[INFO] fetching crate rsmtp 0.1.3...
[INFO] linting rsmtp-0.1.3 against nightly for clippy-nonminimal_bool-denied
[INFO] extracting crate rsmtp 0.1.3 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate rsmtp 0.1.3
[INFO] finished tweaking crates.io crate rsmtp 0.1.3
[INFO] tweaked toml for crates.io crate rsmtp 0.1.3 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate rsmtp 0.1.3 on toolchain nightly
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate rsmtp 0.1.3 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+nightly" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 332271b01dbf600e43d9e55fbf5a7a20368200d0bd5945da56d7b19c5ab40d45
[INFO] running `Command { std: "docker" "start" "-a" "332271b01dbf600e43d9e55fbf5a7a20368200d0bd5945da56d7b19c5ab40d45", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "332271b01dbf600e43d9e55fbf5a7a20368200d0bd5945da56d7b19c5ab40d45", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "332271b01dbf600e43d9e55fbf5a7a20368200d0bd5945da56d7b19c5ab40d45", kill_on_drop: false }`
[INFO] [stdout] 332271b01dbf600e43d9e55fbf5a7a20368200d0bd5945da56d7b19c5ab40d45
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+nightly" "clippy" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 373613fac05e89dfe6e5ee6a26ea33438f34cc8260789769b91e657628cb865c
[INFO] running `Command { std: "docker" "start" "-a" "373613fac05e89dfe6e5ee6a26ea33438f34cc8260789769b91e657628cb865c", kill_on_drop: false }`
[INFO] [stderr]     Checking rsmtp v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: redundant field names in struct initialization
[INFO] [stdout]    --> src/common/mailbox.rs:218:17
[INFO] [stdout]     |
[INFO] [stdout] 218 |                 local_part: local_part,
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `local_part`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stdout]     = note: `#[warn(clippy::redundant_field_names)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: redundant field names in struct initialization
[INFO] [stdout]    --> src/common/mailbox.rs:218:17
[INFO] [stdout]     |
[INFO] [stdout] 218 |                 local_part: local_part,
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `local_part`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stdout]     = note: `#[warn(clippy::redundant_field_names)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: redundant field names in struct initialization
[INFO] [stdout]    --> src/common/mailbox.rs:219:17
[INFO] [stdout]     |
[INFO] [stdout] 219 |                 foreign_part: foreign_part,
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `foreign_part`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: redundant field names in struct initialization
[INFO] [stdout]    --> src/common/mailbox.rs:219:17
[INFO] [stdout]     |
[INFO] [stdout] 219 |                 foreign_part: foreign_part,
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `foreign_part`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: redundant field names in struct initialization
[INFO] [stdout]    --> src/common/stream.rs:112:13
[INFO] [stdout]     |
[INFO] [stdout] 112 |             max_line_size: max_line_size,
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `max_line_size`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: redundant field names in struct initialization
[INFO] [stdout]    --> src/common/stream.rs:117:13
[INFO] [stdout]     |
[INFO] [stdout] 117 |             debug: debug,
[INFO] [stdout]     |             ^^^^^^^^^^^^ help: replace it with: `debug`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: redundant field names in struct initialization
[INFO] [stdout]    --> src/common/stream.rs:224:13
[INFO] [stdout]     |
[INFO] [stdout] 224 |             debug: debug,
[INFO] [stdout]     |             ^^^^^^^^^^^^ help: replace it with: `debug`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::error::Error`
[INFO] [stdout]   --> src/common/stream.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 | use std::error::Error;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: redundant field names in struct initialization
[INFO] [stdout]    --> src/common/stream.rs:112:13
[INFO] [stdout]     |
[INFO] [stdout] 112 |             max_line_size: max_line_size,
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `max_line_size`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: redundant field names in struct initialization
[INFO] [stdout]    --> src/common/stream.rs:117:13
[INFO] [stdout]     |
[INFO] [stdout] 117 |             debug: debug,
[INFO] [stdout]     |             ^^^^^^^^^^^^ help: replace it with: `debug`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: redundant field names in struct initialization
[INFO] [stdout]    --> src/common/stream.rs:224:13
[INFO] [stdout]     |
[INFO] [stdout] 224 |             debug: debug,
[INFO] [stdout]     |             ^^^^^^^^^^^^ help: replace it with: `debug`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: redundant field names in struct initialization
[INFO] [stdout]    --> src/server/mod.rs:159:13
[INFO] [stdout]     |
[INFO] [stdout] 159 |             callback: callback,
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^ help: replace it with: `callback`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: redundant field names in struct initialization
[INFO] [stdout]    --> src/server/mod.rs:253:13
[INFO] [stdout]     |
[INFO] [stdout] 253 |             container: container,
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^ help: replace it with: `container`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: redundant field names in struct initialization
[INFO] [stdout]    --> src/server/mod.rs:159:13
[INFO] [stdout]     |
[INFO] [stdout] 159 |             callback: callback,
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^ help: replace it with: `callback`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: redundant field names in struct initialization
[INFO] [stdout]    --> src/server/mod.rs:253:13
[INFO] [stdout]     |
[INFO] [stdout] 253 |             container: container,
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^ help: replace it with: `container`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `ready` is never used
[INFO] [stdout]    --> src/server/mod.rs:175:8
[INFO] [stdout]     |
[INFO] [stdout] 134 | impl<CT, ST> Command<CT, ST> {
[INFO] [stdout]     | ---------------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 175 |     fn ready(&self) -> bool {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `set_hostname`, `set_max_recipients`, `set_max_message_size`, `increase_max_command_line_size`, and `increase_max_text_line_size` are never used
[INFO] [stdout]    --> src/server/mod.rs:257:8
[INFO] [stdout]     |
[INFO] [stdout] 236 | impl<CT: 'static + Send + Sync + Clone> Server<CT> {
[INFO] [stdout]     | -------------------------------------------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 257 |     fn set_hostname(&mut self, hostname: &str) {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 261 |     fn set_max_recipients(&mut self, max: usize) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 268 |     fn set_max_message_size(&mut self, max: usize) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 283 |     fn increase_max_command_line_size(&mut self, bytes: usize) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 287 |     fn increase_max_text_line_size(&mut self, bytes: usize) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the variable `index` is used as a loop counter
[INFO] [stdout]   --> src/common/stream.rs:87:5
[INFO] [stdout]    |
[INFO] [stdout] 87 |     for byte in buf.iter() {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `for (index, byte) in buf.iter().enumerate()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#explicit_counter_loop
[INFO] [stdout]    = note: `#[warn(clippy::explicit_counter_loop)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: you seem to be trying to use `match` for destructuring a single pattern. Consider using `if let`
[INFO] [stdout]    --> src/common/stream.rs:125:9
[INFO] [stdout]     |
[INFO] [stdout] 125 | /         match self.last_crlf {
[INFO] [stdout] 126 | |             Some(p) => {
[INFO] [stdout] ...   |
[INFO] [stdout] 132 | |             _ => {}
[INFO] [stdout] 133 | |         }
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stdout]     = note: `#[warn(clippy::single_match)]` on by default
[INFO] [stdout] help: try
[INFO] [stdout]     |
[INFO] [stdout] 125 ~         if let Some(p) = self.last_crlf {
[INFO] [stdout] 126 +             // TODO: This could probably be optimised by shifting bytes instead
[INFO] [stdout] 127 +             // of re-allocating.
