[INFO] fetching crate pi_slot_deque 0.3.1...
[INFO] testing pi_slot_deque-0.3.1 against beta-2025-10-28 for beta-1.92-2
[INFO] extracting crate pi_slot_deque 0.3.1 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate pi_slot_deque 0.3.1
[INFO] finished tweaking crates.io crate pi_slot_deque 0.3.1
[INFO] tweaked toml for crates.io crate pi_slot_deque 0.3.1 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate pi_slot_deque 0.3.1 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 pi_slot_deque 0.3.1 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" "+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] 29bb3e762f57ff8b0a90b247e9c9cb5e2e27768c97712639ddf6a2b4670171cd
[INFO] running `Command { std: "docker" "start" "-a" "29bb3e762f57ff8b0a90b247e9c9cb5e2e27768c97712639ddf6a2b4670171cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "29bb3e762f57ff8b0a90b247e9c9cb5e2e27768c97712639ddf6a2b4670171cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "29bb3e762f57ff8b0a90b247e9c9cb5e2e27768c97712639ddf6a2b4670171cd", kill_on_drop: false }`
[INFO] [stdout] 29bb3e762f57ff8b0a90b247e9c9cb5e2e27768c97712639ddf6a2b4670171cd
[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] 2fe6fd3ed3b6bd0baff083c906d27663dcf468fce9e5e2d8496b4b660b33a4f8
[INFO] running `Command { std: "docker" "start" "-a" "2fe6fd3ed3b6bd0baff083c906d27663dcf468fce9e5e2d8496b4b660b33a4f8", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.8.21
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling pi_null v0.1.11
[INFO] [stderr]    Compiling pi_slotmap v0.2.1
[INFO] [stderr]    Compiling serde_derive v1.0.219
[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/pi_null-0.1.11/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(strict_provenance)]
[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 `pi_null` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "2fe6fd3ed3b6bd0baff083c906d27663dcf468fce9e5e2d8496b4b660b33a4f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2fe6fd3ed3b6bd0baff083c906d27663dcf468fce9e5e2d8496b4b660b33a4f8", kill_on_drop: false }`
[INFO] [stdout] 2fe6fd3ed3b6bd0baff083c906d27663dcf468fce9e5e2d8496b4b660b33a4f8