[INFO] updating cached repository durch/tokio-metrics-poc
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/durch/tokio-metrics-poc
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/durch/tokio-metrics-poc" "work/ex/beta-1.38-1/sources/1.37.0/gh/durch/tokio-metrics-poc"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/durch/tokio-metrics-poc'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/durch/tokio-metrics-poc" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/durch/tokio-metrics-poc"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/durch/tokio-metrics-poc'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] eaa337d0781df83c82cf198ae2ab07cc9b628b27
[INFO] sha for GitHub repo durch/tokio-metrics-poc: eaa337d0781df83c82cf198ae2ab07cc9b628b27
[INFO] validating manifest of durch/tokio-metrics-poc on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of durch/tokio-metrics-poc on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing durch/tokio-metrics-poc
[INFO] finished frobbing durch/tokio-metrics-poc
[INFO] frobbed toml for durch/tokio-metrics-poc written to work/ex/beta-1.38-1/sources/1.37.0/gh/durch/tokio-metrics-poc/Cargo.toml
[INFO] started frobbing durch/tokio-metrics-poc
[INFO] finished frobbing durch/tokio-metrics-poc
[INFO] frobbed toml for durch/tokio-metrics-poc written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/durch/tokio-metrics-poc/Cargo.toml
[INFO] crate durch/tokio-metrics-poc already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing durch/tokio-metrics-poc against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/durch/tokio-metrics-poc:/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-2019-08-13" "build" "--frozen"`
[INFO] [stdout] d9964460333835253c73aec79a9b9b4cdbb732cbd9518c921412655a8bbb41ab
[INFO] running `"docker" "start" "-a" "d9964460333835253c73aec79a9b9b4cdbb732cbd9518c921412655a8bbb41ab"`
[INFO] [stderr]    Compiling futures v0.1.13
[INFO] [stderr]    Compiling histogram v0.6.4
[INFO] [stderr]    Compiling iovec v0.1.0
[INFO] [stderr]    Compiling net2 v0.2.27
[INFO] [stderr]    Compiling bytes v0.4.2
[INFO] [stderr]    Compiling metrics v0.2.2 (https://github.com/durch/rust-metrics#b3e477f3)
[INFO] [stderr]    Compiling mio v0.6.6
[INFO] [stderr]    Compiling tokio-io v0.1.1
[INFO] [stderr]    Compiling tokio-service v0.1.0
[INFO] [stderr]    Compiling futures-cpupool v0.1.5
[INFO] [stderr]    Compiling tokio-core v0.1.6
[INFO] [stderr]    Compiling tokio-proto v0.1.1
[INFO] [stderr]    Compiling tokio-minihttp v0.1.0 (https://github.com/tokio-rs/tokio-minihttp#2c739394)
[INFO] [stderr]    Compiling tokio-metrics v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::time::SystemTime`
[INFO] [stderr]   --> src/main.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 | use std::time::SystemTime;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 20.42s
[INFO] running `"docker" "inspect" "d9964460333835253c73aec79a9b9b4cdbb732cbd9518c921412655a8bbb41ab"`
[INFO] running `"docker" "rm" "-f" "d9964460333835253c73aec79a9b9b4cdbb732cbd9518c921412655a8bbb41ab"`
[INFO] [stdout] d9964460333835253c73aec79a9b9b4cdbb732cbd9518c921412655a8bbb41ab
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/durch/tokio-metrics-poc:/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-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] b39cfd6e943ca397f82b8a5ad817ee4d49e2a25c887c3c587f4f94829efbf3be
[INFO] running `"docker" "start" "-a" "b39cfd6e943ca397f82b8a5ad817ee4d49e2a25c887c3c587f4f94829efbf3be"`
[INFO] [stderr]    Compiling tokio-metrics v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::time::SystemTime`
[INFO] [stderr]   --> src/main.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 | use std::time::SystemTime;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.90s
[INFO] running `"docker" "inspect" "b39cfd6e943ca397f82b8a5ad817ee4d49e2a25c887c3c587f4f94829efbf3be"`
[INFO] running `"docker" "rm" "-f" "b39cfd6e943ca397f82b8a5ad817ee4d49e2a25c887c3c587f4f94829efbf3be"`
[INFO] [stdout] b39cfd6e943ca397f82b8a5ad817ee4d49e2a25c887c3c587f4f94829efbf3be
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/durch/tokio-metrics-poc:/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-2019-08-13" "test" "--frozen"`
[INFO] [stdout] 9ebc56a858bac3d0bf33514613959b81edb34e947b2ee9adb1c7c430d9f2a81a
[INFO] running `"docker" "start" "-a" "9ebc56a858bac3d0bf33514613959b81edb34e947b2ee9adb1c7c430d9f2a81a"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/tokio_metrics-88efd83d11afa3fe
[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" "9ebc56a858bac3d0bf33514613959b81edb34e947b2ee9adb1c7c430d9f2a81a"`
[INFO] running `"docker" "rm" "-f" "9ebc56a858bac3d0bf33514613959b81edb34e947b2ee9adb1c7c430d9f2a81a"`
[INFO] [stdout] 9ebc56a858bac3d0bf33514613959b81edb34e947b2ee9adb1c7c430d9f2a81a