[INFO] fetching crate metrics-exporter-prometheus 0.8.0...
[INFO] testing metrics-exporter-prometheus-0.8.0 against beta-2022-02-22 for beta-1.60-1
[INFO] extracting crate metrics-exporter-prometheus 0.8.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate metrics-exporter-prometheus 0.8.0 on toolchain beta-2022-02-22
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate metrics-exporter-prometheus 0.8.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate metrics-exporter-prometheus 0.8.0
[INFO] tweaked toml for crates.io crate metrics-exporter-prometheus 0.8.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate metrics-exporter-prometheus 0.8.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded metrics-util v0.11.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b179e62d3f3ec9483d9da3fb8ea22ec64484a50be7d1efd09183656aa01c77fd
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "b179e62d3f3ec9483d9da3fb8ea22ec64484a50be7d1efd09183656aa01c77fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b179e62d3f3ec9483d9da3fb8ea22ec64484a50be7d1efd09183656aa01c77fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b179e62d3f3ec9483d9da3fb8ea22ec64484a50be7d1efd09183656aa01c77fd", kill_on_drop: false }`
[INFO] [stdout] b179e62d3f3ec9483d9da3fb8ea22ec64484a50be7d1efd09183656aa01c77fd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] c8bce41d9eca125a5fbc2a351451567d77772b0d08700ccb63c3eaca6fdd4c92
[INFO] running `Command { std: "docker" "start" "-a" "c8bce41d9eca125a5fbc2a351451567d77772b0d08700ccb63c3eaca6fdd4c92", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.85
[INFO] [stderr]    Compiling crossbeam-utils v0.8.6
[INFO] [stderr]    Compiling futures-task v0.3.19
[INFO] [stderr]    Compiling metrics v0.18.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.6
[INFO] [stderr]    Compiling futures-util v0.3.19
[INFO] [stderr]    Compiling sketches-ddsketch v0.1.2
[INFO] [stderr]    Compiling atomic-shim v0.2.0
[INFO] [stderr]    Compiling raw-cpuid v10.2.0
[INFO] [stderr]    Compiling futures-channel v0.3.19
[INFO] [stderr]    Compiling ahash v0.7.6
[INFO] [stderr]    Compiling tokio v1.15.0
[INFO] [stderr]    Compiling parking_lot v0.11.2
[INFO] [stderr]    Compiling hashbrown v0.11.2
[INFO] [stderr]    Compiling indexmap v1.8.0
[INFO] [stderr]    Compiling quanta v0.9.3
[INFO] [stderr]    Compiling tracing-attributes v0.1.18
[INFO] [stderr]    Compiling metrics-macros v0.5.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]    Compiling tracing v0.1.29
[INFO] [stderr]    Compiling metrics-util v0.11.0
[INFO] [stderr]    Compiling thiserror v1.0.30
[INFO] [stderr]    Compiling hyper v0.14.16
[INFO] [stderr]    Compiling metrics-exporter-prometheus v0.8.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 51.53s
[INFO] running `Command { std: "docker" "inspect" "c8bce41d9eca125a5fbc2a351451567d77772b0d08700ccb63c3eaca6fdd4c92", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c8bce41d9eca125a5fbc2a351451567d77772b0d08700ccb63c3eaca6fdd4c92", kill_on_drop: false }`
[INFO] [stdout] c8bce41d9eca125a5fbc2a351451567d77772b0d08700ccb63c3eaca6fdd4c92
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 33021e65f65fdfcebf5872086ff1016033d5ab3714af9403ee916eb108fa49ae
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "33021e65f65fdfcebf5872086ff1016033d5ab3714af9403ee916eb108fa49ae", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling thread_local v1.1.3
[INFO] [stderr]    Compiling wait-timeout v0.2.0
[INFO] [stderr]    Compiling rand_xorshift v0.3.0
[INFO] [stderr]    Compiling rusty-fork v0.3.0
[INFO] [stderr]    Compiling tracing-subscriber v0.3.6
[INFO] [stderr]    Compiling proptest v1.0.0
[INFO] [stderr]    Compiling metrics-exporter-prometheus v0.8.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 23.05s
[INFO] running `Command { std: "docker" "inspect" "33021e65f65fdfcebf5872086ff1016033d5ab3714af9403ee916eb108fa49ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "33021e65f65fdfcebf5872086ff1016033d5ab3714af9403ee916eb108fa49ae", kill_on_drop: false }`
[INFO] [stdout] 33021e65f65fdfcebf5872086ff1016033d5ab3714af9403ee916eb108fa49ae
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 3da6ef7de732d0af138471cf3d36ae0ec29c3502fc2724bae61ada0e8fd0a010
[INFO] running `Command { std: "docker" "start" "-a" "3da6ef7de732d0af138471cf3d36ae0ec29c3502fc2724bae61ada0e8fd0a010", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.15s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/metrics_exporter_prometheus-f09580aeabb798cc)
[INFO] [stdout] running 17 tests
[INFO] [stdout] test builder::tests::test_buckets ... ok
[INFO] [stdout] test common::tests::test_sanitize_description_known_cases ... ok
[INFO] [stdout] test common::tests::test_sanitize_label_key_known_cases ... ok
[INFO] [stdout] test builder::tests::test_sanitized_render ... ok
[INFO] [stdout] test builder::tests::test_idle_timeout_all ... ok
[INFO] [stdout] test builder::tests::test_idle_timeout_partial ... ok
[INFO] [stdout] test builder::tests::test_global_labels ... ok
[INFO] [stdout] test builder::tests::test_idle_timeout_staggered_distributions ... ok
[INFO] [stdout] test builder::tests::test_idle_timeout_doesnt_remove_recents ... ok
[INFO] [stdout] test builder::tests::test_render ... ok
[INFO] [stdout] test common::tests::test_sanitize_metric_name_known_cases ... ok
[INFO] [stdout] test builder::tests::test_global_labels_overrides ... ok
[INFO] [stdout] test common::tests::test_sanitize_label_value_known_cases ... ok
[INFO] [stdout] test common::tests::test_sanitize_description ... ok
[INFO] [stdout] test common::tests::test_sanitize_metric_name ... ok
[INFO] [stdout] test common::tests::test_sanitize_label_value ... ok
[INFO] [stderr]    Doc-tests metrics-exporter-prometheus
[INFO] [stdout] test common::tests::test_sanitize_label_key ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 17 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.30s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - (line 46) ... ignored
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 1 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "3da6ef7de732d0af138471cf3d36ae0ec29c3502fc2724bae61ada0e8fd0a010", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3da6ef7de732d0af138471cf3d36ae0ec29c3502fc2724bae61ada0e8fd0a010", kill_on_drop: false }`
[INFO] [stdout] 3da6ef7de732d0af138471cf3d36ae0ec29c3502fc2724bae61ada0e8fd0a010