[INFO] fetching crate rustvello-prometheus 0.1.6...
[INFO] testing rustvello-prometheus-0.1.6 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate rustvello-prometheus 0.1.6 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate rustvello-prometheus 0.1.6
[INFO] finished tweaking crates.io crate rustvello-prometheus 0.1.6
[INFO] tweaked toml for crates.io crate rustvello-prometheus 0.1.6 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate rustvello-prometheus 0.1.6 on toolchain beta-2026-04-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate rustvello-prometheus 0.1.6 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-2026-04-21" "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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d71af30d85a23cb0d4ace5e1e2751c8075fd52a75a0e2f91ff60d9712b4853ae
[INFO] running `Command { std: "docker" "start" "-a" "d71af30d85a23cb0d4ace5e1e2751c8075fd52a75a0e2f91ff60d9712b4853ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d71af30d85a23cb0d4ace5e1e2751c8075fd52a75a0e2f91ff60d9712b4853ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d71af30d85a23cb0d4ace5e1e2751c8075fd52a75a0e2f91ff60d9712b4853ae", kill_on_drop: false }`
[INFO] [stdout] d71af30d85a23cb0d4ace5e1e2751c8075fd52a75a0e2f91ff60d9712b4853ae
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e4e99dabe70d35d10a8bbdc631276431e77ae743de3a9fd46fd9bd70c25f7cc7
[INFO] running `Command { std: "docker" "start" "-a" "e4e99dabe70d35d10a8bbdc631276431e77ae743de3a9fd46fd9bd70c25f7cc7", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling smallvec v1.15.0
[INFO] [stderr]    Compiling mio v1.0.3
[INFO] [stderr]    Compiling signal-hook-registry v1.4.5
[INFO] [stderr]    Compiling socket2 v0.5.9
[INFO] [stderr]    Compiling zerocopy v0.8.42
[INFO] [stderr]    Compiling cmake v0.1.57
[INFO] [stderr]    Compiling aws-lc-rs v1.16.2
[INFO] [stderr]    Compiling syn v2.0.100
[INFO] [stderr]    Compiling getrandom v0.3.2
[INFO] [stderr]    Compiling strsim v0.11.1
[INFO] [stderr]    Compiling http v1.4.0
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling rustls v0.23.37
[INFO] [stderr]    Compiling toml_parser v1.1.2+spec-1.1.0
[INFO] [stderr]    Compiling hashbrown v0.15.5
[INFO] [stderr]    Compiling rand_core v0.9.5
[INFO] [stderr]    Compiling futures-channel v0.3.32
[INFO] [stderr]    Compiling futures-task v0.3.32
[INFO] [stderr]    Compiling parking_lot_core v0.9.10
[INFO] [stderr]    Compiling parking_lot v0.12.3
[INFO] [stderr]    Compiling toml_writer v1.1.1+spec-1.1.0
[INFO] [stderr]    Compiling futures-util v0.3.32
[INFO] [stderr]    Compiling aws-lc-sys v0.39.0
[INFO] [stderr]    Compiling raw-cpuid v11.6.0
[INFO] [stderr]    Compiling sha2 v0.10.9
[INFO] [stderr]    Compiling rustls-native-certs v0.8.3
[INFO] [stderr]    Compiling rand_xoshiro v0.7.0
[INFO] [stderr]    Compiling sketches-ddsketch v0.3.1
[INFO] [stderr]    Compiling hostname v0.4.2
[INFO] [stderr]    Compiling ipnet v2.12.0
[INFO] [stderr]    Compiling lru v0.12.5
[INFO] [stderr]    Compiling http-body v1.0.1
[INFO] [stderr]    Compiling http-body-util v0.1.3
[INFO] [stderr]    Compiling toml_datetime v1.1.1+spec-1.1.0
[INFO] [stderr]    Compiling serde_spanned v1.1.1
[INFO] [stderr]    Compiling serde_json v1.0.149
[INFO] [stderr]    Compiling toml v1.1.2+spec-1.1.0
[INFO] [stderr]    Compiling quanta v0.12.6
[INFO] [stderr]    Compiling darling_core v0.20.11
[INFO] [stderr]    Compiling tracing-attributes v0.1.31
[INFO] [stderr]    Compiling tokio-macros v2.5.0
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling thiserror-impl v2.0.12
[INFO] [stderr]    Compiling cistell-macros v0.1.2
[INFO] [stderr]    Compiling strum_macros v0.27.2
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]    Compiling async-trait v0.1.88
[INFO] [stderr]    Compiling tokio v1.44.2
[INFO] [stderr]    Compiling thiserror v1.0.69
[INFO] [stderr]    Compiling tracing v0.1.44
[INFO] [stderr]    Compiling thiserror v2.0.12
[INFO] [stderr]    Compiling cistell-core v0.1.2
[INFO] [stderr]    Compiling darling_macro v0.20.11
[INFO] [stderr]    Compiling ppv-lite86 v0.2.21
[INFO] [stderr]    Compiling ahash v0.8.12
[INFO] [stderr]    Compiling metrics v0.24.3
[INFO] [stderr]    Compiling strum v0.27.2
[INFO] [stderr]    Compiling darling v0.20.11
[INFO] [stderr]    Compiling derive_builder_core v0.20.2
