[INFO] cloning repository https://github.com/hanshuebner/aoc-2023
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hanshuebner/aoc-2023" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhanshuebner%2Faoc-2023", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhanshuebner%2Faoc-2023'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 84d52e6b0d350fc956cbda087544ea272716c03e
[INFO] testing hanshuebner/aoc-2023 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%2Fhanshuebner%2Faoc-2023" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/hanshuebner/aoc-2023
[INFO] finished tweaking git repo https://github.com/hanshuebner/aoc-2023
[INFO] tweaked toml for git repo https://github.com/hanshuebner/aoc-2023 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/hanshuebner/aoc-2023 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/hanshuebner/aoc-2023 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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] f705481d330532e7632c019616fa665772fb28243ed4b04161d85a2f96bb2b67
[INFO] running `Command { std: "docker" "start" "-a" "f705481d330532e7632c019616fa665772fb28243ed4b04161d85a2f96bb2b67", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f705481d330532e7632c019616fa665772fb28243ed4b04161d85a2f96bb2b67", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f705481d330532e7632c019616fa665772fb28243ed4b04161d85a2f96bb2b67", kill_on_drop: false }`
[INFO] [stdout] f705481d330532e7632c019616fa665772fb28243ed4b04161d85a2f96bb2b67
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 42ddd1eb7469da68e54dcfe73cbea2de8f9cab48ca095f45a391b34de66ce717
[INFO] running `Command { std: "docker" "start" "-a" "42ddd1eb7469da68e54dcfe73cbea2de8f9cab48ca095f45a391b34de66ce717", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.70
[INFO] [stderr]    Compiling libc v0.2.150
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling siphasher v0.3.11
[INFO] [stderr]    Compiling once_cell v1.18.0
[INFO] [stderr]    Compiling ahash v0.7.7
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling memchr v2.6.4
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling phf_shared v0.11.2
[INFO] [stderr]    Compiling rustversion v1.0.14
[INFO] [stderr]    Compiling regex-syntax v0.8.2
[INFO] [stderr]    Compiling num-traits v0.2.17
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling either v1.9.0
[INFO] [stderr]    Compiling getrandom v0.2.11
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling phf_generator v0.11.2
[INFO] [stderr]    Compiling aho-corasick v1.1.2
[INFO] [stderr]    Compiling hashbrown v0.12.3
[INFO] [stderr]    Compiling itertools v0.10.5
[INFO] [stderr]    Compiling syn v2.0.39
[INFO] [stderr]    Compiling prog1 v1.0.0
[INFO] [stderr]    Compiling strum v0.25.0
[INFO] [stderr]    Compiling partial_application v0.2.1
[INFO] [stderr]    Compiling lru v0.7.8
[INFO] [stderr]    Compiling regex-automata v0.4.3
[INFO] [stderr]    Compiling memoize-inner v0.4.0
[INFO] [stderr]    Compiling trace v0.1.7
[INFO] [stderr]    Compiling regex v1.10.2
[INFO] [stderr]    Compiling memoize v0.4.1
[INFO] [stderr]    Compiling phf_macros v0.11.2
[INFO] [stderr]    Compiling strum_macros v0.25.3
[INFO] [stderr]    Compiling phf v0.11.2
[INFO] [stderr]    Compiling advent_of_code v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/bin/day7.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(slice_group_by)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `trace::trace`
[INFO] [stdout]  --> src/bin/day7.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use trace::trace;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[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/bin/day7.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<usize>` in the current scope
[INFO] [stdout]   --> src/bin/day7.rs:85:10
[INFO] [stdout]    |
[INFO] [stdout] 83 |       let mut strands: Vec<usize> = sorted_by_card_value
[INFO] [stdout]    |  ___________________________________-
[INFO] [stdout] 84 | |         .to_vec()
[INFO] [stdout] 85 | |         .group_by(|&a, &b| a == b)
[INFO] [stdout]    | |         -^^^^^^^^ method not found in `Vec<usize>`
[INFO] [stdout]    | |_________|
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `group_by` found for struct `Vec<usize>` in the current scope
[INFO] [stdout]   --> src/bin/day7.rs:98:10
[INFO] [stdout]    |
[INFO] [stdout] 96 |       let mut strands_and_lengths: Vec<(usize, usize)> = sorted_by_card_value
[INFO] [stdout]    |  ________________________________________________________-
[INFO] [stdout] 97 | |         .to_vec()
[INFO] [stdout] 98 | |         .group_by(|&a, &b| a == b)
[INFO] [stdout]    | |         -^^^^^^^^ method not found in `Vec<usize>`
[INFO] [stdout]    | |_________|
[INFO] [stdout]    |
[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 `advent_of_code` (bin "day7") due to 3 previous errors; 2 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "42ddd1eb7469da68e54dcfe73cbea2de8f9cab48ca095f45a391b34de66ce717", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "42ddd1eb7469da68e54dcfe73cbea2de8f9cab48ca095f45a391b34de66ce717", kill_on_drop: false }`
[INFO] [stdout] 42ddd1eb7469da68e54dcfe73cbea2de8f9cab48ca095f45a391b34de66ce717
