[INFO] cloning repository https://github.com/cosmobobak/iridium-oxide
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cosmobobak/iridium-oxide" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcosmobobak%2Firidium-oxide", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcosmobobak%2Firidium-oxide'...
[INFO] [stderr] error: copy-fd: write returned: No space left on device
[INFO] [stderr] fatal: cannot copy '/usr/share/git-core/templates/hooks/sendemail-validate.sample' to '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcosmobobak%2Firidium-oxide/hooks/sendemail-validate.sample': No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 1)
[INFO] cloning repository https://github.com/cosmobobak/iridium-oxide
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cosmobobak/iridium-oxide" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcosmobobak%2Firidium-oxide", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcosmobobak%2Firidium-oxide'...
[INFO] [stderr] error: copy-fd: write returned: No space left on device
[INFO] [stderr] fatal: cannot copy '/usr/share/git-core/templates/hooks/pre-applypatch.sample' to '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcosmobobak%2Firidium-oxide/hooks/pre-applypatch.sample': No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 2)
[INFO] cloning repository https://github.com/cosmobobak/iridium-oxide
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cosmobobak/iridium-oxide" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcosmobobak%2Firidium-oxide", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcosmobobak%2Firidium-oxide'...
[INFO] [stderr] error: copy-fd: write returned: No space left on device
[INFO] [stderr] fatal: cannot copy '/usr/share/git-core/templates/hooks/fsmonitor-watchman.sample' to '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcosmobobak%2Firidium-oxide/hooks/fsmonitor-watchman.sample': No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 3)
[INFO] cloning repository https://github.com/cosmobobak/iridium-oxide
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cosmobobak/iridium-oxide" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcosmobobak%2Firidium-oxide", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcosmobobak%2Firidium-oxide'...
[INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcosmobobak%2Firidium-oxide: No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 4)
[INFO] cloning repository https://github.com/cosmobobak/iridium-oxide
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cosmobobak/iridium-oxide" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcosmobobak%2Firidium-oxide", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcosmobobak%2Firidium-oxide'...
[INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcosmobobak%2Firidium-oxide: No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 5)
[INFO] cloning repository https://github.com/cosmobobak/iridium-oxide
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cosmobobak/iridium-oxide" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcosmobobak%2Firidium-oxide", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcosmobobak%2Firidium-oxide'...
[INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcosmobobak%2Firidium-oxide: No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 6)
[INFO] cloning repository https://github.com/cosmobobak/iridium-oxide
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cosmobobak/iridium-oxide" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcosmobobak%2Firidium-oxide", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcosmobobak%2Firidium-oxide'...
[INFO] [stderr] error: failed to write new configuration file /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcosmobobak%2Firidium-oxide/config.lock
[INFO] [stderr] fatal: could not set 'core.repositoryformatversion' to '0'
[WARN] Retrying crate fetch in 3 seconds (attempt 7)
[INFO] cloning repository https://github.com/cosmobobak/iridium-oxide
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cosmobobak/iridium-oxide" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcosmobobak%2Firidium-oxide", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcosmobobak%2Firidium-oxide'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c5cc6fc36e4ac5fa55b068c6eaf766211c225aa9
[INFO] checking cosmobobak/iridium-oxide against try#bf5ff6675cf10ce009ac02007b064a7cfc4509ac for pr-140558
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcosmobobak%2Firidium-oxide" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/cosmobobak/iridium-oxide on toolchain bf5ff6675cf10ce009ac02007b064a7cfc4509ac
