[INFO] crate chain_peer 0.1.1 is already in cache
[INFO] extracting crate chain_peer 0.1.1 into work/ex/clippy-test-run/sources/stable/reg/chain_peer/0.1.1
[INFO] extracting crate chain_peer 0.1.1 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/chain_peer/0.1.1
[INFO] validating manifest of chain_peer-0.1.1 on toolchain stable
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of chain_peer-0.1.1 on toolchain stable+rustflags=-Dclippy::into_iter_on_array
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing chain_peer-0.1.1
[INFO] finished frobbing chain_peer-0.1.1
[INFO] frobbed toml for chain_peer-0.1.1 written to work/ex/clippy-test-run/sources/stable/reg/chain_peer/0.1.1/Cargo.toml
[INFO] started frobbing chain_peer-0.1.1
[INFO] finished frobbing chain_peer-0.1.1
[INFO] frobbed toml for chain_peer-0.1.1 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/chain_peer/0.1.1/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] linting chain_peer-0.1.1 against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-3/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/reg/chain_peer/0.1.1:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+stable" "clippy" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 7cd7e712103fbc2ccad8070d3915d60de085ca876b6546fba3cf014cc2ca68ae
[INFO] running `"docker" "start" "-a" "7cd7e712103fbc2ccad8070d3915d60de085ca876b6546fba3cf014cc2ca68ae"`
[INFO] [stderr]     Checking chain_peer v0.1.1 (/opt/crater/workdir)
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/peer/peer.rs:32:13
[INFO] [stderr]    |
[INFO] [stderr] 32 |             client_r: client_r,
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^ help: replace it with: `client_r`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::redundant_field_names)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/peer/peer.rs:33:13
[INFO] [stderr]    |
[INFO] [stderr] 33 |             client_w: client_w,
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^ help: replace it with: `client_w`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/peer/server.rs:38:13
[INFO] [stderr]    |
[INFO] [stderr] 38 |             sock: sock,
[INFO] [stderr]    |             ^^^^^^^^^^ help: replace it with: `sock`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/peer/server.rs:50:13
[INFO] [stderr]    |
[INFO] [stderr] 50 |             caches: caches,
[INFO] [stderr]    |             ^^^^^^^^^^^^^^ help: replace it with: `caches`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/peer/server.rs:51:13
[INFO] [stderr]    |
[INFO] [stderr] 51 |             r_caches: r_caches,
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^ help: replace it with: `r_caches`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/peer/client.rs:25:13
[INFO] [stderr]    |
[INFO] [stderr] 25 |             sock: sock,
[INFO] [stderr]    |             ^^^^^^^^^^ help: replace it with: `sock`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/peer/connection.rs:46:13
[INFO] [stderr]    |
[INFO] [stderr] 46 |             sock: sock,
[INFO] [stderr]    |             ^^^^^^^^^^ help: replace it with: `sock`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/peer/connection.rs:47:13
[INFO] [stderr]    |
[INFO] [stderr] 47 |             token: token,
[INFO] [stderr]    |             ^^^^^^^^^^^^ help: replace it with: `token`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/peer/peer.rs:32:13
[INFO] [stderr]    |
[INFO] [stderr] 32 |             client_r: client_r,
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^ help: replace it with: `client_r`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::redundant_field_names)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/peer/peer.rs:33:13
[INFO] [stderr]    |
[INFO] [stderr] 33 |             client_w: client_w,
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^ help: replace it with: `client_w`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/peer/server.rs:38:13
[INFO] [stderr]    |
[INFO] [stderr] 38 |             sock: sock,
[INFO] [stderr]    |             ^^^^^^^^^^ help: replace it with: `sock`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/peer/server.rs:50:13
[INFO] [stderr]    |
[INFO] [stderr] 50 |             caches: caches,
[INFO] [stderr]    |             ^^^^^^^^^^^^^^ help: replace it with: `caches`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/peer/server.rs:51:13
[INFO] [stderr]    |
[INFO] [stderr] 51 |             r_caches: r_caches,
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^ help: replace it with: `r_caches`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/peer/client.rs:25:13
[INFO] [stderr]    |
[INFO] [stderr] 25 |             sock: sock,
