[INFO] fetching crate mixtrics 0.2.2...
[INFO] testing mixtrics-0.2.2 against beta-2025-10-28 for beta-1.92-2
[INFO] extracting crate mixtrics 0.2.2 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate mixtrics 0.2.2
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate mixtrics 0.2.2
[INFO] tweaked toml for crates.io crate mixtrics 0.2.2 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate mixtrics 0.2.2 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 mixtrics 0.2.2 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 636787c4f191062cb65982432bfc9a4293c3a9981442e1f94f4bfe1def6ee5bb
[INFO] running `Command { std: "docker" "start" "-a" "636787c4f191062cb65982432bfc9a4293c3a9981442e1f94f4bfe1def6ee5bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "636787c4f191062cb65982432bfc9a4293c3a9981442e1f94f4bfe1def6ee5bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "636787c4f191062cb65982432bfc9a4293c3a9981442e1f94f4bfe1def6ee5bb", kill_on_drop: false }`
[INFO] [stdout] 636787c4f191062cb65982432bfc9a4293c3a9981442e1f94f4bfe1def6ee5bb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 80b1ad430e1b8ed9958ec82bb92cbfcf2938a6273fb8608109ee75f7c3fe5e67
[INFO] running `Command { std: "docker" "start" "-a" "80b1ad430e1b8ed9958ec82bb92cbfcf2938a6273fb8608109ee75f7c3fe5e67", kill_on_drop: false }`
[INFO] [stderr]    Compiling parking_lot_core v0.9.11
[INFO] [stderr]    Compiling parking_lot v0.12.4
[INFO] [stderr]    Compiling mixtrics v0.2.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.08s
[INFO] running `Command { std: "docker" "inspect" "80b1ad430e1b8ed9958ec82bb92cbfcf2938a6273fb8608109ee75f7c3fe5e67", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "80b1ad430e1b8ed9958ec82bb92cbfcf2938a6273fb8608109ee75f7c3fe5e67", kill_on_drop: false }`
[INFO] [stdout] 80b1ad430e1b8ed9958ec82bb92cbfcf2938a6273fb8608109ee75f7c3fe5e67
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 244d19f25bac851bb047e02ecb9625644268d51240ad61b6d6471f2700643188
[INFO] running `Command { std: "docker" "start" "-a" "244d19f25bac851bb047e02ecb9625644268d51240ad61b6d6471f2700643188", kill_on_drop: false }`
[INFO] [stderr]    Compiling getrandom v0.3.3
[INFO] [stderr]    Compiling rustix v1.1.2
[INFO] [stderr]    Compiling bitflags v2.9.4
[INFO] [stderr]    Compiling linux-raw-sys v0.11.0
[INFO] [stderr]    Compiling once_cell v1.21.3
[INFO] [stderr]    Compiling tempfile v3.22.0
[INFO] [stderr]    Compiling mixtrics v0.2.2 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `mixtrics::registry::prometheus_0_14`
[INFO] [stdout]   --> examples/basic.rs:19:15
[INFO] [stdout]    |
[INFO] [stdout] 19 |     registry::prometheus_0_14::PrometheusMetricsRegistry,
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^ could not find `prometheus_0_14` in `registry`
[INFO] [stdout]    |
[INFO] [stdout] note: found an item that was configured out
[INFO] [stdout]   --> /opt/rustwide/workdir/src/registry/mod.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 29 | #[cfg(feature = "prometheus_0_14")]
[INFO] [stdout]    |       --------------------------- the item is gated behind the `prometheus_0_14` feature
[INFO] [stdout] 30 | #[cfg_attr(docsrs, doc(cfg(feature = "prometheus_0_14")))]
[INFO] [stdout] 31 | pub mod prometheus_0_14;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of unresolved module or unlinked crate `prometheus_0_14`
[INFO] [stdout]    --> examples/basic.rs:100:60
[INFO] [stdout]     |
[INFO] [stdout] 100 |     let registry = Box::new(PrometheusMetricsRegistry::new(prometheus_0_14::Registry::new())) as _;
[INFO] [stdout]     |                                                            ^^^^^^^^^^^^^^^ use of unresolved module or unlinked crate `prometheus_0_14`
[INFO] [stdout]     |
[INFO] [stdout]     = help: if you wanted to use a crate named `prometheus_0_14`, use `cargo add prometheus_0_14` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0433.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mixtrics` (example "basic") due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "244d19f25bac851bb047e02ecb9625644268d51240ad61b6d6471f2700643188", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "244d19f25bac851bb047e02ecb9625644268d51240ad61b6d6471f2700643188", kill_on_drop: false }`
[INFO] [stdout] 244d19f25bac851bb047e02ecb9625644268d51240ad61b6d6471f2700643188