[INFO] [stdout] 128 +             self.buf = self.buf[p + 2..].to_vec();
[INFO] [stdout] 129 +             self.buf.reserve(self.max_line_size);
[INFO] [stdout] 130 +         }
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this call to `as_ref` does nothing
[INFO] [stdout]    --> src/common/stream.rs:203:69
[INFO] [stdout]     |
[INFO] [stdout] 203 |                 println!("rsmtp: imsg: {}", String::from_utf8_lossy(bytes.as_ref()));
[INFO] [stdout]     |                                                                     ^^^^^^^^^^^^^^ help: try: `bytes`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_asref
[INFO] [stdout]     = note: `#[warn(clippy::useless_asref)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: length comparison to zero
[INFO] [stdout]   --> src/common/utils.rs:31:8
[INFO] [stdout]    |
[INFO] [stdout] 31 |     if s.len() > 0 && is_alnum(s.chars().nth(0).unwrap()) {
[INFO] [stdout]    |        ^^^^^^^^^^^ help: using `!is_empty` is clearer and more explicit: `!s.is_empty()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stdout]    = note: `#[warn(clippy::len_zero)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: called `.nth(0)` on a `std::iter::Iterator`, when `.next()` is equivalent
[INFO] [stdout]   --> src/common/utils.rs:31:32
[INFO] [stdout]    |
[INFO] [stdout] 31 |     if s.len() > 0 && is_alnum(s.chars().nth(0).unwrap()) {
[INFO] [stdout]    |                                ^^^^^^^^^^^^^^^^ help: try calling `.next()` instead of `.nth(0)`: `s.chars().next()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#iter_nth_zero
[INFO] [stdout]    = note: `#[warn(clippy::iter_nth_zero)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: match expression looks like `matches!` macro
[INFO] [stdout]    --> src/common/utils.rs:198:5
[INFO] [stdout]     |
[INFO] [stdout] 198 | /     match c {
[INFO] [stdout] 199 | |         '!' | '#' | '$' | '%' | '&' | '\'' | '*' | '+' | '-' | '/' | '=' | '?' | '^' | '_'
[INFO] [stdout] 200 | |         | '`' | '{' | '|' | '}' | '~' => true,
[INFO] [stdout] 201 | |         'A'..='Z' => true,
[INFO] [stdout] ...   |
[INFO] [stdout] 204 | |         _ => false,
[INFO] [stdout] 205 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_like_matches_macro
[INFO] [stdout]     = note: `#[warn(clippy::match_like_matches_macro)]` on by default
[INFO] [stdout] help: use `matches!` directly
[INFO] [stdout]     |
[INFO] [stdout] 198 ~     matches!(c, '!' | '#' | '$' | '%' | '&' | '\'' | '*' | '+' | '-' | '/' | '=' | '?' | '^' | '_'
[INFO] [stdout] 199 +         | '`' | '{' | '|' | '}' | '~' | 'A'..='Z' | 'a'..='z' | '0'..='9')
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: match expression looks like `matches!` macro
[INFO] [stdout]    --> src/common/utils.rs:266:5
[INFO] [stdout]     |
[INFO] [stdout] 266 | /     match c {
[INFO] [stdout] 267 | |         'A'..='Z' | 'a'..='z' | '0'..='9' => true,
[INFO] [stdout] 268 | |         _ => false,
[INFO] [stdout] 269 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_like_matches_macro
[INFO] [stdout] help: use `matches!` directly
[INFO] [stdout]     |
[INFO] [stdout] 266 -     match c {
[INFO] [stdout] 267 -         'A'..='Z' | 'a'..='z' | '0'..='9' => true,
[INFO] [stdout] 268 -         _ => false,
[INFO] [stdout] 269 -     }
[INFO] [stdout] 266 +     matches!(c, 'A'..='Z' | 'a'..='z' | '0'..='9')
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: called `.nth(0)` on a `std::iter::Iterator`, when `.next()` is equivalent
[INFO] [stdout]    --> src/common/utils.rs:299:19
[INFO] [stdout]     |
[INFO] [stdout] 299 |     if sl >= 2 && s.chars().nth(0).unwrap() == '"' {
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^ help: try calling `.next()` instead of `.nth(0)`: `s.chars().next()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#iter_nth_zero
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: match expression looks like `matches!` macro
[INFO] [stdout]    --> src/common/utils.rs:351:5
[INFO] [stdout]     |
[INFO] [stdout] 351 | /     match c as isize {
[INFO] [stdout] 352 | |         32..=33 | 35..=91 | 93..=126 => true,
[INFO] [stdout] 353 | |         _ => false,
[INFO] [stdout] 354 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_like_matches_macro
[INFO] [stdout] help: use `matches!` directly
[INFO] [stdout]     |
[INFO] [stdout] 351 -     match c as isize {
[INFO] [stdout] 352 -         32..=33 | 35..=91 | 93..=126 => true,
[INFO] [stdout] 353 -         _ => false,
[INFO] [stdout] 354 -     }
[INFO] [stdout] 351 +     matches!(c as isize, 32..=33 | 35..=91 | 93..=126)
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: called `.nth(0)` on a `std::iter::Iterator`, when `.next()` is equivalent
[INFO] [stdout]    --> src/common/utils.rs:396:23
[INFO] [stdout]     |
[INFO] [stdout] 396 |     if s.len() > 1 && s.chars().nth(0).unwrap() == '@' {
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^ help: try calling `.next()` instead of `.nth(0)`: `s.chars().next()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#iter_nth_zero
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this loop could be written as a `while let` loop
[INFO] [stdout]    --> src/common/utils.rs:425:5
[INFO] [stdout]     |
[INFO] [stdout] 425 | /     loop {
[INFO] [stdout] 426 | |         // Get the current source route.