[INFO] [stderr]    |             ^^^^^^^^^^ help: replace it with: `sock`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/peer/connection.rs:46:13
[INFO] [stderr]    |
[INFO] [stderr] 46 |             sock: sock,
[INFO] [stderr]    |             ^^^^^^^^^^ help: replace it with: `sock`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/peer/connection.rs:47:13
[INFO] [stderr]    |
[INFO] [stderr] 47 |             token: token,
[INFO] [stderr]    |             ^^^^^^^^^^^^ help: replace it with: `token`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: module has the same name as its containing module
[INFO] [stderr]  --> src/peer/mod.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | mod peer;
[INFO] [stderr]   | ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(clippy::module_inception)] on by default
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#module_inception
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::thread::sleep`
[INFO] [stderr]  --> src/peer/peer.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::thread::sleep;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::time::Duration`
[INFO] [stderr]  --> src/peer/peer.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use std::time::Duration;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `channel`
[INFO] [stderr]  --> src/peer/server.rs:7:11
[INFO] [stderr]   |
[INFO] [stderr] 7 | use mio::{channel, Events, Poll, PollOpt, Ready, Token};
[INFO] [stderr]   |           ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Events`
[INFO] [stderr]  --> src/peer/client.rs:4:11
[INFO] [stderr]   |
[INFO] [stderr] 4 | use mio::{Events, Ready, Poll, PollOpt, Token};
[INFO] [stderr]   |           ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `mio::unix::UnixReady`
[INFO] [stderr]  --> src/peer/client.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use mio::unix::UnixReady;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::time::Duration`
[INFO] [stderr]  --> src/peer/client.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use std::time::Duration;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `ErrorKind`, `Error`
[INFO] [stderr]  --> src/peer/client.rs:8:15
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::io::{Error, ErrorKind};
[INFO] [stderr]   |               ^^^^^  ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded unit expression
[INFO] [stderr]    --> src/peer/connection.rs:163:21
[INFO] [stderr]     |
[INFO] [stderr] 163 |                     ()
[INFO] [stderr]     |                     ^^ help: remove the final `()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::unused_unit)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_unit
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'mio::channel': use mio-extras instead
[INFO] [stderr]  --> src/peer/server.rs:7:11
[INFO] [stderr]   |
[INFO] [stderr] 7 | use mio::{channel, Events, Poll, PollOpt, Ready, Token};
[INFO] [stderr]   |           ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(deprecated)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'mio::Events::len': Index access removed in favor of iterator only API.
[INFO] [stderr]   --> src/peer/server.rs:64:76
[INFO] [stderr]    |
[INFO] [stderr] 64 |             trace!("processing events... cnt={}; len={}", cnt, self.events.len());
[INFO] [stderr]    |                                                                            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'mio::Events::get': Index access removed in favor of iterator only API.
[INFO] [stderr]   --> src/peer/server.rs:74:41
[INFO] [stderr]    |
[INFO] [stderr] 74 |                 let event = self.events.get(i).expect("Failed to get event");
[INFO] [stderr]    |                                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `w_q_clone`
[INFO] [stderr]   --> src/peer/peer.rs:47:17
[INFO] [stderr]    |
[INFO] [stderr] 47 |             let w_q_clone = w_q.clone();
[INFO] [stderr]    |                 ^^^^^^^^^ help: consider using `_w_q_clone` instead
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `caches`
[INFO] [stderr]    --> src/peer/server.rs:119:13
[INFO] [stderr]     |
[INFO] [stderr] 119 |         let caches = self.caches.clone();
[INFO] [stderr]     |             ^^^^^^ help: consider using `_caches` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]   --> src/peer/client.rs:54:17
[INFO] [stderr]    |
[INFO] [stderr] 54 |             Err(e) => {
[INFO] [stderr]    |                 ^ help: consider using `_e` instead
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/peer/peer.rs:117:13
[INFO] [stderr]     |
[INFO] [stderr] 117 |         let mut cache = self.client_r.clone();
