[INFO] fetching crate tokio-cadence 0.3.0...
[INFO] testing tokio-cadence-0.3.0 against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] extracting crate tokio-cadence 0.3.0 into /workspace/builds/worker-118/source
[INFO] validating manifest of crates.io crate tokio-cadence 0.3.0 on toolchain a77da2d454e6caa227a85b16410b95f93495e7e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tokio-cadence 0.3.0
[INFO] finished tweaking crates.io crate tokio-cadence 0.3.0
[INFO] tweaked toml for crates.io crate tokio-cadence 0.3.0 written to /workspace/builds/worker-118/source/Cargo.toml
[INFO] crate crates.io crate tokio-cadence 0.3.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "fetch" "--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-118/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-118/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8e3ac94212f13ef3f653c8058dd3d8f68da7640c88447ea5d588ee63b289c0d7
[INFO] running `Command { std: "docker" "start" "-a" "8e3ac94212f13ef3f653c8058dd3d8f68da7640c88447ea5d588ee63b289c0d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8e3ac94212f13ef3f653c8058dd3d8f68da7640c88447ea5d588ee63b289c0d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8e3ac94212f13ef3f653c8058dd3d8f68da7640c88447ea5d588ee63b289c0d7", kill_on_drop: false }`
[INFO] [stdout] 8e3ac94212f13ef3f653c8058dd3d8f68da7640c88447ea5d588ee63b289c0d7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-118/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-118/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=forbid" "-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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2c3b2f61143f4029a75441a399556ce0e66c67d1b52c1c1486e38737e334630d
[INFO] running `Command { std: "docker" "start" "-a" "2c3b2f61143f4029a75441a399556ce0e66c67d1b52c1c1486e38737e334630d", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling libc v0.2.79
[INFO] [stderr]    Compiling syn v1.0.48
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling pin-project-lite v0.2.4
[INFO] [stderr]    Compiling crossbeam-utils v0.8.1
[INFO] [stderr]    Compiling tokio v1.2.0
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling mio v0.7.7
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling crossbeam-channel v0.5.0
[INFO] [stderr]    Compiling cadence v0.24.0
[INFO] [stderr]    Compiling tokio-macros v1.1.0
[INFO] [stderr]    Compiling tokio-cadence v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.24s
[INFO] running `Command { std: "docker" "inspect" "2c3b2f61143f4029a75441a399556ce0e66c67d1b52c1c1486e38737e334630d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2c3b2f61143f4029a75441a399556ce0e66c67d1b52c1c1486e38737e334630d", kill_on_drop: false }`
[INFO] [stdout] 2c3b2f61143f4029a75441a399556ce0e66c67d1b52c1c1486e38737e334630d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-118/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-118/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=forbid" "-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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 17522495b3576f4074aabbeec4ebe4e017154139894f17ad97accc097dae70a2
[INFO] running `Command { std: "docker" "start" "-a" "17522495b3576f4074aabbeec4ebe4e017154139894f17ad97accc097dae70a2", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling quick-error v1.2.3
[INFO] [stderr]    Compiling regex-syntax v0.6.20
[INFO] [stderr]    Compiling termcolor v1.1.0
[INFO] [stderr]    Compiling thread_local v1.0.1
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling humantime v1.3.0
[INFO] [stderr]    Compiling aho-corasick v0.7.14
[INFO] [stderr]    Compiling regex v1.4.1
[INFO] [stderr]    Compiling env_logger v0.7.1
[INFO] [stderr]    Compiling pretty_env_logger v0.4.0
[INFO] [stderr]    Compiling tokio-cadence v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> examples/async_impl.rs:75:17
[INFO] [stdout]    |
[INFO] [stdout] 75 | /                 &buf[..n]
[INFO] [stdout] 76 | |                     .lines()
[INFO] [stdout] 77 | |                     .filter_map(|line| {
[INFO] [stdout] 78 | |                         line.ok().and_then(|line| {
[INFO] [stdout] ...  |
[INFO] [stdout] 97 | |                         }
[INFO] [stdout] 98 | |                     });
[INFO] [stdout]    | |______________________^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 75 |                 let _ = &buf[..n]
[INFO] [stdout]    |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 13.36s
[INFO] running `Command { std: "docker" "inspect" "17522495b3576f4074aabbeec4ebe4e017154139894f17ad97accc097dae70a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "17522495b3576f4074aabbeec4ebe4e017154139894f17ad97accc097dae70a2", kill_on_drop: false }`
[INFO] [stdout] 17522495b3576f4074aabbeec4ebe4e017154139894f17ad97accc097dae70a2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-118/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-118/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=forbid" "-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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 3768f326681768420d730fb8b7ae82f8bd18e70039d41c6a39335fb7cabaf442
[INFO] running `Command { std: "docker" "start" "-a" "3768f326681768420d730fb8b7ae82f8bd18e70039d41c6a39335fb7cabaf442", kill_on_drop: false }`
[INFO] [stderr] warning: unused borrow that must be used
[INFO] [stderr]   --> examples/async_impl.rs:75:17
[INFO] [stderr]    |
[INFO] [stderr] 75 | /                 &buf[..n]
[INFO] [stderr] 76 | |                     .lines()
[INFO] [stderr] 77 | |                     .filter_map(|line| {
[INFO] [stderr] 78 | |                         line.ok().and_then(|line| {
[INFO] [stderr] ...  |
[INFO] [stderr] 97 | |                         }
[INFO] [stderr] 98 | |                     });
[INFO] [stderr]    | |______________________^ the borrow produces a value
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 75 |                 let _ = &buf[..n]
[INFO] [stderr]    |                 +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `tokio-cadence` (example "async_impl") generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/tokio_cadence-1036361ef60d1f75)
[INFO] [stdout] 
[INFO] [stdout] running 11 tests
[INFO] [stdout] test udp::tests::from ... ok
[INFO] [stdout] test udp::tests::from_bad_address ... ok
[INFO] [stdout] test unix::tests::from ... ok
[INFO] [stdout] test worker::tests::handle_full_buffer ... ok
[INFO] [stdout] test worker::tests::handle_multi_item ... ok
[INFO] [stdout] test worker::tests::handle_over_buffer_capacity ... ok
[INFO] [stdout] test worker::tests::handle_single_item ... ok
[INFO] [stdout] test udp::tests::emit ... ok
[INFO] [stdout] test udp::tests::emit_multi ... ok
[INFO] [stdout] test unix::tests::emit ... ok
[INFO] [stdout] test unix::tests::emit_multi ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 11 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.02s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests tokio-cadence
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/unix.rs - unix::TokioBatchUnixMetricSink (line 67) - compile ... ok
[INFO] [stdout] test src/udp.rs - udp::TokioBatchUdpMetricSink (line 72) - compile ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.18s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "3768f326681768420d730fb8b7ae82f8bd18e70039d41c6a39335fb7cabaf442", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3768f326681768420d730fb8b7ae82f8bd18e70039d41c6a39335fb7cabaf442", kill_on_drop: false }`
[INFO] [stdout] 3768f326681768420d730fb8b7ae82f8bd18e70039d41c6a39335fb7cabaf442