[INFO] fetching crate kik_sync_service 0.7.3...
[INFO] testing kik_sync_service-0.7.3 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate kik_sync_service 0.7.3 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate kik_sync_service 0.7.3
[INFO] finished tweaking crates.io crate kik_sync_service 0.7.3
[INFO] tweaked toml for crates.io crate kik_sync_service 0.7.3 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate kik_sync_service 0.7.3 on toolchain beta-2025-09-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7164c962075ff92b9fd67643692a8846275863e1ea40cbfe55cbcdc19c85490a
[INFO] running `Command { std: "docker" "start" "-a" "7164c962075ff92b9fd67643692a8846275863e1ea40cbfe55cbcdc19c85490a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7164c962075ff92b9fd67643692a8846275863e1ea40cbfe55cbcdc19c85490a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7164c962075ff92b9fd67643692a8846275863e1ea40cbfe55cbcdc19c85490a", kill_on_drop: false }`
[INFO] [stdout] 7164c962075ff92b9fd67643692a8846275863e1ea40cbfe55cbcdc19c85490a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8b42e64e435ebb84595c6028bcad63fe88fda6e0762a536dd30c2fea5543ec83
[INFO] running `Command { std: "docker" "start" "-a" "8b42e64e435ebb84595c6028bcad63fe88fda6e0762a536dd30c2fea5543ec83", kill_on_drop: false }`
[INFO] [stderr]    Compiling kik_sync_service v0.7.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]    --> src/kik_channel.rs:272:21
[INFO] [stdout]     |
[INFO] [stdout] 272 |                     std::mem::drop(&lock);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^-----^
[INFO] [stdout]     |                                    |
[INFO] [stdout]     |                                    argument has type `&std::sync::MutexGuard<'_, std::sync::mpsc::Receiver<S>>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dropping_references)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     |
[INFO] [stdout] 272 -                     std::mem::drop(&lock);
[INFO] [stdout] 272 +                     let _ = &lock;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]    --> src/kik_channel.rs:286:9
[INFO] [stdout]     |
[INFO] [stdout] 286 |         std::mem::drop(&self.rx_inserter);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^-----------------^
[INFO] [stdout]     |                        |
[INFO] [stdout]     |                        argument has type `&Arc<std::sync::Mutex<std::sync::mpsc::Receiver<S>>>`
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     |
[INFO] [stdout] 286 -         std::mem::drop(&self.rx_inserter);
[INFO] [stdout] 286 +         let _ = &self.rx_inserter;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]    --> src/kik_channel.rs:287:9
[INFO] [stdout]     |
[INFO] [stdout] 287 |         std::mem::drop(&self.feeder);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^------------^
[INFO] [stdout]     |                        |
[INFO] [stdout]     |                        argument has type `&FeederRecycler<T, R, S>`
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     |
[INFO] [stdout] 287 -         std::mem::drop(&self.feeder);
[INFO] [stdout] 287 +         let _ = &self.feeder;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]    --> src/kik_channel.rs:288:9
[INFO] [stdout]     |
[INFO] [stdout] 288 |         std::mem::drop(&self.tx_deliverer);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^------------------^
[INFO] [stdout]     |                        |
[INFO] [stdout]     |                        argument has type `&SyncSender<S>`
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     |
[INFO] [stdout] 288 -         std::mem::drop(&self.tx_deliverer);
[INFO] [stdout] 288 +         let _ = &self.tx_deliverer;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]    --> src/kik_channel.rs:289:9
[INFO] [stdout]     |
[INFO] [stdout] 289 |         std::mem::drop(&self.thread_vec);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^----------------^
[INFO] [stdout]     |                        |
[INFO] [stdout]     |                        argument has type `&Vec<JoinHandle<()>>`
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     |
[INFO] [stdout] 289 -         std::mem::drop(&self.thread_vec);
[INFO] [stdout] 289 +         let _ = &self.thread_vec;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]   --> src/kik_worker.rs:95:45
[INFO] [stdout]    |
[INFO] [stdout] 95 | ...                   std::mem::drop(self);
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^----^
[INFO] [stdout]    |                                      |
