[INFO] cloning repository sebasmagri/rust-concurrency-patterns
[INFO] running `"git" "clone" "--bare" "git://github.com/sebasmagri/rust-concurrency-patterns.git" "work/cache/sources/gh/sebasmagri/rust-concurrency-patterns"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/sebasmagri/rust-concurrency-patterns'...
[INFO] running `"git" "clone" "work/cache/sources/gh/sebasmagri/rust-concurrency-patterns" "work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/sebasmagri/rust-concurrency-patterns"`
[INFO] [stderr] Cloning into 'work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/sebasmagri/rust-concurrency-patterns'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/sebasmagri/rust-concurrency-patterns" "work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/sebasmagri/rust-concurrency-patterns"`
[INFO] [stderr] Cloning into 'work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/sebasmagri/rust-concurrency-patterns'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c916fe831faec73a7fb5d652e91fa9da528d85c4
[INFO] sha for GitHub repo sebasmagri/rust-concurrency-patterns: c916fe831faec73a7fb5d652e91fa9da528d85c4
[INFO] validating manifest of sebasmagri/rust-concurrency-patterns on toolchain master#c8865d8e195813ade6b84434ac9f8850e7112d1a
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of sebasmagri/rust-concurrency-patterns on toolchain try#e212b7d492c96d3837691ba29d32d5f468933fb8
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing sebasmagri/rust-concurrency-patterns
[INFO] finished frobbing sebasmagri/rust-concurrency-patterns
[INFO] frobbed toml for sebasmagri/rust-concurrency-patterns written to work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/sebasmagri/rust-concurrency-patterns/Cargo.toml
[INFO] started frobbing sebasmagri/rust-concurrency-patterns
[INFO] finished frobbing sebasmagri/rust-concurrency-patterns
[INFO] frobbed toml for sebasmagri/rust-concurrency-patterns written to work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/sebasmagri/rust-concurrency-patterns/Cargo.toml
[INFO] crate sebasmagri/rust-concurrency-patterns already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing sebasmagri/rust-concurrency-patterns against master#c8865d8e195813ade6b84434ac9f8850e7112d1a for pr-61629
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-7/master#c8865d8e195813ade6b84434ac9f8850e7112d1a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/sebasmagri/rust-concurrency-patterns:/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" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "build" "--frozen"`
[INFO] [stdout] 2038688704f6399f2f7444cbcffe5b1248ebbae008f521f0293eff2cc62c1075
[INFO] running `"docker" "start" "-a" "2038688704f6399f2f7444cbcffe5b1248ebbae008f521f0293eff2cc62c1075"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] [stderr]    Compiling concurrency-patterns v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.13s
[INFO] running `"docker" "inspect" "2038688704f6399f2f7444cbcffe5b1248ebbae008f521f0293eff2cc62c1075"`
[INFO] running `"docker" "rm" "-f" "2038688704f6399f2f7444cbcffe5b1248ebbae008f521f0293eff2cc62c1075"`
[INFO] [stdout] 2038688704f6399f2f7444cbcffe5b1248ebbae008f521f0293eff2cc62c1075
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-7/master#c8865d8e195813ade6b84434ac9f8850e7112d1a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/sebasmagri/rust-concurrency-patterns:/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" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "test" "--frozen" "--no-run"`
[INFO] [stdout] 463902f78b6b01bfabeb7d1c87e9f8ec204c3eb741db3fc353ef298ba6340e4f
[INFO] running `"docker" "start" "-a" "463902f78b6b01bfabeb7d1c87e9f8ec204c3eb741db3fc353ef298ba6340e4f"`
[INFO] [stderr]    Compiling concurrency-patterns v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> examples/04-fan-in.rs:32:5
[INFO] [stderr]    |
[INFO] [stderr] 32 |     consumer(Arc::new(Mutex::new(rx))).join();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.27s
[INFO] running `"docker" "inspect" "463902f78b6b01bfabeb7d1c87e9f8ec204c3eb741db3fc353ef298ba6340e4f"`
[INFO] running `"docker" "rm" "-f" "463902f78b6b01bfabeb7d1c87e9f8ec204c3eb741db3fc353ef298ba6340e4f"`
[INFO] [stdout] 463902f78b6b01bfabeb7d1c87e9f8ec204c3eb741db3fc353ef298ba6340e4f
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-7/master#c8865d8e195813ade6b84434ac9f8850e7112d1a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/sebasmagri/rust-concurrency-patterns:/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" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "test" "--frozen"`
[INFO] [stdout] fbb1ecd305871ed6699c1ce28efeb8681725bad99006858a9b6f8961693bd5d2
[INFO] running `"docker" "start" "-a" "fbb1ecd305871ed6699c1ce28efeb8681725bad99006858a9b6f8961693bd5d2"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/concurrency_patterns-af2e0819ccc65457
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "fbb1ecd305871ed6699c1ce28efeb8681725bad99006858a9b6f8961693bd5d2"`
[INFO] running `"docker" "rm" "-f" "fbb1ecd305871ed6699c1ce28efeb8681725bad99006858a9b6f8961693bd5d2"`
[INFO] [stdout] fbb1ecd305871ed6699c1ce28efeb8681725bad99006858a9b6f8961693bd5d2