[INFO] updating cached repository frafra/brutegol
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/frafra/brutegol
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/frafra/brutegol" "work/ex/beta-1.38-1/sources/1.37.0/gh/frafra/brutegol"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/frafra/brutegol'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/frafra/brutegol" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/frafra/brutegol"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/frafra/brutegol'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] a91dd151d1bcf4f0aff05d26506e32b6fd1879a5
[INFO] sha for GitHub repo frafra/brutegol: a91dd151d1bcf4f0aff05d26506e32b6fd1879a5
[INFO] validating manifest of frafra/brutegol 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 frafra/brutegol 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 frafra/brutegol
[INFO] finished frobbing frafra/brutegol
[INFO] frobbed toml for frafra/brutegol written to work/ex/beta-1.38-1/sources/1.37.0/gh/frafra/brutegol/Cargo.toml
[INFO] started frobbing frafra/brutegol
[INFO] finished frobbing frafra/brutegol
[INFO] frobbed toml for frafra/brutegol written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/frafra/brutegol/Cargo.toml
[INFO] crate frafra/brutegol 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 frafra/brutegol against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/frafra/brutegol:/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 70eb017f4f7c4c8357c9f477e71d38b25edde03b60024d301590eaf65284f0c5
[INFO] running `"docker" "start" "-a" "70eb017f4f7c4c8357c9f477e71d38b25edde03b60024d301590eaf65284f0c5"`
[INFO] [stderr]    Compiling brutegol v0.3.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `len`
[INFO] [stderr]   --> src/main.rs:96:22
[INFO] [stderr]    |
[INFO] [stderr] 96 | fn mirror_horizontal(len: usize, rows: usize, columns: usize, i: usize) -> usize {
[INFO] [stderr]    |                      ^^^ help: consider prefixing with an underscore: `_len`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `len`
[INFO] [stderr]    --> src/main.rs:100:20
[INFO] [stderr]     |
[INFO] [stderr] 100 | fn mirror_vertical(len: usize, rows: usize, columns: usize, i: usize) -> usize {
[INFO] [stderr]     |                    ^^^ help: consider prefixing with an underscore: `_len`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rows`
[INFO] [stderr]    --> src/main.rs:100:32
[INFO] [stderr]     |
[INFO] [stderr] 100 | fn mirror_vertical(len: usize, rows: usize, columns: usize, i: usize) -> usize {
[INFO] [stderr]     |                                ^^^^ help: consider prefixing with an underscore: `_rows`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `len`
[INFO] [stderr]    --> src/main.rs:104:20
[INFO] [stderr]     |
[INFO] [stderr] 104 | fn mirror_diagonal(len: usize, rows: usize, columns: usize, i: usize) -> usize {
[INFO] [stderr]     |                    ^^^ help: consider prefixing with an underscore: `_len`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rows`
[INFO] [stderr]    --> src/main.rs:116:27
[INFO] [stderr]     |
[INFO] [stderr] 116 | fn rotate_180(len: usize, rows: usize, columns: usize, i: usize) -> usize {
[INFO] [stderr]     |                           ^^^^ help: consider prefixing with an underscore: `_rows`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `columns`
[INFO] [stderr]    --> src/main.rs:116:40
[INFO] [stderr]     |
[INFO] [stderr] 116 | fn rotate_180(len: usize, rows: usize, columns: usize, i: usize) -> usize {
[INFO] [stderr]     |                                        ^^^^^^^ help: consider prefixing with an underscore: `_columns`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.76s
[INFO] running `"docker" "inspect" "70eb017f4f7c4c8357c9f477e71d38b25edde03b60024d301590eaf65284f0c5"`
[INFO] running `"docker" "rm" "-f" "70eb017f4f7c4c8357c9f477e71d38b25edde03b60024d301590eaf65284f0c5"`
