[INFO] fetching crate numkong 7.5.0...
[INFO] testing numkong-7.5.0 against try#dec9417b8611e34e787a3e4c37686b5131f9e5c5 for pr-154210-2
[INFO] extracting crate numkong 7.5.0 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate numkong 7.5.0
[INFO] finished tweaking crates.io crate numkong 7.5.0
[INFO] tweaked toml for crates.io crate numkong 7.5.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate numkong 7.5.0 on toolchain dec9417b8611e34e787a3e4c37686b5131f9e5c5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate numkong 7.5.0 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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c77fcf30a3d871e7fe2a89c43c4921367335a38170687449bc6fe61b8e3e3bec
[INFO] running `Command { std: "docker" "start" "-a" "c77fcf30a3d871e7fe2a89c43c4921367335a38170687449bc6fe61b8e3e3bec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c77fcf30a3d871e7fe2a89c43c4921367335a38170687449bc6fe61b8e3e3bec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c77fcf30a3d871e7fe2a89c43c4921367335a38170687449bc6fe61b8e3e3bec", kill_on_drop: false }`
[INFO] [stdout] c77fcf30a3d871e7fe2a89c43c4921367335a38170687449bc6fe61b8e3e3bec
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d3f36b960b850aec33a3aa90a8403db5cd2248e40879f40daff2c45305a9eaf3
[INFO] running `Command { std: "docker" "start" "-a" "d3f36b960b850aec33a3aa90a8403db5cd2248e40879f40daff2c45305a9eaf3", kill_on_drop: false }`
[INFO] [stderr]    Compiling numkong v7.5.0 (/opt/rustwide/workdir)
[ERROR] error running command: no output for 300 seconds
[INFO] running `Command { std: "docker" "inspect" "d3f36b960b850aec33a3aa90a8403db5cd2248e40879f40daff2c45305a9eaf3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d3f36b960b850aec33a3aa90a8403db5cd2248e40879f40daff2c45305a9eaf3", kill_on_drop: false }`
[INFO] [stdout] d3f36b960b850aec33a3aa90a8403db5cd2248e40879f40daff2c45305a9eaf3