[INFO] fetching crate ffsvm 0.9.1...
[INFO] documenting ffsvm-0.9.1 against 1.75.0 for beta-1.76-rustdoc-1
[INFO] extracting crate ffsvm 0.9.1 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate ffsvm 0.9.1 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 ffsvm 0.9.1
[INFO] finished tweaking crates.io crate ffsvm 0.9.1
[INFO] tweaked toml for crates.io crate ffsvm 0.9.1 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate crates.io crate ffsvm 0.9.1 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" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded simd_aligned v0.4.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 3c7e4851988514922e106144b5250ea0d85602606b2941af56d2c5a700240c52
[INFO] running `Command { std: "docker" "start" "-a" "3c7e4851988514922e106144b5250ea0d85602606b2941af56d2c5a700240c52", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3c7e4851988514922e106144b5250ea0d85602606b2941af56d2c5a700240c52", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3c7e4851988514922e106144b5250ea0d85602606b2941af56d2c5a700240c52", kill_on_drop: false }`
[INFO] [stdout] 3c7e4851988514922e106144b5250ea0d85602606b2941af56d2c5a700240c52
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a0725962fdb7e10926c4a4fed00774aedb025960e72e18c274b4a2be5b95c7ae
[INFO] running `Command { std: "docker" "start" "-a" "a0725962fdb7e10926c4a4fed00774aedb025960e72e18c274b4a2be5b95c7ae", kill_on_drop: false }`
[INFO] [stderr]     Checking simd_aligned v0.4.0
[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/simd_aligned-0.4.0/src/lib.rs:80:12
[INFO] [stdout]    |
[INFO] [stdout] 80 | #![feature(portable_simd)]
[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 `simd_aligned` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "a0725962fdb7e10926c4a4fed00774aedb025960e72e18c274b4a2be5b95c7ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a0725962fdb7e10926c4a4fed00774aedb025960e72e18c274b4a2be5b95c7ae", kill_on_drop: false }`
[INFO] [stdout] a0725962fdb7e10926c4a4fed00774aedb025960e72e18c274b4a2be5b95c7ae
