[INFO] crate pop3 1.0.6 is already in cache
[INFO] extracting crate pop3 1.0.6 into work/ex/clippy-test-run/sources/stable/reg/pop3/1.0.6
[INFO] extracting crate pop3 1.0.6 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/pop3/1.0.6
[INFO] validating manifest of pop3-1.0.6 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 pop3-1.0.6 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 pop3-1.0.6
[INFO] finished frobbing pop3-1.0.6
[INFO] frobbed toml for pop3-1.0.6 written to work/ex/clippy-test-run/sources/stable/reg/pop3/1.0.6/Cargo.toml
[INFO] started frobbing pop3-1.0.6
[INFO] finished frobbing pop3-1.0.6
[INFO] frobbed toml for pop3-1.0.6 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/pop3/1.0.6/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 pop3-1.0.6 against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-7/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/reg/pop3/1.0.6:/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] 0b417bc323eb2b8f0a91a31b5a9c19af3068cdbebcee3336990277af7b7db6c7
[INFO] running `"docker" "start" "-a" "0b417bc323eb2b8f0a91a31b5a9c19af3068cdbebcee3336990277af7b7db6c7"`
[INFO] [stderr]     Checking pop3 v1.0.6 (/opt/crater/workdir)
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/pop3.rs:557:4
[INFO] [stderr]     |
[INFO] [stderr] 557 |             raw: raw
[INFO] [stderr]     |             ^^^^^^^^ help: replace it with: `raw`
[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/pop3.rs:557:4
[INFO] [stderr]     |
[INFO] [stderr] 557 |             raw: raw
[INFO] [stderr]     |             ^^^^^^^^ help: replace it with: `raw`
[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: this `else { if .. }` block can be collapsed
[INFO] [stderr]    --> src/pop3.rs:439:10
[INFO] [stderr]     |
[INFO] [stderr] 439 |           } else {
[INFO] [stderr]     |  ________________^
[INFO] [stderr] 440 | |             if ending_regex.is_match(&l) {
[INFO] [stderr] 441 | |                 self.lines.push(l);
[INFO] [stderr] 442 | |                 match command {
[INFO] [stderr] ...   |
[INFO] [stderr] 459 | |             }
[INFO] [stderr] 460 | |         }
[INFO] [stderr]     | |_________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::collapsible_if)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stderr] help: try
[INFO] [stderr]     |
[INFO] [stderr] 439 |         } else if ending_regex.is_match(&l) {
[INFO] [stderr] 440 |                 self.lines.push(l);
[INFO] [stderr] 441 |                 match command {
[INFO] [stderr] 442 |                                     UidlAll => {
[INFO] [stderr] 443 |                                         self.complete = true;
[INFO] [stderr] 444 |                                         self.parse_uidl_all();
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: this `else { if .. }` block can be collapsed
[INFO] [stderr]    --> src/pop3.rs:439:10
[INFO] [stderr]     |
[INFO] [stderr] 439 |           } else {
[INFO] [stderr]     |  ________________^
[INFO] [stderr] 440 | |             if ending_regex.is_match(&l) {
[INFO] [stderr] 441 | |                 self.lines.push(l);
[INFO] [stderr] 442 | |                 match command {
[INFO] [stderr] ...   |
[INFO] [stderr] 459 | |             }
[INFO] [stderr] 460 | |         }
[INFO] [stderr]     | |_________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::collapsible_if)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#collapsible_if
[INFO] [stderr] help: try
[INFO] [stderr]     |
[INFO] [stderr] 439 |         } else if ending_regex.is_match(&l) {
[INFO] [stderr] 440 |                 self.lines.push(l);
[INFO] [stderr] 441 |                 match command {
[INFO] [stderr] 442 |                                     UidlAll => {
[INFO] [stderr] 443 |                                         self.complete = true;
[INFO] [stderr] 444 |                                         self.parse_uidl_all();
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: Err(_) will match all errors, maybe not a good idea
[INFO] [stderr]   --> src/pop3.rs:90:4
[INFO] [stderr]    |
[INFO] [stderr] 90 |             Err(_) => panic!("Error writing"),
[INFO] [stderr]    |             ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::match_wild_err_arm)] on by default
[INFO] [stderr]    = note: to remove this warning, match each error separately or use unreachable macro
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_wild_err_arm
[INFO] [stderr] 
[INFO] [stderr] warning: Err(_) will match all errors, maybe not a good idea
[INFO] [stderr]    --> src/pop3.rs:105:4
[INFO] [stderr]     |
[INFO] [stderr] 105 |             Err(_) => panic!("Failure to use USER")
[INFO] [stderr]     |             ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: to remove this warning, match each error separately or use unreachable macro
