[INFO] updating cached repository https://github.com/ssttevee/rust-mcts-connect-four
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d09b9e4390457f868b1a414061365653ce75e2a2
[INFO] testing ssttevee/rust-mcts-connect-four against 1.38.0 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fssttevee%2Frust-mcts-connect-four" "work/builds/worker-0/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ssttevee/rust-mcts-connect-four on toolchain 1.38.0
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/ssttevee/rust-mcts-connect-four
[INFO] finished tweaking git repo https://github.com/ssttevee/rust-mcts-connect-four
[INFO] tweaked toml for git repo https://github.com/ssttevee/rust-mcts-connect-four written to work/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/ssttevee/rust-mcts-connect-four already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "build" "--frozen"`
[INFO] [stdout] b23cc15789b1236d12b036c94322f5ab19f9b98e514d71aff69a1e4ce30fa760
[INFO] running `"docker" "start" "-a" "b23cc15789b1236d12b036c94322f5ab19f9b98e514d71aff69a1e4ce30fa760"`
[INFO] [stderr] warning: file found to be present in multiple build targets: /opt/rustwide/workdir/src/main.rs
[INFO] [stderr]    Compiling termion v1.5.3
[INFO] [stderr]    Compiling connect-4 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: struct is never constructed: `Done`
[INFO] [stderr]   --> src/cli.rs:13:1
[INFO] [stderr]    |
[INFO] [stderr] 13 | struct Done;
[INFO] [stderr]    | ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `player_move`
[INFO] [stderr]   --> src/cli.rs:23:1
[INFO] [stderr]    |
[INFO] [stderr] 23 | fn player_move<F: Fn(&Game) -> ()>(game: &mut Game, input: &mut io::Lines<io::StdinLock<'_>>, print_board: F) -> Result<(usize, usize), Done> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `mcts_move`
[INFO] [stderr]   --> src/cli.rs:84:1
[INFO] [stderr]    |
[INFO] [stderr] 84 | fn mcts_move(game: &mut Game, mcts: &MCTS) -> (usize, usize) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `hbot_move`
[INFO] [stderr]    --> src/cli.rs:110:1
[INFO] [stderr]     |
[INFO] [stderr] 110 | fn hbot_move(game: &mut Game) -> (usize, usize) {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `print_board_top`
[INFO] [stderr]    --> src/cli.rs:115:1
[INFO] [stderr]     |
[INFO] [stderr] 115 | fn print_board_top(cols: usize) {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `print_board`
[INFO] [stderr]    --> src/cli.rs:119:1
[INFO] [stderr]     |
[INFO] [stderr] 119 | fn print_board(game: &Game, last_move: Option<(usize, usize)>) {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `Opponent`
[INFO] [stderr]    --> src/cli.rs:129:1
[INFO] [stderr]     |
[INFO] [stderr] 129 | enum Opponent {
[INFO] [stderr]     | ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `select_opponent`
[INFO] [stderr]    --> src/cli.rs:134:1
[INFO] [stderr]     |
[INFO] [stderr] 134 | fn select_opponent(input: &mut io::Lines<io::StdinLock<'_>>) -> Result<Opponent, Done> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `start`
[INFO] [stderr]    --> src/cli.rs:182:1
[INFO] [stderr]     |
[INFO] [stderr] 182 | pub fn start() {
[INFO] [stderr]     | ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `main`
[INFO] [stderr]   --> src/main.rs:21:1
[INFO] [stderr]    |
[INFO] [stderr] 21 | fn main() {
[INFO] [stderr]    | ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.56s
[INFO] running `"docker" "inspect" "b23cc15789b1236d12b036c94322f5ab19f9b98e514d71aff69a1e4ce30fa760"`
[INFO] running `"docker" "rm" "-f" "b23cc15789b1236d12b036c94322f5ab19f9b98e514d71aff69a1e4ce30fa760"`
[INFO] [stdout] b23cc15789b1236d12b036c94322f5ab19f9b98e514d71aff69a1e4ce30fa760
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] ef618a6e786916c452bef87720a205a0279d307d2a17ff93ed2e7ba61ab760d1
[INFO] running `"docker" "start" "-a" "ef618a6e786916c452bef87720a205a0279d307d2a17ff93ed2e7ba61ab760d1"`
[INFO] [stderr] warning: file found to be present in multiple build targets: /opt/rustwide/workdir/src/main.rs
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling connect-4 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.41s
[INFO] running `"docker" "inspect" "ef618a6e786916c452bef87720a205a0279d307d2a17ff93ed2e7ba61ab760d1"`
[INFO] running `"docker" "rm" "-f" "ef618a6e786916c452bef87720a205a0279d307d2a17ff93ed2e7ba61ab760d1"`
[INFO] [stdout] ef618a6e786916c452bef87720a205a0279d307d2a17ff93ed2e7ba61ab760d1
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "test" "--frozen"`
[INFO] [stdout] aaaf6c857e53f182d4242b4cd1006ca85a91a301e5a0fc810335e9415b134031
[INFO] running `"docker" "start" "-a" "aaaf6c857e53f182d4242b4cd1006ca85a91a301e5a0fc810335e9415b134031"`
[INFO] [stderr] warning: file found to be present in multiple build targets: /opt/rustwide/workdir/src/main.rs
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/libc4-5c3b59f253d2e066
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test game::tests::test_game_search_ranges ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/connect_4-a5b63349c7662fa4
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test game::tests::test_game_search_ranges ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests libc4
[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" "aaaf6c857e53f182d4242b4cd1006ca85a91a301e5a0fc810335e9415b134031"`
[INFO] running `"docker" "rm" "-f" "aaaf6c857e53f182d4242b4cd1006ca85a91a301e5a0fc810335e9415b134031"`
[INFO] [stdout] aaaf6c857e53f182d4242b4cd1006ca85a91a301e5a0fc810335e9415b134031