[INFO] cloning repository https://github.com/johnbchron/wgpu_exper
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/johnbchron/wgpu_exper" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjohnbchron%2Fwgpu_exper", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjohnbchron%2Fwgpu_exper'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f4a77a5c5e508fc2a1cc069a9da02b2dc799097e
[INFO] checking johnbchron/wgpu_exper against master#46424fb5054f211ec836c5c03159f92e46bb35ac for pr-139042
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjohnbchron%2Fwgpu_exper" "/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 'remote.origin.url' to '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjohnbchron%2Fwgpu_exper'


failed to checkout https://github.com/johnbchron/wgpu_exper

Caused by:
    command failed: exit status: 128