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_wild_err_arm
[INFO] [stderr] 
[INFO] [stderr] warning: Err(_) will match all errors, maybe not a good idea
[INFO] [stderr]   --> src/pop3.rs:96:6
[INFO] [stderr]    |
[INFO] [stderr] 96 |                     Err(_) => panic!("Error writing"),
[INFO] [stderr]    |                     ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: to remove this warning, match each error separately or use unreachable macro
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_wild_err_arm
[INFO] [stderr] 
[INFO] [stderr] warning: Err(_) will match all errors, maybe not a good idea
[INFO] [stderr]    --> src/pop3.rs:102:6
[INFO] [stderr]     |
[INFO] [stderr] 102 |                     Err(_) => panic!("Failure to use PASS")
[INFO] [stderr]     |                     ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: to remove this warning, match each error separately or use unreachable macro
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_wild_err_arm
[INFO] [stderr] 
[INFO] [stderr] warning: Err(_) will match all errors, maybe not a good idea
[INFO] [stderr]    --> src/pop3.rs:118:4
[INFO] [stderr]     |
[INFO] [stderr] 118 |             Err(_) => panic!("Error writing"),
[INFO] [stderr]     |             ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: to remove this warning, match each error separately or use unreachable macro
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_wild_err_arm
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/pop3.rs:138:21
[INFO] [stderr]     |
[INFO] [stderr] 138 |             None => format!("UIDL\r\n"),
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"UIDL\r\n".to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::useless_format)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: Err(_) will match all errors, maybe not a good idea
[INFO] [stderr]    --> src/pop3.rs:147:13
[INFO] [stderr]     |
[INFO] [stderr] 147 |             Err(_) => panic!("Error writing"),
[INFO] [stderr]     |             ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: to remove this warning, match each error separately or use unreachable macro
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_wild_err_arm
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/pop3.rs:169:16
[INFO] [stderr]     |
[INFO] [stderr] 169 |                             None => format!("LIST\r\n"),
[INFO] [stderr]     |                                     ^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"LIST\r\n".to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: Err(_) will match all errors, maybe not a good idea
[INFO] [stderr]    --> src/pop3.rs:178:4
[INFO] [stderr]     |
[INFO] [stderr] 178 |             Err(_) => panic!("Error writing"),
[INFO] [stderr]     |             ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: to remove this warning, match each error separately or use unreachable macro
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_wild_err_arm
[INFO] [stderr] 
[INFO] [stderr] warning: Err(_) will match all errors, maybe not a good idea
[INFO] [stderr]    --> src/pop3.rs:202:4
[INFO] [stderr]     |
[INFO] [stderr] 202 |             Err(_) => panic!("Error writing"),
[INFO] [stderr]     |             ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: to remove this warning, match each error separately or use unreachable macro
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_wild_err_arm
[INFO] [stderr] 
[INFO] [stderr] warning: Err(_) will match all errors, maybe not a good idea
[INFO] [stderr]    --> src/pop3.rs:226:4
[INFO] [stderr]     |
[INFO] [stderr] 226 |             Err(_) => panic!("Error writing"),
[INFO] [stderr]     |             ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: to remove this warning, match each error separately or use unreachable macro
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_wild_err_arm
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/pop3.rs:246:22
[INFO] [stderr]     |
[INFO] [stderr] 246 |         let retr_command = format!("RETR\r\n");
[INFO] [stderr]     |                            ^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"RETR\r\n".to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: Err(_) will match all errors, maybe not a good idea
[INFO] [stderr]    --> src/pop3.rs:250:4
[INFO] [stderr]     |
[INFO] [stderr] 250 |             Err(_) => panic!("Error writing"),
[INFO] [stderr]     |             ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: to remove this warning, match each error separately or use unreachable macro
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_wild_err_arm
[INFO] [stderr] 
[INFO] [stderr] warning: Err(_) will match all errors, maybe not a good idea
[INFO] [stderr]    --> src/pop3.rs:270:4
[INFO] [stderr]     |
[INFO] [stderr] 270 |             Err(_) => panic!("Error writing"),
