[INFO] cloning repository https://github.com/xinuwiz/simple-thread-pool-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/xinuwiz/simple-thread-pool-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxinuwiz%2Fsimple-thread-pool-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxinuwiz%2Fsimple-thread-pool-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 454fa6304067cee2819dfa98f3acd45f047b441e
[INFO] checking xinuwiz/simple-thread-pool-rust against master#5337252b9952fdd9482ed6a4add17254e5bd2c40 for pr-138785
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxinuwiz%2Fsimple-thread-pool-rust" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/xinuwiz/simple-thread-pool-rust on toolchain 5337252b9952fdd9482ed6a4add17254e5bd2c40
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5337252b9952fdd9482ed6a4add17254e5bd2c40" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/xinuwiz/simple-thread-pool-rust
[INFO] finished tweaking git repo https://github.com/xinuwiz/simple-thread-pool-rust
[INFO] tweaked toml for git repo https://github.com/xinuwiz/simple-thread-pool-rust written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/xinuwiz/simple-thread-pool-rust 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" "+5337252b9952fdd9482ed6a4add17254e5bd2c40" "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-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+5337252b9952fdd9482ed6a4add17254e5bd2c40" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bf9ae623a627f2da76e031b2d90e2755f57dc52be4c4ffa17a06eaf68dbfde6d
[INFO] running `Command { std: "docker" "start" "-a" "bf9ae623a627f2da76e031b2d90e2755f57dc52be4c4ffa17a06eaf68dbfde6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bf9ae623a627f2da76e031b2d90e2755f57dc52be4c4ffa17a06eaf68dbfde6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bf9ae623a627f2da76e031b2d90e2755f57dc52be4c4ffa17a06eaf68dbfde6d", kill_on_drop: false }`
[INFO] [stdout] bf9ae623a627f2da76e031b2d90e2755f57dc52be4c4ffa17a06eaf68dbfde6d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+5337252b9952fdd9482ed6a4add17254e5bd2c40" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 929f05cc63f900901cfb9fe1a9bc3cada2ee2fabaade46ecad93dd0cc454aeac
[INFO] running `Command { std: "docker" "start" "-a" "929f05cc63f900901cfb9fe1a9bc3cada2ee2fabaade46ecad93dd0cc454aeac", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.89
[INFO] [stderr]    Compiling unicode-ident v1.0.13
[INFO] [stderr]    Compiling autocfg v1.4.0
[INFO] [stderr]    Compiling libc v0.2.161
[INFO] [stderr]     Checking futures-core v0.3.31
[INFO] [stderr]     Checking futures-sink v0.3.31
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking futures-task v0.3.31
[INFO] [stderr]     Checking memchr v2.7.4
[INFO] [stderr]     Checking pin-project-lite v0.2.15
[INFO] [stderr]     Checking futures-io v0.3.31
[INFO] [stderr]     Checking futures-channel v0.3.31
[INFO] [stderr]    Compiling slab v0.4.9
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]    Compiling syn v2.0.85
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]    Compiling futures-macro v0.3.31
[INFO] [stderr]     Checking futures-util v0.3.31
[INFO] [stderr]     Checking futures-executor v0.3.31
[INFO] [stderr]     Checking futures v0.3.31
[INFO] [stderr]     Checking example v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 13.09s
[INFO] running `Command { std: "docker" "inspect" "929f05cc63f900901cfb9fe1a9bc3cada2ee2fabaade46ecad93dd0cc454aeac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "929f05cc63f900901cfb9fe1a9bc3cada2ee2fabaade46ecad93dd0cc454aeac", kill_on_drop: false }`
[INFO] [stdout] 929f05cc63f900901cfb9fe1a9bc3cada2ee2fabaade46ecad93dd0cc454aeac