[INFO] updating cached repository https://github.com/florentw/erosion
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 350f1fb30b2bf671277850f9b72330d27248fddd
[INFO] testing florentw/erosion against beta-2019-09-28 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fflorentw%2Ferosion" "work/builds/worker-1/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/florentw/erosion on toolchain beta-2019-09-28
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/florentw/erosion
[INFO] finished tweaking git repo https://github.com/florentw/erosion
[INFO] tweaked toml for git repo https://github.com/florentw/erosion written to work/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/florentw/erosion already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-1/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "build" "--frozen"`
[INFO] [stdout] e5b105171ffdc58a32665aa9c609d87bff7431930c05215ddd60aa78b0a91516
[INFO] running `"docker" "start" "-a" "e5b105171ffdc58a32665aa9c609d87bff7431930c05215ddd60aa78b0a91516"`
[INFO] [stderr]    Compiling erosion v0.1.0 (/opt/rustwide/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 0.18s
[INFO] running `"docker" "inspect" "e5b105171ffdc58a32665aa9c609d87bff7431930c05215ddd60aa78b0a91516"`
[INFO] running `"docker" "rm" "-f" "e5b105171ffdc58a32665aa9c609d87bff7431930c05215ddd60aa78b0a91516"`
[INFO] [stdout] e5b105171ffdc58a32665aa9c609d87bff7431930c05215ddd60aa78b0a91516
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-1/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "test" "--frozen" "--no-run"`
[INFO] [stdout] c38badc256c173f003e4da2a70c6c84fabbcb80bee2e4dca9db2b819954e1db5
[INFO] running `"docker" "start" "-a" "c38badc256c173f003e4da2a70c6c84fabbcb80bee2e4dca9db2b819954e1db5"`
[INFO] [stderr]    Compiling erosion v0.1.0 (/opt/rustwide/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 0.81s
[INFO] running `"docker" "inspect" "c38badc256c173f003e4da2a70c6c84fabbcb80bee2e4dca9db2b819954e1db5"`
[INFO] running `"docker" "rm" "-f" "c38badc256c173f003e4da2a70c6c84fabbcb80bee2e4dca9db2b819954e1db5"`
[INFO] [stdout] c38badc256c173f003e4da2a70c6c84fabbcb80bee2e4dca9db2b819954e1db5
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-1/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "test" "--frozen"`
[INFO] [stdout] 87bee23cb2eb2b11c4b0afef6b81d32bb1bffe8d1c71598ecb8047b41e8c1f7d
[INFO] running `"docker" "start" "-a" "87bee23cb2eb2b11c4b0afef6b81d32bb1bffe8d1c71598ecb8047b41e8c1f7d"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/erosion-44b66093afacfe30
[INFO] [stdout] 
[INFO] [stdout] running 10 tests
[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::achieved_throughput_returns_rounded_throughput ... 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_index_is_outside_remainder_interval ... 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::should_add_event_from_remainder_returns_false_when_no_remainder ... ok
[INFO] [stdout] test throughput::tests::sleep_if_too_fast_returns_false_if_duration_zero ... ok
[INFO] [stdout] test throughput::tests::to_millis_converts_duration_to_integer ... ok
[INFO] [stdout] test throughput::tests::sleep_if_too_fast_returns_true_if_duration_not_zero ... 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/rustwide/target/debug/deps/mono_thread_inttest-da518efb3a744c7d
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test throughput_generator_calls_event_function_thousands_times_a_sec ... ok
[INFO] [stdout] test throughput_generator_calls_event_function_once_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] test throughput_generator_calls_event_function_three_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" "87bee23cb2eb2b11c4b0afef6b81d32bb1bffe8d1c71598ecb8047b41e8c1f7d"`
[INFO] running `"docker" "rm" "-f" "87bee23cb2eb2b11c4b0afef6b81d32bb1bffe8d1c71598ecb8047b41e8c1f7d"`
[INFO] [stdout] 87bee23cb2eb2b11c4b0afef6b81d32bb1bffe8d1c71598ecb8047b41e8c1f7d