[INFO] cloning repository https://github.com/bruno319/sync-mqtt-client
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bruno319/sync-mqtt-client" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbruno319%2Fsync-mqtt-client", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbruno319%2Fsync-mqtt-client'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] df030801652162296dbc37561ec15e18a014dfcc
[INFO] testing bruno319/sync-mqtt-client against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbruno319%2Fsync-mqtt-client" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/bruno319/sync-mqtt-client on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/bruno319/sync-mqtt-client
[INFO] finished tweaking git repo https://github.com/bruno319/sync-mqtt-client
[INFO] tweaked toml for git repo https://github.com/bruno319/sync-mqtt-client written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/bruno319/sync-mqtt-client already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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-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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c21d159180122442caf1bbf414428bbcfb4cd3fc8a614c10f21ca35815b7dbd2
[INFO] running `Command { std: "docker" "start" "-a" "c21d159180122442caf1bbf414428bbcfb4cd3fc8a614c10f21ca35815b7dbd2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c21d159180122442caf1bbf414428bbcfb4cd3fc8a614c10f21ca35815b7dbd2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c21d159180122442caf1bbf414428bbcfb4cd3fc8a614c10f21ca35815b7dbd2", kill_on_drop: false }`
[INFO] [stdout] c21d159180122442caf1bbf414428bbcfb4cd3fc8a614c10f21ca35815b7dbd2
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 73b1676c3022e3fff3aa8d7f9804301cc92abeb9a8aeb6a371ae4a7841eaf196
[INFO] running `Command { std: "docker" "start" "-a" "73b1676c3022e3fff3aa8d7f9804301cc92abeb9a8aeb6a371ae4a7841eaf196", kill_on_drop: false }`
[INFO] [stderr]    Compiling object v0.19.0
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling termcolor v1.1.0
[INFO] [stderr]    Compiling bindgen v0.50.1
[INFO] [stderr]    Compiling syn v1.0.31
[INFO] [stderr]    Compiling addr2line v0.12.1
[INFO] [stderr]    Compiling clang-sys v0.28.1
[INFO] [stderr]    Compiling nom v4.2.3
[INFO] [stderr]    Compiling libloading v0.5.2
[INFO] [stderr]    Compiling humantime v1.3.0
[INFO] [stderr]    Compiling futures-timer v0.1.1
[INFO] [stderr]    Compiling parking_lot_core v0.7.2
[INFO] [stderr]    Compiling fs2 v0.4.3
[INFO] [stderr]    Compiling regex v1.3.9
[INFO] [stderr]    Compiling parking_lot v0.10.2
[INFO] [stderr]    Compiling env_logger v0.6.2
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling cexpr v0.3.6
[INFO] [stderr]    Compiling backtrace v0.3.48
[INFO] [stderr]    Compiling failure v0.1.8
[INFO] [stderr]    Compiling sled v0.32.0-rc1
[INFO] [stderr]    Compiling which v2.0.1
[INFO] [stderr]    Compiling num-derive v0.3.0
[INFO] [stderr]    Compiling paho-mqtt-sys v0.2.1 (https://github.com/eclipse/paho.mqtt.rust.git?rev=f92e43a9e252cf0fe552c5420eb41005e454140a#f92e43a9)
[INFO] [stderr]    Compiling paho-mqtt v0.7.0 (https://github.com/eclipse/paho.mqtt.rust.git?rev=f92e43a9e252cf0fe552c5420eb41005e454140a#f92e43a9)
[INFO] [stderr]    Compiling queue-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/queue.rs:44:9
[INFO] [stdout]    |
[INFO] [stdout] 44 |         self.storage.clear();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 04s
[INFO] running `Command { std: "docker" "inspect" "73b1676c3022e3fff3aa8d7f9804301cc92abeb9a8aeb6a371ae4a7841eaf196", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "73b1676c3022e3fff3aa8d7f9804301cc92abeb9a8aeb6a371ae4a7841eaf196", kill_on_drop: false }`
[INFO] [stdout] 73b1676c3022e3fff3aa8d7f9804301cc92abeb9a8aeb6a371ae4a7841eaf196
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e97cbde739fddf85281679fd27e29f9f30b7ec4755e3cb207a73becbf0c460a5
[INFO] running `Command { std: "docker" "start" "-a" "e97cbde739fddf85281679fd27e29f9f30b7ec4755e3cb207a73becbf0c460a5", kill_on_drop: false }`
[INFO] [stderr]    Compiling queue-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/queue.rs:44:9
[INFO] [stdout]    |
[INFO] [stdout] 44 |         self.storage.clear();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.85s
[INFO] running `Command { std: "docker" "inspect" "e97cbde739fddf85281679fd27e29f9f30b7ec4755e3cb207a73becbf0c460a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e97cbde739fddf85281679fd27e29f9f30b7ec4755e3cb207a73becbf0c460a5", kill_on_drop: false }`
[INFO] [stdout] e97cbde739fddf85281679fd27e29f9f30b7ec4755e3cb207a73becbf0c460a5
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 650ffe92938b3c9a743c2d36dc944cffe1cebea224df85ffb33f376530bd2719
[INFO] running `Command { std: "docker" "start" "-a" "650ffe92938b3c9a743c2d36dc944cffe1cebea224df85ffb33f376530bd2719", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stdout] running 0 tests
[INFO] [stderr]   --> src/queue.rs:44:9
[INFO] [stdout] 
[INFO] [stderr]    |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] 44 |         self.storage.clear();
[INFO] [stdout] 
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: `queue-rust` (bin "queue-rust" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.09s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/queue_rust-bf82ff9c5df2fc62)
[INFO] running `Command { std: "docker" "inspect" "650ffe92938b3c9a743c2d36dc944cffe1cebea224df85ffb33f376530bd2719", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "650ffe92938b3c9a743c2d36dc944cffe1cebea224df85ffb33f376530bd2719", kill_on_drop: false }`
[INFO] [stdout] 650ffe92938b3c9a743c2d36dc944cffe1cebea224df85ffb33f376530bd2719