[INFO] [stderr]    Compiling rand_chacha v0.9.0
[INFO] [stderr]    Compiling rand v0.9.2
[INFO] [stderr]    Compiling metrics-util v0.19.1
[INFO] [stderr]    Compiling derive_builder_macro v0.20.2
[INFO] [stderr]    Compiling derive_builder v0.20.2
[INFO] [stderr]    Compiling chrono v0.4.44
[INFO] [stderr]    Compiling uuid v1.16.0
[INFO] [stderr]    Compiling croner v3.0.1
[INFO] [stderr]    Compiling rustvello-proto v0.1.6
[INFO] [stderr]    Compiling tokio-util v0.7.18
[INFO] [stderr]    Compiling h2 v0.4.13
[INFO] [stderr]    Compiling rustvello-core v0.1.6
[INFO] [stderr]    Compiling rustls-webpki v0.103.9
[INFO] [stderr]    Compiling hyper v1.8.1
[INFO] [stderr]    Compiling hyper-util v0.1.20
[INFO] [stderr]    Compiling tokio-rustls v0.26.4
[INFO] [stderr]    Compiling hyper-rustls v0.27.7
[INFO] [stderr]    Compiling metrics-exporter-prometheus v0.16.2
[INFO] [stderr]    Compiling rustvello-prometheus v0.1.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 02s
[INFO] running `Command { std: "docker" "inspect" "e4e99dabe70d35d10a8bbdc631276431e77ae743de3a9fd46fd9bd70c25f7cc7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e4e99dabe70d35d10a8bbdc631276431e77ae743de3a9fd46fd9bd70c25f7cc7", kill_on_drop: false }`
[INFO] [stdout] e4e99dabe70d35d10a8bbdc631276431e77ae743de3a9fd46fd9bd70c25f7cc7
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e87000219c158da0c682c13333378c7dfd204b150305f7442c1517ae40104449
[INFO] running `Command { std: "docker" "start" "-a" "e87000219c158da0c682c13333378c7dfd204b150305f7442c1517ae40104449", kill_on_drop: false }`
[INFO] [stderr]    Compiling tokio v1.44.2
[INFO] [stderr]    Compiling tokio-util v0.7.18
[INFO] [stderr]    Compiling tokio-rustls v0.26.4
[INFO] [stderr]    Compiling h2 v0.4.13
[INFO] [stderr]    Compiling rustvello-core v0.1.6
[INFO] [stderr]    Compiling hyper v1.8.1
[INFO] [stderr]    Compiling hyper-util v0.1.20
[INFO] [stderr]    Compiling hyper-rustls v0.27.7
[INFO] [stderr]    Compiling metrics-exporter-prometheus v0.16.2
[INFO] [stderr]    Compiling rustvello-prometheus v0.1.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 18.73s
[INFO] running `Command { std: "docker" "inspect" "e87000219c158da0c682c13333378c7dfd204b150305f7442c1517ae40104449", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e87000219c158da0c682c13333378c7dfd204b150305f7442c1517ae40104449", kill_on_drop: false }`
[INFO] [stdout] e87000219c158da0c682c13333378c7dfd204b150305f7442c1517ae40104449
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 960688595c36a66b719d9f4dbd00364f9e5437d6b633989ccdcfbe4c4a4a746b
[INFO] running `Command { std: "docker" "start" "-a" "960688595c36a66b719d9f4dbd00364f9e5437d6b633989ccdcfbe4c4a4a746b", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.27s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/rustvello_prometheus-edc7ca5b56294ff3)
[INFO] [stdout] 
[INFO] [stdout] running 11 tests
[INFO] [stdout] test sink::tests::worker_shutdown_decrements_gauge ... ok
[INFO] [stdout] test sink::tests::worker_started_increments_gauge ... ok
[INFO] [stdout] test sink::tests::cc_slot_released_decrements_gauge ... ok
[INFO] [stdout] test sink::tests::cc_rejected_increments_counter ... ok
[INFO] [stdout] test sink::tests::task_retried_increments_counter ... ok
[INFO] [stdout] test sink::tests::task_submitted_increments_counter ... ok
[INFO] [stdout] test sink::tests::queue_depth_sets_gauge ... ok
[INFO] [stdout] test sink::tests::cc_slot_acquired_increments_counter_and_gauge ... ok
[INFO] [stdout] test sink::tests::task_started_increments_counter ... ok
[INFO] [stdout] test sink::tests::task_succeeded_records_counter_and_histogram ... ok
[INFO] [stdout] test sink::tests::task_failed_records_counter_and_histogram ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 11 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests rustvello_prometheus
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/sink.rs - sink::PrometheusSink (line 31) - compile ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.08s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "960688595c36a66b719d9f4dbd00364f9e5437d6b633989ccdcfbe4c4a4a746b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "960688595c36a66b719d9f4dbd00364f9e5437d6b633989ccdcfbe4c4a4a746b", kill_on_drop: false }`
[INFO] [stdout] 960688595c36a66b719d9f4dbd00364f9e5437d6b633989ccdcfbe4c4a4a746b
