[INFO] cloning repository HuangChaoWH/rust_multithread_with_pool
[INFO] running `"git" "clone" "--bare" "git://github.com/HuangChaoWH/rust_multithread_with_pool.git" "work/cache/sources/gh/HuangChaoWH/rust_multithread_with_pool"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/HuangChaoWH/rust_multithread_with_pool'...
[INFO] running `"git" "clone" "work/cache/sources/gh/HuangChaoWH/rust_multithread_with_pool" "work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/HuangChaoWH/rust_multithread_with_pool"`
[INFO] [stderr] Cloning into 'work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/HuangChaoWH/rust_multithread_with_pool'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/HuangChaoWH/rust_multithread_with_pool" "work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/gh/HuangChaoWH/rust_multithread_with_pool"`
[INFO] [stderr] Cloning into 'work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/gh/HuangChaoWH/rust_multithread_with_pool'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] a32014efcb546f8184e4d45deea4d618ac18bcf1
[INFO] sha for GitHub repo HuangChaoWH/rust_multithread_with_pool: a32014efcb546f8184e4d45deea4d618ac18bcf1
[INFO] validating manifest of HuangChaoWH/rust_multithread_with_pool on toolchain master#c0086b9e8972fef9fd4af24bae20d45021ed06c6
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c0086b9e8972fef9fd4af24bae20d45021ed06c6-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of HuangChaoWH/rust_multithread_with_pool on toolchain try#290ac7b29f41ff9fa5232f9a1116ea71a3501063
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+290ac7b29f41ff9fa5232f9a1116ea71a3501063-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing HuangChaoWH/rust_multithread_with_pool
[INFO] finished frobbing HuangChaoWH/rust_multithread_with_pool
[INFO] frobbed toml for HuangChaoWH/rust_multithread_with_pool written to work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/HuangChaoWH/rust_multithread_with_pool/Cargo.toml
[INFO] started frobbing HuangChaoWH/rust_multithread_with_pool
[INFO] finished frobbing HuangChaoWH/rust_multithread_with_pool
[INFO] frobbed toml for HuangChaoWH/rust_multithread_with_pool written to work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/gh/HuangChaoWH/rust_multithread_with_pool/Cargo.toml
[INFO] crate HuangChaoWH/rust_multithread_with_pool has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c0086b9e8972fef9fd4af24bae20d45021ed06c6-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+290ac7b29f41ff9fa5232f9a1116ea71a3501063-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking HuangChaoWH/rust_multithread_with_pool against master#c0086b9e8972fef9fd4af24bae20d45021ed06c6 for pr-58899
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-58899/worker-2/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/HuangChaoWH/rust_multithread_with_pool:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+c0086b9e8972fef9fd4af24bae20d45021ed06c6-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] b6c6699e6dfd4fd9b8fcf268d77c8a872fbc9369b2d2fb3b94f2e990f7793dfd
[INFO] running `"docker" "start" "-a" "b6c6699e6dfd4fd9b8fcf268d77c8a872fbc9369b2d2fb3b94f2e990f7793dfd"`
[INFO] [stderr]     Checking rust_multithread_with_pool v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::sync::Arc`
[INFO] [stderr]  --> src/bin/main.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use std::sync::Arc;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::sync::Mutex`
[INFO] [stderr]   --> src/bin/main.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | use std::sync::Mutex;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::sync::Arc`
[INFO] [stderr]  --> src/bin/main.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use std::sync::Arc;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::sync::Mutex`
[INFO] [stderr]   --> src/bin/main.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | use std::sync::Mutex;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.00s
[INFO] running `"docker" "inspect" "b6c6699e6dfd4fd9b8fcf268d77c8a872fbc9369b2d2fb3b94f2e990f7793dfd"`
[INFO] running `"docker" "rm" "-f" "b6c6699e6dfd4fd9b8fcf268d77c8a872fbc9369b2d2fb3b94f2e990f7793dfd"`
[INFO] [stdout] b6c6699e6dfd4fd9b8fcf268d77c8a872fbc9369b2d2fb3b94f2e990f7793dfd