[INFO] [stdout] 427 | |         match get_at_domain(&s[len..]) {
[INFO] [stdout] 428 | |             Some(ad) => {
[INFO] [stdout] ...   |
[INFO] [stdout] 442 | |     }
[INFO] [stdout]     | |_____^ help: try: `while let Some(ad) = get_at_domain(&s[len..]) { .. }`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#while_let_loop
[INFO] [stdout]     = note: `#[warn(clippy::while_let_loop)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: called `.nth(0)` on a `std::iter::Iterator`, when `.next()` is equivalent
[INFO] [stdout]    --> src/common/utils.rs:506:12
[INFO] [stdout]     |
[INFO] [stdout] 506 |         || ip.chars().nth(0).unwrap() != '['
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^ help: try calling `.next()` instead of `.nth(0)`: `ip.chars().next()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#iter_nth_zero
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this returns a `Result<_, ()>`
[INFO] [stdout]   --> src/server/commands/mod.rs:42:5
[INFO] [stdout]    |
[INFO] [stdout] 42 |     fn handle_domain(&mut self, domain: &str) -> Result<(), ()>;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: use a custom `Error` type instead
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#result_unit_err
[INFO] [stdout]    = note: `#[warn(clippy::result_unit_err)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this returns a `Result<_, ()>`
[INFO] [stdout]   --> src/server/commands/mod.rs:51:5
[INFO] [stdout]    |
[INFO] [stdout] 51 |     fn handle_sender_address(&mut self, mailbox: Option<Mailbox>) -> Result<(), ()>;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: use a custom `Error` type instead
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#result_unit_err
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this returns a `Result<_, ()>`
[INFO] [stdout]   --> src/server/commands/mod.rs:57:5
[INFO] [stdout]    |
[INFO] [stdout] 57 |     fn handle_receiver_address(&mut self, mailbox: Mailbox) -> Result<(), ()>;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: use a custom `Error` type instead
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#result_unit_err
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: you should consider adding a `Default` implementation for `Command<CT, ST>`
[INFO] [stdout]    --> src/server/mod.rs:136:5
[INFO] [stdout]     |
[INFO] [stdout] 136 | /     pub fn new() -> Command<CT, ST> {
[INFO] [stdout] 137 | |         Command {
[INFO] [stdout] 138 | |             start: None,
[INFO] [stdout] 139 | |             front_middleware: None,
[INFO] [stdout] 140 | |         }
[INFO] [stdout] 141 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#new_without_default
[INFO] [stdout]     = note: `#[warn(clippy::new_without_default)]` on by default
[INFO] [stdout] help: try adding this
[INFO] [stdout]     |
[INFO] [stdout] 134 + impl<CT, ST> Default for Command<CT, ST> {
[INFO] [stdout] 135 +     fn default() -> Self {
[INFO] [stdout] 136 +         Self::new()
[INFO] [stdout] 137 +     }
[INFO] [stdout] 138 + }
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the following explicit lifetimes could be elided: 'a
[INFO] [stdout]    --> src/server/mod.rs:148:24
[INFO] [stdout]     |
[INFO] [stdout] 148 |     fn last_middleware<'a>(prev: &'a mut NextMiddleware<CT, ST>) -> &'a mut NextMiddleware<CT, ST> {
[INFO] [stdout]     |                        ^^         ^^                                 ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_lifetimes
[INFO] [stdout]     = note: `#[warn(clippy::needless_lifetimes)]` on by default
[INFO] [stdout] help: elide the lifetimes
[INFO] [stdout]     |
[INFO] [stdout] 148 -     fn last_middleware<'a>(prev: &'a mut NextMiddleware<CT, ST>) -> &'a mut NextMiddleware<CT, ST> {
[INFO] [stdout] 148 +     fn last_middleware(prev: &mut NextMiddleware<CT, ST>) -> &mut NextMiddleware<CT, ST> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: creating a new box
[INFO] [stdout]    --> src/server/mod.rs:169:17
[INFO] [stdout]     |
[INFO] [stdout] 169 | /                 Command::last_middleware(self.front_middleware.as_mut().unwrap()).next =
[INFO] [stdout] 170 | |                     Box::new(next);
[INFO] [stdout]     | |__________________________________^ help: replace existing content with inner value instead: `*Command::last_middleware(self.front_middleware.as_mut().unwrap()).next = next`
[INFO] [stdout]     |
[INFO] [stdout]     = note: this creates a needless allocation
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#replace_box
[INFO] [stdout]     = note: `#[warn(clippy::replace_box)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: length comparison to zero
[INFO] [stdout]    --> src/server/mod.rs:408:12
[INFO] [stdout]     |
[INFO] [stdout] 408 |         if self.config.hostname.len() == 0 {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `self.config.hostname.is_empty()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `ready` is never used
[INFO] [stdout]    --> src/server/mod.rs:175:8
[INFO] [stdout]     |
[INFO] [stdout] 134 | impl<CT, ST> Command<CT, ST> {
[INFO] [stdout]     | ---------------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 175 |     fn ready(&self) -> bool {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `set_hostname`, `set_max_recipients`, `set_max_message_size`, `increase_max_command_line_size`, and `increase_max_text_line_size` are never used
[INFO] [stdout]    --> src/server/mod.rs:257:8
[INFO] [stdout]     |
[INFO] [stdout] 236 | impl<CT: 'static + Send + Sync + Clone> Server<CT> {
[INFO] [stdout]     | -------------------------------------------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 257 |     fn set_hostname(&mut self, hostname: &str) {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 261 |     fn set_max_recipients(&mut self, max: usize) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 268 |     fn set_max_message_size(&mut self, max: usize) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 283 |     fn increase_max_command_line_size(&mut self, bytes: usize) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 287 |     fn increase_max_text_line_size(&mut self, bytes: usize) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `repeat().take()` can be written more concisely
[INFO] [stdout]    --> src/common/mailbox.rs:227:35
[INFO] [stdout]     |
[INFO] [stdout] 227 |     let mut s = String::from_iter(repeat('a').take(MAX_MAILBOX_LOCAL_PART_LEN));
[INFO] [stdout]     |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `repeat_n()` instead: `std::iter::repeat_n('a', MAX_MAILBOX_LOCAL_PART_LEN)`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_repeat_n
[INFO] [stdout]     = note: `#[warn(clippy::manual_repeat_n)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `repeat().take()` can be written more concisely
[INFO] [stdout]    --> src/common/mailbox.rs:230:35
[INFO] [stdout]     |
[INFO] [stdout] 230 |     let mut s = String::from_iter(repeat('a').take(MAX_MAILBOX_LOCAL_PART_LEN + 1));
[INFO] [stdout]     |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `repeat_n()` instead: `std::iter::repeat_n('a', MAX_MAILBOX_LOCAL_PART_LEN + 1)`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_repeat_n
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `repeat().take()` can be written more concisely
[INFO] [stdout]    --> src/common/mailbox.rs:257:53
[INFO] [stdout]     |
[INFO] [stdout] 257 |             ("rust@".to_owned() + String::from_iter(repeat('a').take(MAX_DOMAIN_LEN)).as_str())
[INFO] [stdout]     |                                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `repeat_n()` instead: `std::iter::repeat_n('a', MAX_DOMAIN_LEN)`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_repeat_n
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `repeat().take()` can be written more concisely
[INFO] [stdout]    --> src/common/mailbox.rs:264:53
[INFO] [stdout]     |
[INFO] [stdout] 264 |             ("rust@".to_owned() + String::from_iter(repeat('a').take(MAX_DOMAIN_LEN + 1)).as_ref())
[INFO] [stdout]     |                                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `repeat_n()` instead: `std::iter::repeat_n('a', MAX_DOMAIN_LEN + 1)`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_repeat_n
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `repeat().take()` can be written more concisely
[INFO] [stdout]    --> src/common/mailbox.rs:269:49
[INFO] [stdout]     |
[INFO] [stdout] 269 |         ("rust@".to_owned() + String::from_iter(repeat('a').take(MAX_MAILBOX_LEN - 5)).as_str())
[INFO] [stdout]     |                                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `repeat_n()` instead: `std::iter::repeat_n('a', MAX_MAILBOX_LEN - 5)`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_repeat_n
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `repeat().take()` can be written more concisely
[INFO] [stdout]    --> src/common/mailbox.rs:277:37
[INFO] [stdout]     |
[INFO] [stdout] 277 |                 + String::from_iter(repeat('a').take(MAX_MAILBOX_LEN - 4)).as_str())
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using `repeat_n()` instead: `std::iter::repeat_n('a', MAX_MAILBOX_LEN - 4)`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_repeat_n
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the variable `index` is used as a loop counter
[INFO] [stdout]   --> src/common/stream.rs:87:5
[INFO] [stdout]    |
[INFO] [stdout] 87 |     for byte in buf.iter() {
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^ help: consider using: `for (index, byte) in buf.iter().enumerate()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#explicit_counter_loop
[INFO] [stdout]    = note: `#[warn(clippy::explicit_counter_loop)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: you seem to be trying to use `match` for destructuring a single pattern. Consider using `if let`
[INFO] [stdout]    --> src/common/stream.rs:125:9
[INFO] [stdout]     |
[INFO] [stdout] 125 | /         match self.last_crlf {
[INFO] [stdout] 126 | |             Some(p) => {
[INFO] [stdout] ...   |
[INFO] [stdout] 132 | |             _ => {}
[INFO] [stdout] 133 | |         }
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stdout]     = note: `#[warn(clippy::single_match)]` on by default
[INFO] [stdout] help: try
[INFO] [stdout]     |
[INFO] [stdout] 125 ~         if let Some(p) = self.last_crlf {
[INFO] [stdout] 126 +             // TODO: This could probably be optimised by shifting bytes instead
[INFO] [stdout] 127 +             // of re-allocating.
