[INFO] fetching crate sweet 0.4.2...
[INFO] testing sweet-0.4.2 against 1.91.0 for beta-1.92-2
[INFO] extracting crate sweet 0.4.2 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate sweet 0.4.2
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate sweet 0.4.2
[INFO] tweaked toml for crates.io crate sweet 0.4.2 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate sweet 0.4.2 on toolchain 1.91.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate sweet 0.4.2 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" "+1.91.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 873ad48c998d510c064b3f532c2ada7d7ba6814c9d6bd40a4ad80e2217d19b9e
[INFO] running `Command { std: "docker" "start" "-a" "873ad48c998d510c064b3f532c2ada7d7ba6814c9d6bd40a4ad80e2217d19b9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "873ad48c998d510c064b3f532c2ada7d7ba6814c9d6bd40a4ad80e2217d19b9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "873ad48c998d510c064b3f532c2ada7d7ba6814c9d6bd40a4ad80e2217d19b9e", kill_on_drop: false }`
[INFO] [stdout] 873ad48c998d510c064b3f532c2ada7d7ba6814c9d6bd40a4ad80e2217d19b9e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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=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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b3d019c3ff38dd73a1063266f963b438fe7957bbc32e1f62ab7d33bb74db810e
[INFO] running `Command { std: "docker" "start" "-a" "b3d019c3ff38dd73a1063266f963b438fe7957bbc32e1f62ab7d33bb74db810e", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.101
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[INFO] [stderr]    Compiling extend v1.2.0
[INFO] [stderr]    Compiling tokio-macros v2.5.0
[INFO] [stderr]    Compiling sweet_macros v0.0.7
[INFO] [stderr]    Compiling tokio v1.47.1
[INFO] [stderr]    Compiling matchers v0.2.0
[INFO] [stderr]    Compiling futures-util v0.3.31
[INFO] [stderr]    Compiling regex v1.11.3
[INFO] [stderr]    Compiling tracing-subscriber v0.3.20
[INFO] [stderr]    Compiling thiserror v1.0.69
[INFO] [stderr]    Compiling env_logger v0.7.1
[INFO] [stderr]    Compiling pretty_env_logger v0.4.0
[INFO] [stderr]    Compiling clap v4.5.48
[INFO] [stderr]    Compiling bytemuck v1.23.2
[INFO] [stderr]    Compiling derive_more v2.0.1
[INFO] [stderr]    Compiling glam v0.30.8
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling bitflags v2.9.4
[INFO] [stderr]    Compiling ron v0.8.1
[INFO] [stderr]    Compiling bevy_platform v0.17.1
[INFO] [stderr]    Compiling crossterm v0.28.1
[INFO] [stderr]    Compiling bevy_utils v0.17.1
[INFO] [stderr]    Compiling bevy_tasks v0.17.1
[INFO] [stderr]    Compiling ctrlc v3.5.0
[INFO] [stderr]    Compiling futures-executor v0.3.31
[INFO] [stderr]    Compiling futures v0.3.31
[INFO] [stderr]    Compiling bevy_reflect v0.17.1
[INFO] [stderr]    Compiling bevy_ecs v0.17.1
[INFO] [stderr]    Compiling bevy_math v0.17.1
[INFO] [stderr]    Compiling bevy_color v0.17.1
[INFO] [stderr]    Compiling bevy_app v0.17.1
[INFO] [stderr]    Compiling bevy_time v0.17.1
[INFO] [stderr]    Compiling bevy_log v0.17.1
[INFO] [stderr]    Compiling bevy_input v0.17.1
[INFO] [stderr]    Compiling bevy_transform v0.17.1
[INFO] [stderr]    Compiling bevy_diagnostic v0.17.1
[INFO] [stderr]    Compiling bevy_internal v0.17.1
[INFO] [stderr]    Compiling bevy v0.17.1
[INFO] [stderr]    Compiling beet_utils v0.0.7
[INFO] [stderr]    Compiling sweet v0.4.2 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:9:2
[INFO] [stdout]   |
[INFO] [stdout] 9 |     feature(fn_traits, backtrace_frames, unboxed_closures, test)
[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 `sweet` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "b3d019c3ff38dd73a1063266f963b438fe7957bbc32e1f62ab7d33bb74db810e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b3d019c3ff38dd73a1063266f963b438fe7957bbc32e1f62ab7d33bb74db810e", kill_on_drop: false }`
[INFO] [stdout] b3d019c3ff38dd73a1063266f963b438fe7957bbc32e1f62ab7d33bb74db810e