[INFO] [stdout]    |                                      argument has type `&Worker<T, R, S>`
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]    |
[INFO] [stdout] 95 -                                             std::mem::drop(self);
[INFO] [stdout] 95 +                                             let _ = self;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]    --> src/kik_worker.rs:108:21
[INFO] [stdout]     |
[INFO] [stdout] 108 |                     std::mem::drop(self);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^----^
[INFO] [stdout]     |                                    |
[INFO] [stdout]     |                                    argument has type `&Worker<T, R, S>`
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     |
[INFO] [stdout] 108 -                     std::mem::drop(self);
[INFO] [stdout] 108 +                     let _ = self;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]    --> src/kik_worker.rs:155:9
[INFO] [stdout]     |
[INFO] [stdout] 155 |         std::mem::drop(&self.tx_deliverer);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^------------------^
[INFO] [stdout]     |                        |
[INFO] [stdout]     |                        argument has type `&SyncSender<S>`
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     |
[INFO] [stdout] 155 -         std::mem::drop(&self.tx_deliverer);
[INFO] [stdout] 155 +         let _ = &self.tx_deliverer;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]    --> src/kik_worker.rs:156:9
[INFO] [stdout]     |
[INFO] [stdout] 156 |         std::mem::drop(&self.rx_inserter);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^-----------------^
[INFO] [stdout]     |                        |
[INFO] [stdout]     |                        argument has type `&std::sync::Weak<std::sync::Mutex<std::sync::mpsc::Receiver<S>>>`
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     |
[INFO] [stdout] 156 -         std::mem::drop(&self.rx_inserter);
[INFO] [stdout] 156 +         let _ = &self.rx_inserter;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]    --> src/kik_feeder.rs:244:9
[INFO] [stdout]     |
[INFO] [stdout] 244 |         std::mem::drop(&self.input_vec);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^---------------^
[INFO] [stdout]     |                        |
[INFO] [stdout]     |                        argument has type `&Vec<R>`
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     |
[INFO] [stdout] 244 -         std::mem::drop(&self.input_vec);
[INFO] [stdout] 244 +         let _ = &self.input_vec;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]    --> src/kik_feeder.rs:245:9
[INFO] [stdout]     |
[INFO] [stdout] 245 |         std::mem::drop(&self.rx_deliverer);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^------------------^
[INFO] [stdout]     |                        |
[INFO] [stdout]     |                        argument has type `&std::sync::mpsc::Receiver<S>`
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     |
[INFO] [stdout] 245 -         std::mem::drop(&self.rx_deliverer);
[INFO] [stdout] 245 +         let _ = &self.rx_deliverer;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]    --> src/kik_feeder.rs:246:9
[INFO] [stdout]     |
[INFO] [stdout] 246 |         std::mem::drop(&self.tx_inserter);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^-----------------^
[INFO] [stdout]     |                        |
[INFO] [stdout]     |                        argument has type `&SyncSender<S>`
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     |
[INFO] [stdout] 246 -         std::mem::drop(&self.tx_inserter);
[INFO] [stdout] 246 +         let _ = &self.tx_inserter;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.18s
[INFO] running `Command { std: "docker" "inspect" "8b42e64e435ebb84595c6028bcad63fe88fda6e0762a536dd30c2fea5543ec83", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8b42e64e435ebb84595c6028bcad63fe88fda6e0762a536dd30c2fea5543ec83", kill_on_drop: false }`
[INFO] [stdout] 8b42e64e435ebb84595c6028bcad63fe88fda6e0762a536dd30c2fea5543ec83
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6e2bd1e0225b0b5d959c2fcaa575f0e6d45f2d58ef22f7f25eafdeae5eea8c84
[INFO] running `Command { std: "docker" "start" "-a" "6e2bd1e0225b0b5d959c2fcaa575f0e6d45f2d58ef22f7f25eafdeae5eea8c84", kill_on_drop: false }`
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]    --> src/kik_channel.rs:272:21
[INFO] [stdout]     |
[INFO] [stdout] 272 |                     std::mem::drop(&lock);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^-----^
