[INFO] cloning repository https://github.com/qnighy/advanced-algorithm2015-poisson
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/qnighy/advanced-algorithm2015-poisson" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fqnighy%2Fadvanced-algorithm2015-poisson", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fqnighy%2Fadvanced-algorithm2015-poisson'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 74ef94f6143ba30560de0bbe9135b68e91e25a20
[INFO] checking qnighy/advanced-algorithm2015-poisson against master#5dfe648b45659db8dd0a673a806bba3df84aa3af for pr-134273
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fqnighy%2Fadvanced-algorithm2015-poisson" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] error: failed to write new configuration file /workspace/builds/worker-6-tc1/source/.git/config.lock
[INFO] [stderr] fatal: could not set 'core.repositoryformatversion' to '0'


ExecutionFailed(ExitStatus(unix_wait_status(32768)))

failed to checkout https://github.com/qnighy/advanced-algorithm2015-poisson