[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 beta-2019-09-28 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-6/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ssttevee/rust-mcts-connect-four on toolchain beta-2019-09-28
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "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-6/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" "+beta-2019-09-28" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] warning: file found to be present in multiple build targets: /big/crater/work/builds/worker-6/source/src/main.rs
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-6/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" "+beta-2019-09-28" "build" "--frozen"`
[INFO] [stdout] 596fb0e77f598adcb374fb3be1d90cd0d384f2419a07b6b8921418d585ae7002
[INFO] running `"docker" "start" "-a" "596fb0e77f598adcb374fb3be1d90cd0d384f2419a07b6b8921418d585ae7002"`
[INFO] [stderr] warning: file found to be present in multiple build targets: /opt/rustwide/workdir/src/main.rs
[INFO] [stderr]    Compiling getrandom v0.1.6
[INFO] [stderr]    Compiling termion v1.5.3
[INFO] [stderr]    Compiling rand_core v0.5.0
[INFO] [stderr]    Compiling rand_chacha v0.2.0
[INFO] [stderr]    Compiling rand v0.7.0
[INFO] [stderr]    Compiling connect-4 v0.1.0 (/opt/rustwide/workdir)
[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]    = note: `#[warn(dead_code)]` on by default
[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 4.84s
[INFO] running `"docker" "inspect" "596fb0e77f598adcb374fb3be1d90cd0d384f2419a07b6b8921418d585ae7002"`
[INFO] running `"docker" "rm" "-f" "596fb0e77f598adcb374fb3be1d90cd0d384f2419a07b6b8921418d585ae7002"`
[INFO] [stdout] 596fb0e77f598adcb374fb3be1d90cd0d384f2419a07b6b8921418d585ae7002
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-6/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" "+beta-2019-09-28" "test" "--frozen" "--no-run"`
[INFO] [stdout] f572e410f5b9664de5be5345690ddaf7c7204423af0f3dc4ddabbc4a9fa0ec45
[INFO] running `"docker" "start" "-a" "f572e410f5b9664de5be5345690ddaf7c7204423af0f3dc4ddabbc4a9fa0ec45"`
[INFO] [stderr] warning: file found to be present in multiple build targets: /opt/rustwide/workdir/src/main.rs
[INFO] [stderr]    Compiling connect-4 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.50s
[INFO] running `"docker" "inspect" "f572e410f5b9664de5be5345690ddaf7c7204423af0f3dc4ddabbc4a9fa0ec45"`
[INFO] running `"docker" "rm" "-f" "f572e410f5b9664de5be5345690ddaf7c7204423af0f3dc4ddabbc4a9fa0ec45"`
[INFO] [stdout] f572e410f5b9664de5be5345690ddaf7c7204423af0f3dc4ddabbc4a9fa0ec45
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-6/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" "+beta-2019-09-28" "test" "--frozen"`
[INFO] [stdout] 164d9411f4cee690a8da02ca9bae4e5b43edbe56f952804cdbbe7017e3d3e4db
[INFO] running `"docker" "start" "-a" "164d9411f4cee690a8da02ca9bae4e5b43edbe56f952804cdbbe7017e3d3e4db"`
[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 0.05s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/libc4-f638bec8b6f6c574
[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-a3981550bf25b5c1
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test game::tests::test_game_search_ranges ... ok
[INFO] [stderr]    Doc-tests libc4
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[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" "164d9411f4cee690a8da02ca9bae4e5b43edbe56f952804cdbbe7017e3d3e4db"`
[INFO] running `"docker" "rm" "-f" "164d9411f4cee690a8da02ca9bae4e5b43edbe56f952804cdbbe7017e3d3e4db"`
[INFO] [stdout] 164d9411f4cee690a8da02ca9bae4e5b43edbe56f952804cdbbe7017e3d3e4db