[INFO] cloning repository https://github.com/llukehaskell/rubiks-cube
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/llukehaskell/rubiks-cube" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fllukehaskell%2Frubiks-cube", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fllukehaskell%2Frubiks-cube'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f20856f93e867e417512d6a7b45f2b732df3b543
[INFO] testing llukehaskell/rubiks-cube against beta-2026-04-21 for beta-1.96-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fllukehaskell%2Frubiks-cube" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/llukehaskell/rubiks-cube
[INFO] finished tweaking git repo https://github.com/llukehaskell/rubiks-cube
[INFO] tweaked toml for git repo https://github.com/llukehaskell/rubiks-cube written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/llukehaskell/rubiks-cube on toolchain beta-2026-04-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/llukehaskell/rubiks-cube 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" "+beta-2026-04-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c0c7f25a29f8a598a011544a9603535c710d1417dc28b4d4845f2f8728050316
[INFO] running `Command { std: "docker" "start" "-a" "c0c7f25a29f8a598a011544a9603535c710d1417dc28b4d4845f2f8728050316", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c0c7f25a29f8a598a011544a9603535c710d1417dc28b4d4845f2f8728050316", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c0c7f25a29f8a598a011544a9603535c710d1417dc28b4d4845f2f8728050316", kill_on_drop: false }`
[INFO] [stdout] c0c7f25a29f8a598a011544a9603535c710d1417dc28b4d4845f2f8728050316
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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=warn" "-e" "RUSTDOCFLAGS=--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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3d4f0473510a58febbc3c7d815965eb87e5e18aecbb5e94447af4939fa78c381
[INFO] running `Command { std: "docker" "start" "-a" "3d4f0473510a58febbc3c7d815965eb87e5e18aecbb5e94447af4939fa78c381", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling colored v2.0.0
[INFO] [stderr]    Compiling project v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `colored::Colorize`
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use colored::Colorize;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `tmp1` is never read
[INFO] [stdout]   --> src/main.rs:68:23
[INFO] [stdout]    |
[INFO] [stdout] 68 |     let mut tmp1:u8 = 8;
[INFO] [stdout]    |                       ^ this value is reassigned later and never used
[INFO] [stdout] 69 |     let mut tmp2:u8 = 8;
[INFO] [stdout] 70 |     tmp1 = c[x];
[INFO] [stdout]    |     ----------- `tmp1` is overwritten here before the previous value is read
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `tmp2` is never read
[INFO] [stdout]   --> src/main.rs:69:23
[INFO] [stdout]    |
[INFO] [stdout] 69 |     let mut tmp2:u8 = 8;
[INFO] [stdout]    |                       ^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 72 |     tmp2 = c[y];
[INFO] [stdout]    |     ----------- `tmp2` is overwritten here before the previous value is read
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `tmp1` is never read
[INFO] [stdout]   --> src/main.rs:81:23
[INFO] [stdout]    |
[INFO] [stdout] 81 |     let mut tmp1:u8 = 8;
[INFO] [stdout]    |                       ^ this value is reassigned later and never used
[INFO] [stdout] 82 |     let mut tmp2:u8 = 8;
[INFO] [stdout] 83 |     tmp1 = c[n];
[INFO] [stdout]    |     ----------- `tmp1` is overwritten here before the previous value is read
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `tmp2` is never read
[INFO] [stdout]   --> src/main.rs:82:23
[INFO] [stdout]    |
[INFO] [stdout] 82 |     let mut tmp2:u8 = 8;
[INFO] [stdout]    |                       ^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 85 |     tmp2 = c[p];
[INFO] [stdout]    |     ----------- `tmp2` is overwritten here before the previous value is read
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.71s
[INFO] running `Command { std: "docker" "inspect" "3d4f0473510a58febbc3c7d815965eb87e5e18aecbb5e94447af4939fa78c381", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3d4f0473510a58febbc3c7d815965eb87e5e18aecbb5e94447af4939fa78c381", kill_on_drop: false }`
[INFO] [stdout] 3d4f0473510a58febbc3c7d815965eb87e5e18aecbb5e94447af4939fa78c381
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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=warn" "-e" "RUSTDOCFLAGS=--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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b579ac7e46263ce77c08c05cc07118f8bad0e8b3ec8bca154a4d551512958da7
[INFO] running `Command { std: "docker" "start" "-a" "b579ac7e46263ce77c08c05cc07118f8bad0e8b3ec8bca154a4d551512958da7", kill_on_drop: false }`
[INFO] [stderr]    Compiling project v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `colored::Colorize`