[INFO] [stderr]     |             ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: to remove this warning, match each error separately or use unreachable macro
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_wild_err_arm
[INFO] [stderr] 
[INFO] [stderr] warning: Err(_) will match all errors, maybe not a good idea
[INFO] [stderr]    --> src/pop3.rs:294:4
[INFO] [stderr]     |
[INFO] [stderr] 294 |             Err(_) => panic!("Error writing"),
[INFO] [stderr]     |             ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: to remove this warning, match each error separately or use unreachable macro
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_wild_err_arm
[INFO] [stderr] 
[INFO] [stderr] warning: Err(_) will match all errors, maybe not a good idea
[INFO] [stderr]    --> src/pop3.rs:304:4
[INFO] [stderr]     |
[INFO] [stderr] 304 |             Err(_) => panic!("Error noop")
[INFO] [stderr]     |             ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: to remove this warning, match each error separately or use unreachable macro
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_wild_err_arm
[INFO] [stderr] 
[INFO] [stderr] warning: Err(_) will match all errors, maybe not a good idea
[INFO] [stderr]    --> src/pop3.rs:389:4
[INFO] [stderr]     |
[INFO] [stderr] 389 |             Err(_) => panic!("Invalid Regex!!"),
[INFO] [stderr]     |             ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: to remove this warning, match each error separately or use unreachable macro
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_wild_err_arm
[INFO] [stderr] 
[INFO] [stderr] warning: trivial regex
[INFO] [stderr]    --> src/pop3.rs:387:39
[INFO] [stderr]     |
[INFO] [stderr] 387 |         let ending_regex = match Regex::new(r"^\.\r\n$") {
[INFO] [stderr]     |                                             ^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::trivial_regex)] on by default
[INFO] [stderr]     = help: consider using `==` on `str`s
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivial_regex
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]    --> src/pop3.rs:393:6
[INFO] [stderr]     |
[INFO] [stderr] 393 |         if self.lines.len() == 0 {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `self.lines.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: Err(_) will match all errors, maybe not a good idea
[INFO] [stderr]    --> src/pop3.rs:396:5
[INFO] [stderr]     |
[INFO] [stderr] 396 |                 Err(_) => panic!("Invalid Regex!!"),
[INFO] [stderr]     |                 ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: to remove this warning, match each error separately or use unreachable macro
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_wild_err_arm
[INFO] [stderr] 
[INFO] [stderr] warning: Err(_) will match all errors, maybe not a good idea
[INFO] [stderr]    --> src/pop3.rs:401:5
[INFO] [stderr]     |
[INFO] [stderr] 401 |                 Err(_) => panic!("Invalid Regex!!"),
[INFO] [stderr]     |                 ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: to remove this warning, match each error separately or use unreachable macro
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_wild_err_arm
[INFO] [stderr] 
[INFO] [stderr] warning: Err(_) will match all errors, maybe not a good idea
[INFO] [stderr]    --> src/pop3.rs:466:4
[INFO] [stderr]     |
[INFO] [stderr] 466 |             Err(_) => panic!("Invalid Regex!!"),
[INFO] [stderr]     |             ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: to remove this warning, match each error separately or use unreachable macro
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_wild_err_arm
[INFO] [stderr] 
[INFO] [stderr] warning: Err(_) will match all errors, maybe not a good idea
[INFO] [stderr]    --> src/pop3.rs:481:13
[INFO] [stderr]     |
[INFO] [stderr] 481 |             Err(_) => panic!("Invalid Regex!!"),
[INFO] [stderr]     |             ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: to remove this warning, match each error separately or use unreachable macro
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_wild_err_arm
[INFO] [stderr] 
[INFO] [stderr] warning: Err(_) will match all errors, maybe not a good idea
[INFO] [stderr]    --> src/pop3.rs:505:13
[INFO] [stderr]     |
[INFO] [stderr] 505 |             Err(_) => panic!("Invalid Regex!!"),
[INFO] [stderr]     |             ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: to remove this warning, match each error separately or use unreachable macro
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_wild_err_arm
[INFO] [stderr] 
[INFO] [stderr] warning: Err(_) will match all errors, maybe not a good idea
[INFO] [stderr]    --> src/pop3.rs:523:4
[INFO] [stderr]     |
[INFO] [stderr] 523 |             Err(_) => panic!("Invalid Regex!!"),
