[INFO] cloning repository https://github.com/illef/beads_puzzle
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/illef/beads_puzzle" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fillef%2Fbeads_puzzle", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fillef%2Fbeads_puzzle'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 27482e1a23097aeec93d7c9faca58370f1ead197
[INFO] testing illef/beads_puzzle/27482e1a23097aeec93d7c9faca58370f1ead197 against master#0d162b25edd5bf0dba9a22e83b614f1113e90474 for pr-150681-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fillef%2Fbeads_puzzle" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/illef/beads_puzzle
[INFO] finished tweaking git repo https://github.com/illef/beads_puzzle
[INFO] tweaked toml for git repo https://github.com/illef/beads_puzzle written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/illef/beads_puzzle on toolchain 0d162b25edd5bf0dba9a22e83b614f1113e90474
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0d162b25edd5bf0dba9a22e83b614f1113e90474" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/illef/beads_puzzle 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" "+0d162b25edd5bf0dba9a22e83b614f1113e90474" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded hsl v0.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+0d162b25edd5bf0dba9a22e83b614f1113e90474" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] abdef297ada5ecc8ac7f36b88ca9878d8591330b8da6e5fb16893a9aabf33fbd
[INFO] running `Command { std: "docker" "start" "-a" "abdef297ada5ecc8ac7f36b88ca9878d8591330b8da6e5fb16893a9aabf33fbd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "abdef297ada5ecc8ac7f36b88ca9878d8591330b8da6e5fb16893a9aabf33fbd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "abdef297ada5ecc8ac7f36b88ca9878d8591330b8da6e5fb16893a9aabf33fbd", kill_on_drop: false }`
[INFO] [stdout] abdef297ada5ecc8ac7f36b88ca9878d8591330b8da6e5fb16893a9aabf33fbd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+0d162b25edd5bf0dba9a22e83b614f1113e90474" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ca2be707687d14464fe4565849f312b89d954c8e8a2c941a626ddee1eeb1048b
[INFO] running `Command { std: "docker" "start" "-a" "ca2be707687d14464fe4565849f312b89d954c8e8a2c941a626ddee1eeb1048b", kill_on_drop: false }`
[INFO] [stderr]    Compiling hsl v0.1.1
[INFO] [stderr]    Compiling ansi_term v0.12.1
[INFO] [stderr]    Compiling beads_puzzle v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0658]: custom inner attributes are unstable
[INFO] [stdout]  --> src/block.rs:2:4
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![rustfmt::skip]
[INFO] [stdout]   |    ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: see issue #54726 <https://github.com/rust-lang/rust/issues/54726> for more information
[INFO] [stdout]   = help: add `#![feature(custom_inner_attributes)]` to the crate attributes to enable
[INFO] [stdout]   = note: this compiler was built on 2026-01-05; consider upgrading it if it is out of date
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:215:9
[INFO] [stdout]     |
[INFO] [stdout] 215 |     let mut blocks = Block::get_all();
[INFO] [stdout]     |         ----^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0658`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `beads_puzzle` (bin "beads_puzzle") due to 1 previous error; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "ca2be707687d14464fe4565849f312b89d954c8e8a2c941a626ddee1eeb1048b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ca2be707687d14464fe4565849f312b89d954c8e8a2c941a626ddee1eeb1048b", kill_on_drop: false }`
[INFO] [stdout] ca2be707687d14464fe4565849f312b89d954c8e8a2c941a626ddee1eeb1048b