[INFO] fetching crate value-box 2.3.3...
[INFO] testing value-box-2.3.3 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate value-box 2.3.3 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate value-box 2.3.3
[INFO] finished tweaking crates.io crate value-box 2.3.3
[INFO] tweaked toml for crates.io crate value-box 2.3.3 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate value-box 2.3.3 on toolchain beta-2025-09-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 32 packages to latest compatible versions
[INFO] [stderr]       Adding phlow v1.7.1 (available: v2.0.1)
[INFO] [stderr]       Adding phlow-extensions v1.6.0 (available: v2.0.0)
[INFO] [stderr]       Adding thiserror v1.0.69 (available: v2.0.17)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f365760ff31ae4a3d4ffd75baaa046faf11d387a8d0c3b8a6eb05180d88283a4
[INFO] running `Command { std: "docker" "start" "-a" "f365760ff31ae4a3d4ffd75baaa046faf11d387a8d0c3b8a6eb05180d88283a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f365760ff31ae4a3d4ffd75baaa046faf11d387a8d0c3b8a6eb05180d88283a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f365760ff31ae4a3d4ffd75baaa046faf11d387a8d0c3b8a6eb05180d88283a4", kill_on_drop: false }`
[INFO] [stdout] f365760ff31ae4a3d4ffd75baaa046faf11d387a8d0c3b8a6eb05180d88283a4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2f24c11e54fb273d7e1f6fefeccfd7b391f2f5f6b7f44e8fcea1431d26738705
[INFO] running `Command { std: "docker" "start" "-a" "2f24c11e54fb273d7e1f6fefeccfd7b391f2f5f6b7f44e8fcea1431d26738705", kill_on_drop: false }`
[INFO] [stderr]    Compiling user-error v1.2.8
[INFO] [stderr]    Compiling value-box v2.3.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.44s
[INFO] running `Command { std: "docker" "inspect" "2f24c11e54fb273d7e1f6fefeccfd7b391f2f5f6b7f44e8fcea1431d26738705", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2f24c11e54fb273d7e1f6fefeccfd7b391f2f5f6b7f44e8fcea1431d26738705", kill_on_drop: false }`
[INFO] [stdout] 2f24c11e54fb273d7e1f6fefeccfd7b391f2f5f6b7f44e8fcea1431d26738705
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b42ef24948212f68c043bde31f0bf5a42e0eec62744dcc826d7de20d8e1369be
[INFO] running `Command { std: "docker" "start" "-a" "b42ef24948212f68c043bde31f0bf5a42e0eec62744dcc826d7de20d8e1369be", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-format v0.3.4
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]    Compiling phlow-derive v1.4.0
[INFO] [stderr]    Compiling phlow v1.7.1
[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/phlow-1.7.1/src/lib.rs:4:35
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![cfg_attr(feature = "printing", feature(specialization))]
[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 `phlow` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "b42ef24948212f68c043bde31f0bf5a42e0eec62744dcc826d7de20d8e1369be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b42ef24948212f68c043bde31f0bf5a42e0eec62744dcc826d7de20d8e1369be", kill_on_drop: false }`
[INFO] [stdout] b42ef24948212f68c043bde31f0bf5a42e0eec62744dcc826d7de20d8e1369be