[INFO] [stderr]     |             ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: to remove this warning, match each error separately or use unreachable macro
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_wild_err_arm
[INFO] [stderr] 
[INFO] [stderr] warning: Err(_) will match all errors, maybe not a good idea
[INFO] [stderr]    --> src/pop3.rs:541:4
[INFO] [stderr]     |
[INFO] [stderr] 541 |             Err(_) => panic!("Invalid Regex!!"),
[INFO] [stderr]     |             ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: to remove this warning, match each error separately or use unreachable macro
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_wild_err_arm
[INFO] [stderr] 
[INFO] [stderr] warning: Err(_) will match all errors, maybe not a good idea
[INFO] [stderr]   --> src/pop3.rs:90:4
[INFO] [stderr]    |
[INFO] [stderr] 90 |             Err(_) => panic!("Error writing"),
[INFO] [stderr]    |             ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::match_wild_err_arm)] on by default
[INFO] [stderr]    = note: to remove this warning, match each error separately or use unreachable macro
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_wild_err_arm
[INFO] [stderr] 
[INFO] [stderr] warning: Err(_) will match all errors, maybe not a good idea
[INFO] [stderr]    --> src/pop3.rs:105:4
[INFO] [stderr]     |
[INFO] [stderr] 105 |             Err(_) => panic!("Failure to use USER")
[INFO] [stderr]     |             ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: to remove this warning, match each error separately or use unreachable macro
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_wild_err_arm
[INFO] [stderr] 
[INFO] [stderr] warning: Err(_) will match all errors, maybe not a good idea
[INFO] [stderr]   --> src/pop3.rs:96:6
[INFO] [stderr]    |
[INFO] [stderr] 96 |                     Err(_) => panic!("Error writing"),
[INFO] [stderr]    |                     ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: to remove this warning, match each error separately or use unreachable macro
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_wild_err_arm
[INFO] [stderr] 
[INFO] [stderr] warning: Err(_) will match all errors, maybe not a good idea
[INFO] [stderr]    --> src/pop3.rs:102:6
[INFO] [stderr]     |
[INFO] [stderr] 102 |                     Err(_) => panic!("Failure to use PASS")
[INFO] [stderr]     |                     ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: to remove this warning, match each error separately or use unreachable macro
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_wild_err_arm
[INFO] [stderr] 
[INFO] [stderr] warning: Err(_) will match all errors, maybe not a good idea
[INFO] [stderr]    --> src/pop3.rs:118:4
[INFO] [stderr]     |
[INFO] [stderr] 118 |             Err(_) => panic!("Error writing"),
[INFO] [stderr]     |             ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: to remove this warning, match each error separately or use unreachable macro
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_wild_err_arm
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/pop3.rs:138:21
[INFO] [stderr]     |
[INFO] [stderr] 138 |             None => format!("UIDL\r\n"),
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"UIDL\r\n".to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::useless_format)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: Err(_) will match all errors, maybe not a good idea
[INFO] [stderr]    --> src/pop3.rs:147:13
[INFO] [stderr]     |
[INFO] [stderr] 147 |             Err(_) => panic!("Error writing"),
[INFO] [stderr]     |             ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: to remove this warning, match each error separately or use unreachable macro
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_wild_err_arm
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/pop3.rs:169:16
[INFO] [stderr]     |
[INFO] [stderr] 169 |                             None => format!("LIST\r\n"),
[INFO] [stderr]     |                                     ^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"LIST\r\n".to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: Err(_) will match all errors, maybe not a good idea
[INFO] [stderr]    --> src/pop3.rs:178:4
[INFO] [stderr]     |
[INFO] [stderr] 178 |             Err(_) => panic!("Error writing"),
[INFO] [stderr]     |             ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: to remove this warning, match each error separately or use unreachable macro
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_wild_err_arm
[INFO] [stderr] 
[INFO] [stderr] warning: Err(_) will match all errors, maybe not a good idea
[INFO] [stderr]    --> src/pop3.rs:202:4
[INFO] [stderr]     |
[INFO] [stderr] 202 |             Err(_) => panic!("Error writing"),
