[INFO] fetching crate numrst 0.5.0...
[INFO] testing numrst-0.5.0 against 1.91.0 for beta-1.92-2
[INFO] extracting crate numrst 0.5.0 into /workspace/builds/worker-0-tc1/source
[INFO] started tweaking crates.io crate numrst 0.5.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate numrst 0.5.0
[INFO] tweaked toml for crates.io crate numrst 0.5.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate numrst 0.5.0 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 numrst 0.5.0 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" "+1.91.0" "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]  Downloading crates ...
[INFO] [stderr]   Downloaded liblzma v0.4.4
[INFO] [stderr]   Downloaded ppmd-rust v1.2.1
[INFO] [stderr]   Downloaded zip v4.5.0
[INFO] [stderr]   Downloaded liblzma-sys v0.4.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 25a9cd093dd5c0890ad59f8db2f681d24b8a058a927bd54deb07315fadadfedf
[INFO] running `Command { std: "docker" "start" "-a" "25a9cd093dd5c0890ad59f8db2f681d24b8a058a927bd54deb07315fadadfedf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "25a9cd093dd5c0890ad59f8db2f681d24b8a058a927bd54deb07315fadadfedf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "25a9cd093dd5c0890ad59f8db2f681d24b8a058a927bd54deb07315fadadfedf", kill_on_drop: false }`
[INFO] [stdout] 25a9cd093dd5c0890ad59f8db2f681d24b8a058a927bd54deb07315fadadfedf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 50063ed98f5e5dd05491c66c31bb594bbdba9e02494bc5a15890c4ca6cb80726
[INFO] running `Command { std: "docker" "start" "-a" "50063ed98f5e5dd05491c66c31bb594bbdba9e02494bc5a15890c4ca6cb80726", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.175
[INFO] [stderr]    Compiling cfg-if v1.0.3
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling libz-rs-sys v0.5.1
[INFO] [stderr]    Compiling rustix v1.0.8
[INFO] [stderr]    Compiling thiserror v2.0.16
[INFO] [stderr]    Compiling bitflags v2.9.3
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling libbz2-rs-sys v0.2.2
[INFO] [stderr]    Compiling hashbrown v0.15.5
[INFO] [stderr]    Compiling ppmd-rust v1.2.1
[INFO] [stderr]    Compiling bytemuck v1.23.2
[INFO] [stderr]    Compiling crc32fast v1.5.0
[INFO] [stderr]    Compiling sha1 v0.10.6
[INFO] [stderr]    Compiling aes v0.8.4
[INFO] [stderr]    Compiling zopfli v0.8.2
[INFO] [stderr]    Compiling flate2 v1.1.2
[INFO] [stderr]    Compiling bzip2 v0.6.0
[INFO] [stderr]    Compiling indexmap v2.11.0
[INFO] [stderr]    Compiling approx v0.5.1
[INFO] [stderr]    Compiling jobserver v0.1.34
[INFO] [stderr]    Compiling getrandom v0.3.3
[INFO] [stderr]    Compiling cc v1.2.34
[INFO] [stderr]    Compiling rand_core v0.9.3
[INFO] [stderr]    Compiling rand_chacha v0.9.0
[INFO] [stderr]    Compiling rand v0.9.2
[INFO] [stderr]    Compiling tempfile v3.21.0
[INFO] [stderr]    Compiling rand_distr v0.5.1
[INFO] [stderr]    Compiling zstd-sys v2.0.15+zstd.1.5.7
[INFO] [stderr]    Compiling liblzma-sys v0.4.4
[INFO] [stderr]    Compiling liblzma v0.4.4
[INFO] [stderr]    Compiling darling_core v0.20.11
[INFO] [stderr]    Compiling zeroize_derive v1.4.2
[INFO] [stderr]    Compiling thiserror-impl v2.0.16
[INFO] [stderr]    Compiling zeroize v1.8.1
[INFO] [stderr]    Compiling zstd-safe v7.2.4
[INFO] [stderr]    Compiling darling_macro v0.20.11
[INFO] [stderr]    Compiling zstd v0.13.3
[INFO] [stderr]    Compiling zip v4.5.0
[INFO] [stderr]    Compiling darling v0.20.11
[INFO] [stderr]    Compiling derive_builder_core v0.20.2
[INFO] [stderr]    Compiling derive_builder_macro v0.20.2
[INFO] [stderr]    Compiling derive_builder v0.20.2
[INFO] [stderr]    Compiling numrst v0.5.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(mapped_lock_guards)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]    --> src/core/ndarray/reduce.rs:198:22
[INFO] [stdout]     |
[INFO] [stdout] 198 |             .map(|v| (v.to_f64()- mean))
[INFO] [stdout]     |                      ^                ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 198 -             .map(|v| (v.to_f64()- mean))
[INFO] [stdout] 198 +             .map(|v| v.to_f64()- mean)
[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 `numrst` (lib) due to 1 previous error; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "50063ed98f5e5dd05491c66c31bb594bbdba9e02494bc5a15890c4ca6cb80726", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "50063ed98f5e5dd05491c66c31bb594bbdba9e02494bc5a15890c4ca6cb80726", kill_on_drop: false }`
[INFO] [stdout] 50063ed98f5e5dd05491c66c31bb594bbdba9e02494bc5a15890c4ca6cb80726