[INFO] [stdout] 128 +             self.buf = self.buf[p + 2..].to_vec();
[INFO] [stdout] 129 +             self.buf.reserve(self.max_line_size);
[INFO] [stdout] 130 +         }
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this call to `as_ref` does nothing
[INFO] [stdout]    --> src/common/stream.rs:203:69
[INFO] [stdout]     |
[INFO] [stdout] 203 |                 println!("rsmtp: imsg: {}", String::from_utf8_lossy(bytes.as_ref()));
[INFO] [stdout]     |                                                                     ^^^^^^^^^^^^^^ help: try: `bytes`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_asref
[INFO] [stdout]     = note: `#[warn(clippy::useless_asref)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]    --> src/common/stream.rs:303:13
[INFO] [stdout]     |
[INFO] [stdout] 303 |     assert!(!stream.read_line().is_ok());
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `stream.read_line().is_err()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout]     = note: `#[warn(clippy::nonminimal_bool)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]    --> src/common/stream.rs:310:13
[INFO] [stdout]     |
[INFO] [stdout] 310 |     assert!(!stream.read_line().is_ok());
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `stream.read_line().is_err()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]    --> src/common/stream.rs:317:13
[INFO] [stdout]     |
[INFO] [stdout] 317 |     assert!(!stream.read_line().is_ok());
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `stream.read_line().is_err()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]    --> src/common/stream.rs:330:13
[INFO] [stdout]     |
[INFO] [stdout] 330 |     assert!(!stream.read_line().is_ok());
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `stream.read_line().is_err()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]    --> src/common/stream.rs:343:13
[INFO] [stdout]     |
[INFO] [stdout] 343 |     assert!(!stream.read_line().is_ok());
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `stream.read_line().is_err()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]    --> src/common/stream.rs:362:13
[INFO] [stdout]     |
[INFO] [stdout] 362 |     assert!(!stream.read_line().is_ok());
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `stream.read_line().is_err()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]    --> src/common/stream.rs:406:13
[INFO] [stdout]     |
[INFO] [stdout] 406 |     assert!(!stream.read_line().is_ok());
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `stream.read_line().is_err()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded late initialization
[INFO] [stdout]    --> src/common/stream.rs:296:5
[INFO] [stdout]     |
[INFO] [stdout] 296 |     let expected: String;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^ created here
[INFO] [stdout] ...
[INFO] [stdout] 364 |     expected = String::from_iter(repeat('x').take(62));
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ initialised here
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_late_init
[INFO] [stdout]     = note: `#[warn(clippy::needless_late_init)]` on by default
[INFO] [stdout] help: move the declaration `expected` here
[INFO] [stdout]     |
[INFO] [stdout] 296 ~     
[INFO] [stdout] 297 |
[INFO] [stdout] ...
[INFO] [stdout] 363 |
[INFO] [stdout] 364 ~     let expected: String = String::from_iter(repeat('x').take(62));
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `to_owned` call clones the `Cow<'_, str>` itself and does not cause its contents to become owned
[INFO] [stdout]    --> src/common/stream.rs:325:9
[INFO] [stdout]     |
[INFO] [stdout] 325 | /         String::from_utf8_lossy(stream.read_line().unwrap().as_ref())
[INFO] [stdout] 326 | |             .to_owned()
[INFO] [stdout]     | |_______________________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#suspicious_to_owned
[INFO] [stdout]     = note: `#[warn(clippy::suspicious_to_owned)]` on by default
[INFO] [stdout] help: depending on intent, either make the `Cow` an `Owned` variant
[INFO] [stdout]     |
[INFO] [stdout] 326 |             .into_owned()
[INFO] [stdout]     |              ++
[INFO] [stdout] help: or clone the `Cow` itself
[INFO] [stdout]     |
[INFO] [stdout] 326 -             .to_owned()
[INFO] [stdout] 326 +             .clone()
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this call to `as_ref` does nothing
[INFO] [stdout]    --> src/common/stream.rs:325:33
[INFO] [stdout]     |
[INFO] [stdout] 325 |         String::from_utf8_lossy(stream.read_line().unwrap().as_ref())
[INFO] [stdout]     |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `stream.read_line().unwrap()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_asref
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `to_owned` call clones the `Cow<'_, str>` itself and does not cause its contents to become owned
[INFO] [stdout]    --> src/common/stream.rs:338:9
[INFO] [stdout]     |
[INFO] [stdout] 338 | /         String::from_utf8_lossy(stream.read_line().unwrap().as_ref())
[INFO] [stdout] 339 | |             .to_owned()
[INFO] [stdout]     | |_______________________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#suspicious_to_owned
[INFO] [stdout] help: depending on intent, either make the `Cow` an `Owned` variant
[INFO] [stdout]     |
[INFO] [stdout] 339 |             .into_owned()
[INFO] [stdout]     |              ++
[INFO] [stdout] help: or clone the `Cow` itself
[INFO] [stdout]     |
[INFO] [stdout] 339 -             .to_owned()
[INFO] [stdout] 339 +             .clone()
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this call to `as_ref` does nothing
[INFO] [stdout]    --> src/common/stream.rs:338:33
[INFO] [stdout]     |
[INFO] [stdout] 338 |         String::from_utf8_lossy(stream.read_line().unwrap().as_ref())
[INFO] [stdout]     |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `stream.read_line().unwrap()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_asref
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `to_owned` call clones the `Cow<'_, str>` itself and does not cause its contents to become owned
[INFO] [stdout]    --> src/common/stream.rs:351:9
[INFO] [stdout]     |
[INFO] [stdout] 351 | /         String::from_utf8_lossy(stream.read_line().unwrap().as_ref())
[INFO] [stdout] 352 | |             .to_owned()
[INFO] [stdout]     | |_______________________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#suspicious_to_owned
[INFO] [stdout] help: depending on intent, either make the `Cow` an `Owned` variant
[INFO] [stdout]     |
[INFO] [stdout] 352 |             .into_owned()
[INFO] [stdout]     |              ++
[INFO] [stdout] help: or clone the `Cow` itself
[INFO] [stdout]     |
[INFO] [stdout] 352 -             .to_owned()
[INFO] [stdout] 352 +             .clone()
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this call to `as_ref` does nothing
[INFO] [stdout]    --> src/common/stream.rs:351:33
[INFO] [stdout]     |
[INFO] [stdout] 351 |         String::from_utf8_lossy(stream.read_line().unwrap().as_ref())
[INFO] [stdout]     |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `stream.read_line().unwrap()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_asref
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `to_owned` call clones the `Cow<'_, str>` itself and does not cause its contents to become owned
[INFO] [stdout]    --> src/common/stream.rs:357:9
[INFO] [stdout]     |
[INFO] [stdout] 357 | /         String::from_utf8_lossy(stream.read_line().unwrap().as_ref())
[INFO] [stdout] 358 | |             .to_owned()
[INFO] [stdout]     | |_______________________^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#suspicious_to_owned
[INFO] [stdout] help: depending on intent, either make the `Cow` an `Owned` variant
[INFO] [stdout]     |
[INFO] [stdout] 358 |             .into_owned()
[INFO] [stdout]     |              ++
[INFO] [stdout] help: or clone the `Cow` itself
[INFO] [stdout]     |
[INFO] [stdout] 358 -             .to_owned()
