[INFO] fetching crate arc-calc 0.1.4...
[INFO] checking arc-calc-0.1.4 against master#936f2600b6c903b04387f74ed5cbce88bb06d243 for pr-91141
[INFO] extracting crate arc-calc 0.1.4 into /workspace/builds/worker-51/source
[INFO] validating manifest of crates.io crate arc-calc 0.1.4 on toolchain 936f2600b6c903b04387f74ed5cbce88bb06d243
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate arc-calc 0.1.4
[INFO] finished tweaking crates.io crate arc-calc 0.1.4
[INFO] tweaked toml for crates.io crate arc-calc 0.1.4 written to /workspace/builds/worker-51/source/Cargo.toml
[INFO] crate crates.io crate arc-calc 0.1.4 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "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-51/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-51/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 36079bc4965700f3a7d0fa11017aa939d5faa2bf2eb5066e2b509a0e4beae6f0
[INFO] running `Command { std: "docker" "start" "-a" "36079bc4965700f3a7d0fa11017aa939d5faa2bf2eb5066e2b509a0e4beae6f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "36079bc4965700f3a7d0fa11017aa939d5faa2bf2eb5066e2b509a0e4beae6f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "36079bc4965700f3a7d0fa11017aa939d5faa2bf2eb5066e2b509a0e4beae6f0", kill_on_drop: false }`
[INFO] [stdout] 36079bc4965700f3a7d0fa11017aa939d5faa2bf2eb5066e2b509a0e4beae6f0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-51/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-51/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a8127d6d45b12897fca716c13a8c0857b66d58da6f3ee5e0e1a1edc2056c5826
[INFO] running `Command { std: "docker" "start" "-a" "a8127d6d45b12897fca716c13a8c0857b66d58da6f3ee5e0e1a1edc2056c5826", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking arc-calc v0.1.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.70s
[INFO] running `Command { std: "docker" "inspect" "a8127d6d45b12897fca716c13a8c0857b66d58da6f3ee5e0e1a1edc2056c5826", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a8127d6d45b12897fca716c13a8c0857b66d58da6f3ee5e0e1a1edc2056c5826", kill_on_drop: false }`
[INFO] [stdout] a8127d6d45b12897fca716c13a8c0857b66d58da6f3ee5e0e1a1edc2056c5826