[INFO] updating cached repository bertiespell/game_of_life_rust [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/bertiespell/game_of_life_rust [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/bertiespell/game_of_life_rust" "work/ex/beta-1.38-1/sources/1.37.0/gh/bertiespell/game_of_life_rust"` [INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/bertiespell/game_of_life_rust'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/bertiespell/game_of_life_rust" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/bertiespell/game_of_life_rust"` [INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/bertiespell/game_of_life_rust'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] c8557d453c859c9ecb61969cd14ceeb47ecdc1af [INFO] sha for GitHub repo bertiespell/game_of_life_rust: c8557d453c859c9ecb61969cd14ceeb47ecdc1af [INFO] validating manifest of bertiespell/game_of_life_rust on toolchain 1.37.0 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of bertiespell/game_of_life_rust on toolchain beta-2019-08-13 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing bertiespell/game_of_life_rust [INFO] finished frobbing bertiespell/game_of_life_rust [INFO] frobbed toml for bertiespell/game_of_life_rust written to work/ex/beta-1.38-1/sources/1.37.0/gh/bertiespell/game_of_life_rust/Cargo.toml [INFO] started frobbing bertiespell/game_of_life_rust [INFO] finished frobbing bertiespell/game_of_life_rust [INFO] frobbed toml for bertiespell/game_of_life_rust written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/bertiespell/game_of_life_rust/Cargo.toml [INFO] crate bertiespell/game_of_life_rust already has a lockfile, it will not be regenerated [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] testing bertiespell/game_of_life_rust against beta-2019-08-13 for beta-1.38-1 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/bertiespell/game_of_life_rust:/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=warn" "-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" "+beta-2019-08-13" "build" "--frozen"` [INFO] [stdout] 924badd0d5cfc8675ecebfd9b47f4f4db56b5b301ef54257f643fcfbfba3b324 [INFO] running `"docker" "start" "-a" "924badd0d5cfc8675ecebfd9b47f4f4db56b5b301ef54257f643fcfbfba3b324"` [INFO] [stderr] Compiling game_of_life v0.1.0 (/opt/crater/workdir) [INFO] [stderr] warning: variant is never constructed: `Dead` [INFO] [stderr] --> src/main.rs:12:5 [INFO] [stderr] | [INFO] [stderr] 12 | Dead [INFO] [stderr] | ^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used [INFO] [stderr] --> src/main.rs:31:9 [INFO] [stderr] | [INFO] [stderr] 31 | / self.cells.iter().map(|row| { [INFO] [stderr] 32 | | row.iter().map(|cell| fmt::write(f, format_args!("{}", cell))).collect::>(); [INFO] [stderr] 33 | | println!(); [INFO] [stderr] 34 | | }).collect::>(); [INFO] [stderr] | |_______________________________^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_must_use)]` on by default [INFO] [stderr] = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead [INFO] [stderr] [INFO] [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used [INFO] [stderr] --> src/main.rs:32:13 [INFO] [stderr] | [INFO] [stderr] 32 | row.iter().map(|cell| fmt::write(f, format_args!("{}", cell))).collect::>(); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 1.00s [INFO] running `"docker" "inspect" "924badd0d5cfc8675ecebfd9b47f4f4db56b5b301ef54257f643fcfbfba3b324"` [INFO] running `"docker" "rm" "-f" "924badd0d5cfc8675ecebfd9b47f4f4db56b5b301ef54257f643fcfbfba3b324"` [INFO] [stdout] 924badd0d5cfc8675ecebfd9b47f4f4db56b5b301ef54257f643fcfbfba3b324 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/bertiespell/game_of_life_rust:/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=warn" "-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" "+beta-2019-08-13" "test" "--frozen" "--no-run"` [INFO] [stdout] 12770c05603b22170d061c68b1f007b420a82785a5f45d6bfbd9743a92cb09d2 [INFO] running `"docker" "start" "-a" "12770c05603b22170d061c68b1f007b420a82785a5f45d6bfbd9743a92cb09d2"` [INFO] [stderr] Compiling game_of_life v0.1.0 (/opt/crater/workdir) [INFO] [stderr] warning: variant is never constructed: `Dead` [INFO] [stderr] --> src/main.rs:12:5 [INFO] [stderr] | [INFO] [stderr] 12 | Dead [INFO] [stderr] | ^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used [INFO] [stderr] --> src/main.rs:31:9 [INFO] [stderr] | [INFO] [stderr] 31 | / self.cells.iter().map(|row| { [INFO] [stderr] 32 | | row.iter().map(|cell| fmt::write(f, format_args!("{}", cell))).collect::>(); [INFO] [stderr] 33 | | println!(); [INFO] [stderr] 34 | | }).collect::>(); [INFO] [stderr] | |_______________________________^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_must_use)]` on by default [INFO] [stderr] = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead [INFO] [stderr] [INFO] [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used [INFO] [stderr] --> src/main.rs:32:13 [INFO] [stderr] | [INFO] [stderr] 32 | row.iter().map(|cell| fmt::write(f, format_args!("{}", cell))).collect::>(); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.71s [INFO] running `"docker" "inspect" "12770c05603b22170d061c68b1f007b420a82785a5f45d6bfbd9743a92cb09d2"` [INFO] running `"docker" "rm" "-f" "12770c05603b22170d061c68b1f007b420a82785a5f45d6bfbd9743a92cb09d2"` [INFO] [stdout] 12770c05603b22170d061c68b1f007b420a82785a5f45d6bfbd9743a92cb09d2 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/bertiespell/game_of_life_rust:/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=warn" "-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" "+beta-2019-08-13" "test" "--frozen"` [INFO] [stdout] 21e68bc6bff4933988496a4630086bc327cbb2b9061a321c6908014567a96a68 [INFO] running `"docker" "start" "-a" "21e68bc6bff4933988496a4630086bc327cbb2b9061a321c6908014567a96a68"` [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.02s [INFO] [stderr] Running /opt/crater/target/debug/deps/game_of_life-ba086de9c4dd4046 [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" "21e68bc6bff4933988496a4630086bc327cbb2b9061a321c6908014567a96a68"` [INFO] running `"docker" "rm" "-f" "21e68bc6bff4933988496a4630086bc327cbb2b9061a321c6908014567a96a68"` [INFO] [stdout] 21e68bc6bff4933988496a4630086bc327cbb2b9061a321c6908014567a96a68