[INFO] fetching crate collatz_conjecture 0.1.2...
[INFO] checking collatz_conjecture-0.1.2 against master#0599f3403366d9c57f0625e6de3af214b5042a90 for pr-87710
[INFO] extracting crate collatz_conjecture 0.1.2 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate collatz_conjecture 0.1.2 on toolchain 0599f3403366d9c57f0625e6de3af214b5042a90
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0599f3403366d9c57f0625e6de3af214b5042a90" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate collatz_conjecture 0.1.2
[INFO] finished tweaking crates.io crate collatz_conjecture 0.1.2
[INFO] tweaked toml for crates.io crate collatz_conjecture 0.1.2 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate crates.io crate collatz_conjecture 0.1.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0599f3403366d9c57f0625e6de3af214b5042a90" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+0599f3403366d9c57f0625e6de3af214b5042a90" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 66edcb203d270ac61f76161e28a24e1422ef810615c89f4c7928c9f3256f7329
[INFO] running `Command { std: "docker" "start" "-a" "66edcb203d270ac61f76161e28a24e1422ef810615c89f4c7928c9f3256f7329", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "66edcb203d270ac61f76161e28a24e1422ef810615c89f4c7928c9f3256f7329", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "66edcb203d270ac61f76161e28a24e1422ef810615c89f4c7928c9f3256f7329", kill_on_drop: false }`
[INFO] [stdout] 66edcb203d270ac61f76161e28a24e1422ef810615c89f4c7928c9f3256f7329
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+0599f3403366d9c57f0625e6de3af214b5042a90" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 642e2c06310c42f11f77fb2e432f455632242324fd6f6d7bb5b73f69e5d6e62c
[INFO] running `Command { std: "docker" "start" "-a" "642e2c06310c42f11f77fb2e432f455632242324fd6f6d7bb5b73f69e5d6e62c", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking text_io v0.1.9
[INFO] [stderr]     Checking collatz_conjecture v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.27s
[INFO] running `Command { std: "docker" "inspect" "642e2c06310c42f11f77fb2e432f455632242324fd6f6d7bb5b73f69e5d6e62c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "642e2c06310c42f11f77fb2e432f455632242324fd6f6d7bb5b73f69e5d6e62c", kill_on_drop: false }`
[INFO] [stdout] 642e2c06310c42f11f77fb2e432f455632242324fd6f6d7bb5b73f69e5d6e62c