[INFO] fetching crate prometheus_exporter_base 1.3.0...
[INFO] testing prometheus_exporter_base-1.3.0 against beta-2022-02-22 for beta-1.60-1
[INFO] extracting crate prometheus_exporter_base 1.3.0 into /workspace/builds/worker-19/source
[INFO] validating manifest of crates.io crate prometheus_exporter_base 1.3.0 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 prometheus_exporter_base 1.3.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate prometheus_exporter_base 1.3.0
[INFO] tweaked toml for crates.io crate prometheus_exporter_base 1.3.0 written to /workspace/builds/worker-19/source/Cargo.toml
[INFO] crate crates.io crate prometheus_exporter_base 1.3.0 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/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] e4932bf5e90da0af7a9397b51023defeb46e5fa147f14c46984f12487c563d9a
[INFO] running `Command { std: "docker" "start" "-a" "e4932bf5e90da0af7a9397b51023defeb46e5fa147f14c46984f12487c563d9a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e4932bf5e90da0af7a9397b51023defeb46e5fa147f14c46984f12487c563d9a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e4932bf5e90da0af7a9397b51023defeb46e5fa147f14c46984f12487c563d9a", kill_on_drop: false }`
[INFO] [stdout] e4932bf5e90da0af7a9397b51023defeb46e5fa147f14c46984f12487c563d9a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/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] [stdout] 2353b41a35a856b23c74efd737ef253956018ae3371c047ef6b4e7cd9d646759
[INFO] running `Command { std: "docker" "start" "-a" "2353b41a35a856b23c74efd737ef253956018ae3371c047ef6b4e7cd9d646759", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling libc v0.2.91
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling syn v1.0.67
[INFO] [stderr]    Compiling serde v1.0.125
[INFO] [stderr]    Compiling regex-syntax v0.6.23
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling aho-corasick v0.7.15
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling regex v1.4.5
[INFO] [stderr]    Compiling env_logger v0.7.1
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]    Compiling num v0.2.1
[INFO] [stderr]    Compiling thiserror-impl v1.0.24
[INFO] [stderr]    Compiling thiserror v1.0.24
[INFO] [stderr]    Compiling prometheus_exporter_base v1.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 21.57s
[INFO] running `Command { std: "docker" "inspect" "2353b41a35a856b23c74efd737ef253956018ae3371c047ef6b4e7cd9d646759", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2353b41a35a856b23c74efd737ef253956018ae3371c047ef6b4e7cd9d646759", kill_on_drop: false }`
[INFO] [stdout] 2353b41a35a856b23c74efd737ef253956018ae3371c047ef6b4e7cd9d646759
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/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] a9c159c9285269e8f701ad2b2f9aed79b0426a263e985fefa33eefa9bcb8385f
[INFO] running `Command { std: "docker" "start" "-a" "a9c159c9285269e8f701ad2b2f9aed79b0426a263e985fefa33eefa9bcb8385f", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling smallvec v1.6.1
[INFO] [stderr]    Compiling bytes v1.0.1
[INFO] [stderr]    Compiling pin-project-lite v0.2.6
[INFO] [stderr]    Compiling once_cell v1.7.2
[INFO] [stderr]    Compiling tokio v1.4.0
[INFO] [stderr]    Compiling instant v0.1.9
[INFO] [stderr]    Compiling lock_api v0.4.2
[INFO] [stderr]    Compiling mio v0.7.11
[INFO] [stderr]    Compiling signal-hook-registry v1.3.0
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling tokio-macros v1.1.0
[INFO] [stderr]    Compiling parking_lot_core v0.8.3
[INFO] [stderr]    Compiling parking_lot v0.11.1
[INFO] [stderr]    Compiling prometheus_exporter_base v1.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 6.95s
[INFO] running `Command { std: "docker" "inspect" "a9c159c9285269e8f701ad2b2f9aed79b0426a263e985fefa33eefa9bcb8385f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a9c159c9285269e8f701ad2b2f9aed79b0426a263e985fefa33eefa9bcb8385f", kill_on_drop: false }`
[INFO] [stdout] a9c159c9285269e8f701ad2b2f9aed79b0426a263e985fefa33eefa9bcb8385f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/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] [stdout] dcdd4162f382990cf323fcf0b5aede82b84ece1a461a3c4535aa2e82e8f653bf
[INFO] running `Command { std: "docker" "start" "-a" "dcdd4162f382990cf323fcf0b5aede82b84ece1a461a3c4535aa2e82e8f653bf", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/prometheus_exporter_base-8eb61fbe9c1352d3)
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test metric_type::tests::test_as_ref ... ok
[INFO] [stdout] test metric_type::tests::test_display ... ok
[INFO] [stdout] test metric_type::tests::test_try_from_ok ... ok
[INFO] [stdout] test prometheus_metric::tests::test_header ... ok
[INFO] [stdout] test prometheus_metric::tests::test_no_labels ... ok
[INFO] [stdout] test prometheus_metric::tests::test_labels ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests prometheus_exporter_base
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test src/prometheus_instance.rs - prometheus_instance::PrometheusInstance::with_value (line 113) ... ok
[INFO] [stdout] test src/prometheus_instance.rs - prometheus_instance::PrometheusInstance::with_timestamp (line 69) ... ok
[INFO] [stdout] test src/prometheus_instance.rs - prometheus_instance::PrometheusInstance::with_current_timestamp (line 90) ... ok
[INFO] [stdout] test src/prometheus_metric_builder.rs - prometheus_metric_builder::PrometheusMetricBuilder::build (line 153) ... ok
[INFO] [stdout] test src/prometheus_metric.rs - prometheus_metric::PrometheusMetric::build (line 32) ... ok
[INFO] [stdout] test src/prometheus_metric.rs - prometheus_metric::PrometheusMetric::render_and_append_instance (line 66) ... ok
[INFO] [stdout] test src/lib.rs - (line 24) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.33s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "dcdd4162f382990cf323fcf0b5aede82b84ece1a461a3c4535aa2e82e8f653bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dcdd4162f382990cf323fcf0b5aede82b84ece1a461a3c4535aa2e82e8f653bf", kill_on_drop: false }`
[INFO] [stdout] dcdd4162f382990cf323fcf0b5aede82b84ece1a461a3c4535aa2e82e8f653bf