal: update_ref failed for ref 'HEAD': cannot update ref 'refs/heads/main': couldn't write '/workspace/builds/worker-7-tc1/source/.git/refs/heads/main.lock'


failed to checkout https://github.com/triflicacid/rust-3d-renderer

Caused by:
    command failed: exit status: 128