[INFO] [stdout]     |                                    |
[INFO] [stdout]     |                                    argument has type `&std::sync::MutexGuard<'_, std::sync::mpsc::Receiver<S>>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dropping_references)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     |
[INFO] [stdout] 272 -                     std::mem::drop(&lock);
[INFO] [stdout] 272 +                     let _ = &lock;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]    --> src/kik_channel.rs:286:9
[INFO] [stdout]     |
[INFO] [stdout] 286 |         std::mem::drop(&self.rx_inserter);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^-----------------^
[INFO] [stdout]     |                        |
[INFO] [stdout]     |                        argument has type `&Arc<std::sync::Mutex<std::sync::mpsc::Receiver<S>>>`
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     |
[INFO] [stdout] 286 -         std::mem::drop(&self.rx_inserter);
[INFO] [stdout] 286 +         let _ = &self.rx_inserter;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]    --> src/kik_channel.rs:287:9
[INFO] [stdout]     |
[INFO] [stdout] 287 |         std::mem::drop(&self.feeder);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^------------^
[INFO] [stdout]     |                        |
[INFO] [stdout]     |                        argument has type `&FeederRecycler<T, R, S>`
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     |
[INFO] [stdout] 287 -         std::mem::drop(&self.feeder);
[INFO] [stdout] 287 +         let _ = &self.feeder;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]    --> src/kik_channel.rs:288:9
[INFO] [stdout]     |
[INFO] [stdout] 288 |         std::mem::drop(&self.tx_deliverer);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^------------------^
[INFO] [stdout]     |                        |
[INFO] [stdout]     |                        argument has type `&SyncSender<S>`
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     |
[INFO] [stdout] 288 -         std::mem::drop(&self.tx_deliverer);
[INFO] [stdout] 288 +         let _ = &self.tx_deliverer;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]    --> src/kik_channel.rs:289:9
[INFO] [stdout]     |
[INFO] [stdout] 289 |         std::mem::drop(&self.thread_vec);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^----------------^
[INFO] [stdout]     |                        |
[INFO] [stdout]     |                        argument has type `&Vec<JoinHandle<()>>`
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     |
[INFO] [stdout] 289 -         std::mem::drop(&self.thread_vec);
[INFO] [stdout] 289 +         let _ = &self.thread_vec;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]   --> src/kik_worker.rs:95:45
[INFO] [stdout]    |
[INFO] [stdout] 95 | ...                   std::mem::drop(self);
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^----^
[INFO] [stdout]    |                                      |
[INFO] [stdout]    |                                      argument has type `&Worker<T, R, S>`
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]    |
[INFO] [stdout] 95 -                                             std::mem::drop(self);
[INFO] [stdout] 95 +                                             let _ = self;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]    --> src/kik_worker.rs:108:21
[INFO] [stdout]     |
[INFO] [stdout] 108 |                     std::mem::drop(self);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^----^
[INFO] [stdout]     |                                    |
[INFO] [stdout]     |                                    argument has type `&Worker<T, R, S>`
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     |
[INFO] [stdout] 108 -                     std::mem::drop(self);
[INFO] [stdout] 108 +                     let _ = self;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]    --> src/kik_worker.rs:155:9
[INFO] [stdout]     |
[INFO] [stdout] 155 |         std::mem::drop(&self.tx_deliverer);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^------------------^
[INFO] [stdout]     |                        |
[INFO] [stdout]     |                        argument has type `&SyncSender<S>`
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     |
[INFO] [stdout] 155 -         std::mem::drop(&self.tx_deliverer);
[INFO] [stdout] 155 +         let _ = &self.tx_deliverer;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]    --> src/kik_worker.rs:156:9
[INFO] [stdout]     |
[INFO] [stdout] 156 |         std::mem::drop(&self.rx_inserter);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^-----------------^
