[INFO] cloning repository https://github.com/tomp4l/riscv-os
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tomp4l/riscv-os" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftomp4l%2Friscv-os", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftomp4l%2Friscv-os'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 69a0a48c8bb1aa9cdd604f73ad3b20a04dcd3102
[INFO] checking tomp4l/riscv-os against master#cb06d12710575a0d7ff71d6fe108f3bcff4f9195 for pr-128425-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftomp4l%2Friscv-os" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-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-2-tc1/source/.git/refs/heads/main.lock'


failed to checkout https://github.com/tomp4l/riscv-os

Caused by:
    command failed: exit status: 128