[INFO] fetching crate pywavers 0.1.1...
[INFO] testing pywavers-0.1.1 against 1.75.0 for beta-1.76-1
[INFO] extracting crate pywavers 0.1.1 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate pywavers 0.1.1 on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate pywavers 0.1.1
[INFO] finished tweaking crates.io crate pywavers 0.1.1
[INFO] tweaked toml for crates.io crate pywavers 0.1.1 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pyo3-macros v0.18.3
[INFO] [stderr]   Downloaded pyo3-build-config v0.18.3
[INFO] [stderr]   Downloaded pyo3-macros-backend v0.18.3
[INFO] [stderr]   Downloaded numpy v0.18.0
[INFO] [stderr]   Downloaded pyo3-ffi v0.18.3
[INFO] [stderr]   Downloaded pyo3 v0.18.3
[INFO] [stderr]   Downloaded wavers v0.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7c19dd36e48c68cba2526f1f03507daa453876874e037ce878ff27dc9a06e892
[INFO] running `Command { std: "docker" "start" "-a" "7c19dd36e48c68cba2526f1f03507daa453876874e037ce878ff27dc9a06e892", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7c19dd36e48c68cba2526f1f03507daa453876874e037ce878ff27dc9a06e892", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7c19dd36e48c68cba2526f1f03507daa453876874e037ce878ff27dc9a06e892", kill_on_drop: false }`
[INFO] [stdout] 7c19dd36e48c68cba2526f1f03507daa453876874e037ce878ff27dc9a06e892
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 438f3c4095a61a73222e7878e51ac2b209e1a833c467bbff3bcb243d142766b3
[INFO] running `Command { std: "docker" "start" "-a" "438f3c4095a61a73222e7878e51ac2b209e1a833c467bbff3bcb243d142766b3", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.75
[INFO] [stderr]    Compiling once_cell v1.19.0
[INFO] [stderr]    Compiling num-traits v0.2.17
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling memoffset v0.8.0
[INFO] [stderr]    Compiling matrixmultiply v0.3.8
[INFO] [stderr]    Compiling pyo3-build-config v0.18.3
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling pyo3-ffi v0.18.3
[INFO] [stderr]    Compiling pyo3 v0.18.3
[INFO] [stderr]    Compiling num-complex v0.4.4
[INFO] [stderr]    Compiling ndarray v0.15.6
[INFO] [stderr]    Compiling pyo3-macros-backend v0.18.3
[INFO] [stderr]    Compiling pyo3-macros v0.18.3
[INFO] [stderr]    Compiling numpy v0.18.0
[INFO] [stderr]    Compiling wavers v0.1.1
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/wavers-0.1.1/src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(slice_as_chunks)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `wavers` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "438f3c4095a61a73222e7878e51ac2b209e1a833c467bbff3bcb243d142766b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "438f3c4095a61a73222e7878e51ac2b209e1a833c467bbff3bcb243d142766b3", kill_on_drop: false }`
[INFO] [stdout] 438f3c4095a61a73222e7878e51ac2b209e1a833c467bbff3bcb243d142766b3