[INFO] [stderr]     |             ----^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/peer/peer.rs:123:13
[INFO] [stderr]     |
[INFO] [stderr] 123 |         let mut cache = self.client_w.clone();
[INFO] [stderr]     |             ----^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/peer/server.rs:171:17
[INFO] [stderr]     |
[INFO] [stderr] 171 |             let mut w_cache = caches_clone.lock().unwrap().get_mut(&key).unwrap().clone();
[INFO] [stderr]     |                 ----^^^^^^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/peer/server.rs:218:13
[INFO] [stderr]     |
[INFO] [stderr] 218 |         let mut caches = self.caches.clone();
[INFO] [stderr]     |             ----^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/peer/server.rs:219:13
[INFO] [stderr]     |
[INFO] [stderr] 219 |         let mut r_caches = self.r_caches.clone();
[INFO] [stderr]     |             ----^^^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/peer/server.rs:269:13
[INFO] [stderr]     |
[INFO] [stderr] 269 |         let mut r_caches = self.r_caches.clone();
[INFO] [stderr]     |             ----^^^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/peer/client.rs:36:13
[INFO] [stderr]    |
[INFO] [stderr] 36 |         let mut cache = self.r_cache.clone();
[INFO] [stderr]    |             ----^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: very complex type used. Consider factoring parts into `type` definitions
[INFO] [stderr]   --> src/peer/peer.rs:17:15
[INFO] [stderr]    |
[INFO] [stderr] 17 |     r_queues: Arc<Mutex<HashMap<SocketAddr, Arc<Mutex<Vec<Vec<u8>>>>>>>, 
[INFO] [stderr]    |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::type_complexity)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#type_complexity
[INFO] [stderr] 
[INFO] [stderr] warning: very complex type used. Consider factoring parts into `type` definitions
[INFO] [stderr]   --> src/peer/peer.rs:18:19
[INFO] [stderr]    |
[INFO] [stderr] 18 |     pub w_queues: Arc<Mutex<HashMap<SocketAddr, Arc<Mutex<Vec<Vec<u8>>>>>>>, 
[INFO] [stderr]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#type_complexity
[INFO] [stderr] 
[INFO] [stderr] warning: very complex type used. Consider factoring parts into `type` definitions
[INFO] [stderr]   --> src/peer/peer.rs:25:21
[INFO] [stderr]    |
[INFO] [stderr] 25 |     pub fn new(r_q: Arc<Mutex<HashMap<SocketAddr, Arc<Mutex<Vec<Vec<u8>>>>>>>, 
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#type_complexity
[INFO] [stderr] 
[INFO] [stderr] warning: very complex type used. Consider factoring parts into `type` definitions
[INFO] [stderr]   --> src/peer/peer.rs:26:21
[INFO] [stderr]    |
[INFO] [stderr] 26 |                w_q: Arc<Mutex<HashMap<SocketAddr, Arc<Mutex<Vec<Vec<u8>>>>>>>,
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#type_complexity
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `n` is only used to index `buf`.
[INFO] [stderr]   --> src/peer/peer.rs:68:18
[INFO] [stderr]    |
[INFO] [stderr] 68 |         for n in 0..end {
[INFO] [stderr]    |                  ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::needless_range_loop)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stderr] help: consider using an iterator
[INFO] [stderr]    |
[INFO] [stderr] 68 |         for <item> in buf.iter().take(end) {
[INFO] [stderr]    |             ^^^^^^    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]   --> src/peer/peer.rs:80:29
[INFO] [stderr]    |
[INFO] [stderr] 80 |             let key_clone = key.clone();
[INFO] [stderr]    |                             ^^^^^^^^^^^ help: try dereferencing it: `*key`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::clone_on_copy)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/peer/peer.rs:96:13
[INFO] [stderr]    |
[INFO] [stderr] 96 |             poll.register(&stream, Token(100_000_001), Ready::writable(), PollOpt::edge());
[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: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/peer/peer.rs:99:17
[INFO] [stderr]    |
[INFO] [stderr] 99 |                 poll.poll(&mut events, None);
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/peer/peer.rs:105:25
[INFO] [stderr]     |
[INFO] [stderr] 105 |                         client.readable(&mut poll);
[INFO] [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: very complex type used. Consider factoring parts into `type` definitions
[INFO] [stderr]   --> src/peer/server.rs:30:13
[INFO] [stderr]    |
[INFO] [stderr] 30 |     caches: Arc<Mutex<HashMap<SocketAddr, Arc<Mutex<Vec<Vec<u8>>>>>>>,
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#type_complexity
[INFO] [stderr] 
[INFO] [stderr] warning: very complex type used. Consider factoring parts into `type` definitions
