[INFO] fetching crate rmatrix_ks 2.0.2...
[INFO] testing rmatrix_ks-2.0.2 against 1.91.0 for beta-1.92-2
[INFO] extracting crate rmatrix_ks 2.0.2 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate rmatrix_ks 2.0.2
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate rmatrix_ks 2.0.2
[INFO] tweaked toml for crates.io crate rmatrix_ks 2.0.2 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate rmatrix_ks 2.0.2 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 rmatrix_ks 2.0.2 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]  Downloading crates ...
[INFO] [stderr]   Downloaded rand_core v0.9.1
[INFO] [stderr]   Downloaded bytemuck v1.23.1
[INFO] [stderr]   Downloaded zerocopy-derive v0.8.18
[INFO] [stderr]   Downloaded zerocopy v0.8.18
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] ecbc79c06657d5d7c316d5b27d15e415b0ade9f598d5e5bb40d5e0e8b05e5a06
[INFO] running `Command { std: "docker" "start" "-a" "ecbc79c06657d5d7c316d5b27d15e415b0ade9f598d5e5bb40d5e0e8b05e5a06", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ecbc79c06657d5d7c316d5b27d15e415b0ade9f598d5e5bb40d5e0e8b05e5a06", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ecbc79c06657d5d7c316d5b27d15e415b0ade9f598d5e5bb40d5e0e8b05e5a06", kill_on_drop: false }`
[INFO] [stdout] ecbc79c06657d5d7c316d5b27d15e415b0ade9f598d5e5bb40d5e0e8b05e5a06
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 679dcfa80f9af8d990cedd4c8f15dde570acbfb75d32934297032c2a7403ba19
[INFO] running `Command { std: "docker" "start" "-a" "679dcfa80f9af8d990cedd4c8f15dde570acbfb75d32934297032c2a7403ba19", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.155
[INFO] [stderr]    Compiling zerocopy v0.8.18
[INFO] [stderr]    Compiling getrandom v0.3.1
[INFO] [stderr]    Compiling ppv-lite86 v0.2.17
[INFO] [stderr]    Compiling either v1.13.0
[INFO] [stderr]    Compiling regex-automata v0.4.8
[INFO] [stderr]    Compiling rayon v1.10.0
[INFO] [stderr]    Compiling rand_core v0.9.1
[INFO] [stderr]    Compiling rand_chacha v0.9.0
[INFO] [stderr]    Compiling rand v0.9.1
[INFO] [stderr]    Compiling regex v1.11.1
[INFO] [stderr]    Compiling rmatrix_ks v2.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(doc_cfg)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(doc_auto_cfg)]
[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 `rmatrix_ks` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "679dcfa80f9af8d990cedd4c8f15dde570acbfb75d32934297032c2a7403ba19", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "679dcfa80f9af8d990cedd4c8f15dde570acbfb75d32934297032c2a7403ba19", kill_on_drop: false }`
[INFO] [stdout] 679dcfa80f9af8d990cedd4c8f15dde570acbfb75d32934297032c2a7403ba19