[INFO] [stdout]     |                        |
[INFO] [stdout]     |                        argument has type `&std::sync::Weak<std::sync::Mutex<std::sync::mpsc::Receiver<S>>>`
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     |
[INFO] [stdout] 156 -         std::mem::drop(&self.rx_inserter);
[INFO] [stdout] 156 +         let _ = &self.rx_inserter;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]    --> src/kik_feeder.rs:244:9
[INFO] [stdout]     |
[INFO] [stdout] 244 |         std::mem::drop(&self.input_vec);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^---------------^
[INFO] [stdout]     |                        |
[INFO] [stdout]     |                        argument has type `&Vec<R>`
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     |
[INFO] [stdout] 244 -         std::mem::drop(&self.input_vec);
[INFO] [stdout] 244 +         let _ = &self.input_vec;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]    --> src/kik_feeder.rs:245:9
[INFO] [stdout]     |
[INFO] [stdout] 245 |         std::mem::drop(&self.rx_deliverer);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^------------------^
[INFO] [stdout]     |                        |
[INFO] [stdout]     |                        argument has type `&std::sync::mpsc::Receiver<S>`
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     |
[INFO] [stdout] 245 -         std::mem::drop(&self.rx_deliverer);
[INFO] [stdout] 245 +         let _ = &self.rx_deliverer;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling kik_sync_service v0.7.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]    --> src/kik_feeder.rs:246:9
[INFO] [stdout]     |
[INFO] [stdout] 246 |         std::mem::drop(&self.tx_inserter);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^-----------------^
[INFO] [stdout]     |                        |
[INFO] [stdout]     |                        argument has type `&SyncSender<S>`
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     |
[INFO] [stdout] 246 -         std::mem::drop(&self.tx_inserter);
[INFO] [stdout] 246 +         let _ = &self.tx_inserter;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]    --> src/kik_channel.rs:272:21
[INFO] [stdout]     |
[INFO] [stdout] 272 |                     std::mem::drop(&lock);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^-----^
[INFO] [stdout]     |                                    |
[INFO] [stdout]     |                                    argument has type `&std::sync::MutexGuard<'_, std::sync::mpsc::Receiver<S>>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dropping_references)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     |
[INFO] [stdout] 272 -                     std::mem::drop(&lock);
[INFO] [stdout] 272 +                     let _ = &lock;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]    --> src/kik_channel.rs:286:9
[INFO] [stdout]     |
[INFO] [stdout] 286 |         std::mem::drop(&self.rx_inserter);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^-----------------^
[INFO] [stdout]     |                        |
[INFO] [stdout]     |                        argument has type `&Arc<std::sync::Mutex<std::sync::mpsc::Receiver<S>>>`
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     |
[INFO] [stdout] 286 -         std::mem::drop(&self.rx_inserter);
[INFO] [stdout] 286 +         let _ = &self.rx_inserter;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]    --> src/kik_channel.rs:287:9
[INFO] [stdout]     |
[INFO] [stdout] 287 |         std::mem::drop(&self.feeder);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^------------^
[INFO] [stdout]     |                        |
[INFO] [stdout]     |                        argument has type `&FeederRecycler<T, R, S>`
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     |
[INFO] [stdout] 287 -         std::mem::drop(&self.feeder);
[INFO] [stdout] 287 +         let _ = &self.feeder;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]    --> src/kik_channel.rs:288:9
[INFO] [stdout]     |
[INFO] [stdout] 288 |         std::mem::drop(&self.tx_deliverer);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^------------------^
[INFO] [stdout]     |                        |
[INFO] [stdout]     |                        argument has type `&SyncSender<S>`
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     |
[INFO] [stdout] 288 -         std::mem::drop(&self.tx_deliverer);
[INFO] [stdout] 288 +         let _ = &self.tx_deliverer;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]    --> src/kik_channel.rs:289:9
