[INFO] cloning repository https://github.com/singaraiona/slab
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/singaraiona/slab" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsingaraiona%2Fslab", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsingaraiona%2Fslab'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fcad9a7d8caa37c7d2977bdbc6f90fc380ef44ef
[INFO] checking singaraiona/slab against master#2d5a21f63c98f8a1d5f3c3af93bcb0a8af19af36 for pr-95819
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsingaraiona%2Fslab" "/workspace/builds/worker-24/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-24/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/singaraiona/slab on toolchain 2d5a21f63c98f8a1d5f3c3af93bcb0a8af19af36
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+2d5a21f63c98f8a1d5f3c3af93bcb0a8af19af36" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/singaraiona/slab
[INFO] finished tweaking git repo https://github.com/singaraiona/slab
[INFO] tweaked toml for git repo https://github.com/singaraiona/slab written to /workspace/builds/worker-24/source/Cargo.toml
[INFO] crate git repo https://github.com/singaraiona/slab already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+2d5a21f63c98f8a1d5f3c3af93bcb0a8af19af36" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+2d5a21f63c98f8a1d5f3c3af93bcb0a8af19af36" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bbe24da1ddbbf55853c4b1606c916ce5cd46087fe61f46a15edd552d356abd64
[INFO] running `Command { std: "docker" "start" "-a" "bbe24da1ddbbf55853c4b1606c916ce5cd46087fe61f46a15edd552d356abd64", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bbe24da1ddbbf55853c4b1606c916ce5cd46087fe61f46a15edd552d356abd64", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bbe24da1ddbbf55853c4b1606c916ce5cd46087fe61f46a15edd552d356abd64", kill_on_drop: false }`
[INFO] [stdout] bbe24da1ddbbf55853c4b1606c916ce5cd46087fe61f46a15edd552d356abd64
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/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" "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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+2d5a21f63c98f8a1d5f3c3af93bcb0a8af19af36" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1207f60ec4acc2803a8a8b1bdaa0aefe9be32768144f55ced3f62928548d2dce
[INFO] running `Command { std: "docker" "start" "-a" "1207f60ec4acc2803a8a8b1bdaa0aefe9be32768144f55ced3f62928548d2dce", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] running `Command { std: "docker" "inspect" "1207f60ec4acc2803a8a8b1bdaa0aefe9be32768144f55ced3f62928548d2dce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1207f60ec4acc2803a8a8b1bdaa0aefe9be32768144f55ced3f62928548d2dce", kill_on_drop: false }`
[INFO] [stdout] 1207f60ec4acc2803a8a8b1bdaa0aefe9be32768144f55ced3f62928548d2dce