[INFO] fetching crate failsafe 1.0.0...
[INFO] testing failsafe-1.0.0 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate failsafe 1.0.0 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate failsafe 1.0.0 on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate failsafe 1.0.0
[INFO] finished tweaking crates.io crate failsafe 1.0.0
[INFO] tweaked toml for crates.io crate failsafe 1.0.0 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2454121fc37a23009bec634385654b429a5e911f0715ecd539f506c1f240d6a2
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "2454121fc37a23009bec634385654b429a5e911f0715ecd539f506c1f240d6a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2454121fc37a23009bec634385654b429a5e911f0715ecd539f506c1f240d6a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2454121fc37a23009bec634385654b429a5e911f0715ecd539f506c1f240d6a2", kill_on_drop: false }`
[INFO] [stdout] 2454121fc37a23009bec634385654b429a5e911f0715ecd539f506c1f240d6a2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d986d9b5b7637ff9de0d7d5ba523640d9ad130912aa8800eab013eda7dbd60a3
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "d986d9b5b7637ff9de0d7d5ba523640d9ad130912aa8800eab013eda7dbd60a3", kill_on_drop: false }`
[INFO] [stderr]    Compiling failsafe v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.32s
[INFO] running `Command { std: "docker" "inspect" "d986d9b5b7637ff9de0d7d5ba523640d9ad130912aa8800eab013eda7dbd60a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d986d9b5b7637ff9de0d7d5ba523640d9ad130912aa8800eab013eda7dbd60a3", kill_on_drop: false }`
[INFO] [stdout] d986d9b5b7637ff9de0d7d5ba523640d9ad130912aa8800eab013eda7dbd60a3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9a5fae11f8085da2d1ffa9c16d819c3f15be78fb4ac470f4cb52d7bc163d56a4
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "9a5fae11f8085da2d1ffa9c16d819c3f15be78fb4ac470f4cb52d7bc163d56a4", kill_on_drop: false }`
[INFO] [stderr]    Compiling tokio v0.2.24
[INFO] [stderr]    Compiling futures-util v0.3.8
[INFO] [stderr]    Compiling criterion v0.3.3
[INFO] [stderr]    Compiling futures-executor v0.3.8
[INFO] [stderr]    Compiling futures v0.3.8
[INFO] [stderr]    Compiling failsafe v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 13.10s
[INFO] running `Command { std: "docker" "inspect" "9a5fae11f8085da2d1ffa9c16d819c3f15be78fb4ac470f4cb52d7bc163d56a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9a5fae11f8085da2d1ffa9c16d819c3f15be78fb4ac470f4cb52d7bc163d56a4", kill_on_drop: false }`
[INFO] [stdout] 9a5fae11f8085da2d1ffa9c16d819c3f15be78fb4ac470f4cb52d7bc163d56a4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 8652a8c937cb832bfa24d367a321c4a5466d4531f9697e4ede1f1aa0084b1dc7
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "8652a8c937cb832bfa24d367a321c4a5466d4531f9697e4ede1f1aa0084b1dc7", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.11s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/failsafe-19b267454ce76299
[INFO] [stdout] 
[INFO] [stdout] running 30 tests
[INFO] [stdout] test backoff::tests::constant_growth ... ok
[INFO] [stdout] test backoff::tests::equal_jittered_growth ... ok
[INFO] [stdout] test backoff::tests::exponential_growth ... ok
[INFO] [stdout] test backoff::tests::full_jittered_growth ... ok
[INFO] [stdout] test circuit_breaker::tests::call_with ... ok
[INFO] [stdout] test circuit_breaker::tests::call_err ... ok
[INFO] [stdout] test circuit_breaker::tests::call_ok ... ok
[INFO] [stdout] test ema::tests::reset ... ok
[INFO] [stdout] test failure_policy::tests::consecutive_failures::fail_on_nth_attempt ... ok
[INFO] [stdout] test failure_policy::tests::consecutive_failures::reset_to_zero_on_success ... ok
[INFO] [stdout] test failure_policy::tests::consecutive_failures::iterates_over_backoff ... ok
[INFO] [stdout] test failure_policy::tests::or_else::compose_policies ... ok
[INFO] [stdout] test failure_policy::tests::consecutive_failures::reset_to_zero_on_revived ... ok
[INFO] [stdout] test ema::tests::compute ... ok
[INFO] [stdout] test ema::tests::updates_are_time_invariant ... ok
[INFO] [stdout] test failure_policy::tests::success_rate_over_time_window::fractional_success_rate ... ok
[INFO] [stdout] test failure_policy::tests::success_rate_over_time_window::respects_rps_threshold ... ok
[INFO] [stdout] test failure_predicate::tests::use_func_as_failure_predicate ... ok
[INFO] [stdout] test failure_policy::tests::success_rate_over_time_window::revived_resets_failures ... ok
[INFO] [stdout] test failure_policy::tests::success_rate_over_time_window::fail_when_success_rate_not_met ... ok
[INFO] [stdout] test windowed_adder::tests::negative_sums ... ok
[INFO] [stdout] test windowed_adder::tests::sliding_over_large_window ... ok
[INFO] [stdout] test futures::tests::call_err ... ok
[INFO] [stdout] test windowed_adder::tests::sum_when_time_stands_still ... ok
[INFO] [stdout] test state_machine::tests::state_machine ... ok
[INFO] [stdout] test futures::tests::call_with ... ok
[INFO] [stdout] test windowed_adder::tests::sliding_over_small_window ... ok
[INFO] [stdout] test windowed_adder::tests::sliding_window_when_slices_are_skipped ... ok
[INFO] [stdout] test ema::tests::non_monotonic_timestamp ... ok
[INFO] [stdout] test futures::tests::call_ok ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 30 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.16s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests failsafe
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test src/lib.rs - (line 49) ... ok
[INFO] [stdout] test src/futures/mod.rs - futures (line 7) ... ok
[INFO] [stdout] test src/lib.rs - (line 15) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.64s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "8652a8c937cb832bfa24d367a321c4a5466d4531f9697e4ede1f1aa0084b1dc7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8652a8c937cb832bfa24d367a321c4a5466d4531f9697e4ede1f1aa0084b1dc7", kill_on_drop: false }`
[INFO] [stdout] 8652a8c937cb832bfa24d367a321c4a5466d4531f9697e4ede1f1aa0084b1dc7