[INFO] cloning repository https://github.com/NickChubb/ReversiMCTS
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/NickChubb/ReversiMCTS" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNickChubb%2FReversiMCTS", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNickChubb%2FReversiMCTS'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b5b97f02148b27f86abe29ef2208ba68e003234e
[INFO] testing NickChubb/ReversiMCTS against beta-2022-04-10 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNickChubb%2FReversiMCTS" "/workspace/builds/worker-32/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-32/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/NickChubb/ReversiMCTS on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/NickChubb/ReversiMCTS
[INFO] finished tweaking git repo https://github.com/NickChubb/ReversiMCTS
[INFO] tweaked toml for git repo https://github.com/NickChubb/ReversiMCTS written to /workspace/builds/worker-32/source/Cargo.toml
[INFO] crate git repo https://github.com/NickChubb/ReversiMCTS already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-32/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-32/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cc808cc057a67818570c6957043c738210053a11dd73ed35dded432482f7e9ff
[INFO] running `Command { std: "docker" "start" "-a" "cc808cc057a67818570c6957043c738210053a11dd73ed35dded432482f7e9ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cc808cc057a67818570c6957043c738210053a11dd73ed35dded432482f7e9ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc808cc057a67818570c6957043c738210053a11dd73ed35dded432482f7e9ff", kill_on_drop: false }`
[INFO] [stdout] cc808cc057a67818570c6957043c738210053a11dd73ed35dded432482f7e9ff
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-32/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-32/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b69f1d2e60f42a51aad83ff839cd5d3d7aa7a6a868a1ab0f0f0bbc359b4c89f3
[INFO] running `Command { std: "docker" "start" "-a" "b69f1d2e60f42a51aad83ff839cd5d3d7aa7a6a868a1ab0f0f0bbc359b4c89f3", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.73
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling ppv-lite86 v0.2.8
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling thread_local v1.0.1
[INFO] [stderr]    Compiling aho-corasick v0.7.13
[INFO] [stderr]    Compiling hashbrown v0.8.1
[INFO] [stderr]    Compiling indexmap v1.5.0
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling regex v1.3.9
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.3.23
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling libmath v0.2.1
[INFO] [stderr]    Compiling reversi v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `prev_player_score`
[INFO] [stdout]    --> src/main.rs:841:10
[INFO] [stdout]     |
[INFO] [stdout] 841 |     let (prev_player_score, prev_cpu_score): (u8, u8) = b.get_score();
[INFO] [stdout]     |          ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_prev_player_score`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `player_score`
[INFO] [stdout]    --> src/main.rs:857:14
[INFO] [stdout]     |
[INFO] [stdout] 857 |         let (player_score, cpu_score): (u8, u8) = new_board.get_score();
[INFO] [stdout]     |              ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_player_score`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `difficulty`
[INFO] [stdout]    --> src/main.rs:886:13
[INFO] [stdout]     |
[INFO] [stdout] 886 |         let difficulty: String = match cpu_diff.trim().to_string().as_str() {
[INFO] [stdout]     |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_difficulty`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `debug`
[INFO] [stdout]    --> src/main.rs:128:21
[INFO] [stdout]     |
[INFO] [stdout] 128 |     fn print(&self, debug: bool) {
[INFO] [stdout]     |                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_debug`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `u` is never read
[INFO] [stdout]    --> src/main.rs:181:17
[INFO] [stdout]     |
[INFO] [stdout] 181 |         let mut u: u8 = 1;
[INFO] [stdout]     |                 ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `u` is never read
[INFO] [stdout]    --> src/main.rs:320:17
[INFO] [stdout]     |
[INFO] [stdout] 320 |         let mut u: u8 = 1; // used as the iter for get_new_pos()
[INFO] [stdout]     |                 ^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:715:34
[INFO] [stdout]     |
[INFO] [stdout] 715 |         if !debug { print!("."); stdout().flush(); }
[INFO] [stdout]     |                                  ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 17.18s
[INFO] running `Command { std: "docker" "inspect" "b69f1d2e60f42a51aad83ff839cd5d3d7aa7a6a868a1ab0f0f0bbc359b4c89f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b69f1d2e60f42a51aad83ff839cd5d3d7aa7a6a868a1ab0f0f0bbc359b4c89f3", kill_on_drop: false }`
[INFO] [stdout] b69f1d2e60f42a51aad83ff839cd5d3d7aa7a6a868a1ab0f0f0bbc359b4c89f3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-32/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-32/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8509bdacbb1f36462e70001fee051686a008710c26c5a96a99a292ba46fa169c
[INFO] running `Command { std: "docker" "start" "-a" "8509bdacbb1f36462e70001fee051686a008710c26c5a96a99a292ba46fa169c", kill_on_drop: false }`
