[INFO] fetching crate witchcraft-metrics 0.2.0...
[INFO] testing witchcraft-metrics-0.2.0 against try#ce59db7a1b1b012fb2793c4641c1bdecad7a128b for pr-85530
[INFO] extracting crate witchcraft-metrics 0.2.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate witchcraft-metrics 0.2.0 on toolchain ce59db7a1b1b012fb2793c4641c1bdecad7a128b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate witchcraft-metrics 0.2.0
[INFO] finished tweaking crates.io crate witchcraft-metrics 0.2.0
[INFO] tweaked toml for crates.io crate witchcraft-metrics 0.2.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded exponential-decay-histogram v0.1.9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 780d64e9ff57c3774963834d40cfb36025b415177b8ecf58dacc2b062e3b900d
[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" "780d64e9ff57c3774963834d40cfb36025b415177b8ecf58dacc2b062e3b900d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "780d64e9ff57c3774963834d40cfb36025b415177b8ecf58dacc2b062e3b900d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "780d64e9ff57c3774963834d40cfb36025b415177b8ecf58dacc2b062e3b900d", kill_on_drop: false }`
[INFO] [stdout] 780d64e9ff57c3774963834d40cfb36025b415177b8ecf58dacc2b062e3b900d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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=forbid" "-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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 41eb497d94636adcc3464ea9b636de30539fc35bc40590446cf439836513c180
[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" "41eb497d94636adcc3464ea9b636de30539fc35bc40590446cf439836513c180", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling instant v0.1.9
[INFO] [stderr]    Compiling rand v0.8.3
[INFO] [stderr]    Compiling lock_api v0.4.4
[INFO] [stderr]    Compiling parking_lot_core v0.8.3
[INFO] [stderr]    Compiling parking_lot v0.11.1
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling ordered-float v2.5.1
[INFO] [stderr]    Compiling serde-value v0.7.0
[INFO] [stderr]    Compiling exponential-decay-histogram v0.1.9
[INFO] [stderr]    Compiling witchcraft-metrics v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.46s
[INFO] running `Command { std: "docker" "inspect" "41eb497d94636adcc3464ea9b636de30539fc35bc40590446cf439836513c180", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "41eb497d94636adcc3464ea9b636de30539fc35bc40590446cf439836513c180", kill_on_drop: false }`
[INFO] [stdout] 41eb497d94636adcc3464ea9b636de30539fc35bc40590446cf439836513c180
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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=forbid" "-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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e0c0c60624df4f08fef85e81fbbbe84546dcdb9f6b2005bb49b2f53164a78ea2
[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" "e0c0c60624df4f08fef85e81fbbbe84546dcdb9f6b2005bb49b2f53164a78ea2", kill_on_drop: false }`
[INFO] [stderr]    Compiling assert_approx_eq v1.1.0
[INFO] [stderr]    Compiling witchcraft-metrics v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.13s
[INFO] running `Command { std: "docker" "inspect" "e0c0c60624df4f08fef85e81fbbbe84546dcdb9f6b2005bb49b2f53164a78ea2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e0c0c60624df4f08fef85e81fbbbe84546dcdb9f6b2005bb49b2f53164a78ea2", kill_on_drop: false }`
[INFO] [stdout] e0c0c60624df4f08fef85e81fbbbe84546dcdb9f6b2005bb49b2f53164a78ea2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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=forbid" "-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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] fcdf0ffd1864904290bfb1130dddeb1cc42e909b54fd68b14ea560c873ff4fb3
[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" "fcdf0ffd1864904290bfb1130dddeb1cc42e909b54fd68b14ea560c873ff4fb3", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/witchcraft_metrics-86f73ff37d2ae975)
[INFO] [stdout] running 12 tests
[INFO] [stdout] test counter::test::basic ... ok
[INFO] [stdout] test histogram::test::basic ... ok
[INFO] [stdout] test meter::test::starts_out_with_no_rates_or_count ... ok
[INFO] [stdout] test metric_id::test::basic ... ok
[INFO] [stdout] test gauge::test::downcast ... ok
[INFO] [stdout] test registry::test::first_metric_wins ... ok
[INFO] [stdout] test reservoir::test::exponential_basic ... ok
[INFO] [stdout] test meter::test::marks_events_and_updates_rate_and_count ... ok
[INFO] [stdout] test timer::test::basic ... ok
[INFO] [stdout] test registry::test::metrics_returns_snapshot ... ok
[INFO] [stdout] test registry::test::tagged_distinct_from_untagged ... ok
[INFO] [stderr]    Doc-tests witchcraft-metrics
[INFO] [stdout] test timer::test::time ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 12 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/registry.rs - registry::MetricRegistry (line 42) ... ok
[INFO] [stdout] test src/lib.rs - (line 20) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.33s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "fcdf0ffd1864904290bfb1130dddeb1cc42e909b54fd68b14ea560c873ff4fb3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fcdf0ffd1864904290bfb1130dddeb1cc42e909b54fd68b14ea560c873ff4fb3", kill_on_drop: false }`
[INFO] [stdout] fcdf0ffd1864904290bfb1130dddeb1cc42e909b54fd68b14ea560c873ff4fb3