[INFO] fetching crate futures-backoff 0.1.0...
[INFO] testing futures-backoff-0.1.0 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate futures-backoff 0.1.0 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate futures-backoff 0.1.0 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 futures-backoff 0.1.0
[INFO] finished tweaking crates.io crate futures-backoff 0.1.0
[INFO] tweaked toml for crates.io crate futures-backoff 0.1.0 written to /workspace/builds/worker-3/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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] eb4178e948a455f1aa0e00a5d56863b5d9aa1f763381dc77a8c0365aecba19f9
[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" "eb4178e948a455f1aa0e00a5d56863b5d9aa1f763381dc77a8c0365aecba19f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "eb4178e948a455f1aa0e00a5d56863b5d9aa1f763381dc77a8c0365aecba19f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb4178e948a455f1aa0e00a5d56863b5d9aa1f763381dc77a8c0365aecba19f9", kill_on_drop: false }`
[INFO] [stdout] eb4178e948a455f1aa0e00a5d56863b5d9aa1f763381dc77a8c0365aecba19f9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 64b3d74d8b227ba1c74de9e494aca478a2d3aa90ebcee8f00ff11901aea5c760
[INFO] running `Command { std: "docker" "start" "-a" "64b3d74d8b227ba1c74de9e494aca478a2d3aa90ebcee8f00ff11901aea5c760", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]    Compiling futures v0.1.30
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling futures-timer v0.1.1
[INFO] [stderr]    Compiling futures-backoff v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.78s
[INFO] running `Command { std: "docker" "inspect" "64b3d74d8b227ba1c74de9e494aca478a2d3aa90ebcee8f00ff11901aea5c760", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "64b3d74d8b227ba1c74de9e494aca478a2d3aa90ebcee8f00ff11901aea5c760", kill_on_drop: false }`
[INFO] [stdout] 64b3d74d8b227ba1c74de9e494aca478a2d3aa90ebcee8f00ff11901aea5c760
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2bacd36c7e8d204203e8ccd4173a9652b352df2349895e9b09ff972926b2eb75
[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" "2bacd36c7e8d204203e8ccd4173a9652b352df2349895e9b09ff972926b2eb75", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling regex-syntax v0.6.21
[INFO] [stderr]    Compiling quick-error v1.2.3
[INFO] [stderr]    Compiling termcolor v1.1.2
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling thread_local v1.0.1
[INFO] [stderr]    Compiling humantime v1.3.0
[INFO] [stderr]    Compiling aho-corasick v0.7.15
[INFO] [stderr]    Compiling regex v1.4.2
[INFO] [stderr]    Compiling env_logger v0.5.13
[INFO] [stderr]    Compiling quickcheck v0.6.2
[INFO] [stderr]    Compiling futures-backoff v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 22.43s
[INFO] running `Command { std: "docker" "inspect" "2bacd36c7e8d204203e8ccd4173a9652b352df2349895e9b09ff972926b2eb75", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2bacd36c7e8d204203e8ccd4173a9652b352df2349895e9b09ff972926b2eb75", kill_on_drop: false }`
[INFO] [stdout] 2bacd36c7e8d204203e8ccd4173a9652b352df2349895e9b09ff972926b2eb75
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 14bb9326f06d37cef89740aff52616fcd29eda655704bc5472985c75f8cba1bd
[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" "14bb9326f06d37cef89740aff52616fcd29eda655704bc5472985c75f8cba1bd", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/futures_backoff-58d8d7f1c386812e
[INFO] [stdout] running 13 tests
[INFO] [stdout] test strategy::exponential_returns_max_when_max_less_than_base ... ok
[INFO] [stdout] test strategy::fixed_returns_delay ... ok
[INFO] [stdout] test strategy::fibonacci_stops_increasing_at_max_delay ... ok
[INFO] [stdout] test strategy::exponential_stops_increasing_at_max_delay ... ok
[INFO] [stdout] test strategy::jitter::apply_jitter_quickcheck ... ok
[INFO] [stdout] test strategy::exponential_returns_multiples_of_100ms ... ok
[INFO] [stdout] test strategy::fibonacci_returns_max_when_max_less_than_base ... ok
[INFO] [stdout] test future::tests::attempts_just_once ... ok
[INFO] [stdout] test strategy::exponential_returns_multiples_of_10ms ... ok
[INFO] [stdout] test strategy::fibonacci_returns_the_fibonacci_series_starting_at_10 ... ok
[INFO] [stdout] test future::tests::attempts_until_max_retries_exceeded ... ok
[INFO] [stdout] test future::tests::attempts_retry_only_if_given_condition_is_true ... ok
[INFO] [stderr]    Doc-tests futures-backoff
[INFO] [stdout] test future::tests::attempts_until_success ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 13 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.32s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test src/lib.rs - retry (line 60) ... ok
[INFO] [stdout] test src/strategy/mod.rs - strategy::Strategy (line 29) ... ok
[INFO] [stdout] test src/lib.rs - retry_if (line 87) ... ok
[INFO] [stdout] test src/lib.rs - (line 19) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.54s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "14bb9326f06d37cef89740aff52616fcd29eda655704bc5472985c75f8cba1bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "14bb9326f06d37cef89740aff52616fcd29eda655704bc5472985c75f8cba1bd", kill_on_drop: false }`
[INFO] [stdout] 14bb9326f06d37cef89740aff52616fcd29eda655704bc5472985c75f8cba1bd