[INFO] [stdout] 70eb017f4f7c4c8357c9f477e71d38b25edde03b60024d301590eaf65284f0c5
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/frafra/brutegol:/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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 622969e0b5a6f0448f0d05afbb8e830ba55e258d30b171fa8f9e74f91ae80c42
[INFO] running `"docker" "start" "-a" "622969e0b5a6f0448f0d05afbb8e830ba55e258d30b171fa8f9e74f91ae80c42"`
[INFO] [stderr]    Compiling env_logger v0.5.13
[INFO] [stderr]    Compiling quickcheck v0.6.2
[INFO] [stderr]    Compiling brutegol v0.3.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `len`
[INFO] [stderr]   --> src/main.rs:96:22
[INFO] [stderr]    |
[INFO] [stderr] 96 | fn mirror_horizontal(len: usize, rows: usize, columns: usize, i: usize) -> usize {
[INFO] [stderr]    |                      ^^^ help: consider prefixing with an underscore: `_len`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `len`
[INFO] [stderr]    --> src/main.rs:100:20
[INFO] [stderr]     |
[INFO] [stderr] 100 | fn mirror_vertical(len: usize, rows: usize, columns: usize, i: usize) -> usize {
[INFO] [stderr]     |                    ^^^ help: consider prefixing with an underscore: `_len`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rows`
[INFO] [stderr]    --> src/main.rs:100:32
[INFO] [stderr]     |
[INFO] [stderr] 100 | fn mirror_vertical(len: usize, rows: usize, columns: usize, i: usize) -> usize {
[INFO] [stderr]     |                                ^^^^ help: consider prefixing with an underscore: `_rows`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `len`
[INFO] [stderr]    --> src/main.rs:104:20
[INFO] [stderr]     |
[INFO] [stderr] 104 | fn mirror_diagonal(len: usize, rows: usize, columns: usize, i: usize) -> usize {
[INFO] [stderr]     |                    ^^^ help: consider prefixing with an underscore: `_len`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rows`
[INFO] [stderr]    --> src/main.rs:116:27
[INFO] [stderr]     |
[INFO] [stderr] 116 | fn rotate_180(len: usize, rows: usize, columns: usize, i: usize) -> usize {
[INFO] [stderr]     |                           ^^^^ help: consider prefixing with an underscore: `_rows`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `columns`
[INFO] [stderr]    --> src/main.rs:116:40
[INFO] [stderr]     |
[INFO] [stderr] 116 | fn rotate_180(len: usize, rows: usize, columns: usize, i: usize) -> usize {
[INFO] [stderr]     |                                        ^^^^^^^ help: consider prefixing with an underscore: `_columns`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.08s
[INFO] running `"docker" "inspect" "622969e0b5a6f0448f0d05afbb8e830ba55e258d30b171fa8f9e74f91ae80c42"`
[INFO] running `"docker" "rm" "-f" "622969e0b5a6f0448f0d05afbb8e830ba55e258d30b171fa8f9e74f91ae80c42"`
[INFO] [stdout] 622969e0b5a6f0448f0d05afbb8e830ba55e258d30b171fa8f9e74f91ae80c42
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/frafra/brutegol:/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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 37ca7db3945aa4e64177bcc833f24de37359b28849266001c4a21f4859c96a9a
[INFO] running `"docker" "start" "-a" "37ca7db3945aa4e64177bcc833f24de37359b28849266001c4a21f4859c96a9a"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/brutegol-fc7f3ab6e5e8da12
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test test::mirror_diagonal_test ... ok
[INFO] [stdout] test test::discover_test ... ok
[INFO] [stdout] test test::show_test ... ok
[INFO] [stdout] test test::next_test ... ok
[INFO] [stdout] test test::mirror_horizontal_test ... ok
[INFO] [stdout] test test::rotate_180_test ... ok
[INFO] [stdout] test test::mirror_horizontal_vertical ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "37ca7db3945aa4e64177bcc833f24de37359b28849266001c4a21f4859c96a9a"`
[INFO] running `"docker" "rm" "-f" "37ca7db3945aa4e64177bcc833f24de37359b28849266001c4a21f4859c96a9a"`
[INFO] [stdout] 37ca7db3945aa4e64177bcc833f24de37359b28849266001c4a21f4859c96a9a