[INFO] fetching crate polished_serial_logging 0.1.2...
[INFO] testing polished_serial_logging-0.1.2 against beta-2025-10-28 for beta-1.92-2
[INFO] extracting crate polished_serial_logging 0.1.2 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate polished_serial_logging 0.1.2
[INFO] finished tweaking crates.io crate polished_serial_logging 0.1.2
[INFO] tweaked toml for crates.io crate polished_serial_logging 0.1.2 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate polished_serial_logging 0.1.2 on toolchain beta-2025-10-28
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate polished_serial_logging 0.1.2 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" "+beta-2025-10-28" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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" "+beta-2025-10-28" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3f0a97649cdc053f85a9fb962fa2dd9d0c105c5da8605a7d2e7499824c69b233
[INFO] running `Command { std: "docker" "start" "-a" "3f0a97649cdc053f85a9fb962fa2dd9d0c105c5da8605a7d2e7499824c69b233", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3f0a97649cdc053f85a9fb962fa2dd9d0c105c5da8605a7d2e7499824c69b233", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3f0a97649cdc053f85a9fb962fa2dd9d0c105c5da8605a7d2e7499824c69b233", kill_on_drop: false }`
[INFO] [stdout] 3f0a97649cdc053f85a9fb962fa2dd9d0c105c5da8605a7d2e7499824c69b233
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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" "+beta-2025-10-28" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f30123d039ef46becffb7f2d3045fb8ce48f9145eed5459a47621ac96b199a30
[INFO] running `Command { std: "docker" "start" "-a" "f30123d039ef46becffb7f2d3045fb8ce48f9145eed5459a47621ac96b199a30", kill_on_drop: false }`
[INFO] [stderr]    Compiling lock_api v0.4.13
[INFO] [stderr]    Compiling bit_field v0.10.2
[INFO] [stderr]    Compiling x86 v0.52.0
[INFO] [stderr]    Compiling bitflags v2.9.1
[INFO] [stderr]    Compiling volatile v0.4.6
[INFO] [stderr]    Compiling raw-cpuid v10.7.0
[INFO] [stderr]    Compiling lazy_static v1.5.0
[INFO] [stderr]    Compiling x86_64 v0.15.2
[INFO] [stderr]    Compiling spin v0.10.0
[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/x86_64-0.15.2/src/lib.rs:5:44
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![cfg_attr(feature = "abi_x86_interrupt", feature(abi_x86_interrupt))]
[INFO] [stdout]   |                                            ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[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/x86_64-0.15.2/src/lib.rs:6:37
[INFO] [stdout]   |
[INFO] [stdout] 6 | #![cfg_attr(feature = "step_trait", feature(step_trait))]
[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 `x86_64` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "f30123d039ef46becffb7f2d3045fb8ce48f9145eed5459a47621ac96b199a30", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f30123d039ef46becffb7f2d3045fb8ce48f9145eed5459a47621ac96b199a30", kill_on_drop: false }`
[INFO] [stdout] f30123d039ef46becffb7f2d3045fb8ce48f9145eed5459a47621ac96b199a30
