[INFO] fetching crate z-stackr-core 1.0.1...
[INFO] testing z-stackr-core-1.0.1 against 1.99.0-beta.8 for beta-1.100-2
[INFO] extracting crate z-stackr-core 1.0.1 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate z-stackr-core 1.0.1
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate z-stackr-core 1.0.1
[INFO] tweaked toml for crates.io crate z-stackr-core 1.0.1 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate z-stackr-core 1.0.1 on toolchain 1.99.0-beta.8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate z-stackr-core 1.0.1 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" "+1.99.0-beta.8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded naga-types v30.0.0
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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@sha256:3111399a4047eeb3a02b7a90e478d715f38a8c6669b5c4b49d30a17385265909" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] d2568a4afa853c884e028fbc31d5e5f98e7308f276d0a0533d0ece4a4a6f058a
[INFO] running `Command { std: "docker" "start" "d2568a4afa853c884e028fbc31d5e5f98e7308f276d0a0533d0ece4a4a6f058a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d2568a4afa853c884e028fbc31d5e5f98e7308f276d0a0533d0ece4a4a6f058a", 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" "d2568a4afa853c884e028fbc31d5e5f98e7308f276d0a0533d0ece4a4a6f058a" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d2568a4afa853c884e028fbc31d5e5f98e7308f276d0a0533d0ece4a4a6f058a", 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" "d2568a4afa853c884e028fbc31d5e5f98e7308f276d0a0533d0ece4a4a6f058a" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.8.22
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[INFO] [stderr]    Compiling num-derive v0.4.2
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[INFO] [stderr]    Compiling serde_derive v1.0.228
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[INFO] [stderr]    Compiling aligned-vec v0.6.4
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[INFO] [stderr]    Compiling thiserror v2.0.18
[INFO] [stderr]    Compiling av1-grain v0.2.5
[INFO] [stderr]    Compiling tracing v0.1.44
[INFO] [stderr]    Compiling tracing-subscriber v0.3.23
[INFO] [stderr]    Compiling polling v3.11.0
[INFO] [stderr]    Compiling async-signal v0.2.14
[INFO] [stderr]    Compiling async-net v2.0.0
[INFO] [stderr]    Compiling async-process v2.5.0
[INFO] [stderr]    Compiling smol v2.0.2
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling half v2.7.1
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[INFO] [stderr]    Compiling exr v1.74.0
[INFO] [stderr]    Compiling ravif v0.13.0
[INFO] [stderr]    Compiling image v0.25.10
[INFO] [stderr]    Compiling z-stackr-core v1.0.1 (/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(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 `z-stackr-core` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "d2568a4afa853c884e028fbc31d5e5f98e7308f276d0a0533d0ece4a4a6f058a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d2568a4afa853c884e028fbc31d5e5f98e7308f276d0a0533d0ece4a4a6f058a", kill_on_drop: false }`
[INFO] [stdout] d2568a4afa853c884e028fbc31d5e5f98e7308f276d0a0533d0ece4a4a6f058a