[INFO] [stdout]     |
[INFO] [stdout] 289 |         std::mem::drop(&self.thread_vec);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^----------------^
[INFO] [stdout]     |                        |
[INFO] [stdout]     |                        argument has type `&Vec<JoinHandle<()>>`
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     |
[INFO] [stdout] 289 -         std::mem::drop(&self.thread_vec);
[INFO] [stdout] 289 +         let _ = &self.thread_vec;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]   --> src/kik_worker.rs:95:45
[INFO] [stdout]    |
[INFO] [stdout] 95 | ...                   std::mem::drop(self);
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^----^
[INFO] [stdout]    |                                      |
[INFO] [stdout]    |                                      argument has type `&Worker<T, R, S>`
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]    |
[INFO] [stdout] 95 -                                             std::mem::drop(self);
[INFO] [stdout] 95 +                                             let _ = self;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]    --> src/kik_worker.rs:108:21
[INFO] [stdout]     |
[INFO] [stdout] 108 |                     std::mem::drop(self);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^----^
[INFO] [stdout]     |                                    |
[INFO] [stdout]     |                                    argument has type `&Worker<T, R, S>`
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     |
[INFO] [stdout] 108 -                     std::mem::drop(self);
[INFO] [stdout] 108 +                     let _ = self;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]    --> src/kik_worker.rs:155:9
[INFO] [stdout]     |
[INFO] [stdout] 155 |         std::mem::drop(&self.tx_deliverer);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^------------------^
[INFO] [stdout]     |                        |
[INFO] [stdout]     |                        argument has type `&SyncSender<S>`
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     |
[INFO] [stdout] 155 -         std::mem::drop(&self.tx_deliverer);
[INFO] [stdout] 155 +         let _ = &self.tx_deliverer;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]    --> src/kik_worker.rs:156:9
[INFO] [stdout]     |
[INFO] [stdout] 156 |         std::mem::drop(&self.rx_inserter);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^-----------------^
[INFO] [stdout]     |                        |
[INFO] [stdout]     |                        argument has type `&std::sync::Weak<std::sync::Mutex<std::sync::mpsc::Receiver<S>>>`
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     |
[INFO] [stdout] 156 -         std::mem::drop(&self.rx_inserter);
[INFO] [stdout] 156 +         let _ = &self.rx_inserter;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]    --> src/kik_feeder.rs:244:9
[INFO] [stdout]     |
[INFO] [stdout] 244 |         std::mem::drop(&self.input_vec);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^---------------^
[INFO] [stdout]     |                        |
[INFO] [stdout]     |                        argument has type `&Vec<R>`
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     |
[INFO] [stdout] 244 -         std::mem::drop(&self.input_vec);
[INFO] [stdout] 244 +         let _ = &self.input_vec;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]    --> src/kik_feeder.rs:245:9
[INFO] [stdout]     |
[INFO] [stdout] 245 |         std::mem::drop(&self.rx_deliverer);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^------------------^
[INFO] [stdout]     |                        |
[INFO] [stdout]     |                        argument has type `&std::sync::mpsc::Receiver<S>`
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     |
[INFO] [stdout] 245 -         std::mem::drop(&self.rx_deliverer);
[INFO] [stdout] 245 +         let _ = &self.rx_deliverer;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]    --> src/kik_feeder.rs:246:9
[INFO] [stdout]     |
[INFO] [stdout] 246 |         std::mem::drop(&self.tx_inserter);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^-----------------^
[INFO] [stdout]     |                        |
[INFO] [stdout]     |                        argument has type `&SyncSender<S>`
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]     |
[INFO] [stdout] 246 -         std::mem::drop(&self.tx_inserter);
[INFO] [stdout] 246 +         let _ = &self.tx_inserter;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.70s