[INFO] [stderr]   --> src/peer/server.rs:32:15
[INFO] [stderr]    |
[INFO] [stderr] 32 |     r_caches: Arc<Mutex<HashMap<SocketAddr, Arc<Mutex<Vec<Vec<u8>>>>>>>,
[INFO] [stderr]    |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#type_complexity
[INFO] [stderr] 
[INFO] [stderr] warning: very complex type used. Consider factoring parts into `type` definitions
[INFO] [stderr]   --> src/peer/server.rs:36:43
[INFO] [stderr]    |
[INFO] [stderr] 36 |     pub fn new(sock: TcpListener, caches: Arc<Mutex<HashMap<SocketAddr, Arc<Mutex<Vec<Vec<u8>>>>>>>, r_caches: Arc<Mutex<HashMap<SocketAddr, Arc<Mutex<Vec<Vec<u8>>>>>>>) -> Server {
[INFO] [stderr]    |                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#type_complexity
[INFO] [stderr] 
[INFO] [stderr] warning: very complex type used. Consider factoring parts into `type` definitions
[INFO] [stderr]   --> src/peer/server.rs:36:112
[INFO] [stderr]    |
[INFO] [stderr] 36 |     pub fn new(sock: TcpListener, caches: Arc<Mutex<HashMap<SocketAddr, Arc<Mutex<Vec<Vec<u8>>>>>>>, r_caches: Arc<Mutex<HashMap<SocketAddr, Arc<Mutex<Vec<Vec<u8>>>>>>>) -> Server {
[INFO] [stderr]    |                                                                                                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#type_complexity
[INFO] [stderr] 
[INFO] [stderr] warning: `if _ { .. } else { .. }` is an expression
[INFO] [stderr]    --> src/peer/server.rs:172:13
[INFO] [stderr]     |
[INFO] [stderr] 172 | /             let mut buf:Vec<u8> = vec![8u8,0,0,0];
[INFO] [stderr] 173 | |             if w_cache.lock().unwrap().len() != 0 {
[INFO] [stderr] 174 | |                 // println!("缓冲区有内容");
[INFO] [stderr] 175 | |                 buf = w_cache.lock().unwrap().pop().unwrap();
[INFO] [stderr] 176 | |             }
[INFO] [stderr]     | |_____________^ help: it is more idiomatic to write: `let <mut> buf = if w_cache.lock().unwrap().len() != 0 { w_cache.lock().unwrap().pop().unwrap() } else { < [ _ ] > :: into_vec ( box [ $ ( $ x ) , * ] ) };`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::useless_let_if_seq)] on by default
[INFO] [stderr]     = note: you might not need `mut` at all
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_let_if_seq
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/peer/server.rs:277:13
[INFO] [stderr]     |
[INFO] [stderr] 277 |             c.send_message(Rc::new(Vec::new()));
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: module has the same name as its containing module
[INFO] [stderr]  --> src/peer/mod.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | mod peer;
[INFO] [stderr]   | ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(clippy::module_inception)] on by default
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#module_inception
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::thread::sleep`
[INFO] [stderr]  --> src/peer/peer.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::thread::sleep;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::time::Duration`
[INFO] [stderr]  --> src/peer/peer.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use std::time::Duration;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `channel`
[INFO] [stderr]  --> src/peer/server.rs:7:11
[INFO] [stderr]   |
[INFO] [stderr] 7 | use mio::{channel, Events, Poll, PollOpt, Ready, Token};
[INFO] [stderr]   |           ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Events`
[INFO] [stderr]  --> src/peer/client.rs:4:11
[INFO] [stderr]   |
[INFO] [stderr] 4 | use mio::{Events, Ready, Poll, PollOpt, Token};
[INFO] [stderr]   |           ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `mio::unix::UnixReady`
[INFO] [stderr]  --> src/peer/client.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use mio::unix::UnixReady;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::time::Duration`
[INFO] [stderr]  --> src/peer/client.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use std::time::Duration;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `ErrorKind`, `Error`
[INFO] [stderr]  --> src/peer/client.rs:8:15
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::io::{Error, ErrorKind};
[INFO] [stderr]   |               ^^^^^  ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded unit expression
[INFO] [stderr]    --> src/peer/connection.rs:163:21
[INFO] [stderr]     |
[INFO] [stderr] 163 |                     ()
[INFO] [stderr]     |                     ^^ help: remove the final `()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::unused_unit)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_unit
[INFO] [stderr] warning: the loop variable `i` is only used to index `buf`.
