[INFO] fetching crate tracing-chrometrace 0.1.19...
[INFO] testing tracing-chrometrace-0.1.19 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate tracing-chrometrace 0.1.19 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate tracing-chrometrace 0.1.19
[INFO] finished tweaking crates.io crate tracing-chrometrace 0.1.19
[INFO] tweaked toml for crates.io crate tracing-chrometrace 0.1.19 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate tracing-chrometrace 0.1.19 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 151 packages to latest compatible versions
[INFO] [stderr]       Adding criterion v0.3.6 (available: v0.7.0)
[INFO] [stderr]       Adding derive_builder v0.11.2 (available: v0.20.2)
[INFO] [stderr]       Adding itertools v0.10.5 (available: v0.14.0)
[INFO] [stderr]       Adding strum v0.22.0 (available: v0.27.2)
[INFO] [stderr]       Adding strum_macros v0.22.0 (available: v0.27.2)
[INFO] [stderr]       Adding tracing-chrome v0.5.0 (available: v0.7.2)
[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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] c49e9013488ff954a5c59edb37cc52cf9a493bbdf8018d3487a1c5a8d072184e
[INFO] running `Command { std: "docker" "start" "-a" "c49e9013488ff954a5c59edb37cc52cf9a493bbdf8018d3487a1c5a8d072184e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c49e9013488ff954a5c59edb37cc52cf9a493bbdf8018d3487a1c5a8d072184e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c49e9013488ff954a5c59edb37cc52cf9a493bbdf8018d3487a1c5a8d072184e", kill_on_drop: false }`
[INFO] [stdout] c49e9013488ff954a5c59edb37cc52cf9a493bbdf8018d3487a1c5a8d072184e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] d42d0299a9b1f6aa0b2309930c5c51c0ae5b7f92cfa058e9dc1aff9ca0d63b38
[INFO] running `Command { std: "docker" "start" "-a" "d42d0299a9b1f6aa0b2309930c5c51c0ae5b7f92cfa058e9dc1aff9ca0d63b38", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling regex-automata v0.4.11
[INFO] [stderr]    Compiling tracing-log v0.2.0
[INFO] [stderr]    Compiling matchers v0.2.0
[INFO] [stderr]    Compiling tracing-attributes v0.1.30
[INFO] [stderr]    Compiling tokio-macros v2.5.0
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling darling_core v0.14.4
[INFO] [stderr]    Compiling tokio v1.47.1
[INFO] [stderr]    Compiling strum_macros v0.22.0
[INFO] [stderr]    Compiling derivative v2.2.0
[INFO] [stderr]    Compiling tracing v0.1.41
[INFO] [stderr]    Compiling tracing-subscriber v0.3.20
[INFO] [stderr]    Compiling strum v0.22.0
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling darling_macro v0.14.4
[INFO] [stderr]    Compiling darling v0.14.4
[INFO] [stderr]    Compiling derive_builder_core v0.11.2
[INFO] [stderr]    Compiling derive_builder_macro v0.11.2
[INFO] [stderr]    Compiling derive_builder v0.11.2
[INFO] [stderr]    Compiling tracing-chrometrace v0.1.19 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/lib.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | #![feature(thread_id_value)]
[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 `tracing-chrometrace` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "d42d0299a9b1f6aa0b2309930c5c51c0ae5b7f92cfa058e9dc1aff9ca0d63b38", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d42d0299a9b1f6aa0b2309930c5c51c0ae5b7f92cfa058e9dc1aff9ca0d63b38", kill_on_drop: false }`
[INFO] [stdout] d42d0299a9b1f6aa0b2309930c5c51c0ae5b7f92cfa058e9dc1aff9ca0d63b38