[INFO] cloning repository https://github.com/grantkee/mdbook-frontmatter
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/grantkee/mdbook-frontmatter" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgrantkee%2Fmdbook-frontmatter", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgrantkee%2Fmdbook-frontmatter'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 992ceb605dcecea2e6aaf54a3be2de868afb4a67
[INFO] checking grantkee/mdbook-frontmatter against master#18a029cfe8e761533634bda8fe8a14e30280a21b for pr-139646
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgrantkee%2Fmdbook-frontmatter" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/grantkee/mdbook-frontmatter on toolchain 18a029cfe8e761533634bda8fe8a14e30280a21b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+18a029cfe8e761533634bda8fe8a14e30280a21b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/grantkee/mdbook-frontmatter
[INFO] finished tweaking git repo https://github.com/grantkee/mdbook-frontmatter
[INFO] tweaked toml for git repo https://github.com/grantkee/mdbook-frontmatter written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/grantkee/mdbook-frontmatter already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+18a029cfe8e761533634bda8fe8a14e30280a21b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+18a029cfe8e761533634bda8fe8a14e30280a21b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 08a47ece770c3ac878046056ab30b66581dfb61e6da16a4ac439a2dfd9ab2781
[INFO] running `Command { std: "docker" "start" "-a" "08a47ece770c3ac878046056ab30b66581dfb61e6da16a4ac439a2dfd9ab2781", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "08a47ece770c3ac878046056ab30b66581dfb61e6da16a4ac439a2dfd9ab2781", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "08a47ece770c3ac878046056ab30b66581dfb61e6da16a4ac439a2dfd9ab2781", kill_on_drop: false }`
[INFO] [stdout] 08a47ece770c3ac878046056ab30b66581dfb61e6da16a4ac439a2dfd9ab2781
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+18a029cfe8e761533634bda8fe8a14e30280a21b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 32ac55eaa1813438339a7c4ab0e99501f5c0f1f6397b99771b39696613a045e3
[INFO] running `Command { std: "docker" "start" "-a" "32ac55eaa1813438339a7c4ab0e99501f5c0f1f6397b99771b39696613a045e3", kill_on_drop: false }`
[INFO] [stderr] Error response from daemon: failed to create task for container: failed to create shim task: OCI runtime create failed: runc create failed: unable to start container process: error during container init: error mounting "/var/lib/crater-agent-workspace/rustup-home" to rootfs at "/opt/rustwide/rustup-home": mkdir /var/lib/docker/overlay2/e959e4c0b8fd2c58b43f4a487deb9ef160c54231d2abcf1b13b73abd733d3fd1/merged/opt/rustwide/rustup-home: no space left on device: unknown
[INFO] running `Command { std: "docker" "inspect" "32ac55eaa1813438339a7c4ab0e99501f5c0f1f6397b99771b39696613a045e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "32ac55eaa1813438339a7c4ab0e99501f5c0f1f6397b99771b39696613a045e3", kill_on_drop: false }`
[INFO] [stdout] 32ac55eaa1813438339a7c4ab0e99501f5c0f1f6397b99771b39696613a045e3