[INFO] updating cached repository florentw/erosion
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/florentw/erosion
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/florentw/erosion" "work/ex/beta-1.38-1/sources/1.37.0/gh/florentw/erosion"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/florentw/erosion'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/florentw/erosion" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/florentw/erosion"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/florentw/erosion'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 350f1fb30b2bf671277850f9b72330d27248fddd
[INFO] sha for GitHub repo florentw/erosion: 350f1fb30b2bf671277850f9b72330d27248fddd
[INFO] validating manifest of florentw/erosion 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 florentw/erosion 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 florentw/erosion
[INFO] finished frobbing florentw/erosion
[INFO] frobbed toml for florentw/erosion written to work/ex/beta-1.38-1/sources/1.37.0/gh/florentw/erosion/Cargo.toml
[INFO] started frobbing florentw/erosion
[INFO] finished frobbing florentw/erosion
[INFO] frobbed toml for florentw/erosion written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/florentw/erosion/Cargo.toml
[INFO] crate florentw/erosion 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 florentw/erosion 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-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/florentw/erosion:/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] ddfd0cd2abfe9ace6cfb510e478a4da76f250f71a62ffc23063e3ef505c7c8aa
[INFO] running `"docker" "start" "-a" "ddfd0cd2abfe9ace6cfb510e478a4da76f250f71a62ffc23063e3ef505c7c8aa"`
[INFO] [stderr]    Compiling erosion v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/throughput/mod.rs:49:9
[INFO] [stderr]    |
[INFO] [stderr] 49 |     let mut running = true;
[INFO] [stderr]    |         ----^^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.45s
[INFO] running `"docker" "inspect" "ddfd0cd2abfe9ace6cfb510e478a4da76f250f71a62ffc23063e3ef505c7c8aa"`
[INFO] running `"docker" "rm" "-f" "ddfd0cd2abfe9ace6cfb510e478a4da76f250f71a62ffc23063e3ef505c7c8aa"`
[INFO] [stdout] ddfd0cd2abfe9ace6cfb510e478a4da76f250f71a62ffc23063e3ef505c7c8aa
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/florentw/erosion:/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] 817dba0d3d82cac8932bcfe41f0bf9886e4b33c45fe148e84301067b98de5036
[INFO] running `"docker" "start" "-a" "817dba0d3d82cac8932bcfe41f0bf9886e4b33c45fe148e84301067b98de5036"`
[INFO] [stderr]    Compiling erosion v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/throughput/mod.rs:49:9
[INFO] [stderr]    |
[INFO] [stderr] 49 |     let mut running = true;
[INFO] [stderr]    |         ----^^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.39s
[INFO] running `"docker" "inspect" "817dba0d3d82cac8932bcfe41f0bf9886e4b33c45fe148e84301067b98de5036"`
[INFO] running `"docker" "rm" "-f" "817dba0d3d82cac8932bcfe41f0bf9886e4b33c45fe148e84301067b98de5036"`
[INFO] [stdout] 817dba0d3d82cac8932bcfe41f0bf9886e4b33c45fe148e84301067b98de5036
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/florentw/erosion:/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] c591bd58ae4c641ab565da5b14773fca2848eee046d1833f0287e556a8e0f999
[INFO] running `"docker" "start" "-a" "c591bd58ae4c641ab565da5b14773fca2848eee046d1833f0287e556a8e0f999"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/erosion-83eea59b49f3a2b7
[INFO] [stdout] 
[INFO] [stdout] running 10 tests
[INFO] [stdout] test throughput::tests::achieved_throughput_returns_rounded_throughput ... ok
[INFO] [stdout] test throughput::tests::achieved_throughput_returns_minus_one_when_elapsed_is_zero ... ok
[INFO] [stdout] test throughput::tests::remaining_sleep_duration_returns_zero_when_start_is_in_the_future ... ok
[INFO] [stdout] test throughput::tests::should_add_event_from_remainder_returns_false_when_index_is_outside_remainder_interval ... ok
[INFO] [stdout] test throughput::tests::round_function_rounds_to_two_places ... ok
[INFO] [stdout] test throughput::tests::should_add_event_from_remainder_returns_false_when_no_remainder ... ok
[INFO] [stdout] test throughput::tests::should_add_event_from_remainder_returns_true_when_index_is_in_remainder_interval ... ok
[INFO] [stdout] test throughput::tests::sleep_if_too_fast_returns_false_if_duration_zero ... ok
[INFO] [stdout] test throughput::tests::sleep_if_too_fast_returns_true_if_duration_not_zero ... ok
[INFO] [stdout] test throughput::tests::to_millis_converts_duration_to_integer ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 10 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/mono_thread_inttest-24edf17be4d8ada6
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test throughput_generator_calls_event_function_once_a_sec ... ok
[INFO] [stdout] test throughput_generator_calls_event_function_thousands_times_a_sec ... ok
[INFO] [stdout] test throughput_generator_calls_event_function_three_hundred_times_a_sec ... ok
[INFO] [stdout] test throughput_generator_calls_event_function_hundred_times_a_sec ... ok
[INFO] [stdout] test throughput_generator_calls_event_function_five_hundred_times_a_sec ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests erosion
[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" "c591bd58ae4c641ab565da5b14773fca2848eee046d1833f0287e556a8e0f999"`
[INFO] running `"docker" "rm" "-f" "c591bd58ae4c641ab565da5b14773fca2848eee046d1833f0287e556a8e0f999"`
[INFO] [stdout] c591bd58ae4c641ab565da5b14773fca2848eee046d1833f0287e556a8e0f999