[INFO] [stderr] 
[INFO] [stderr]   --> src/peer/client.rs:48:26
[INFO] [stderr]    |
[INFO] [stderr] 48 |                 for i in 0..n {
[INFO] [stderr]    |                          ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stderr] help: consider using an iterator
[INFO] [stderr]    |
[INFO] [stderr] 48 |                 for <item> in buf.iter().take(n) {
[INFO] [stderr]    |                     ^^^^^^    ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/peer/client.rs:60:9
[INFO] [stderr]    |
[INFO] [stderr] 60 |         poll.reregister(&self.sock, self.token, Ready::writable(), PollOpt::edge());
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/peer/client.rs:107:13
[INFO] [stderr]     |
[INFO] [stderr] 107 | /             poll.reregister(&self.sock, self.token, self.interest,
[INFO] [stderr] 108 | |                                   PollOpt::edge());
[INFO] [stderr]     | |___________________________________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]    --> src/peer/connection.rs:153:12
[INFO] [stderr]     |
[INFO] [stderr] 153 |         if buf.len() != 0 {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!buf.is_empty()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::len_zero)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'mio::channel': use mio-extras instead
[INFO] [stderr]  --> src/peer/server.rs:7:11
[INFO] [stderr]   |
[INFO] [stderr] 7 | use mio::{channel, Events, Poll, PollOpt, Ready, Token};
[INFO] [stderr]   |           ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(deprecated)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'mio::Events::len': Index access removed in favor of iterator only API.
[INFO] [stderr]   --> src/peer/server.rs:64:76
[INFO] [stderr]    |
[INFO] [stderr] 64 |             trace!("processing events... cnt={}; len={}", cnt, self.events.len());
[INFO] [stderr]    |                                                                            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'mio::Events::get': Index access removed in favor of iterator only API.
[INFO] [stderr]   --> src/peer/server.rs:74:41
[INFO] [stderr]    |
[INFO] [stderr] 74 |                 let event = self.events.get(i).expect("Failed to get event");
[INFO] [stderr]    |                                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `w_q_clone`
[INFO] [stderr]   --> src/peer/peer.rs:47:17
[INFO] [stderr]    |
[INFO] [stderr] 47 |             let w_q_clone = w_q.clone();
[INFO] [stderr]    |                 ^^^^^^^^^ help: consider using `_w_q_clone` instead
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `caches`
[INFO] [stderr]    --> src/peer/server.rs:119:13
[INFO] [stderr]     |
[INFO] [stderr] 119 |         let caches = self.caches.clone();
[INFO] [stderr]     |             ^^^^^^ help: consider using `_caches` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]   --> src/peer/client.rs:54:17
[INFO] [stderr]    |
[INFO] [stderr] 54 |             Err(e) => {
[INFO] [stderr]    |                 ^ help: consider using `_e` instead
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/peer/peer.rs:117:13
[INFO] [stderr]     |
[INFO] [stderr] 117 |         let mut cache = self.client_r.clone();
[INFO] [stderr]     |             ----^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/peer/peer.rs:123:13
[INFO] [stderr]     |
[INFO] [stderr] 123 |         let mut cache = self.client_w.clone();
[INFO] [stderr]     |             ----^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/peer/server.rs:171:17
[INFO] [stderr]     |
[INFO] [stderr] 171 |             let mut w_cache = caches_clone.lock().unwrap().get_mut(&key).unwrap().clone();
[INFO] [stderr]     |                 ----^^^^^^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/peer/server.rs:218:13
[INFO] [stderr]     |
[INFO] [stderr] 218 |         let mut caches = self.caches.clone();
[INFO] [stderr]     |             ----^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/peer/server.rs:219:13
[INFO] [stderr]     |
[INFO] [stderr] 219 |         let mut r_caches = self.r_caches.clone();