[INFO] [stderr]    Compiling reversi v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `prev_player_score`
[INFO] [stdout]    --> src/main.rs:841:10
[INFO] [stdout]     |
[INFO] [stdout] 841 |     let (prev_player_score, prev_cpu_score): (u8, u8) = b.get_score();
[INFO] [stdout]     |          ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_prev_player_score`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `player_score`
[INFO] [stdout]    --> src/main.rs:857:14
[INFO] [stdout]     |
[INFO] [stdout] 857 |         let (player_score, cpu_score): (u8, u8) = new_board.get_score();
[INFO] [stdout]     |              ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_player_score`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `difficulty`
[INFO] [stdout]    --> src/main.rs:886:13
[INFO] [stdout]     |
[INFO] [stdout] 886 |         let difficulty: String = match cpu_diff.trim().to_string().as_str() {
[INFO] [stdout]     |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_difficulty`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `debug`
[INFO] [stdout]    --> src/main.rs:128:21
[INFO] [stdout]     |
[INFO] [stdout] 128 |     fn print(&self, debug: bool) {
[INFO] [stdout]     |                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_debug`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `u` is never read
[INFO] [stdout]    --> src/main.rs:181:17
[INFO] [stdout]     |
[INFO] [stdout] 181 |         let mut u: u8 = 1;
[INFO] [stdout]     |                 ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `u` is never read
[INFO] [stdout]    --> src/main.rs:320:17
[INFO] [stdout]     |
[INFO] [stdout] 320 |         let mut u: u8 = 1; // used as the iter for get_new_pos()
[INFO] [stdout]     |                 ^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:715:34
[INFO] [stdout]     |
[INFO] [stdout] 715 |         if !debug { print!("."); stdout().flush(); }
[INFO] [stdout]     |                                  ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 31.22s
[INFO] [stderr]   Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/reversi-1d006e289fcc4c79)
[INFO] running `Command { std: "docker" "inspect" "8509bdacbb1f36462e70001fee051686a008710c26c5a96a99a292ba46fa169c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8509bdacbb1f36462e70001fee051686a008710c26c5a96a99a292ba46fa169c", kill_on_drop: false }`
[INFO] [stdout] 8509bdacbb1f36462e70001fee051686a008710c26c5a96a99a292ba46fa169c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-32/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-32/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 36ca7692f145174f9b9bdbfd52a73088c17ac20583b9389f067f9914823b3586
[INFO] running `Command { std: "docker" "start" "-a" "36ca7692f145174f9b9bdbfd52a73088c17ac20583b9389f067f9914823b3586", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `prev_player_score`
[INFO] [stderr]    --> src/main.rs:841:10
[INFO] [stderr]     |
[INFO] [stderr] 841 |     let (prev_player_score, prev_cpu_score): (u8, u8) = b.get_score();
[INFO] [stderr]     |          ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_prev_player_score`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `player_score`
[INFO] [stderr]    --> src/main.rs:857:14
[INFO] [stderr]     |
[INFO] [stderr] 857 |         let (player_score, cpu_score): (u8, u8) = new_board.get_score();
[INFO] [stderr]     |              ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_player_score`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `difficulty`
[INFO] [stderr]    --> src/main.rs:886:13
[INFO] [stderr]     |
[INFO] [stderr] 886 |         let difficulty: String = match cpu_diff.trim().to_string().as_str() {
[INFO] [stderr]     |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_difficulty`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `debug`
[INFO] [stderr]    --> src/main.rs:128:21
[INFO] [stderr]     |
[INFO] [stderr] 128 |     fn print(&self, debug: bool) {
[INFO] [stderr]     |                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_debug`
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `u` is never read
[INFO] [stderr]    --> src/main.rs:181:17
[INFO] [stderr]     |
[INFO] [stderr] 181 |         let mut u: u8 = 1;
[INFO] [stderr]     |                 ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `u` is never read
[INFO] [stderr]    --> src/main.rs:320:17
[INFO] [stderr]     |
[INFO] [stderr] 320 |         let mut u: u8 = 1; // used as the iter for get_new_pos()
[INFO] [stderr]     |                 ^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/main.rs:715:34
[INFO] [stderr]     |
[INFO] [stderr] 715 |         if !debug { print!("."); stdout().flush(); }
[INFO] [stderr]     |                                  ^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: `reversi` (bin "reversi" test) generated 7 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/reversi-1d006e289fcc4c79)
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "36ca7692f145174f9b9bdbfd52a73088c17ac20583b9389f067f9914823b3586", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "36ca7692f145174f9b9bdbfd52a73088c17ac20583b9389f067f9914823b3586", kill_on_drop: false }`
[INFO] [stdout] 36ca7692f145174f9b9bdbfd52a73088c17ac20583b9389f067f9914823b3586