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bf5ff6675cf10ce009ac02007b064a7cfc4509ac" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/cosmobobak/iridium-oxide
[INFO] finished tweaking git repo https://github.com/cosmobobak/iridium-oxide
[INFO] tweaked toml for git repo https://github.com/cosmobobak/iridium-oxide written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/cosmobobak/iridium-oxide already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bf5ff6675cf10ce009ac02007b064a7cfc4509ac" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+bf5ff6675cf10ce009ac02007b064a7cfc4509ac" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f76e9eed9840ba0c725d29aa1b9c25b843945c811eb81af12d7fe1cb9b9c1e8b
[INFO] running `Command { std: "docker" "start" "-a" "f76e9eed9840ba0c725d29aa1b9c25b843945c811eb81af12d7fe1cb9b9c1e8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f76e9eed9840ba0c725d29aa1b9c25b843945c811eb81af12d7fe1cb9b9c1e8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f76e9eed9840ba0c725d29aa1b9c25b843945c811eb81af12d7fe1cb9b9c1e8b", kill_on_drop: false }`
[INFO] [stdout] f76e9eed9840ba0c725d29aa1b9c25b843945c811eb81af12d7fe1cb9b9c1e8b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+bf5ff6675cf10ce009ac02007b064a7cfc4509ac" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a5eb65b6eb6b75dfe9bf2e7789a90286743b2bfcc5474ee438a2e3c5ea6b78c4
[INFO] running `Command { std: "docker" "start" "-a" "a5eb65b6eb6b75dfe9bf2e7789a90286743b2bfcc5474ee438a2e3c5ea6b78c4", kill_on_drop: false }`
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.7
[INFO] [stderr]    Compiling libc v0.2.118
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.7
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]    Compiling crossbeam-queue v0.3.5
[INFO] [stderr]    Compiling cozy-chess-types v0.2.1
[INFO] [stderr]     Checking ppv-lite86 v0.2.16
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking fastrand v1.8.0
[INFO] [stderr]     Checking fastapprox v0.3.1
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]     Checking crossbeam-channel v0.5.2
[INFO] [stderr]    Compiling cozy-chess v0.3.1
[INFO] [stderr]     Checking crossbeam-deque v0.8.1
[INFO] [stderr]     Checking getrandom v0.2.4
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking crossbeam v0.8.1
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking iridium-oxide v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]    --> src/mcts.rs:708:5
[INFO] [stdout]     |
[INFO] [stdout] 707 |     return fused_distribution.iter().enumerate().max_by_key(|(i, v)| **v).unwrap().0;
[INFO] [stdout]     |     -------------------------------------------------------------------------------- any code following this expression is unreachable
[INFO] [stdout] 708 |     let total_rollouts = fused_distribution.iter().sum::<u32>();
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]    --> src/mcts.rs:708:5
[INFO] [stdout]     |
[INFO] [stdout] 707 |     return fused_distribution.iter().enumerate().max_by_key(|(i, v)| **v).unwrap().0;
[INFO] [stdout]     |     -------------------------------------------------------------------------------- any code following this expression is unreachable
[INFO] [stdout] 708 |     let total_rollouts = fused_distribution.iter().sum::<u32>();
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/mcts.rs:707:63
[INFO] [stdout]     |
[INFO] [stdout] 707 |     return fused_distribution.iter().enumerate().max_by_key(|(i, v)| **v).unwrap().0;
[INFO] [stdout]     |                                                               ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `csv_header` is never used
[INFO] [stdout]   --> src/datageneration.rs:91:8
[INFO] [stdout]    |
[INFO] [stdout] 90 | pub trait VectoriseState: Game {
[INFO] [stdout]    |           -------------- associated function in this trait
[INFO] [stdout] 91 |     fn csv_header() -> String;
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `is_empty` is never used
[INFO] [stdout]   --> src/game.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 8  | pub trait MoveBuffer<Move>: Debug + Default + Index<usize, Output = Move> + Display {
[INFO] [stdout]    |           ---------- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 11 |     fn is_empty(&self) -> bool;
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `sort_moves` is never used
[INFO] [stdout]   --> src/game.rs:40:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub trait Game: Clone + Eq + Debug + Display + Default + Send + Sync {