[INFO] [stderr]     |             ----^^^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/peer/server.rs:269:13
[INFO] [stderr]     |
[INFO] [stderr] 269 |         let mut r_caches = self.r_caches.clone();
[INFO] [stderr]     |             ----^^^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/peer/client.rs:36:13
[INFO] [stderr]    |
[INFO] [stderr] 36 |         let mut cache = self.r_cache.clone();
[INFO] [stderr]    |             ----^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: very complex type used. Consider factoring parts into `type` definitions
[INFO] [stderr]   --> src/peer/peer.rs:17:15
[INFO] [stderr]    |
[INFO] [stderr] 17 |     r_queues: Arc<Mutex<HashMap<SocketAddr, Arc<Mutex<Vec<Vec<u8>>>>>>>, 
[INFO] [stderr]    |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::type_complexity)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#type_complexity
[INFO] [stderr] 
[INFO] [stderr] warning: very complex type used. Consider factoring parts into `type` definitions
[INFO] [stderr]   --> src/peer/peer.rs:18:19
[INFO] [stderr]    |
[INFO] [stderr] 18 |     pub w_queues: Arc<Mutex<HashMap<SocketAddr, Arc<Mutex<Vec<Vec<u8>>>>>>>, 
[INFO] [stderr]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#type_complexity
[INFO] [stderr] 
[INFO] [stderr] warning: very complex type used. Consider factoring parts into `type` definitions
[INFO] [stderr]   --> src/peer/peer.rs:25:21
[INFO] [stderr]    |
[INFO] [stderr] 25 |     pub fn new(r_q: Arc<Mutex<HashMap<SocketAddr, Arc<Mutex<Vec<Vec<u8>>>>>>>, 
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#type_complexity
[INFO] [stderr] 
[INFO] [stderr] warning: very complex type used. Consider factoring parts into `type` definitions
[INFO] [stderr]   --> src/peer/peer.rs:26:21
[INFO] [stderr]    |
[INFO] [stderr] 26 |                w_q: Arc<Mutex<HashMap<SocketAddr, Arc<Mutex<Vec<Vec<u8>>>>>>>,
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#type_complexity
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `n` is only used to index `buf`.
[INFO] [stderr]   --> src/peer/peer.rs:68:18
[INFO] [stderr]    |
[INFO] [stderr] 68 |         for n in 0..end {
[INFO] [stderr]    |                  ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::needless_range_loop)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stderr] help: consider using an iterator
[INFO] [stderr]    |
[INFO] [stderr] 68 |         for <item> in buf.iter().take(end) {
[INFO] [stderr]    |             ^^^^^^    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]   --> src/peer/peer.rs:80:29
[INFO] [stderr]    |
[INFO] [stderr] 80 |             let key_clone = key.clone();
[INFO] [stderr]    |                             ^^^^^^^^^^^ help: try dereferencing it: `*key`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::clone_on_copy)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/peer/peer.rs:96:13
[INFO] [stderr]    |
[INFO] [stderr] 96 |             poll.register(&stream, Token(100_000_001), Ready::writable(), PollOpt::edge());
[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: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/peer/peer.rs:99:17
[INFO] [stderr]    |
[INFO] [stderr] 99 |                 poll.poll(&mut events, None);
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/peer/peer.rs:105:25
[INFO] [stderr]     |
[INFO] [stderr] 105 |                         client.readable(&mut poll);
[INFO] [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: very complex type used. Consider factoring parts into `type` definitions
[INFO] [stderr]   --> src/peer/server.rs:30:13
[INFO] [stderr]    |
[INFO] [stderr] 30 |     caches: Arc<Mutex<HashMap<SocketAddr, Arc<Mutex<Vec<Vec<u8>>>>>>>,
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#type_complexity
[INFO] [stderr] 
[INFO] [stderr] warning: very complex type used. Consider factoring parts into `type` definitions
[INFO] [stderr]   --> src/peer/server.rs:32:15
[INFO] [stderr]    |
[INFO] [stderr] 32 |     r_caches: Arc<Mutex<HashMap<SocketAddr, Arc<Mutex<Vec<Vec<u8>>>>>>>,
[INFO] [stderr]    |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#type_complexity
