[INFO] fetching crate nwn-lib-rs 0.4.0...
[INFO] testing nwn-lib-rs-0.4.0 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate nwn-lib-rs 0.4.0 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate nwn-lib-rs 0.4.0
[INFO] finished tweaking crates.io crate nwn-lib-rs 0.4.0
[INFO] tweaked toml for crates.io crate nwn-lib-rs 0.4.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate nwn-lib-rs 0.4.0 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 nwn-lib-rs 0.4.0 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-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e96e7bc0ea9af4a955c9bc05280afc8fd29a498367c4a3f72ef20caed0794073
[INFO] running `Command { std: "docker" "start" "-a" "e96e7bc0ea9af4a955c9bc05280afc8fd29a498367c4a3f72ef20caed0794073", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e96e7bc0ea9af4a955c9bc05280afc8fd29a498367c4a3f72ef20caed0794073", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e96e7bc0ea9af4a955c9bc05280afc8fd29a498367c4a3f72ef20caed0794073", kill_on_drop: false }`
[INFO] [stdout] e96e7bc0ea9af4a955c9bc05280afc8fd29a498367c4a3f72ef20caed0794073
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b03fb472fa2f259440d8972d20dd29f37c382d0dc2982cd523fb1b745102b422
[INFO] running `Command { std: "docker" "start" "-a" "b03fb472fa2f259440d8972d20dd29f37c382d0dc2982cd523fb1b745102b422", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.93
[INFO] [stderr]    Compiling unicode-ident v1.0.16
[INFO] [stderr]    Compiling libc v0.2.169
[INFO] [stderr]    Compiling serde v1.0.217
[INFO] [stderr]    Compiling iana-time-zone v0.1.61
[INFO] [stderr]    Compiling memchr v2.7.4
[INFO] [stderr]    Compiling xml-rs v0.8.25
[INFO] [stderr]    Compiling base64ct v1.6.0
[INFO] [stderr]    Compiling cc v1.2.14
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling encoding_rs v0.8.35
[INFO] [stderr]    Compiling nom v7.1.3
[INFO] [stderr]    Compiling quote v1.0.38
[INFO] [stderr]    Compiling cmake v0.1.54
[INFO] [stderr]    Compiling chrono v0.4.39
[INFO] [stderr]    Compiling syn v2.0.98
[INFO] [stderr]    Compiling libz-ng-sys v1.1.21
[INFO] [stderr]    Compiling serde_derive v1.0.217
[INFO] [stderr]    Compiling git-version-macro v0.3.9
[INFO] [stderr]    Compiling git-version v0.3.9
[INFO] [stderr]    Compiling flate2 v1.0.35
[INFO] [stderr]    Compiling nwn-lib-rs v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:7:1
[INFO] [stdout]   |
[INFO] [stdout] 7 | #![feature(generic_const_exprs, coverage_attribute, 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 `nwn-lib-rs` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "b03fb472fa2f259440d8972d20dd29f37c382d0dc2982cd523fb1b745102b422", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b03fb472fa2f259440d8972d20dd29f37c382d0dc2982cd523fb1b745102b422", kill_on_drop: false }`
[INFO] [stdout] b03fb472fa2f259440d8972d20dd29f37c382d0dc2982cd523fb1b745102b422