[INFO] crate buffett-metrics 0.1.3 is already in cache
[INFO] extracting crate buffett-metrics 0.1.3 into work/ex/beta-1.38-1/sources/1.37.0/reg/buffett-metrics/0.1.3
[INFO] extracting crate buffett-metrics 0.1.3 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/buffett-metrics/0.1.3
[INFO] validating manifest of buffett-metrics-0.1.3 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 buffett-metrics-0.1.3 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 buffett-metrics-0.1.3
[INFO] finished frobbing buffett-metrics-0.1.3
[INFO] frobbed toml for buffett-metrics-0.1.3 written to work/ex/beta-1.38-1/sources/1.37.0/reg/buffett-metrics/0.1.3/Cargo.toml
[INFO] started frobbing buffett-metrics-0.1.3
[INFO] finished frobbing buffett-metrics-0.1.3
[INFO] frobbed toml for buffett-metrics-0.1.3 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/buffett-metrics/0.1.3/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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 buffett-metrics-0.1.3 against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/buffett-metrics/0.1.3:/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 2c03190abae52defaf491e64f319d6362227c8744ffdcfc6b6722470bfb236bc
[INFO] running `"docker" "start" "-a" "2c03190abae52defaf491e64f319d6362227c8744ffdcfc6b6722470bfb236bc"`
[INFO] [stderr]    Compiling buffett-timing v0.1.1
[INFO] [stderr]    Compiling sys-info v0.5.7
[INFO] [stderr]    Compiling hyper-native-tls v0.3.0
[INFO] [stderr]    Compiling influx_db_client v0.3.6
[INFO] [stderr]    Compiling buffett-metrics v0.1.3 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/metrics.rs:80:32
[INFO] [stderr]    |
[INFO] [stderr] 80 |     fn new(metrics_writer: Arc<MetricsWriter + Send + Sync>, write_frequency: Duration) -> Self {
[INFO] [stderr]    |                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn MetricsWriter + Send + Sync`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/metrics.rs:88:22
[INFO] [stderr]    |
[INFO] [stderr] 88 |         writer: &Arc<MetricsWriter + Send + Sync>,
[INFO] [stderr]    |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn MetricsWriter + Send + Sync`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.69s
[INFO] running `"docker" "inspect" "2c03190abae52defaf491e64f319d6362227c8744ffdcfc6b6722470bfb236bc"`
[INFO] running `"docker" "rm" "-f" "2c03190abae52defaf491e64f319d6362227c8744ffdcfc6b6722470bfb236bc"`
[INFO] [stdout] 2c03190abae52defaf491e64f319d6362227c8744ffdcfc6b6722470bfb236bc
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/buffett-metrics/0.1.3:/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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 58461ad987cf35189afa7665281baf1e6c32e150903a972523bdfcc5c11c1d7c
[INFO] running `"docker" "start" "-a" "58461ad987cf35189afa7665281baf1e6c32e150903a972523bdfcc5c11c1d7c"`
[INFO] [stderr]    Compiling buffett-metrics v0.1.3 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/metrics.rs:80:32
[INFO] [stderr]    |
[INFO] [stderr] 80 |     fn new(metrics_writer: Arc<MetricsWriter + Send + Sync>, write_frequency: Duration) -> Self {
[INFO] [stderr]    |                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn MetricsWriter + Send + Sync`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/metrics.rs:88:22
[INFO] [stderr]    |
[INFO] [stderr] 88 |         writer: &Arc<MetricsWriter + Send + Sync>,
[INFO] [stderr]    |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn MetricsWriter + Send + Sync`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.59s
[INFO] running `"docker" "inspect" "58461ad987cf35189afa7665281baf1e6c32e150903a972523bdfcc5c11c1d7c"`
[INFO] running `"docker" "rm" "-f" "58461ad987cf35189afa7665281baf1e6c32e150903a972523bdfcc5c11c1d7c"`
[INFO] [stdout] 58461ad987cf35189afa7665281baf1e6c32e150903a972523bdfcc5c11c1d7c
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/buffett-metrics/0.1.3:/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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 33e7db4b7aeaefb96347a1e22f83473b625c665c7fbeb54b0193b3326ee65fa8
[INFO] running `"docker" "start" "-a" "33e7db4b7aeaefb96347a1e22f83473b625c665c7fbeb54b0193b3326ee65fa8"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/buffett_metrics-e5bf20d5ce4e1e9e
[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 buffett-metrics
[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" "33e7db4b7aeaefb96347a1e22f83473b625c665c7fbeb54b0193b3326ee65fa8"`
[INFO] running `"docker" "rm" "-f" "33e7db4b7aeaefb96347a1e22f83473b625c665c7fbeb54b0193b3326ee65fa8"`
[INFO] [stdout] 33e7db4b7aeaefb96347a1e22f83473b625c665c7fbeb54b0193b3326ee65fa8