[INFO] running `Command { std: "docker" "inspect" "6e2bd1e0225b0b5d959c2fcaa575f0e6d45f2d58ef22f7f25eafdeae5eea8c84", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e2bd1e0225b0b5d959c2fcaa575f0e6d45f2d58ef22f7f25eafdeae5eea8c84", kill_on_drop: false }`
[INFO] [stdout] 6e2bd1e0225b0b5d959c2fcaa575f0e6d45f2d58ef22f7f25eafdeae5eea8c84
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] b088c0dfcbce88c03f3af8f5083040157d72a4d024c90d5b655cf78e59158bf5
[INFO] running `Command { std: "docker" "start" "-a" "b088c0dfcbce88c03f3af8f5083040157d72a4d024c90d5b655cf78e59158bf5", kill_on_drop: false }`
[INFO] [stderr] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stderr]    --> src/kik_channel.rs:272:21
[INFO] [stderr]     |
[INFO] [stderr] 272 |                     std::mem::drop(&lock);
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^-----^
[INFO] [stderr]     |                                    |
[INFO] [stderr]     |                                    argument has type `&std::sync::MutexGuard<'_, std::sync::mpsc::Receiver<S>>`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dropping_references)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the expression or result
[INFO] [stderr]     |
[INFO] [stderr] 272 -                     std::mem::drop(&lock);
[INFO] [stderr] 272 +                     let _ = &lock;
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stderr]    --> src/kik_channel.rs:286:9
[INFO] [stderr]     |
[INFO] [stderr] 286 |         std::mem::drop(&self.rx_inserter);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^-----------------^
[INFO] [stderr]     |                        |
[INFO] [stderr]     |                        argument has type `&Arc<std::sync::Mutex<std::sync::mpsc::Receiver<S>>>`
[INFO] [stderr]     |
[INFO] [stderr] help: use `let _ = ...` to ignore the expression or result
[INFO] [stderr]     |
[INFO] [stderr] 286 -         std::mem::drop(&self.rx_inserter);
[INFO] [stderr] 286 +         let _ = &self.rx_inserter;
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stderr]    --> src/kik_channel.rs:287:9
[INFO] [stderr]     |
[INFO] [stderr] 287 |         std::mem::drop(&self.feeder);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^------------^
[INFO] [stderr]     |                        |
[INFO] [stderr]     |                        argument has type `&FeederRecycler<T, R, S>`
[INFO] [stderr]     |
[INFO] [stderr] help: use `let _ = ...` to ignore the expression or result
[INFO] [stderr]     |
[INFO] [stderr] 287 -         std::mem::drop(&self.feeder);
[INFO] [stderr] 287 +         let _ = &self.feeder;
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stderr]    --> src/kik_channel.rs:288:9
[INFO] [stderr]     |
[INFO] [stderr] 288 |         std::mem::drop(&self.tx_deliverer);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^------------------^
[INFO] [stderr]     |                        |
[INFO] [stderr]     |                        argument has type `&SyncSender<S>`
[INFO] [stderr]     |
[INFO] [stderr] help: use `let _ = ...` to ignore the expression or result
[INFO] [stderr]     |
[INFO] [stderr] 288 -         std::mem::drop(&self.tx_deliverer);
[INFO] [stderr] 288 +         let _ = &self.tx_deliverer;
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stderr]    --> src/kik_channel.rs:289:9
[INFO] [stderr]     |
[INFO] [stderr] 289 |         std::mem::drop(&self.thread_vec);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^----------------^
[INFO] [stderr]     |                        |
[INFO] [stderr]     |                        argument has type `&Vec<JoinHandle<()>>`
[INFO] [stderr]     |
[INFO] [stderr] help: use `let _ = ...` to ignore the expression or result
[INFO] [stderr]     |
[INFO] [stderr] 289 -         std::mem::drop(&self.thread_vec);
[INFO] [stderr] 289 +         let _ = &self.thread_vec;
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stderr]   --> src/kik_worker.rs:95:45
[INFO] [stderr]    |
[INFO] [stderr] 95 | ...                   std::mem::drop(self);
[INFO] [stderr]    |                       ^^^^^^^^^^^^^^^----^
[INFO] [stderr]    |                                      |
[INFO] [stderr]    |                                      argument has type `&Worker<T, R, S>`
[INFO] [stderr]    |
[INFO] [stderr] help: use `let _ = ...` to ignore the expression or result
[INFO] [stderr]    |
[INFO] [stderr] 95 -                                             std::mem::drop(self);
[INFO] [stderr] 95 +                                             let _ = self;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stderr]    --> src/kik_worker.rs:108:21
[INFO] [stderr]     |
