[INFO] updating cached repository Catman155/four-in-a-row
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Catman155/four-in-a-row
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Catman155/four-in-a-row" "work/ex/beta-1.37-6/sources/1.36.0/gh/Catman155/four-in-a-row"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/Catman155/four-in-a-row'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Catman155/four-in-a-row" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/Catman155/four-in-a-row"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/Catman155/four-in-a-row'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 057c1a1df18fea122ba7b7e0fc3731c2dc1b24c9
[INFO] sha for GitHub repo Catman155/four-in-a-row: 057c1a1df18fea122ba7b7e0fc3731c2dc1b24c9
[INFO] validating manifest of Catman155/four-in-a-row on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of Catman155/four-in-a-row on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing Catman155/four-in-a-row
[INFO] finished frobbing Catman155/four-in-a-row
[INFO] frobbed toml for Catman155/four-in-a-row written to work/ex/beta-1.37-6/sources/1.36.0/gh/Catman155/four-in-a-row/Cargo.toml
[INFO] started frobbing Catman155/four-in-a-row
[INFO] finished frobbing Catman155/four-in-a-row
[INFO] frobbed toml for Catman155/four-in-a-row written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/Catman155/four-in-a-row/Cargo.toml
[INFO] crate Catman155/four-in-a-row already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing Catman155/four-in-a-row against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/Catman155/four-in-a-row:/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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] 7af30300d2bb62daea77f6f53cecb14e0300048c8f25e84df430c3b5537a6a38
[INFO] running `"docker" "start" "-a" "7af30300d2bb62daea77f6f53cecb14e0300048c8f25e84df430c3b5537a6a38"`
[INFO] [stderr]    Compiling rprompt v1.0.3
[INFO] [stderr]    Compiling four_in_a_row v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `BOARD_SIZE`
[INFO] [stderr]  --> src/objects/ai.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use BOARD_SIZE;
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `direction`
[INFO] [stderr]   --> src/objects/ai.rs:19:17
[INFO] [stderr]    |
[INFO] [stderr] 19 |             let direction = self.get_possible_directions(positions);
[INFO] [stderr]    |                 ^^^^^^^^^ help: consider prefixing with an underscore: `_direction`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/objects/ai.rs:31:13
[INFO] [stderr]    |
[INFO] [stderr] 31 |         let mut possible = Vec::<[(i64, i64); 4]>::new();
[INFO] [stderr]    |             ----^^^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.73s
[INFO] running `"docker" "inspect" "7af30300d2bb62daea77f6f53cecb14e0300048c8f25e84df430c3b5537a6a38"`
[INFO] running `"docker" "rm" "-f" "7af30300d2bb62daea77f6f53cecb14e0300048c8f25e84df430c3b5537a6a38"`
[INFO] [stdout] 7af30300d2bb62daea77f6f53cecb14e0300048c8f25e84df430c3b5537a6a38
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/Catman155/four-in-a-row:/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" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 732298b5256e11e8b157498bd1f986bbd849ad218aca92559e2e97a54dc90785
[INFO] running `"docker" "start" "-a" "732298b5256e11e8b157498bd1f986bbd849ad218aca92559e2e97a54dc90785"`
[INFO] [stderr]    Compiling four_in_a_row v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `BOARD_SIZE`
[INFO] [stderr]  --> src/objects/ai.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use BOARD_SIZE;
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `direction`
[INFO] [stderr]   --> src/objects/ai.rs:19:17
[INFO] [stderr]    |
[INFO] [stderr] 19 |             let direction = self.get_possible_directions(positions);
[INFO] [stderr]    |                 ^^^^^^^^^ help: consider prefixing with an underscore: `_direction`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/objects/ai.rs:31:13
[INFO] [stderr]    |
[INFO] [stderr] 31 |         let mut possible = Vec::<[(i64, i64); 4]>::new();
[INFO] [stderr]    |             ----^^^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.91s
[INFO] running `"docker" "inspect" "732298b5256e11e8b157498bd1f986bbd849ad218aca92559e2e97a54dc90785"`
[INFO] running `"docker" "rm" "-f" "732298b5256e11e8b157498bd1f986bbd849ad218aca92559e2e97a54dc90785"`
[INFO] [stdout] 732298b5256e11e8b157498bd1f986bbd849ad218aca92559e2e97a54dc90785
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/Catman155/four-in-a-row:/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" "+1.36.0" "test" "--frozen"`
[INFO] [stdout] 1264147c0eea6592b665dc2b271815f9c5ae96e2e02440584b500051326ff524
[INFO] running `"docker" "start" "-a" "1264147c0eea6592b665dc2b271815f9c5ae96e2e02440584b500051326ff524"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/four_in_a_row-404c807c598365ad
[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" "1264147c0eea6592b665dc2b271815f9c5ae96e2e02440584b500051326ff524"`
[INFO] running `"docker" "rm" "-f" "1264147c0eea6592b665dc2b271815f9c5ae96e2e02440584b500051326ff524"`
[INFO] [stdout] 1264147c0eea6592b665dc2b271815f9c5ae96e2e02440584b500051326ff524