[INFO] cloning repository https://github.com/tolumide-ng/checkers
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tolumide-ng/checkers" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftolumide-ng%2Fcheckers", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftolumide-ng%2Fcheckers'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e70714f84bfcff71b77759efcea0b1b6b93a9925
[INFO] checking tolumide-ng/checkers against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftolumide-ng%2Fcheckers" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/tolumide-ng/checkers
[INFO] finished tweaking git repo https://github.com/tolumide-ng/checkers
[INFO] tweaked toml for git repo https://github.com/tolumide-ng/checkers written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/tolumide-ng/checkers on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/tolumide-ng/checkers 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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: unused manifest key: build
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3cd3dd800bd5773486f418e1a1a80e0f796469b513052bd6f0403d41b4bf9105
[INFO] running `Command { std: "docker" "start" "-a" "3cd3dd800bd5773486f418e1a1a80e0f796469b513052bd6f0403d41b4bf9105", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3cd3dd800bd5773486f418e1a1a80e0f796469b513052bd6f0403d41b4bf9105", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3cd3dd800bd5773486f418e1a1a80e0f796469b513052bd6f0403d41b4bf9105", kill_on_drop: false }`
[INFO] [stdout] 3cd3dd800bd5773486f418e1a1a80e0f796469b513052bd6f0403d41b4bf9105
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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 -Dunmustuse_in_always_ok" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] eed006362184bfdebac1d580a4bcc1c246ea5f17f6c0cf58b13caf612ad02580
[INFO] running `Command { std: "docker" "start" "-a" "eed006362184bfdebac1d580a4bcc1c246ea5f17f6c0cf58b13caf612ad02580", kill_on_drop: false }`
[INFO] [stderr] warning: unused manifest key: build
[INFO] [stderr]    Compiling libc v0.2.172
[INFO] [stderr]    Compiling syn v2.0.100
[INFO] [stderr]     Checking getrandom v0.2.16
[INFO] [stderr]    Compiling thiserror-impl v2.0.12
[INFO] [stderr]     Checking thiserror v2.0.12
[INFO] [stderr]     Checking tiqtak v1.0.7 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `child` is never read
[INFO] [stdout]    --> src/mcts/algo/tree_search.rs:182:25
[INFO] [stdout]     |
[INFO] [stdout] 182 |         let mut child = None;
[INFO] [stdout]     |                         ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]  --> src/game/model/bits.rs:5:19
[INFO] [stdout]   |
[INFO] [stdout] 4 | impl Bits {
[INFO] [stdout]   | --------- associated function in this implementation
[INFO] [stdout] 5 |     pub(crate) fn new(n: u32) -> Self {
[INFO] [stdout]   |                   ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `inc`, and `zero` are never used
[INFO] [stdout]   --> src/game/utils.rs:36:19
[INFO] [stdout]    |
[INFO] [stdout] 35 | impl Qmvs {
[INFO] [stdout]    | --------- associated items in this implementation
[INFO] [stdout] 36 |     pub(crate) fn new() -> Self {
[INFO] [stdout]    |                   ^^^
[INFO] [stdout] ...
[INFO] [stdout] 40 |     pub(crate) fn inc(&mut self, turn: Player) {
[INFO] [stdout]    |                   ^^^
[INFO] [stdout] ...
[INFO] [stdout] 44 |     pub(crate) fn zero(&mut self) {
[INFO] [stdout]    |                   ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `MDP` is never used
[INFO] [stdout]  --> src/mcts/algo/mdp.rs:6:11
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub trait MDP {
[INFO] [stdout]   |           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Strategy` is never used
[INFO] [stdout]  --> src/mcts/utils/strategy.rs:1:17
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub(crate) enum Strategy {
[INFO] [stdout]   |                 ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `child` is never read
[INFO] [stdout]    --> src/mcts/algo/tree_search.rs:182:25
[INFO] [stdout]     |
[INFO] [stdout] 182 |         let mut child = None;
[INFO] [stdout]     |                         ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]  --> src/game/model/bits.rs:5:19
[INFO] [stdout]   |
[INFO] [stdout] 4 | impl Bits {
[INFO] [stdout]   | --------- associated function in this implementation
[INFO] [stdout] 5 |     pub(crate) fn new(n: u32) -> Self {
[INFO] [stdout]   |                   ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `inc`, and `zero` are never used
[INFO] [stdout]   --> src/game/utils.rs:36:19
[INFO] [stdout]    |
[INFO] [stdout] 35 | impl Qmvs {
[INFO] [stdout]    | --------- associated items in this implementation
[INFO] [stdout] 36 |     pub(crate) fn new() -> Self {
[INFO] [stdout]    |                   ^^^
[INFO] [stdout] ...
[INFO] [stdout] 40 |     pub(crate) fn inc(&mut self, turn: Player) {
[INFO] [stdout]    |                   ^^^
[INFO] [stdout] ...
[INFO] [stdout] 44 |     pub(crate) fn zero(&mut self) {
[INFO] [stdout]    |                   ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `MDP` is never used
[INFO] [stdout]  --> src/mcts/algo/mdp.rs:6:11
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub trait MDP {
[INFO] [stdout]   |           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Strategy` is never used
[INFO] [stdout]  --> src/mcts/utils/strategy.rs:1:17
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub(crate) enum Strategy {
[INFO] [stdout]   |                 ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<[u8; 8], Infallible>
[INFO] [stdout]   --> src/mcts/utils/rand.rs:12:35
[INFO] [stdout]    |
[INFO] [stdout] 12 |         8 => usize::from_le_bytes(buf.try_into().unwrap()),
[INFO] [stdout]    |                                   ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<[u8; 8], Infallible>
[INFO] [stdout]   --> src/mcts/utils/rand.rs:12:35
[INFO] [stdout]    |
[INFO] [stdout] 12 |         8 => usize::from_le_bytes(buf.try_into().unwrap()),
[INFO] [stdout]    |                                   ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `tiqtak` (lib) due to 1 previous error; 5 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `tiqtak` (lib test) due to 1 previous error; 5 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "eed006362184bfdebac1d580a4bcc1c246ea5f17f6c0cf58b13caf612ad02580", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eed006362184bfdebac1d580a4bcc1c246ea5f17f6c0cf58b13caf612ad02580", kill_on_drop: false }`
[INFO] [stdout] eed006362184bfdebac1d580a4bcc1c246ea5f17f6c0cf58b13caf612ad02580
