[INFO] fetching crate markdown-toc 0.2.0...
[INFO] building markdown-toc-0.2.0 against try#3bbb5242a8064de4ca3af4036745ddf603ddaa85 for pr-101929
[INFO] extracting crate markdown-toc 0.2.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate markdown-toc 0.2.0 on toolchain 3bbb5242a8064de4ca3af4036745ddf603ddaa85
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3bbb5242a8064de4ca3af4036745ddf603ddaa85" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate markdown-toc 0.2.0
[INFO] finished tweaking crates.io crate markdown-toc 0.2.0
[INFO] tweaked toml for crates.io crate markdown-toc 0.2.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate crates.io crate markdown-toc 0.2.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3bbb5242a8064de4ca3af4036745ddf603ddaa85" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:e92e462e59ac3446a933540fd361ddeb5362c86f92d432d6a560a917a465022e" "/opt/rustwide/cargo-home/bin/cargo" "+3bbb5242a8064de4ca3af4036745ddf603ddaa85" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2f4cc903f882cd9e291da544b2ba2efd9da342b82bf289528b307587da9c0583
[INFO] running `Command { std: "docker" "start" "-a" "2f4cc903f882cd9e291da544b2ba2efd9da342b82bf289528b307587da9c0583", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2f4cc903f882cd9e291da544b2ba2efd9da342b82bf289528b307587da9c0583", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2f4cc903f882cd9e291da544b2ba2efd9da342b82bf289528b307587da9c0583", kill_on_drop: false }`
[INFO] [stdout] 2f4cc903f882cd9e291da544b2ba2efd9da342b82bf289528b307587da9c0583
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:e92e462e59ac3446a933540fd361ddeb5362c86f92d432d6a560a917a465022e" "/opt/rustwide/cargo-home/bin/cargo" "+3bbb5242a8064de4ca3af4036745ddf603ddaa85" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[ERROR] error running command: no output for 300 seconds