[INFO] [stderr] 
[INFO] [stderr] warning: very complex type used. Consider factoring parts into `type` definitions
[INFO] [stderr]   --> src/peer/server.rs:36:43
[INFO] [stderr]    |
[INFO] [stderr] 36 |     pub fn new(sock: TcpListener, caches: Arc<Mutex<HashMap<SocketAddr, Arc<Mutex<Vec<Vec<u8>>>>>>>, r_caches: Arc<Mutex<HashMap<SocketAddr, Arc<Mutex<Vec<Vec<u8>>>>>>>) -> Server {
[INFO] [stderr]    |                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#type_complexity
[INFO] [stderr] 
[INFO] [stderr] warning: very complex type used. Consider factoring parts into `type` definitions
[INFO] [stderr]   --> src/peer/server.rs:36:112
[INFO] [stderr]    |
[INFO] [stderr] 36 |     pub fn new(sock: TcpListener, caches: Arc<Mutex<HashMap<SocketAddr, Arc<Mutex<Vec<Vec<u8>>>>>>>, r_caches: Arc<Mutex<HashMap<SocketAddr, Arc<Mutex<Vec<Vec<u8>>>>>>>) -> Server {
[INFO] [stderr]    |                                                                                                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#type_complexity
[INFO] [stderr] 
[INFO] [stderr] warning: `if _ { .. } else { .. }` is an expression
[INFO] [stderr]    --> src/peer/server.rs:172:13
[INFO] [stderr]     |
[INFO] [stderr] 172 | /             let mut buf:Vec<u8> = vec![8u8,0,0,0];
[INFO] [stderr] 173 | |             if w_cache.lock().unwrap().len() != 0 {
[INFO] [stderr] 174 | |                 // println!("缓冲区有内容");
[INFO] [stderr] 175 | |                 buf = w_cache.lock().unwrap().pop().unwrap();
[INFO] [stderr] 176 | |             }
[INFO] [stderr]     | |_____________^ help: it is more idiomatic to write: `let <mut> buf = if w_cache.lock().unwrap().len() != 0 { w_cache.lock().unwrap().pop().unwrap() } else { < [ _ ] > :: into_vec ( box [ $ ( $ x ) , * ] ) };`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::useless_let_if_seq)] on by default
[INFO] [stderr]     = note: you might not need `mut` at all
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_let_if_seq
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/peer/server.rs:277:13
[INFO] [stderr]     |
[INFO] [stderr] 277 |             c.send_message(Rc::new(Vec::new()));
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: the loop variable `i` is only used to index `buf`.
[INFO] [stderr]   --> src/peer/client.rs:48:26
[INFO] [stderr]    |
[INFO] [stderr] 48 |                 for i in 0..n {
[INFO] [stderr]    |                          ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stderr] help: consider using an iterator
[INFO] [stderr]    |
[INFO] [stderr] 48 |                 for <item> in buf.iter().take(n) {
[INFO] [stderr]    |                     ^^^^^^    ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/peer/client.rs:60:9
[INFO] [stderr]    |
[INFO] [stderr] 60 |         poll.reregister(&self.sock, self.token, Ready::writable(), PollOpt::edge());
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/peer/client.rs:107:13
[INFO] [stderr]     |
[INFO] [stderr] 107 | /             poll.reregister(&self.sock, self.token, self.interest,
[INFO] [stderr] 108 | |                                   PollOpt::edge());
[INFO] [stderr]     | |___________________________________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]    --> src/peer/connection.rs:153:12
[INFO] [stderr]     |
[INFO] [stderr] 153 |         if buf.len() != 0 {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `!buf.is_empty()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::len_zero)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:11:9
[INFO] [stderr]    |
[INFO] [stderr] 11 |     let mut r_q = Arc::new(Mutex::new(HashMap::new()));
[INFO] [stderr]    |         ----^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:12:9
[INFO] [stderr]    |
[INFO] [stderr] 12 |     let mut w_q = Arc::new(Mutex::new(HashMap::new()));
[INFO] [stderr]    |         ----^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:13:9
[INFO] [stderr]    |
[INFO] [stderr] 13 |     let mut client_r = Arc::new(Mutex::new(Vec::new()));
[INFO] [stderr]    |         ----^^^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:14:9
[INFO] [stderr]    |
