[INFO] fetching crate mqtt-codec 0.3.0...
[INFO] testing mqtt-codec-0.3.0 against beta-2020-07-24 for beta-1.46-1
[INFO] extracting crate mqtt-codec 0.3.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate mqtt-codec 0.3.0 on toolchain beta-2020-07-24
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mqtt-codec 0.3.0
[INFO] finished tweaking crates.io crate mqtt-codec 0.3.0
[INFO] tweaked toml for crates.io crate mqtt-codec 0.3.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "metadata" "--no-deps" "--format-version=1", 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] 84825f03f5d638cb3115c3ab1b3bbea6153242e70d6fa25cf8cbf31b71996f6d
[INFO] running `Command { std: "docker" "start" "-a" "84825f03f5d638cb3115c3ab1b3bbea6153242e70d6fa25cf8cbf31b71996f6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "84825f03f5d638cb3115c3ab1b3bbea6153242e70d6fa25cf8cbf31b71996f6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "84825f03f5d638cb3115c3ab1b3bbea6153242e70d6fa25cf8cbf31b71996f6d", kill_on_drop: false }`
[INFO] [stdout] 84825f03f5d638cb3115c3ab1b3bbea6153242e70d6fa25cf8cbf31b71996f6d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "MAP_USER_ID=0" "-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@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 764e421a6d9f6ecb983ffd161b2a64989391acaa4ecba29e87c7bcfa0fbdee3e
[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" "764e421a6d9f6ecb983ffd161b2a64989391acaa4ecba29e87c7bcfa0fbdee3e", kill_on_drop: false }`
[INFO] [stderr]    Compiling bytes v0.5.6
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling pin-project-lite v0.1.7
[INFO] [stderr]    Compiling futures-sink v0.3.5
[INFO] [stderr]    Compiling futures-core v0.3.5
[INFO] [stderr]    Compiling tokio v0.2.22
[INFO] [stderr]    Compiling bytestring v0.1.5
[INFO] [stderr]    Compiling tokio-util v0.2.0
[INFO] [stderr]    Compiling actix-codec v0.2.0
[INFO] [stderr]    Compiling mqtt-codec v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `bytes::BytesMut::split_to` that must be used
[INFO] [stdout]   --> src/codec/mod.rs:90:29
[INFO] [stdout]    |
[INFO] [stdout] 90 | ...                   src.split_to(consumed + 1);
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: consider BytesMut::advance if you don't need the other half
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.21s
[INFO] running `Command { std: "docker" "inspect" "764e421a6d9f6ecb983ffd161b2a64989391acaa4ecba29e87c7bcfa0fbdee3e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "764e421a6d9f6ecb983ffd161b2a64989391acaa4ecba29e87c7bcfa0fbdee3e", kill_on_drop: false }`
[INFO] [stdout] 764e421a6d9f6ecb983ffd161b2a64989391acaa4ecba29e87c7bcfa0fbdee3e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "MAP_USER_ID=0" "-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@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cdc8d60b9e166d40b4101732c418f0ad0fff646864aef8ec7163251b88b83ae9
[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" "cdc8d60b9e166d40b4101732c418f0ad0fff646864aef8ec7163251b88b83ae9", kill_on_drop: false }`
[INFO] [stderr]    Compiling mqtt-codec v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `bytes::BytesMut::split_to` that must be used
[INFO] [stdout]   --> src/codec/mod.rs:90:29
[INFO] [stdout]    |
[INFO] [stdout] 90 | ...                   src.split_to(consumed + 1);
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: consider BytesMut::advance if you don't need the other half
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `bytes::BytesMut::split_to` that must be used
[INFO] [stdout]   --> src/codec/mod.rs:90:29
[INFO] [stdout]    |
[INFO] [stdout] 90 | ...                   src.split_to(consumed + 1);
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: consider BytesMut::advance if you don't need the other half
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.06s
[INFO] running `Command { std: "docker" "inspect" "cdc8d60b9e166d40b4101732c418f0ad0fff646864aef8ec7163251b88b83ae9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cdc8d60b9e166d40b4101732c418f0ad0fff646864aef8ec7163251b88b83ae9", kill_on_drop: false }`
[INFO] [stdout] cdc8d60b9e166d40b4101732c418f0ad0fff646864aef8ec7163251b88b83ae9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "MAP_USER_ID=0" "-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@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 630e9fb78bbdcbe576f581a2ad5d3923da5623b1d1fd89da32e73d2ba373465c
[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" "630e9fb78bbdcbe576f581a2ad5d3923da5623b1d1fd89da32e73d2ba373465c", kill_on_drop: false }`
[INFO] [stderr] warning: unused return value of `bytes::BytesMut::split_to` that must be used
[INFO] [stderr]   --> src/codec/mod.rs:90:29
[INFO] [stderr]    |
[INFO] [stderr] 90 | ...                   src.split_to(consumed + 1);
[INFO] [stderr]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: consider BytesMut::advance if you don't need the other half
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `bytes::BytesMut::split_to` that must be used
[INFO] [stderr]   --> src/codec/mod.rs:90:29
[INFO] [stderr]    |
[INFO] [stderr] 90 | ...                   src.split_to(consumed + 1);
[INFO] [stderr]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: consider BytesMut::advance if you don't need the other half
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/mqtt_codec-2c216388f6c48503
[INFO] [stdout] 
[INFO] [stdout] running 19 tests
[INFO] [stdout] test codec::decode::tests::test_decode_variable_length ... ok
[INFO] [stdout] test codec::encode::tests::test_encode_connect_packets ... ok
[INFO] [stdout] test codec::decode::tests::test_decode_ping_packets ... ok
[INFO] [stdout] test codec::encode::tests::test_encode_ping_packets ... ok
[INFO] [stdout] test topic::tests::test_level ... ok
[INFO] [stdout] test topic::tests::test_match_topic ... ok
[INFO] [stdout] test topic::tests::test_write_topic ... ok
[INFO] [stdout] test topic::tests::test_valid_topic ... ok
[INFO] [stdout] test topic::tests::test_parse_topic ... ok
[INFO] [stdout] test codec::encode::tests::test_encode_fixed_header ... ok
[INFO] [stdout] test topic::tests::test_single_wildcard_topic ... ok
[INFO] [stdout] test codec::decode::tests::test_decode_publish_packets ... ok
[INFO] [stdout] test codec::decode::tests::test_decode_subscribe_packets ... ok
[INFO] [stdout] test codec::decode::tests::test_decode_connect_packets ... ok
[INFO] [stdout] test codec::tests::test_max_size ... ok
[INFO] [stdout] test codec::encode::tests::test_encode_publish_packets ... ok
[INFO] [stdout] test codec::encode::tests::test_encode_variable_length ... ok
[INFO] [stdout] test codec::encode::tests::test_encode_subscribe_packets ... ok
[INFO] [stdout] test topic::tests::test_multi_wildcard_topic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 19 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests mqtt-codec
[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" "630e9fb78bbdcbe576f581a2ad5d3923da5623b1d1fd89da32e73d2ba373465c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "630e9fb78bbdcbe576f581a2ad5d3923da5623b1d1fd89da32e73d2ba373465c", kill_on_drop: false }`
[INFO] [stdout] 630e9fb78bbdcbe576f581a2ad5d3923da5623b1d1fd89da32e73d2ba373465c