[INFO] [stdout] 358 +             .clone()
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this call to `as_ref` does nothing
[INFO] [stdout]    --> src/common/stream.rs:357:33
[INFO] [stdout]     |
[INFO] [stdout] 357 |         String::from_utf8_lossy(stream.read_line().unwrap().as_ref())
[INFO] [stdout]     |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `stream.read_line().unwrap()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_asref
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `repeat().take()` can be written more concisely
[INFO] [stdout]    --> src/common/stream.rs:364:34
[INFO] [stdout]     |
[INFO] [stdout] 364 |     expected = String::from_iter(repeat('x').take(62));
[INFO] [stdout]     |                                  ^^^^^^^^^^^^^^^^^^^^ help: consider using `repeat_n()` instead: `std::iter::repeat_n('x', 62)`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_repeat_n
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `to_owned` call clones the `Cow<'_, str>` itself and does not cause its contents to become owned
[INFO] [stdout]    --> src/common/stream.rs:371:9
[INFO] [stdout]     |
[INFO] [stdout] 371 |         String::from_utf8_lossy(stream.read_line().unwrap().as_ref()).to_owned(),
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#suspicious_to_owned
[INFO] [stdout] help: depending on intent, either make the `Cow` an `Owned` variant
[INFO] [stdout]     |
[INFO] [stdout] 371 |         String::from_utf8_lossy(stream.read_line().unwrap().as_ref()).into_owned(),
[INFO] [stdout]     |                                                                       ++
[INFO] [stdout] help: or clone the `Cow` itself
[INFO] [stdout]     |
[INFO] [stdout] 371 -         String::from_utf8_lossy(stream.read_line().unwrap().as_ref()).to_owned(),
[INFO] [stdout] 371 +         String::from_utf8_lossy(stream.read_line().unwrap().as_ref()).clone(),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this call to `as_ref` does nothing
[INFO] [stdout]    --> src/common/stream.rs:371:33
[INFO] [stdout]     |
[INFO] [stdout] 371 |         String::from_utf8_lossy(stream.read_line().unwrap().as_ref()).to_owned(),
[INFO] [stdout]     |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `stream.read_line().unwrap()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_asref
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `to_owned` call clones the `Cow<'_, str>` itself and does not cause its contents to become owned
[INFO] [stdout]    --> src/common/stream.rs:375:9
[INFO] [stdout]     |
[INFO] [stdout] 375 |         String::from_utf8_lossy(stream.read_line().unwrap().as_ref()).to_owned(),
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#suspicious_to_owned
[INFO] [stdout] help: depending on intent, either make the `Cow` an `Owned` variant
[INFO] [stdout]     |
[INFO] [stdout] 375 |         String::from_utf8_lossy(stream.read_line().unwrap().as_ref()).into_owned(),
[INFO] [stdout]     |                                                                       ++
[INFO] [stdout] help: or clone the `Cow` itself
[INFO] [stdout]     |
[INFO] [stdout] 375 -         String::from_utf8_lossy(stream.read_line().unwrap().as_ref()).to_owned(),
[INFO] [stdout] 375 +         String::from_utf8_lossy(stream.read_line().unwrap().as_ref()).clone(),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this call to `as_ref` does nothing
[INFO] [stdout]    --> src/common/stream.rs:375:33
[INFO] [stdout]     |
[INFO] [stdout] 375 |         String::from_utf8_lossy(stream.read_line().unwrap().as_ref()).to_owned(),
[INFO] [stdout]     |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `stream.read_line().unwrap()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_asref
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `to_owned` call clones the `Cow<'_, str>` itself and does not cause its contents to become owned
[INFO] [stdout]    --> src/common/stream.rs:379:9
[INFO] [stdout]     |
[INFO] [stdout] 379 |         String::from_utf8_lossy(stream.read_line().unwrap().as_ref()).to_owned(),
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#suspicious_to_owned
[INFO] [stdout] help: depending on intent, either make the `Cow` an `Owned` variant
[INFO] [stdout]     |
[INFO] [stdout] 379 |         String::from_utf8_lossy(stream.read_line().unwrap().as_ref()).into_owned(),
[INFO] [stdout]     |                                                                       ++
[INFO] [stdout] help: or clone the `Cow` itself
[INFO] [stdout]     |
[INFO] [stdout] 379 -         String::from_utf8_lossy(stream.read_line().unwrap().as_ref()).to_owned(),
[INFO] [stdout] 379 +         String::from_utf8_lossy(stream.read_line().unwrap().as_ref()).clone(),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this call to `as_ref` does nothing
[INFO] [stdout]    --> src/common/stream.rs:379:33
[INFO] [stdout]     |
[INFO] [stdout] 379 |         String::from_utf8_lossy(stream.read_line().unwrap().as_ref()).to_owned(),
[INFO] [stdout]     |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `stream.read_line().unwrap()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_asref
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `to_owned` call clones the `Cow<'_, str>` itself and does not cause its contents to become owned
[INFO] [stdout]    --> src/common/stream.rs:383:9
[INFO] [stdout]     |
[INFO] [stdout] 383 |         String::from_utf8_lossy(stream.read_line().unwrap().as_ref()).to_owned(),
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#suspicious_to_owned
[INFO] [stdout] help: depending on intent, either make the `Cow` an `Owned` variant
[INFO] [stdout]     |
[INFO] [stdout] 383 |         String::from_utf8_lossy(stream.read_line().unwrap().as_ref()).into_owned(),
[INFO] [stdout]     |                                                                       ++
[INFO] [stdout] help: or clone the `Cow` itself
[INFO] [stdout]     |
[INFO] [stdout] 383 -         String::from_utf8_lossy(stream.read_line().unwrap().as_ref()).to_owned(),
[INFO] [stdout] 383 +         String::from_utf8_lossy(stream.read_line().unwrap().as_ref()).clone(),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this call to `as_ref` does nothing
[INFO] [stdout]    --> src/common/stream.rs:383:33
[INFO] [stdout]     |
[INFO] [stdout] 383 |         String::from_utf8_lossy(stream.read_line().unwrap().as_ref()).to_owned(),
[INFO] [stdout]     |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `stream.read_line().unwrap()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_asref
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `to_owned` call clones the `Cow<'_, str>` itself and does not cause its contents to become owned
[INFO] [stdout]    --> src/common/stream.rs:387:9
[INFO] [stdout]     |
[INFO] [stdout] 387 |         String::from_utf8_lossy(stream.read_line().unwrap().as_ref()).to_owned(),
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#suspicious_to_owned
[INFO] [stdout] help: depending on intent, either make the `Cow` an `Owned` variant
[INFO] [stdout]     |
[INFO] [stdout] 387 |         String::from_utf8_lossy(stream.read_line().unwrap().as_ref()).into_owned(),
[INFO] [stdout]     |                                                                       ++
[INFO] [stdout] help: or clone the `Cow` itself
[INFO] [stdout]     |
[INFO] [stdout] 387 -         String::from_utf8_lossy(stream.read_line().unwrap().as_ref()).to_owned(),
[INFO] [stdout] 387 +         String::from_utf8_lossy(stream.read_line().unwrap().as_ref()).clone(),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this call to `as_ref` does nothing
[INFO] [stdout]    --> src/common/stream.rs:387:33
[INFO] [stdout]     |
[INFO] [stdout] 387 |         String::from_utf8_lossy(stream.read_line().unwrap().as_ref()).to_owned(),
[INFO] [stdout]     |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `stream.read_line().unwrap()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_asref
