[INFO] fetching crate flat-knn 0.1.0...
[INFO] testing flat-knn-0.1.0 against 1.100.0-beta.1+cargoflags=--release for beta-release-1.100-2
[INFO] extracting crate flat-knn 0.1.0 into /workspace/builds/worker-0-tc2/source
[INFO] removed /workspace/builds/worker-0-tc2/source/rust-toolchain.toml
[INFO] started tweaking crates.io crate flat-knn 0.1.0
[INFO] finished tweaking crates.io crate flat-knn 0.1.0
[INFO] tweaked toml for crates.io crate flat-knn 0.1.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate flat-knn 0.1.0 on toolchain 1.100.0-beta.1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.100.0-beta.1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate flat-knn 0.1.0 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" "+1.100.0-beta.1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 19106adf25580e0ac1e1e620968104f28927f6661dc980d642324694e958c11f
[INFO] running `Command { std: "docker" "start" "19106adf25580e0ac1e1e620968104f28927f6661dc980d642324694e958c11f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "19106adf25580e0ac1e1e620968104f28927f6661dc980d642324694e958c11f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "19106adf25580e0ac1e1e620968104f28927f6661dc980d642324694e958c11f" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "19106adf25580e0ac1e1e620968104f28927f6661dc980d642324694e958c11f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "19106adf25580e0ac1e1e620968104f28927f6661dc980d642324694e958c11f" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "build" "--frozen" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.174
[INFO] [stderr]    Compiling zerocopy v0.8.26
[INFO] [stderr]    Compiling getrandom v0.3.3
[INFO] [stderr]    Compiling cc v1.2.31
[INFO] [stderr]    Compiling syn v2.0.104
[INFO] [stderr]    Compiling either v1.15.0
[INFO] [stderr]    Compiling ordered-float v4.6.0
[INFO] [stderr]    Compiling rayon v1.10.0
[INFO] [stderr]    Compiling rand_core v0.9.3
[INFO] [stderr]    Compiling simsimd v6.5.0
[INFO] [stderr]    Compiling zerocopy-derive v0.8.26
[INFO] [stderr]    Compiling ppv-lite86 v0.2.21
[INFO] [stderr]    Compiling half v2.7.1
[INFO] [stderr]    Compiling rand_chacha v0.9.0
[INFO] [stderr]    Compiling rand v0.9.2
[INFO] [stderr]    Compiling flat-knn v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(binary_heap_into_iter_sorted)]
[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 `flat-knn` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "19106adf25580e0ac1e1e620968104f28927f6661dc980d642324694e958c11f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "19106adf25580e0ac1e1e620968104f28927f6661dc980d642324694e958c11f", kill_on_drop: false }`
[INFO] [stdout] 19106adf25580e0ac1e1e620968104f28927f6661dc980d642324694e958c11f
