[INFO] fetching crate gc-arena 0.2.2...
[INFO] checking gc-arena-0.2.2 against master#90442458ac46b1d5eed752c316da25450f67285b for pr-81477
[INFO] extracting crate gc-arena 0.2.2 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate gc-arena 0.2.2 on toolchain 90442458ac46b1d5eed752c316da25450f67285b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate gc-arena 0.2.2
[INFO] finished tweaking crates.io crate gc-arena 0.2.2
[INFO] tweaked toml for crates.io crate gc-arena 0.2.2 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "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-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:ea7d7bff36b2ba8ce4de8bba1d2dea90376bc481f1a945a913994a8c492e40c1" "/opt/rustwide/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 587824e222106692f4943c8722fcea7fce4b32dd7fa1121e9f22cfd30d021a73
[INFO] running `Command { std: "docker" "start" "-a" "587824e222106692f4943c8722fcea7fce4b32dd7fa1121e9f22cfd30d021a73", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "587824e222106692f4943c8722fcea7fce4b32dd7fa1121e9f22cfd30d021a73", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "587824e222106692f4943c8722fcea7fce4b32dd7fa1121e9f22cfd30d021a73", kill_on_drop: false }`
[INFO] [stdout] 587824e222106692f4943c8722fcea7fce4b32dd7fa1121e9f22cfd30d021a73
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:ea7d7bff36b2ba8ce4de8bba1d2dea90376bc481f1a945a913994a8c492e40c1" "/opt/rustwide/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 638826fe93288f88cf9c40e3998b796036f274b45247a495ea42b46c65a94ffa
[INFO] running `Command { std: "docker" "start" "-a" "638826fe93288f88cf9c40e3998b796036f274b45247a495ea42b46c65a94ffa", kill_on_drop: false }`
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling serde_derive v1.0.126
[INFO] [stderr]    Compiling gc-arena-derive v0.2.2
[INFO] [stderr]     Checking gc-arena v0.2.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking serde v1.0.126
[INFO] [stderr]     Checking serde_json v1.0.64
[INFO] [stderr]     Checking toml v0.5.8
[INFO] [stderr]     Checking trybuild v1.0.42
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 19.36s
[INFO] running `Command { std: "docker" "inspect" "638826fe93288f88cf9c40e3998b796036f274b45247a495ea42b46c65a94ffa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "638826fe93288f88cf9c40e3998b796036f274b45247a495ea42b46c65a94ffa", kill_on_drop: false }`
[INFO] [stdout] 638826fe93288f88cf9c40e3998b796036f274b45247a495ea42b46c65a94ffa