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `to_owned` call clones the `Cow<'_, str>` itself and does not cause its contents to become owned
[INFO] [stdout]    --> src/common/stream.rs:391:9
[INFO] [stdout]     |
[INFO] [stdout] 391 |         String::from_utf8_lossy(stream.read_line().unwrap().as_ref()).to_owned(),
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#suspicious_to_owned
[INFO] [stdout] help: depending on intent, either make the `Cow` an `Owned` variant
[INFO] [stdout]     |
[INFO] [stdout] 391 |         String::from_utf8_lossy(stream.read_line().unwrap().as_ref()).into_owned(),
[INFO] [stdout]     |                                                                       ++
[INFO] [stdout] help: or clone the `Cow` itself
[INFO] [stdout]     |
[INFO] [stdout] 391 -         String::from_utf8_lossy(stream.read_line().unwrap().as_ref()).to_owned(),
[INFO] [stdout] 391 +         String::from_utf8_lossy(stream.read_line().unwrap().as_ref()).clone(),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this call to `as_ref` does nothing
[INFO] [stdout]    --> src/common/stream.rs:391:33
[INFO] [stdout]     |
[INFO] [stdout] 391 |         String::from_utf8_lossy(stream.read_line().unwrap().as_ref()).to_owned(),
[INFO] [stdout]     |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `stream.read_line().unwrap()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_asref
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `to_owned` call clones the `Cow<'_, str>` itself and does not cause its contents to become owned
[INFO] [stdout]    --> src/common/stream.rs:395:9
[INFO] [stdout]     |
[INFO] [stdout] 395 |         String::from_utf8_lossy(stream.read_line().unwrap().as_ref()).to_owned(),
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#suspicious_to_owned
[INFO] [stdout] help: depending on intent, either make the `Cow` an `Owned` variant
[INFO] [stdout]     |
[INFO] [stdout] 395 |         String::from_utf8_lossy(stream.read_line().unwrap().as_ref()).into_owned(),
[INFO] [stdout]     |                                                                       ++
[INFO] [stdout] help: or clone the `Cow` itself
[INFO] [stdout]     |
[INFO] [stdout] 395 -         String::from_utf8_lossy(stream.read_line().unwrap().as_ref()).to_owned(),
[INFO] [stdout] 395 +         String::from_utf8_lossy(stream.read_line().unwrap().as_ref()).clone(),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this call to `as_ref` does nothing
[INFO] [stdout]    --> src/common/stream.rs:395:33
[INFO] [stdout]     |
[INFO] [stdout] 395 |         String::from_utf8_lossy(stream.read_line().unwrap().as_ref()).to_owned(),
[INFO] [stdout]     |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `stream.read_line().unwrap()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_asref
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `to_owned` call clones the `Cow<'_, str>` itself and does not cause its contents to become owned
[INFO] [stdout]    --> src/common/stream.rs:399:9
[INFO] [stdout]     |
[INFO] [stdout] 399 |         String::from_utf8_lossy(stream.read_line().unwrap().as_ref()).to_owned(),
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#suspicious_to_owned
[INFO] [stdout] help: depending on intent, either make the `Cow` an `Owned` variant
[INFO] [stdout]     |
[INFO] [stdout] 399 |         String::from_utf8_lossy(stream.read_line().unwrap().as_ref()).into_owned(),
[INFO] [stdout]     |                                                                       ++
[INFO] [stdout] help: or clone the `Cow` itself
[INFO] [stdout]     |
[INFO] [stdout] 399 -         String::from_utf8_lossy(stream.read_line().unwrap().as_ref()).to_owned(),
[INFO] [stdout] 399 +         String::from_utf8_lossy(stream.read_line().unwrap().as_ref()).clone(),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this call to `as_ref` does nothing
[INFO] [stdout]    --> src/common/stream.rs:399:33
[INFO] [stdout]     |
[INFO] [stdout] 399 |         String::from_utf8_lossy(stream.read_line().unwrap().as_ref()).to_owned(),
[INFO] [stdout]     |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `stream.read_line().unwrap()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_asref
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `to_owned` call clones the `Cow<'_, str>` itself and does not cause its contents to become owned
[INFO] [stdout]    --> src/common/stream.rs:403:9
[INFO] [stdout]     |
[INFO] [stdout] 403 |         String::from_utf8_lossy(stream.read_line().unwrap().as_ref()).to_owned(),
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#suspicious_to_owned
[INFO] [stdout] help: depending on intent, either make the `Cow` an `Owned` variant
[INFO] [stdout]     |
[INFO] [stdout] 403 |         String::from_utf8_lossy(stream.read_line().unwrap().as_ref()).into_owned(),
[INFO] [stdout]     |                                                                       ++
[INFO] [stdout] help: or clone the `Cow` itself
[INFO] [stdout]     |
[INFO] [stdout] 403 -         String::from_utf8_lossy(stream.read_line().unwrap().as_ref()).to_owned(),
[INFO] [stdout] 403 +         String::from_utf8_lossy(stream.read_line().unwrap().as_ref()).clone(),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this call to `as_ref` does nothing
[INFO] [stdout]    --> src/common/stream.rs:403:33
[INFO] [stdout]     |
[INFO] [stdout] 403 |         String::from_utf8_lossy(stream.read_line().unwrap().as_ref()).to_owned(),
[INFO] [stdout]     |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `stream.read_line().unwrap()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_asref
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: length comparison to zero
[INFO] [stdout]   --> src/common/utils.rs:31:8
[INFO] [stdout]    |
[INFO] [stdout] 31 |     if s.len() > 0 && is_alnum(s.chars().nth(0).unwrap()) {
[INFO] [stdout]    |        ^^^^^^^^^^^ help: using `!is_empty` is clearer and more explicit: `!s.is_empty()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stdout]    = note: `#[warn(clippy::len_zero)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: called `.nth(0)` on a `std::iter::Iterator`, when `.next()` is equivalent
[INFO] [stdout]   --> src/common/utils.rs:31:32
[INFO] [stdout]    |
[INFO] [stdout] 31 |     if s.len() > 0 && is_alnum(s.chars().nth(0).unwrap()) {
[INFO] [stdout]    |                                ^^^^^^^^^^^^^^^^ help: try calling `.next()` instead of `.nth(0)`: `s.chars().next()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#iter_nth_zero
[INFO] [stdout]    = note: `#[warn(clippy::iter_nth_zero)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: redundant pattern matching, consider using `is_err()`
[INFO] [stdout]   --> examples/server.rs:49:12
[INFO] [stdout]    |
[INFO] [stdout] 49 |     if let Err(_) = server.listen(IpAddr::V4(Ipv4Addr::new(127, 0, 0, 1)), 2525) {
[INFO] [stdout]    |     -------^^^^^^--------------------------------------------------------------- help: try: `if server.listen(IpAddr::V4(Ipv4Addr::new(127, 0, 0, 1)), 2525).is_err()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern_matching
[INFO] [stdout]    = note: `#[warn(clippy::redundant_pattern_matching)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: match expression looks like `matches!` macro
[INFO] [stdout]    --> src/common/utils.rs:198:5
[INFO] [stdout]     |
[INFO] [stdout] 198 | /     match c {
[INFO] [stdout] 199 | |         '!' | '#' | '$' | '%' | '&' | '\'' | '*' | '+' | '-' | '/' | '=' | '?' | '^' | '_'
[INFO] [stdout] 200 | |         | '`' | '{' | '|' | '}' | '~' => true,
[INFO] [stdout] 201 | |         'A'..='Z' => true,
[INFO] [stdout] ...   |
[INFO] [stdout] 204 | |         _ => false,
[INFO] [stdout] 205 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_like_matches_macro
[INFO] [stdout]     = note: `#[warn(clippy::match_like_matches_macro)]` on by default
[INFO] [stdout] help: use `matches!` directly
[INFO] [stdout]     |
[INFO] [stdout] 198 ~     matches!(c, '!' | '#' | '$' | '%' | '&' | '\'' | '*' | '+' | '-' | '/' | '=' | '?' | '^' | '_'
