[INFO] fetching crate git-kickflip 0.1.0...
[INFO] testing git-kickflip-0.1.0 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate git-kickflip 0.1.0 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate git-kickflip 0.1.0
[INFO] finished tweaking crates.io crate git-kickflip 0.1.0
[INFO] tweaked toml for crates.io crate git-kickflip 0.1.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate git-kickflip 0.1.0 on toolchain beta-2025-09-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate git-kickflip 0.1.0 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-2025-09-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b801b015bfe17cefd88d1785cfb6181b0bae601c8f7ecb95b7194f5093f20b1c
[INFO] running `Command { std: "docker" "start" "-a" "b801b015bfe17cefd88d1785cfb6181b0bae601c8f7ecb95b7194f5093f20b1c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b801b015bfe17cefd88d1785cfb6181b0bae601c8f7ecb95b7194f5093f20b1c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b801b015bfe17cefd88d1785cfb6181b0bae601c8f7ecb95b7194f5093f20b1c", kill_on_drop: false }`
[INFO] [stdout] b801b015bfe17cefd88d1785cfb6181b0bae601c8f7ecb95b7194f5093f20b1c
[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=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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2f588bb1a5bde2b4ec21d13813545edde85374529d3b7683aafdd3cf7484d02c
[INFO] running `Command { std: "docker" "start" "-a" "2f588bb1a5bde2b4ec21d13813545edde85374529d3b7683aafdd3cf7484d02c", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.77
[INFO] [stderr]    Compiling libc v0.2.103
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling typenum v1.14.0
[INFO] [stderr]    Compiling gimli v0.25.0
[INFO] [stderr]    Compiling unicode-width v0.1.9
[INFO] [stderr]    Compiling execute-command-tokens v0.1.4
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling backtrace v0.3.61
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]    Compiling ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling object v0.26.2
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling addr2line v0.16.0
[INFO] [stderr]    Compiling synstructure v0.12.5
[INFO] [stderr]    Compiling execute-command-macro-impl v0.1.6
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling structopt-derive v0.4.16
[INFO] [stderr]    Compiling strum_macros v0.21.1
[INFO] [stderr]    Compiling execute-command-macro v0.1.6
[INFO] [stderr]    Compiling failure v0.1.8
[INFO] [stderr]    Compiling execute v0.2.9
[INFO] [stderr]    Compiling structopt v0.3.23
[INFO] [stderr]    Compiling git-kickflip 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(exit_status_error)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `git-kickflip` (bin "git-kickflip") due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "2f588bb1a5bde2b4ec21d13813545edde85374529d3b7683aafdd3cf7484d02c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2f588bb1a5bde2b4ec21d13813545edde85374529d3b7683aafdd3cf7484d02c", kill_on_drop: false }`
[INFO] [stdout] 2f588bb1a5bde2b4ec21d13813545edde85374529d3b7683aafdd3cf7484d02c