[INFO] fetching crate photonic-output-null 0.1.1...
[INFO] testing photonic-output-null-0.1.1 against 1.99.0-beta.8+cargoflags=--release for beta-release-1.100-2
[INFO] extracting crate photonic-output-null 0.1.1 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate photonic-output-null 0.1.1
[INFO] finished tweaking crates.io crate photonic-output-null 0.1.1
[INFO] tweaked toml for crates.io crate photonic-output-null 0.1.1 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate photonic-output-null 0.1.1 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 photonic-output-null 0.1.1 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]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded photonic-dynamic v0.1.1
[INFO] [stderr]   Downloaded photonic v0.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 634cdf94b4316da680976a6c6672dd6b6fcab87837a19680b603bcd8630b6b1a
[INFO] running `Command { std: "docker" "start" "634cdf94b4316da680976a6c6672dd6b6fcab87837a19680b603bcd8630b6b1a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "634cdf94b4316da680976a6c6672dd6b6fcab87837a19680b603bcd8630b6b1a", 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" "634cdf94b4316da680976a6c6672dd6b6fcab87837a19680b603bcd8630b6b1a" "/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" "634cdf94b4316da680976a6c6672dd6b6fcab87837a19680b603bcd8630b6b1a", 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" "634cdf94b4316da680976a6c6672dd6b6fcab87837a19680b603bcd8630b6b1a" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "build" "--frozen" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling libc v0.2.176
[INFO] [stderr]    Compiling siphasher v1.0.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling phf_shared v0.11.3
[INFO] [stderr]    Compiling palette v0.7.6
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling fast-srgb8 v1.0.0
[INFO] [stderr]    Compiling approx v0.5.1
[INFO] [stderr]    Compiling phf_generator v0.11.3
[INFO] [stderr]    Compiling getrandom v0.3.3
[INFO] [stderr]    Compiling rand_core v0.9.3
[INFO] [stderr]    Compiling rand_chacha v0.9.0
[INFO] [stderr]    Compiling rand v0.9.2
[INFO] [stderr]    Compiling futures-macro v0.3.31
[INFO] [stderr]    Compiling tokio-macros v2.5.0
[INFO] [stderr]    Compiling phf_macros v0.11.3
[INFO] [stderr]    Compiling palette_derive v0.7.6
[INFO] [stderr]    Compiling phf v0.11.3
[INFO] [stderr]    Compiling tokio v1.47.1
[INFO] [stderr]    Compiling futures-util v0.3.31
[INFO] [stderr]    Compiling tokio-util v0.7.16
[INFO] [stderr]    Compiling tokio-stream v0.1.17
[INFO] [stderr]    Compiling futures-executor v0.3.31
[INFO] [stderr]    Compiling futures v0.3.31
[INFO] [stderr]    Compiling photonic v0.1.1
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/photonic-0.1.1/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(unsize)]
[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 `photonic` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "634cdf94b4316da680976a6c6672dd6b6fcab87837a19680b603bcd8630b6b1a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "634cdf94b4316da680976a6c6672dd6b6fcab87837a19680b603bcd8630b6b1a", kill_on_drop: false }`
[INFO] [stdout] 634cdf94b4316da680976a6c6672dd6b6fcab87837a19680b603bcd8630b6b1a
