[INFO] fetching crate synfx-dsp-jit 0.6.1...
[INFO] testing synfx-dsp-jit-0.6.1 against 1.75.0 for beta-1.76-1
[INFO] extracting crate synfx-dsp-jit 0.6.1 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate synfx-dsp-jit 0.6.1 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 synfx-dsp-jit 0.6.1
[INFO] finished tweaking crates.io crate synfx-dsp-jit 0.6.1
[INFO] tweaked toml for crates.io crate synfx-dsp-jit 0.6.1 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate crates.io crate synfx-dsp-jit 0.6.1 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 cranelift v0.86.1
[INFO] [stderr]   Downloaded cranelift-module v0.86.1
[INFO] [stderr]   Downloaded cranelift-entity v0.86.1
[INFO] [stderr]   Downloaded cranelift-codegen-shared v0.86.1
[INFO] [stderr]   Downloaded slice-group-by v0.3.0
[INFO] [stderr]   Downloaded cranelift-native v0.86.1
[INFO] [stderr]   Downloaded synfx-dsp v0.5.5
[INFO] [stderr]   Downloaded target-lexicon v0.12.5
[INFO] [stderr]   Downloaded region v2.2.0
[INFO] [stderr]   Downloaded cranelift-isle v0.86.1
[INFO] [stderr]   Downloaded cranelift-codegen-meta v0.86.1
[INFO] [stderr]   Downloaded regalloc2 v0.3.2
[INFO] [stderr]   Downloaded cranelift-codegen v0.86.1
[INFO] [stderr]   Downloaded cranelift-frontend v0.86.1
[INFO] [stderr]   Downloaded cranelift-bforest v0.86.1
[INFO] [stderr]   Downloaded cranelift-jit v0.86.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] fb744e869afedadfad96f0b5ddedc54742366918c59d34de17899591cfd1b43a
[INFO] running `Command { std: "docker" "start" "-a" "fb744e869afedadfad96f0b5ddedc54742366918c59d34de17899591cfd1b43a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fb744e869afedadfad96f0b5ddedc54742366918c59d34de17899591cfd1b43a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fb744e869afedadfad96f0b5ddedc54742366918c59d34de17899591cfd1b43a", kill_on_drop: false }`
[INFO] [stdout] fb744e869afedadfad96f0b5ddedc54742366918c59d34de17899591cfd1b43a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 2dd4381d0d11799774f75d1857eb687fb74e67ae4b36f336f6e0166e2290254f
[INFO] running `Command { std: "docker" "start" "-a" "2dd4381d0d11799774f75d1857eb687fb74e67ae4b36f336f6e0166e2290254f", kill_on_drop: false }`
[INFO] [stderr]    Compiling cranelift-isle v0.86.1
[INFO] [stderr]    Compiling indexmap v1.9.1
[INFO] [stderr]    Compiling cranelift-codegen-shared v0.86.1
[INFO] [stderr]    Compiling target-lexicon v0.12.5
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling cranelift-entity v0.86.1
[INFO] [stderr]    Compiling slice-group-by v0.3.0
[INFO] [stderr]    Compiling libc v0.2.137
[INFO] [stderr]    Compiling anyhow v1.0.66
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling cache-padded v1.2.0
[INFO] [stderr]    Compiling cranelift-codegen-meta v0.86.1
[INFO] [stderr]    Compiling ringbuf v0.2.8
[INFO] [stderr]    Compiling fxhash v0.2.1
[INFO] [stderr]    Compiling cranelift-bforest v0.86.1
[INFO] [stderr]    Compiling regalloc2 v0.3.2
[INFO] [stderr]    Compiling gimli v0.26.2
[INFO] [stderr]    Compiling region v2.2.0
[INFO] [stderr]    Compiling synfx-dsp v0.5.5
[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/synfx-dsp-0.5.5/src/lib.rs:228:12
[INFO] [stdout]     |
[INFO] [stdout] 228 | #![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 `synfx-dsp` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "2dd4381d0d11799774f75d1857eb687fb74e67ae4b36f336f6e0166e2290254f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2dd4381d0d11799774f75d1857eb687fb74e67ae4b36f336f6e0166e2290254f", kill_on_drop: false }`
[INFO] [stdout] 2dd4381d0d11799774f75d1857eb687fb74e67ae4b36f336f6e0166e2290254f