[INFO] [stdout] 199 +         | '`' | '{' | '|' | '}' | '~' | 'A'..='Z' | 'a'..='z' | '0'..='9')
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: match expression looks like `matches!` macro
[INFO] [stdout]    --> src/common/utils.rs:266:5
[INFO] [stdout]     |
[INFO] [stdout] 266 | /     match c {
[INFO] [stdout] 267 | |         'A'..='Z' | 'a'..='z' | '0'..='9' => true,
[INFO] [stdout] 268 | |         _ => false,
[INFO] [stdout] 269 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_like_matches_macro
[INFO] [stdout] help: use `matches!` directly
[INFO] [stdout]     |
[INFO] [stdout] 266 -     match c {
[INFO] [stdout] 267 -         'A'..='Z' | 'a'..='z' | '0'..='9' => true,
[INFO] [stdout] 268 -         _ => false,
[INFO] [stdout] 269 -     }
[INFO] [stdout] 266 +     matches!(c, 'A'..='Z' | 'a'..='z' | '0'..='9')
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `if` has identical blocks
[INFO] [stdout]    --> src/common/utils.rs:277:45
[INFO] [stdout]     |
[INFO] [stdout] 277 |           if c >= 'A' as u8 && c <= 'Z' as u8 {
[INFO] [stdout]     |  _____________________________________________^
[INFO] [stdout] 278 | |             assert!(is_alnum(c as char));
[INFO] [stdout] 279 | |         } else if c >= 'a' as u8 && c <= 'z' as u8 {
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout] note: same as this
[INFO] [stdout]    --> src/common/utils.rs:279:52
[INFO] [stdout]     |
[INFO] [stdout] 279 |           } else if c >= 'a' as u8 && c <= 'z' as u8 {
[INFO] [stdout]     |  ____________________________________________________^
[INFO] [stdout] 280 | |             assert!(is_alnum(c as char));
[INFO] [stdout] 281 | |         } else if c >= '0' as u8 && c <= '9' as u8 {
[INFO] [stdout]     | |_________^
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#if_same_then_else
[INFO] [stdout]     = note: `#[warn(clippy::if_same_then_else)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this `if` has identical blocks
[INFO] [stdout]    --> src/common/utils.rs:279:52
[INFO] [stdout]     |
[INFO] [stdout] 279 |           } else if c >= 'a' as u8 && c <= 'z' as u8 {
[INFO] [stdout]     |  ____________________________________________________^
[INFO] [stdout] 280 | |             assert!(is_alnum(c as char));
[INFO] [stdout] 281 | |         } else if c >= '0' as u8 && c <= '9' as u8 {
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout] note: same as this
[INFO] [stdout]    --> src/common/utils.rs:281:52
[INFO] [stdout]     |
[INFO] [stdout] 281 |           } else if c >= '0' as u8 && c <= '9' as u8 {
[INFO] [stdout]     |  ____________________________________________________^
[INFO] [stdout] 282 | |             assert!(is_alnum(c as char));
[INFO] [stdout] 283 | |         } else {
[INFO] [stdout]     | |_________^
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#if_same_then_else
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: casting a character literal to `u8` truncates
[INFO] [stdout]    --> src/common/utils.rs:277:17
[INFO] [stdout]     |
[INFO] [stdout] 277 |         if c >= 'A' as u8 && c <= 'Z' as u8 {
[INFO] [stdout]     |                 ^^^^^^^^^ help: use a byte literal instead: `b'A'`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `char` is four bytes wide, but `u8` is a single byte
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#char_lit_as_u8
[INFO] [stdout]     = note: `#[warn(clippy::char_lit_as_u8)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: casting a character literal to `u8` truncates
[INFO] [stdout]    --> src/common/utils.rs:277:35
[INFO] [stdout]     |
[INFO] [stdout] 277 |         if c >= 'A' as u8 && c <= 'Z' as u8 {
[INFO] [stdout]     |                                   ^^^^^^^^^ help: use a byte literal instead: `b'Z'`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `char` is four bytes wide, but `u8` is a single byte
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#char_lit_as_u8
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: casting a character literal to `u8` truncates
[INFO] [stdout]    --> src/common/utils.rs:279:24
[INFO] [stdout]     |
[INFO] [stdout] 279 |         } else if c >= 'a' as u8 && c <= 'z' as u8 {
[INFO] [stdout]     |                        ^^^^^^^^^ help: use a byte literal instead: `b'a'`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `char` is four bytes wide, but `u8` is a single byte
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#char_lit_as_u8
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: casting a character literal to `u8` truncates
[INFO] [stdout]    --> src/common/utils.rs:279:42
[INFO] [stdout]     |
[INFO] [stdout] 279 |         } else if c >= 'a' as u8 && c <= 'z' as u8 {
[INFO] [stdout]     |                                          ^^^^^^^^^ help: use a byte literal instead: `b'z'`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `char` is four bytes wide, but `u8` is a single byte
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#char_lit_as_u8
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: casting a character literal to `u8` truncates
[INFO] [stdout]    --> src/common/utils.rs:281:24
[INFO] [stdout]     |
[INFO] [stdout] 281 |         } else if c >= '0' as u8 && c <= '9' as u8 {
[INFO] [stdout]     |                        ^^^^^^^^^ help: use a byte literal instead: `b'0'`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `char` is four bytes wide, but `u8` is a single byte
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#char_lit_as_u8
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: casting a character literal to `u8` truncates
[INFO] [stdout]    --> src/common/utils.rs:281:42
[INFO] [stdout]     |
[INFO] [stdout] 281 |         } else if c >= '0' as u8 && c <= '9' as u8 {
[INFO] [stdout]     |                                          ^^^^^^^^^ help: use a byte literal instead: `b'9'`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `char` is four bytes wide, but `u8` is a single byte
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#char_lit_as_u8
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: called `.nth(0)` on a `std::iter::Iterator`, when `.next()` is equivalent
[INFO] [stdout]    --> src/common/utils.rs:299:19
[INFO] [stdout]     |
[INFO] [stdout] 299 |     if sl >= 2 && s.chars().nth(0).unwrap() == '"' {
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^ help: try calling `.next()` instead of `.nth(0)`: `s.chars().next()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#iter_nth_zero
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: match expression looks like `matches!` macro
[INFO] [stdout]    --> src/common/utils.rs:351:5
[INFO] [stdout]     |
[INFO] [stdout] 351 | /     match c as isize {
[INFO] [stdout] 352 | |         32..=33 | 35..=91 | 93..=126 => true,
[INFO] [stdout] 353 | |         _ => false,
[INFO] [stdout] 354 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_like_matches_macro
[INFO] [stdout] help: use `matches!` directly
[INFO] [stdout]     |
[INFO] [stdout] 351 -     match c as isize {
[INFO] [stdout] 352 -         32..=33 | 35..=91 | 93..=126 => true,
[INFO] [stdout] 353 -         _ => false,
[INFO] [stdout] 354 -     }
[INFO] [stdout] 351 +     matches!(c as isize, 32..=33 | 35..=91 | 93..=126)
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: called `.nth(0)` on a `std::iter::Iterator`, when `.next()` is equivalent
[INFO] [stdout]    --> src/common/utils.rs:396:23
[INFO] [stdout]     |
[INFO] [stdout] 396 |     if s.len() > 1 && s.chars().nth(0).unwrap() == '@' {
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^ help: try calling `.next()` instead of `.nth(0)`: `s.chars().next()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#iter_nth_zero
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this loop could be written as a `while let` loop
[INFO] [stdout]    --> src/common/utils.rs:425:5
[INFO] [stdout]     |
[INFO] [stdout] 425 | /     loop {
[INFO] [stdout] 426 | |         // Get the current source route.
