[INFO] fetching crate how 0.1.0...
[INFO] checking how-0.1.0 against master#e9182f195b8505c87c4bd055b9f6e114ccda0981 for pr-144098
[INFO] extracting crate how 0.1.0 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate how 0.1.0
[INFO] finished tweaking crates.io crate how 0.1.0
[INFO] tweaked toml for crates.io crate how 0.1.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate how 0.1.0 on toolchain e9182f195b8505c87c4bd055b9f6e114ccda0981
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e9182f195b8505c87c4bd055b9f6e114ccda0981" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate how 0.1.0 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" "+e9182f195b8505c87c4bd055b9f6e114ccda0981" "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-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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+e9182f195b8505c87c4bd055b9f6e114ccda0981" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a0f6e087e8f98933ed49d22cd14f1991438b264276a61d08e2ea2eec54497b76
[INFO] running `Command { std: "docker" "start" "-a" "a0f6e087e8f98933ed49d22cd14f1991438b264276a61d08e2ea2eec54497b76", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a0f6e087e8f98933ed49d22cd14f1991438b264276a61d08e2ea2eec54497b76", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a0f6e087e8f98933ed49d22cd14f1991438b264276a61d08e2ea2eec54497b76", kill_on_drop: false }`
[INFO] [stdout] a0f6e087e8f98933ed49d22cd14f1991438b264276a61d08e2ea2eec54497b76
[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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+e9182f195b8505c87c4bd055b9f6e114ccda0981" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4de6f8da52f588a574fd65fcafb3fe49caf282cc6b237e43089dd7be90b23c60
[INFO] running `Command { std: "docker" "start" "-a" "4de6f8da52f588a574fd65fcafb3fe49caf282cc6b237e43089dd7be90b23c60", kill_on_drop: false }`
[INFO] [stderr]     Checking how v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.08s
[INFO] running `Command { std: "docker" "inspect" "4de6f8da52f588a574fd65fcafb3fe49caf282cc6b237e43089dd7be90b23c60", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4de6f8da52f588a574fd65fcafb3fe49caf282cc6b237e43089dd7be90b23c60", kill_on_drop: false }`
[INFO] [stdout] 4de6f8da52f588a574fd65fcafb3fe49caf282cc6b237e43089dd7be90b23c60