[INFO] fetching crate rawdio 0.14.0...
[INFO] testing rawdio-0.14.0 against 1.91.0 for beta-1.92-2
[INFO] extracting crate rawdio 0.14.0 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate rawdio 0.14.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate rawdio 0.14.0
[INFO] tweaked toml for crates.io crate rawdio 0.14.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate rawdio 0.14.0 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 rawdio 0.14.0 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]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serde_derive v1.0.216
[INFO] [stderr]   Downloaded atomic_float v1.1.0
[INFO] [stderr]   Downloaded serde v1.0.216
[INFO] [stderr]   Downloaded syn v2.0.90
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 2c5a9fcd35c21d53ff64ddd9f525ee2c4fc36bf608d653591e2578a6355c76c9
[INFO] running `Command { std: "docker" "start" "-a" "2c5a9fcd35c21d53ff64ddd9f525ee2c4fc36bf608d653591e2578a6355c76c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2c5a9fcd35c21d53ff64ddd9f525ee2c4fc36bf608d653591e2578a6355c76c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2c5a9fcd35c21d53ff64ddd9f525ee2c4fc36bf608d653591e2578a6355c76c9", kill_on_drop: false }`
[INFO] [stdout] 2c5a9fcd35c21d53ff64ddd9f525ee2c4fc36bf608d653591e2578a6355c76c9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] c527dc6d95fa512df7ebda067fd3acbecd72a01bbc3a066a0e383759649f90c4
[INFO] running `Command { std: "docker" "start" "-a" "c527dc6d95fa512df7ebda067fd3acbecd72a01bbc3a066a0e383759649f90c4", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.92
[INFO] [stderr]    Compiling unicode-ident v1.0.14
[INFO] [stderr]    Compiling crossbeam-utils v0.8.21
[INFO] [stderr]    Compiling libc v0.2.169
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling typenum v1.17.0
[INFO] [stderr]    Compiling az v1.2.1
[INFO] [stderr]    Compiling rustfft v6.2.0
[INFO] [stderr]    Compiling fixed v1.28.0
[INFO] [stderr]    Compiling strength_reduce v0.2.4
[INFO] [stderr]    Compiling half v2.4.1
[INFO] [stderr]    Compiling bytemuck v1.21.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.18
[INFO] [stderr]    Compiling crossbeam-channel v0.5.14
[INFO] [stderr]    Compiling crossbeam-queue v0.3.12
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]    Compiling getrandom v0.2.15
[INFO] [stderr]    Compiling crossbeam-deque v0.8.6
[INFO] [stderr]    Compiling syn v2.0.90
[INFO] [stderr]    Compiling num-integer v0.1.46
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling num-complex v0.4.6
[INFO] [stderr]    Compiling either v1.13.0
[INFO] [stderr]    Compiling crossbeam v0.8.4
[INFO] [stderr]    Compiling approx v0.5.1
[INFO] [stderr]    Compiling atomic_float v1.1.0
[INFO] [stderr]    Compiling itertools v0.13.0
[INFO] [stderr]    Compiling primal-check v0.3.4
[INFO] [stderr]    Compiling transpose v0.2.3
[INFO] [stderr]    Compiling zerocopy-derive v0.7.35
[INFO] [stderr]    Compiling zerocopy v0.7.35
[INFO] [stderr]    Compiling ppv-lite86 v0.2.20
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling rawdio v0.14.0 (/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(portable_simd)]
[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 `rawdio` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "c527dc6d95fa512df7ebda067fd3acbecd72a01bbc3a066a0e383759649f90c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c527dc6d95fa512df7ebda067fd3acbecd72a01bbc3a066a0e383759649f90c4", kill_on_drop: false }`
[INFO] [stdout] c527dc6d95fa512df7ebda067fd3acbecd72a01bbc3a066a0e383759649f90c4