[INFO] [stdout] 427 | |         match get_at_domain(&s[len..]) {
[INFO] [stdout] 428 | |             Some(ad) => {
[INFO] [stdout] ...   |
[INFO] [stdout] 442 | |     }
[INFO] [stdout]     | |_____^ help: try: `while let Some(ad) = get_at_domain(&s[len..]) { .. }`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#while_let_loop
[INFO] [stdout]     = note: `#[warn(clippy::while_let_loop)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: called `.nth(0)` on a `std::iter::Iterator`, when `.next()` is equivalent
[INFO] [stdout]    --> src/common/utils.rs:506:12
[INFO] [stdout]     |
[INFO] [stdout] 506 |         || ip.chars().nth(0).unwrap() != '['
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^ help: try calling `.next()` instead of `.nth(0)`: `ip.chars().next()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#iter_nth_zero
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this returns a `Result<_, ()>`
[INFO] [stdout]   --> src/server/commands/mod.rs:42:5
[INFO] [stdout]    |
[INFO] [stdout] 42 |     fn handle_domain(&mut self, domain: &str) -> Result<(), ()>;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: use a custom `Error` type instead
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#result_unit_err
[INFO] [stdout]    = note: `#[warn(clippy::result_unit_err)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this returns a `Result<_, ()>`
[INFO] [stdout]   --> src/server/commands/mod.rs:51:5
[INFO] [stdout]    |
[INFO] [stdout] 51 |     fn handle_sender_address(&mut self, mailbox: Option<Mailbox>) -> Result<(), ()>;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: use a custom `Error` type instead
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#result_unit_err
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this returns a `Result<_, ()>`
[INFO] [stdout]   --> src/server/commands/mod.rs:57:5
[INFO] [stdout]    |
[INFO] [stdout] 57 |     fn handle_receiver_address(&mut self, mailbox: Mailbox) -> Result<(), ()>;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: use a custom `Error` type instead
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#result_unit_err
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: you should consider adding a `Default` implementation for `Command<CT, ST>`
[INFO] [stdout]    --> src/server/mod.rs:136:5
[INFO] [stdout]     |
[INFO] [stdout] 136 | /     pub fn new() -> Command<CT, ST> {
[INFO] [stdout] 137 | |         Command {
[INFO] [stdout] 138 | |             start: None,
[INFO] [stdout] 139 | |             front_middleware: None,
[INFO] [stdout] 140 | |         }
[INFO] [stdout] 141 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#new_without_default
[INFO] [stdout]     = note: `#[warn(clippy::new_without_default)]` on by default
[INFO] [stdout] help: try adding this
[INFO] [stdout]     |
[INFO] [stdout] 134 + impl<CT, ST> Default for Command<CT, ST> {
[INFO] [stdout] 135 +     fn default() -> Self {
[INFO] [stdout] 136 +         Self::new()
[INFO] [stdout] 137 +     }
[INFO] [stdout] 138 + }
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the following explicit lifetimes could be elided: 'a
[INFO] [stdout]    --> src/server/mod.rs:148:24
[INFO] [stdout]     |
[INFO] [stdout] 148 |     fn last_middleware<'a>(prev: &'a mut NextMiddleware<CT, ST>) -> &'a mut NextMiddleware<CT, ST> {
[INFO] [stdout]     |                        ^^         ^^                                 ^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_lifetimes
[INFO] [stdout]     = note: `#[warn(clippy::needless_lifetimes)]` on by default
[INFO] [stdout] help: elide the lifetimes
[INFO] [stdout]     |
[INFO] [stdout] 148 -     fn last_middleware<'a>(prev: &'a mut NextMiddleware<CT, ST>) -> &'a mut NextMiddleware<CT, ST> {
[INFO] [stdout] 148 +     fn last_middleware(prev: &mut NextMiddleware<CT, ST>) -> &mut NextMiddleware<CT, ST> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: creating a new box
[INFO] [stdout]    --> src/server/mod.rs:169:17
[INFO] [stdout]     |
[INFO] [stdout] 169 | /                 Command::last_middleware(self.front_middleware.as_mut().unwrap()).next =
[INFO] [stdout] 170 | |                     Box::new(next);
[INFO] [stdout]     | |__________________________________^ help: replace existing content with inner value instead: `*Command::last_middleware(self.front_middleware.as_mut().unwrap()).next = next`
[INFO] [stdout]     |
[INFO] [stdout]     = note: this creates a needless allocation
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#replace_box
[INFO] [stdout]     = note: `#[warn(clippy::replace_box)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: length comparison to zero
[INFO] [stdout]    --> src/server/mod.rs:408:12
[INFO] [stdout]     |
[INFO] [stdout] 408 |         if self.config.hostname.len() == 0 {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `self.config.hostname.is_empty()`
[INFO] [stdout]     |
[INFO] [stdout]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.49s
[INFO] running `Command { std: "docker" "inspect" "373613fac05e89dfe6e5ee6a26ea33438f34cc8260789769b91e657628cb865c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "373613fac05e89dfe6e5ee6a26ea33438f34cc8260789769b91e657628cb865c", kill_on_drop: false }`
[INFO] [stdout] 373613fac05e89dfe6e5ee6a26ea33438f34cc8260789769b91e657628cb865c