[INFO] cloning repository https://github.com/snowe2010/rust-procedural-macros-examples
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/snowe2010/rust-procedural-macros-examples" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsnowe2010%2Frust-procedural-macros-examples", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsnowe2010%2Frust-procedural-macros-examples'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3541e486a561a53c51f76d4c0b492c66a5a23d5f
[INFO] checking snowe2010/rust-procedural-macros-examples against master#18a029cfe8e761533634bda8fe8a14e30280a21b for pr-139646
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsnowe2010%2Frust-procedural-macros-examples" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] error: failed to write new configuration file /workspace/builds/worker-5-tc1/source/.git/config.lock
[INFO] [stderr] fatal: could not set 'core.repositoryformatversion' to '0'


failed to checkout https://github.com/snowe2010/rust-procedural-macros-examples

Caused by:
    command failed: exit status: 128