[INFO] fetching crate loopers-engine 0.1.0...
[INFO] testing loopers-engine-0.1.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate loopers-engine 0.1.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate loopers-engine 0.1.0 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate loopers-engine 0.1.0
[INFO] finished tweaking crates.io crate loopers-engine 0.1.0
[INFO] tweaked toml for crates.io crate loopers-engine 0.1.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d5988ba2c6e76b22ff32e1e42fd28624315c0dbb8990c31ea188952cdc86b755
[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" "d5988ba2c6e76b22ff32e1e42fd28624315c0dbb8990c31ea188952cdc86b755", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d5988ba2c6e76b22ff32e1e42fd28624315c0dbb8990c31ea188952cdc86b755", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d5988ba2c6e76b22ff32e1e42fd28624315c0dbb8990c31ea188952cdc86b755", kill_on_drop: false }`
[INFO] [stdout] d5988ba2c6e76b22ff32e1e42fd28624315c0dbb8990c31ea188952cdc86b755
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ce6d4530dbd4ab6617ac2edca37009c0c0e1e633d3bff9e124ce13ca631d2808
[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" "ce6d4530dbd4ab6617ac2edca37009c0c0e1e633d3bff9e124ce13ca631d2808", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.118
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling hound v3.4.0
[INFO] [stderr]    Compiling regex-automata v0.1.9
[INFO] [stderr]    Compiling dirs-sys v0.3.5
[INFO] [stderr]    Compiling serde_derive v1.0.118
[INFO] [stderr]    Compiling derive_more v0.99.11
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling dirs v2.0.2
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling csv-core v0.1.10
[INFO] [stderr]    Compiling bstr v0.2.14
[INFO] [stderr]    Compiling serde_json v1.0.61
[INFO] [stderr]    Compiling toml v0.5.8
[INFO] [stderr]    Compiling csv v1.1.5
[INFO] [stderr]    Compiling loopers-common v0.1.0
[INFO] [stderr]    Compiling loopers-engine v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 52.27s
[INFO] running `Command { std: "docker" "inspect" "ce6d4530dbd4ab6617ac2edca37009c0c0e1e633d3bff9e124ce13ca631d2808", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ce6d4530dbd4ab6617ac2edca37009c0c0e1e633d3bff9e124ce13ca631d2808", kill_on_drop: false }`
[INFO] [stdout] ce6d4530dbd4ab6617ac2edca37009c0c0e1e633d3bff9e124ce13ca631d2808
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+1.49.0" "test" "--frozen" "--no-run" "--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] cd8c983cb490dafd5b65f7313d0df361d38ecfc5b7354aec62ea320ce25d370b
[INFO] running `Command { std: "docker" "start" "-a" "cd8c983cb490dafd5b65f7313d0df361d38ecfc5b7354aec62ea320ce25d370b", kill_on_drop: false }`
[INFO] [stderr]    Compiling bit-vec v0.6.3
[INFO] [stderr]    Compiling regex v1.4.2
[INFO] [stderr]    Compiling wait-timeout v0.2.0
[INFO] [stderr]    Compiling fern v0.6.0
[INFO] [stderr]    Compiling rand_xorshift v0.2.0
[INFO] [stderr]    Compiling serde_cbor v0.11.1
[INFO] [stderr]    Compiling tinytemplate v1.2.0
[INFO] [stderr]    Compiling rusty-fork v0.3.0
[INFO] [stderr]    Compiling bit-set v0.5.2
[INFO] [stderr]    Compiling proptest v0.10.1
[INFO] [stderr]    Compiling criterion v0.3.3
[INFO] [stderr]    Compiling loopers-engine v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 41.32s
[INFO] running `Command { std: "docker" "inspect" "cd8c983cb490dafd5b65f7313d0df361d38ecfc5b7354aec62ea320ce25d370b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cd8c983cb490dafd5b65f7313d0df361d38ecfc5b7354aec62ea320ce25d370b", kill_on_drop: false }`
[INFO] [stdout] cd8c983cb490dafd5b65f7313d0df361d38ecfc5b7354aec62ea320ce25d370b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] d2dcabc6f63d3771f7ec57e876a0194b08716da7a9d61087086a06aea255c955
[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" "d2dcabc6f63d3771f7ec57e876a0194b08716da7a9d61087086a06aea255c955", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.26s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/loopers_engine-90930793aedd822b
[INFO] [stdout] 
[INFO] [stdout] running 18 tests
[INFO] [stdout] test sample::tests::test_from_mono ... ok
[INFO] [stdout] test sample::tests::test_record ... ok
[INFO] [stdout] test looper::tests::test_transfer_buf ... ok
[INFO] [stdout] test sample::tests::test_xfade ... ok
[INFO] [stdout] test trigger::tests::test_beat_trigger ... ok
[INFO] [stdout] test trigger::tests::test_measure_trigger ... ok
[INFO] [stdout] test sample::tests::test_new ... ok
[INFO] [stdout] test sample::tests::test_overdub ... ok
[INFO] [stdout] test metronome::tests::test_cycle ... ok
[INFO] [stdout] test looper::tests::test_new ... ok
[INFO] [stdout] test looper::tests::test_io ... ok
[INFO] [stdout] test looper::tests::test_transitions ... ok
[INFO] [stdout] test looper::tests::test_non_harmonious_lengths ... ok
[INFO] [stdout] test looper::tests::test_overdub ... ok
[INFO] [stdout] test looper::tests::test_serialization ... ok
[INFO] [stdout] test looper::tests::test_pre_xfade ... ok
[INFO] [stdout] test looper::tests::test_post_xfade ... ok
[INFO] [stdout] test trigger::tests::test_measure_trigger_prop ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 18 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests loopers-engine
[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 `Command { std: "docker" "inspect" "d2dcabc6f63d3771f7ec57e876a0194b08716da7a9d61087086a06aea255c955", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d2dcabc6f63d3771f7ec57e876a0194b08716da7a9d61087086a06aea255c955", kill_on_drop: false }`
[INFO] [stdout] d2dcabc6f63d3771f7ec57e876a0194b08716da7a9d61087086a06aea255c955