[INFO] [stderr] 108 |                     std::mem::drop(self);
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^----^
[INFO] [stderr]     |                                    |
[INFO] [stderr]     |                                    argument has type `&Worker<T, R, S>`
[INFO] [stderr]     |
[INFO] [stderr] help: use `let _ = ...` to ignore the expression or result
[INFO] [stderr]     |
[INFO] [stderr] 108 -                     std::mem::drop(self);
[INFO] [stderr] 108 +                     let _ = self;
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stderr]    --> src/kik_worker.rs:155:9
[INFO] [stderr]     |
[INFO] [stderr] 155 |         std::mem::drop(&self.tx_deliverer);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^------------------^
[INFO] [stderr]     |                        |
[INFO] [stderr]     |                        argument has type `&SyncSender<S>`
[INFO] [stderr]     |
[INFO] [stderr] help: use `let _ = ...` to ignore the expression or result
[INFO] [stderr]     |
[INFO] [stderr] 155 -         std::mem::drop(&self.tx_deliverer);
[INFO] [stderr] 155 +         let _ = &self.tx_deliverer;
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stderr]    --> src/kik_worker.rs:156:9
[INFO] [stderr]     |
[INFO] [stderr] 156 |         std::mem::drop(&self.rx_inserter);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^-----------------^
[INFO] [stderr]     |                        |
[INFO] [stderr]     |                        argument has type `&std::sync::Weak<std::sync::Mutex<std::sync::mpsc::Receiver<S>>>`
[INFO] [stderr]     |
[INFO] [stderr] help: use `let _ = ...` to ignore the expression or result
[INFO] [stderr]     |
[INFO] [stderr] 156 -         std::mem::drop(&self.rx_inserter);
[INFO] [stderr] 156 +         let _ = &self.rx_inserter;
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stderr]    --> src/kik_feeder.rs:244:9
[INFO] [stderr]     |
[INFO] [stderr] 244 |         std::mem::drop(&self.input_vec);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^---------------^
[INFO] [stderr]     |                        |
[INFO] [stderr]     |                        argument has type `&Vec<R>`
[INFO] [stderr]     |
[INFO] [stderr] help: use `let _ = ...` to ignore the expression or result
[INFO] [stderr]     |
[INFO] [stderr] 244 -         std::mem::drop(&self.input_vec);
[INFO] [stderr] 244 +         let _ = &self.input_vec;
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stderr]    --> src/kik_feeder.rs:245:9
[INFO] [stderr]     |
[INFO] [stderr] 245 |         std::mem::drop(&self.rx_deliverer);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^------------------^
[INFO] [stderr]     |                        |
[INFO] [stderr]     |                        argument has type `&std::sync::mpsc::Receiver<S>`
[INFO] [stderr]     |
[INFO] [stderr] help: use `let _ = ...` to ignore the expression or result
[INFO] [stderr]     |
[INFO] [stderr] 245 -         std::mem::drop(&self.rx_deliverer);
[INFO] [stderr] 245 +         let _ = &self.rx_deliverer;
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stderr]    --> src/kik_feeder.rs:246:9
[INFO] [stderr]     |
[INFO] [stderr] 246 |         std::mem::drop(&self.tx_inserter);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^-----------------^
[INFO] [stderr]     |                        |
[INFO] [stderr]     |                        argument has type `&SyncSender<S>`
[INFO] [stderr]     |
[INFO] [stderr] help: use `let _ = ...` to ignore the expression or result
[INFO] [stderr]     |
[INFO] [stderr] 246 -         std::mem::drop(&self.tx_inserter);
[INFO] [stderr] 246 +         let _ = &self.tx_inserter;
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: `kik_sync_service` (lib) generated 12 warnings
[INFO] [stderr] warning: `kik_sync_service` (lib test) generated 12 warnings (12 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/kik_sync_service-9ae33125274b8fdf)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test kik_message_example::tests::test ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.34s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests kik_sync_service
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - (line 38) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.13s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "b088c0dfcbce88c03f3af8f5083040157d72a4d024c90d5b655cf78e59158bf5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b088c0dfcbce88c03f3af8f5083040157d72a4d024c90d5b655cf78e59158bf5", kill_on_drop: false }`
[INFO] [stdout] b088c0dfcbce88c03f3af8f5083040157d72a4d024c90d5b655cf78e59158bf5