warning: transmute used without annotations
   --> crates/shadowsocks-service/src/local/tun/tcp.rs:172:38
    |
172 |         let recv_buf = unsafe { mem::transmute::<_, &mut [u8]>(buf.unfilled_mut()) };
    |                                      ^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider adding missing annotations: `transmute::<&mut [std::mem::MaybeUninit<u8>], &mut [u8]>`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#missing_transmute_annotations
    = note: `#[warn(clippy::missing_transmute_annotations)]` on by default

warning: this `match` can be collapsed into the outer `if let`
  --> crates/shadowsocks-service/src/local/redir/udprelay/sys/unix/linux.rs:77:21
   |
77 | /                     match errno {
78 | |                         libc::ENOPROTOOPT => {
79 | |                             // SO_REUSEPORT is supported after 3.9
80 | |                             trace!("failed to set SO_REUSEPORT, error: {}", err);
...  |
85 | |                         }
86 | |                     }
   | |_____________________^
   |
help: the outer pattern can be modified to include the inner pattern
  --> crates/shadowsocks-service/src/local/redir/udprelay/sys/unix/linux.rs:76:29
   |
76 |                 if let Some(errno) = err.raw_os_error() {
   |                             ^^^^^ replace this binding
77 |                     match errno {
78 |                         libc::ENOPROTOOPT => {
   |                         ^^^^^^^^^^^^^^^^^ with this pattern
   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_match
   = note: `#[warn(clippy::collapsible_match)]` on by default

warning: casting the result of `i32::abs()` to u32
   --> crates/shadowsocks-service/src/local/loadbalancing/server_stat.rs:191:30
    |
191 |                     .map(|s| (*s as i32 - self.data.latency_median as i32).abs() as u32)
    |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace with: `(*s as i32 - self.data.latency_median as i32).unsigned_abs()`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_abs_to_unsigned
    = note: `#[warn(clippy::cast_abs_to_unsigned)]` on by default

warning: using `clone` on type `ServerStatData` which implements the `Copy` trait
  --> crates/shadowsocks-service/src/local/loadbalancing/server_data.rs:69:9
   |
69 |         self.stat_data.lock().await.data().clone()
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try dereferencing it: `*self.stat_data.lock().await.data()`
   |
   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy

warning: using `clone` on type `ServerStatData` which implements the `Copy` trait
  --> crates/shadowsocks-service/src/local/loadbalancing/server_data.rs:56:38
   |
56 |             (stat.push_score(score), stat.data().clone())
   |                                      ^^^^^^^^^^^^^^^^^^^ help: try dereferencing it: `*stat.data()`
   |
   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy
   = note: `#[warn(clippy::clone_on_copy)]` on by default

warning: redundant pattern matching, consider using `is_ok()`
   --> crates/shadowsocks-service/src/local/loadbalancing/ping_balancer.rs:919:16
    |
919 |         if let Ok(..) = response.parse(&buf) {
    |         -------^^^^^^----------------------- help: try: `if response.parse(&buf).is_ok()`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern_matching

warning: redundant pattern matching, consider using `is_ok()`
   --> crates/shadowsocks-service/src/local/loadbalancing/ping_balancer.rs:878:16
    |
878 |         if let Ok(..) = response.parse(&buf) {
    |         -------^^^^^^----------------------- help: try: `if response.parse(&buf).is_ok()`
    |
    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern_matching
    = note: `#[warn(clippy::redundant_pattern_matching)]` on by default