[INFO] cloning repository RustExamples/understand_ownership
[INFO] running `"git" "clone" "--bare" "git://github.com/RustExamples/understand_ownership.git" "work/cache/sources/gh/RustExamples/understand_ownership"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/RustExamples/understand_ownership'...
[INFO] running `"git" "clone" "work/cache/sources/gh/RustExamples/understand_ownership" "work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/RustExamples/understand_ownership"`
[INFO] [stderr] Cloning into 'work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/RustExamples/understand_ownership'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/RustExamples/understand_ownership" "work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/RustExamples/understand_ownership"`
[INFO] [stderr] Cloning into 'work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/RustExamples/understand_ownership'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e129a09715d80aababea59e9878dec5062aa98b6
[INFO] sha for GitHub repo RustExamples/understand_ownership: e129a09715d80aababea59e9878dec5062aa98b6
[INFO] validating manifest of RustExamples/understand_ownership 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 RustExamples/understand_ownership 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 RustExamples/understand_ownership
[INFO] finished frobbing RustExamples/understand_ownership
[INFO] frobbed toml for RustExamples/understand_ownership written to work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/RustExamples/understand_ownership/Cargo.toml
[INFO] started frobbing RustExamples/understand_ownership
[INFO] finished frobbing RustExamples/understand_ownership
[INFO] frobbed toml for RustExamples/understand_ownership written to work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/RustExamples/understand_ownership/Cargo.toml
[INFO] crate RustExamples/understand_ownership 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 RustExamples/understand_ownership against try#e212b7d492c96d3837691ba29d32d5f468933fb8 for pr-61629
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-1/try#e212b7d492c96d3837691ba29d32d5f468933fb8:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/RustExamples/understand_ownership:/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" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "build" "--frozen"`
[INFO] [stdout] 5b522bcc94ce765bd7ee4a0bacbb77615f30a17a17f5ed67ab6b46cf8a184cd2
[INFO] running `"docker" "start" "-a" "5b522bcc94ce765bd7ee4a0bacbb77615f30a17a17f5ed67ab6b46cf8a184cd2"`
[INFO] [stderr]    Compiling understand_ownership v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `word`
[INFO] [stderr]  --> src/main.rs:5:9
[INFO] [stderr]   |
[INFO] [stderr] 5 |     let word = first_word(&s);
[INFO] [stderr]   |         ^^^^ help: consider prefixing with an underscore: `_word`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `word`
[INFO] [stderr]  --> src/main.rs:6:9
[INFO] [stderr]   |
[INFO] [stderr] 6 |     let word = first_word(&s[..5]);
[INFO] [stderr]   |         ^^^^ help: consider prefixing with an underscore: `_word`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `word`
[INFO] [stderr]  --> src/main.rs:8:9
[INFO] [stderr]   |
[INFO] [stderr] 8 |     let word = first_word(literal);
[INFO] [stderr]   |         ^^^^ help: consider prefixing with an underscore: `_word`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `word`
[INFO] [stderr]  --> src/main.rs:9:9
[INFO] [stderr]   |
[INFO] [stderr] 9 |     let word = first_word(&literal[..5]);
[INFO] [stderr]   |         ^^^^ help: consider prefixing with an underscore: `_word`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.00s
[INFO] running `"docker" "inspect" "5b522bcc94ce765bd7ee4a0bacbb77615f30a17a17f5ed67ab6b46cf8a184cd2"`
[INFO] running `"docker" "rm" "-f" "5b522bcc94ce765bd7ee4a0bacbb77615f30a17a17f5ed67ab6b46cf8a184cd2"`
[INFO] [stdout] 5b522bcc94ce765bd7ee4a0bacbb77615f30a17a17f5ed67ab6b46cf8a184cd2
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-1/try#e212b7d492c96d3837691ba29d32d5f468933fb8:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/RustExamples/understand_ownership:/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" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "test" "--frozen" "--no-run"`
[INFO] [stdout] 873a303218645609b7ddebebb9358a8e98558338738a2fc148f2a7050bb30a58
[INFO] running `"docker" "start" "-a" "873a303218645609b7ddebebb9358a8e98558338738a2fc148f2a7050bb30a58"`
[INFO] [stderr]    Compiling understand_ownership v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `word`
[INFO] [stderr]  --> src/main.rs:5:9
[INFO] [stderr]   |
[INFO] [stderr] 5 |     let word = first_word(&s);
[INFO] [stderr]   |         ^^^^ help: consider prefixing with an underscore: `_word`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `word`
[INFO] [stderr]  --> src/main.rs:6:9
[INFO] [stderr]   |
[INFO] [stderr] 6 |     let word = first_word(&s[..5]);
[INFO] [stderr]   |         ^^^^ help: consider prefixing with an underscore: `_word`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `word`
[INFO] [stderr]  --> src/main.rs:8:9
[INFO] [stderr]   |
[INFO] [stderr] 8 |     let word = first_word(literal);
[INFO] [stderr]   |         ^^^^ help: consider prefixing with an underscore: `_word`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `word`
[INFO] [stderr]  --> src/main.rs:9:9
[INFO] [stderr]   |
[INFO] [stderr] 9 |     let word = first_word(&literal[..5]);
[INFO] [stderr]   |         ^^^^ help: consider prefixing with an underscore: `_word`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.94s
[INFO] running `"docker" "inspect" "873a303218645609b7ddebebb9358a8e98558338738a2fc148f2a7050bb30a58"`
[INFO] running `"docker" "rm" "-f" "873a303218645609b7ddebebb9358a8e98558338738a2fc148f2a7050bb30a58"`
[INFO] [stdout] 873a303218645609b7ddebebb9358a8e98558338738a2fc148f2a7050bb30a58
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-1/try#e212b7d492c96d3837691ba29d32d5f468933fb8:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/RustExamples/understand_ownership:/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" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "test" "--frozen"`
[INFO] [stdout] 3e3d9f1003b77b2059b54fe9902d0446269a5ea845e07dbb5d7c3de974a5bd65
[INFO] running `"docker" "start" "-a" "3e3d9f1003b77b2059b54fe9902d0446269a5ea845e07dbb5d7c3de974a5bd65"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/understand_ownership-91626bebcc0dca57
[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" "3e3d9f1003b77b2059b54fe9902d0446269a5ea845e07dbb5d7c3de974a5bd65"`
[INFO] running `"docker" "rm" "-f" "3e3d9f1003b77b2059b54fe9902d0446269a5ea845e07dbb5d7c3de974a5bd65"`
[INFO] [stdout] 3e3d9f1003b77b2059b54fe9902d0446269a5ea845e07dbb5d7c3de974a5bd65