[INFO] [stderr] 14 |     let mut client_w = Arc::new(Mutex::new(Vec::new()));
[INFO] [stderr]    |         ----^^^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:15:9
[INFO] [stderr]    |
[INFO] [stderr] 15 |     let mut r_clone = r_q.clone();
[INFO] [stderr]    |         ----^^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:16:9
[INFO] [stderr]    |
[INFO] [stderr] 16 |     let mut w_clone = w_q.clone();
[INFO] [stderr]    |         ----^^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:17:9
[INFO] [stderr]    |
[INFO] [stderr] 17 |     let mut c_r = client_r.clone();
[INFO] [stderr]    |         ----^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:18:9
[INFO] [stderr]    |
[INFO] [stderr] 18 |     let mut c_w = client_w.clone();
[INFO] [stderr]    |         ----^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]   --> src/main.rs:32:33
[INFO] [stderr]    |
[INFO] [stderr] 32 |                 let key_clone = key.clone();
[INFO] [stderr]    |                                 ^^^^^^^^^^^ help: try dereferencing it: `*key`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::clone_on_copy)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: empty `loop {}` detected. You may want to either use `panic!()` or add `std::thread::sleep(..);` to the loop body.
[INFO] [stderr]   --> src/main.rs:62:5
[INFO] [stderr]    |
[INFO] [stderr] 62 |     loop {}
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::empty_loop)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#empty_loop
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:11:9
[INFO] [stderr]    |
[INFO] [stderr] 11 |     let mut r_q = Arc::new(Mutex::new(HashMap::new()));
[INFO] [stderr]    |         ----^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:12:9
[INFO] [stderr]    |
[INFO] [stderr] 12 |     let mut w_q = Arc::new(Mutex::new(HashMap::new()));
[INFO] [stderr]    |         ----^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:13:9
[INFO] [stderr]    |
[INFO] [stderr] 13 |     let mut client_r = Arc::new(Mutex::new(Vec::new()));
[INFO] [stderr]    |         ----^^^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:14:9
[INFO] [stderr]    |
[INFO] [stderr] 14 |     let mut client_w = Arc::new(Mutex::new(Vec::new()));
[INFO] [stderr]    |         ----^^^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:15:9
[INFO] [stderr]    |
[INFO] [stderr] 15 |     let mut r_clone = r_q.clone();
[INFO] [stderr]    |         ----^^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:16:9
[INFO] [stderr]    |
[INFO] [stderr] 16 |     let mut w_clone = w_q.clone();
[INFO] [stderr]    |         ----^^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:17:9
[INFO] [stderr]    |
[INFO] [stderr] 17 |     let mut c_r = client_r.clone();
[INFO] [stderr]    |         ----^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:18:9
[INFO] [stderr]    |
[INFO] [stderr] 18 |     let mut c_w = client_w.clone();
[INFO] [stderr]    |         ----^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: using `clone` on a `Copy` type
[INFO] [stderr]   --> src/main.rs:32:33
[INFO] [stderr]    |
[INFO] [stderr] 32 |                 let key_clone = key.clone();
[INFO] [stderr]    |                                 ^^^^^^^^^^^ help: try dereferencing it: `*key`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::clone_on_copy)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
[INFO] [stderr] 
[INFO] [stderr] warning: empty `loop {}` detected. You may want to either use `panic!()` or add `std::thread::sleep(..);` to the loop body.
[INFO] [stderr]   --> src/main.rs:62:5
[INFO] [stderr]    |
[INFO] [stderr] 62 |     loop {}
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::empty_loop)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#empty_loop
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.22s
[INFO] running `"docker" "inspect" "7cd7e712103fbc2ccad8070d3915d60de085ca876b6546fba3cf014cc2ca68ae"`
[INFO] running `"docker" "rm" "-f" "7cd7e712103fbc2ccad8070d3915d60de085ca876b6546fba3cf014cc2ca68ae"`
[INFO] [stdout] 7cd7e712103fbc2ccad8070d3915d60de085ca876b6546fba3cf014cc2ca68ae