[INFO] [stdout]    |           ---- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 40 |     fn sort_moves(&mut self, _moves: &mut Self::Buffer) {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `iter_bits` is never used
[INFO] [stdout]  --> src/iterbits.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub trait BitIterable {
[INFO] [stdout]   |           ----------- method in this trait
[INFO] [stdout] 2 |     fn iter_bits(self) -> IterBits;
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `rollout_cutoff_length` is never used
[INFO] [stdout]    --> src/mcts.rs:302:8
[INFO] [stdout]     |
[INFO] [stdout] 301 | pub trait MCTSExt: Game {
[INFO] [stdout]     |           ------- associated function in this trait
[INFO] [stdout] 302 |     fn rollout_cutoff_length() -> usize {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `GameRecord` is never constructed
[INFO] [stdout]  --> src/record.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct GameRecord {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `GameRecordHeader` is never constructed
[INFO] [stdout]   --> src/record.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | struct GameRecordHeader {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `GameRecordEntry` is never constructed
[INFO] [stdout]   --> src/record.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 25 | struct GameRecordEntry {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `add_entry`, `write_to`, and `read_from` are never used
[INFO] [stdout]   --> src/record.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 34 | impl GameRecord {
[INFO] [stdout]    | --------------- associated items in this implementation
[INFO] [stdout] 35 |     /// Creates a new game record.
[INFO] [stdout] 36 |     fn new(header: GameRecordHeader) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 44 |     fn add_entry(&mut self, entry: GameRecordEntry) {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 49 |     fn write_to<W: io::Write>(&self, mut writer: W) -> io::Result<()> {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 82 |     fn read_from<R: io::Read>(mut reader: R) -> io::Result<Self> {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/mcts.rs:707:63
[INFO] [stdout]     |
[INFO] [stdout] 707 |     return fused_distribution.iter().enumerate().max_by_key(|(i, v)| **v).unwrap().0;
[INFO] [stdout]     |                                                               ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `csv_header` is never used
[INFO] [stdout]   --> src/datageneration.rs:91:8
[INFO] [stdout]    |
[INFO] [stdout] 90 | pub trait VectoriseState: Game {
[INFO] [stdout]    |           -------------- associated function in this trait
[INFO] [stdout] 91 |     fn csv_header() -> String;
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `is_empty` is never used
[INFO] [stdout]   --> src/game.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 8  | pub trait MoveBuffer<Move>: Debug + Default + Index<usize, Output = Move> + Display {
[INFO] [stdout]    |           ---------- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 11 |     fn is_empty(&self) -> bool;
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `sort_moves` is never used
[INFO] [stdout]   --> src/game.rs:40:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub trait Game: Clone + Eq + Debug + Display + Default + Send + Sync {
[INFO] [stdout]    |           ---- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 40 |     fn sort_moves(&mut self, _moves: &mut Self::Buffer) {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `iter_bits` is never used
[INFO] [stdout]  --> src/iterbits.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub trait BitIterable {
[INFO] [stdout]   |           ----------- method in this trait
[INFO] [stdout] 2 |     fn iter_bits(self) -> IterBits;
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `rollout_cutoff_length` is never used
[INFO] [stdout]    --> src/mcts.rs:302:8
[INFO] [stdout]     |
[INFO] [stdout] 301 | pub trait MCTSExt: Game {
[INFO] [stdout]     |           ------- associated function in this trait
[INFO] [stdout] 302 |     fn rollout_cutoff_length() -> usize {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.48s
[INFO] running `Command { std: "docker" "inspect" "a5eb65b6eb6b75dfe9bf2e7789a90286743b2bfcc5474ee438a2e3c5ea6b78c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a5eb65b6eb6b75dfe9bf2e7789a90286743b2bfcc5474ee438a2e3c5ea6b78c4", kill_on_drop: false }`
[INFO] [stdout] a5eb65b6eb6b75dfe9bf2e7789a90286743b2bfcc5474ee438a2e3c5ea6b78c4
