[INFO] cloning repository https://github.com/deployAt/winner
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/deployAt/winner" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FdeployAt%2Fwinner", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FdeployAt%2Fwinner'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 10f27721d0f234a760f703c5f1f724a9181f282b
[INFO] testing deployAt/winner against beta-2026-04-21 for beta-1.96-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FdeployAt%2Fwinner" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/deployAt/winner
[INFO] finished tweaking git repo https://github.com/deployAt/winner
[INFO] tweaked toml for git repo https://github.com/deployAt/winner written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/deployAt/winner 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/deployAt/winner 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] [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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] bf7fb81bacff4e8611cece7d40fba90d62aadcd3d1f2e6ff873016455fabad21
[INFO] running `Command { std: "docker" "start" "-a" "bf7fb81bacff4e8611cece7d40fba90d62aadcd3d1f2e6ff873016455fabad21", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bf7fb81bacff4e8611cece7d40fba90d62aadcd3d1f2e6ff873016455fabad21", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bf7fb81bacff4e8611cece7d40fba90d62aadcd3d1f2e6ff873016455fabad21", kill_on_drop: false }`
[INFO] [stdout] bf7fb81bacff4e8611cece7d40fba90d62aadcd3d1f2e6ff873016455fabad21
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] b3fe1f5f80915eb4794637d23844fb30533ce520329d6643c8f77ca95eee6fb7
[INFO] running `Command { std: "docker" "start" "-a" "b3fe1f5f80915eb4794637d23844fb30533ce520329d6643c8f77ca95eee6fb7", kill_on_drop: false }`
[INFO] [stderr]    Compiling winner v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(slice_group_by)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `slice_group_by` has been stable since 1.77.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(slice_group_by)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `group_by` found for struct `Vec<(Bet<u32>, u8)>` in the current scope
[INFO] [stdout]   --> src/main.rs:45:53
[INFO] [stdout]    |
[INFO] [stdout] 45 |     let winners_grouped_by_hits = winners_to_reward.group_by(|(_, a_hits), (_, b_hits)| a_hits == b_hits);
[INFO] [stdout]    |                                                     ^^^^^^^^ method not found in `Vec<(Bet<u32>, u8)>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `winner` (bin "winner") due to 2 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "b3fe1f5f80915eb4794637d23844fb30533ce520329d6643c8f77ca95eee6fb7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b3fe1f5f80915eb4794637d23844fb30533ce520329d6643c8f77ca95eee6fb7", kill_on_drop: false }`
[INFO] [stdout] b3fe1f5f80915eb4794637d23844fb30533ce520329d6643c8f77ca95eee6fb7