[INFO] fetching crate mettle 0.1.0...
[INFO] checking mettle-0.1.0 against master#9a42c6509d399fd205917ebce474b31315c5d3e9 for pr-97427
[INFO] extracting crate mettle 0.1.0 into /workspace/builds/worker-39/source
[INFO] validating manifest of crates.io crate mettle 0.1.0 on toolchain 9a42c6509d399fd205917ebce474b31315c5d3e9
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9a42c6509d399fd205917ebce474b31315c5d3e9" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mettle 0.1.0
[INFO] finished tweaking crates.io crate mettle 0.1.0
[INFO] tweaked toml for crates.io crate mettle 0.1.0 written to /workspace/builds/worker-39/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9a42c6509d399fd205917ebce474b31315c5d3e9" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9a42c6509d399fd205917ebce474b31315c5d3e9" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-39/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-39/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:ac0d0aa6ec8ed129e241004a6179c99fa0d2616f50ba759c5b60bd26d0fafa02" "/opt/rustwide/cargo-home/bin/cargo" "+9a42c6509d399fd205917ebce474b31315c5d3e9" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 46f41a8332b8aca79ecd0b5de87616a88fc495502f3883388b9c3562e79e8c26
[INFO] running `Command { std: "docker" "start" "-a" "46f41a8332b8aca79ecd0b5de87616a88fc495502f3883388b9c3562e79e8c26", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "46f41a8332b8aca79ecd0b5de87616a88fc495502f3883388b9c3562e79e8c26", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "46f41a8332b8aca79ecd0b5de87616a88fc495502f3883388b9c3562e79e8c26", kill_on_drop: false }`
[INFO] [stdout] 46f41a8332b8aca79ecd0b5de87616a88fc495502f3883388b9c3562e79e8c26
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-39/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-39/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:ac0d0aa6ec8ed129e241004a6179c99fa0d2616f50ba759c5b60bd26d0fafa02" "/opt/rustwide/cargo-home/bin/cargo" "+9a42c6509d399fd205917ebce474b31315c5d3e9" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c4e9a03fa52917c11532f3d56c019094303b2355089d783a15c04d2c0c147183
[INFO] running `Command { std: "docker" "start" "-a" "c4e9a03fa52917c11532f3d56c019094303b2355089d783a15c04d2c0c147183", kill_on_drop: false }`
[INFO] [stderr]     Checking mettle v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.48s
[ERROR] error running command: no output for 300 seconds
[INFO] running `Command { std: "docker" "inspect" "c4e9a03fa52917c11532f3d56c019094303b2355089d783a15c04d2c0c147183", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c4e9a03fa52917c11532f3d56c019094303b2355089d783a15c04d2c0c147183", kill_on_drop: false }`
[INFO] [stdout] c4e9a03fa52917c11532f3d56c019094303b2355089d783a15c04d2c0c147183