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use colored::Colorize;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `tmp1` is never read
[INFO] [stdout]   --> src/main.rs:68:23
[INFO] [stdout]    |
[INFO] [stdout] 68 |     let mut tmp1:u8 = 8;
[INFO] [stdout]    |                       ^ this value is reassigned later and never used
[INFO] [stdout] 69 |     let mut tmp2:u8 = 8;
[INFO] [stdout] 70 |     tmp1 = c[x];
[INFO] [stdout]    |     ----------- `tmp1` is overwritten here before the previous value is read
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `tmp2` is never read
[INFO] [stdout]   --> src/main.rs:69:23
[INFO] [stdout]    |
[INFO] [stdout] 69 |     let mut tmp2:u8 = 8;
[INFO] [stdout]    |                       ^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 72 |     tmp2 = c[y];
[INFO] [stdout]    |     ----------- `tmp2` is overwritten here before the previous value is read
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `tmp1` is never read
[INFO] [stdout]   --> src/main.rs:81:23
[INFO] [stdout]    |
[INFO] [stdout] 81 |     let mut tmp1:u8 = 8;
[INFO] [stdout]    |                       ^ this value is reassigned later and never used
[INFO] [stdout] 82 |     let mut tmp2:u8 = 8;
[INFO] [stdout] 83 |     tmp1 = c[n];
[INFO] [stdout]    |     ----------- `tmp1` is overwritten here before the previous value is read
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `tmp2` is never read
[INFO] [stdout]   --> src/main.rs:82:23
[INFO] [stdout]    |
[INFO] [stdout] 82 |     let mut tmp2:u8 = 8;
[INFO] [stdout]    |                       ^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 85 |     tmp2 = c[p];
[INFO] [stdout]    |     ----------- `tmp2` is overwritten here before the previous value is read
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.42s
[INFO] running `Command { std: "docker" "inspect" "b579ac7e46263ce77c08c05cc07118f8bad0e8b3ec8bca154a4d551512958da7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b579ac7e46263ce77c08c05cc07118f8bad0e8b3ec8bca154a4d551512958da7", kill_on_drop: false }`
[INFO] [stdout] b579ac7e46263ce77c08c05cc07118f8bad0e8b3ec8bca154a4d551512958da7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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=warn" "-e" "RUSTDOCFLAGS=--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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] e27c9f5953b55da61dd35d2cc30fc8590e54323f80845d534b094ecc66389349
[INFO] running `Command { std: "docker" "start" "-a" "e27c9f5953b55da61dd35d2cc30fc8590e54323f80845d534b094ecc66389349", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `colored::Colorize`
[INFO] [stderr]  --> src/main.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use colored::Colorize;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `tmp1` is never read
[INFO] [stderr]   --> src/main.rs:68:23
[INFO] [stderr]    |
[INFO] [stderr] 68 |     let mut tmp1:u8 = 8;
[INFO] [stderr]    |                       ^ this value is reassigned later and never used
[INFO] [stderr] 69 |     let mut tmp2:u8 = 8;
[INFO] [stderr] 70 |     tmp1 = c[x];
[INFO] [stderr]    |     ----------- `tmp1` is overwritten here before the previous value is read
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `tmp2` is never read
[INFO] [stderr]   --> src/main.rs:69:23
[INFO] [stderr]    |
[INFO] [stderr] 69 |     let mut tmp2:u8 = 8;
[INFO] [stderr]    |                       ^ this value is reassigned later and never used
[INFO] [stderr] ...
[INFO] [stderr] 72 |     tmp2 = c[y];
[INFO] [stderr]    |     ----------- `tmp2` is overwritten here before the previous value is read
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `tmp1` is never read
[INFO] [stderr]   --> src/main.rs:81:23
[INFO] [stderr]    |
[INFO] [stderr] 81 |     let mut tmp1:u8 = 8;
[INFO] [stderr]    |                       ^ this value is reassigned later and never used
[INFO] [stderr] 82 |     let mut tmp2:u8 = 8;
[INFO] [stderr] 83 |     tmp1 = c[n];
[INFO] [stderr]    |     ----------- `tmp1` is overwritten here before the previous value is read
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `tmp2` is never read
[INFO] [stderr]   --> src/main.rs:82:23
[INFO] [stderr]    |
[INFO] [stderr] 82 |     let mut tmp2:u8 = 8;
[INFO] [stderr]    |                       ^ this value is reassigned later and never used
[INFO] [stderr] ...
[INFO] [stderr] 85 |     tmp2 = c[p];
[INFO] [stderr]    |     ----------- `tmp2` is overwritten here before the previous value is read
[INFO] [stderr] 
[INFO] [stderr] warning: `project` (bin "project" test) generated 5 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/project-098f3936ab8cdaf6)
[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" "e27c9f5953b55da61dd35d2cc30fc8590e54323f80845d534b094ecc66389349", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e27c9f5953b55da61dd35d2cc30fc8590e54323f80845d534b094ecc66389349", kill_on_drop: false }`
[INFO] [stdout] e27c9f5953b55da61dd35d2cc30fc8590e54323f80845d534b094ecc66389349
