[INFO] updating cached repository https://github.com/bschwind/mqtt-broker
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] [stderr] From https://github.com/bschwind/mqtt-broker
[INFO] [stderr]    23edd50..3bc9acc  topic-filters -> topic-filters
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 0aff95bd936b0b880abd1f798c3c80d42da0f347
[INFO] checking bschwind/mqtt-broker against try#e60d9e09c55855f5a848fde8ad83e13131a5b241 for pr-68350
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbschwind%2Fmqtt-broker" "/workspace/builds/worker-14/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/bschwind/mqtt-broker on toolchain e60d9e09c55855f5a848fde8ad83e13131a5b241
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e60d9e09c55855f5a848fde8ad83e13131a5b241" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/bschwind/mqtt-broker
[INFO] finished tweaking git repo https://github.com/bschwind/mqtt-broker
[INFO] tweaked toml for git repo https://github.com/bschwind/mqtt-broker written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/bschwind/mqtt-broker already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e60d9e09c55855f5a848fde8ad83e13131a5b241" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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=forbid" "-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" "/opt/rustwide/cargo-home/bin/cargo" "+e60d9e09c55855f5a848fde8ad83e13131a5b241" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 21aaccc7d28266fe902a4e9efef2537a594c6423489c6fb815617f7603fddaa3
[INFO] running `"docker" "start" "-a" "21aaccc7d28266fe902a4e9efef2537a594c6423489c6fb815617f7603fddaa3"`
[INFO] [stderr]    Compiling proc-macro2 v1.0.7
[INFO] [stderr]    Compiling toml v0.5.5
[INFO] [stderr]    Compiling derivative v1.0.3
[INFO] [stderr]     Checking tokio v0.2.6
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling syn v1.0.13
[INFO] [stderr]    Compiling proc-macro-crate v0.1.4
[INFO] [stderr]     Checking tokio-util v0.2.0
[INFO] [stderr]    Compiling proc-macro-hack v0.5.11
[INFO] [stderr]    Compiling num_enum_derive v0.4.2
[INFO] [stderr]    Compiling futures-macro v0.3.1
[INFO] [stderr]     Checking num_enum v0.4.2
[INFO] [stderr]     Checking futures-util v0.3.1
[INFO] [stderr]     Checking futures-executor v0.3.1
[INFO] [stderr]     Checking futures v0.3.1
[INFO] [stderr]     Checking mqtt-broker v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `sender`
[INFO] [stderr]    --> src/broker.rs:139:13
[INFO] [stderr]     |
[INFO] [stderr] 139 |         let sender = broker.sender();
[INFO] [stderr]     |             ^^^^^^ help: consider prefixing with an underscore: `_sender`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Publish`
[INFO] [stderr]   --> src/broker.rs:32:5
[INFO] [stderr]    |
[INFO] [stderr] 32 |     Publish,
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Disconnect`
[INFO] [stderr]   --> src/broker.rs:34:5
[INFO] [stderr]    |
[INFO] [stderr] 34 |     Disconnect(String),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `protocol_version`
[INFO] [stderr]   --> src/client.rs:82:5
[INFO] [stderr]    |
[INFO] [stderr] 82 |     protocol_version: ProtocolVersion,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Publish`
[INFO] [stderr]   --> src/broker.rs:32:5
[INFO] [stderr]    |
[INFO] [stderr] 32 |     Publish,
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Disconnect`
[INFO] [stderr]   --> src/broker.rs:34:5
[INFO] [stderr]    |
[INFO] [stderr] 34 |     Disconnect(String),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `property_type`
[INFO] [stderr]    --> src/types.rs:491:9
[INFO] [stderr]     |
[INFO] [stderr] 491 |         pub fn property_type(&self) -> PropertyType {
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `protocol_version`
[INFO] [stderr]   --> src/client.rs:82:5
[INFO] [stderr]    |
[INFO] [stderr] 82 |     protocol_version: ProtocolVersion,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `property_type`
[INFO] [stderr]    --> src/types.rs:491:9
[INFO] [stderr]     |
[INFO] [stderr] 491 |         pub fn property_type(&self) -> PropertyType {
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 49.04s
[INFO] running `"docker" "inspect" "21aaccc7d28266fe902a4e9efef2537a594c6423489c6fb815617f7603fddaa3"`
[INFO] running `"docker" "rm" "-f" "21aaccc7d28266fe902a4e9efef2537a594c6423489c6fb815617f7603fddaa3"`
[INFO] [stdout] 21aaccc7d28266fe902a4e9efef2537a594c6423489c6fb815617f7603fddaa3