[INFO] crate metrics-recorder-prometheus 0.2.3 is already in cache
[INFO] extracting crate metrics-recorder-prometheus 0.2.3 into work/ex/beta-1.37-6/sources/1.36.0/reg/metrics-recorder-prometheus/0.2.3
[INFO] extracting crate metrics-recorder-prometheus 0.2.3 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/metrics-recorder-prometheus/0.2.3
[INFO] validating manifest of metrics-recorder-prometheus-0.2.3 on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of metrics-recorder-prometheus-0.2.3 on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing metrics-recorder-prometheus-0.2.3
[INFO] finished frobbing metrics-recorder-prometheus-0.2.3
[INFO] frobbed toml for metrics-recorder-prometheus-0.2.3 written to work/ex/beta-1.37-6/sources/1.36.0/reg/metrics-recorder-prometheus/0.2.3/Cargo.toml
[INFO] started frobbing metrics-recorder-prometheus-0.2.3
[INFO] finished frobbing metrics-recorder-prometheus-0.2.3
[INFO] frobbed toml for metrics-recorder-prometheus-0.2.3 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/metrics-recorder-prometheus/0.2.3/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing metrics-recorder-prometheus-0.2.3 against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/metrics-recorder-prometheus/0.2.3:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-07-23" "build" "--frozen"`
[INFO] [stdout] 43b5667f8e7b5a7d4f1fd83293fed4c5b1177e7648de8fad36f2e01b319a1636
[INFO] running `"docker" "start" "-a" "43b5667f8e7b5a7d4f1fd83293fed4c5b1177e7648de8fad36f2e01b319a1636"`
[INFO] [stderr]    Compiling metrics-core v0.4.0
[INFO] [stderr]    Compiling hdrhistogram v6.3.4
[INFO] [stderr]    Compiling metrics-util v0.2.1
[INFO] [stderr]    Compiling metrics-recorder-prometheus v0.2.3 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.20s
[INFO] running `"docker" "inspect" "43b5667f8e7b5a7d4f1fd83293fed4c5b1177e7648de8fad36f2e01b319a1636"`
[INFO] running `"docker" "rm" "-f" "43b5667f8e7b5a7d4f1fd83293fed4c5b1177e7648de8fad36f2e01b319a1636"`
[INFO] [stdout] 43b5667f8e7b5a7d4f1fd83293fed4c5b1177e7648de8fad36f2e01b319a1636
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/metrics-recorder-prometheus/0.2.3:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] a1a4fc7427f83a07905d2dc2109b8efd8d2608caebe3933cfebb816fbf04bb5d
[INFO] running `"docker" "start" "-a" "a1a4fc7427f83a07905d2dc2109b8efd8d2608caebe3933cfebb816fbf04bb5d"`
[INFO] [stderr]    Compiling metrics-recorder-prometheus v0.2.3 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.72s
[INFO] running `"docker" "inspect" "a1a4fc7427f83a07905d2dc2109b8efd8d2608caebe3933cfebb816fbf04bb5d"`
[INFO] running `"docker" "rm" "-f" "a1a4fc7427f83a07905d2dc2109b8efd8d2608caebe3933cfebb816fbf04bb5d"`
[INFO] [stdout] a1a4fc7427f83a07905d2dc2109b8efd8d2608caebe3933cfebb816fbf04bb5d
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/metrics-recorder-prometheus/0.2.3:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-07-23" "test" "--frozen"`
[INFO] [stdout] 8c38943ba0c021aaa54619290517447e79032d948676095ff6b5c65b06d3ccde
[INFO] running `"docker" "start" "-a" "8c38943ba0c021aaa54619290517447e79032d948676095ff6b5c65b06d3ccde"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/metrics_recorder_prometheus-222955fbdd36e515
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests metrics-recorder-prometheus
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "8c38943ba0c021aaa54619290517447e79032d948676095ff6b5c65b06d3ccde"`
[INFO] running `"docker" "rm" "-f" "8c38943ba0c021aaa54619290517447e79032d948676095ff6b5c65b06d3ccde"`
[INFO] [stdout] 8c38943ba0c021aaa54619290517447e79032d948676095ff6b5c65b06d3ccde