[INFO] [stderr]     |             ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: to remove this warning, match each error separately or use unreachable macro
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_wild_err_arm
[INFO] [stderr] 
[INFO] [stderr] warning: Err(_) will match all errors, maybe not a good idea
[INFO] [stderr]    --> src/pop3.rs:226:4
[INFO] [stderr]     |
[INFO] [stderr] 226 |             Err(_) => panic!("Error writing"),
[INFO] [stderr]     |             ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: to remove this warning, match each error separately or use unreachable macro
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_wild_err_arm
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/pop3.rs:246:22
[INFO] [stderr]     |
[INFO] [stderr] 246 |         let retr_command = format!("RETR\r\n");
[INFO] [stderr]     |                            ^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"RETR\r\n".to_string()`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] 
[INFO] [stderr] warning: Err(_) will match all errors, maybe not a good idea
[INFO] [stderr]    --> src/pop3.rs:250:4
[INFO] [stderr]     |
[INFO] [stderr] 250 |             Err(_) => panic!("Error writing"),
[INFO] [stderr]     |             ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: to remove this warning, match each error separately or use unreachable macro
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_wild_err_arm
[INFO] [stderr] 
[INFO] [stderr] warning: Err(_) will match all errors, maybe not a good idea
[INFO] [stderr]    --> src/pop3.rs:270:4
[INFO] [stderr]     |
[INFO] [stderr] 270 |             Err(_) => panic!("Error writing"),
[INFO] [stderr]     |             ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: to remove this warning, match each error separately or use unreachable macro
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_wild_err_arm
[INFO] [stderr] 
[INFO] [stderr] warning: Err(_) will match all errors, maybe not a good idea
[INFO] [stderr]    --> src/pop3.rs:294:4
[INFO] [stderr]     |
[INFO] [stderr] 294 |             Err(_) => panic!("Error writing"),
[INFO] [stderr]     |             ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: to remove this warning, match each error separately or use unreachable macro
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_wild_err_arm
[INFO] [stderr] 
[INFO] [stderr] warning: Err(_) will match all errors, maybe not a good idea
[INFO] [stderr]    --> src/pop3.rs:304:4
[INFO] [stderr]     |
[INFO] [stderr] 304 |             Err(_) => panic!("Error noop")
[INFO] [stderr]     |             ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: to remove this warning, match each error separately or use unreachable macro
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_wild_err_arm
[INFO] [stderr] 
[INFO] [stderr] warning: Err(_) will match all errors, maybe not a good idea
[INFO] [stderr]    --> src/pop3.rs:389:4
[INFO] [stderr]     |
[INFO] [stderr] 389 |             Err(_) => panic!("Invalid Regex!!"),
[INFO] [stderr]     |             ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: to remove this warning, match each error separately or use unreachable macro
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_wild_err_arm
[INFO] [stderr] 
[INFO] [stderr] warning: trivial regex
[INFO] [stderr]    --> src/pop3.rs:387:39
[INFO] [stderr]     |
[INFO] [stderr] 387 |         let ending_regex = match Regex::new(r"^\.\r\n$") {
[INFO] [stderr]     |                                             ^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::trivial_regex)] on by default
[INFO] [stderr]     = help: consider using `==` on `str`s
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#trivial_regex
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]    --> src/pop3.rs:393:6
[INFO] [stderr]     |
[INFO] [stderr] 393 |         if self.lines.len() == 0 {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `self.lines.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: Err(_) will match all errors, maybe not a good idea
[INFO] [stderr]    --> src/pop3.rs:396:5
[INFO] [stderr]     |
[INFO] [stderr] 396 |                 Err(_) => panic!("Invalid Regex!!"),
[INFO] [stderr]     |                 ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: to remove this warning, match each error separately or use unreachable macro
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_wild_err_arm
[INFO] [stderr] 
[INFO] [stderr] warning: Err(_) will match all errors, maybe not a good idea
[INFO] [stderr]    --> src/pop3.rs:401:5
[INFO] [stderr]     |
[INFO] [stderr] 401 |                 Err(_) => panic!("Invalid Regex!!"),
[INFO] [stderr]     |                 ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: to remove this warning, match each error separately or use unreachable macro
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_wild_err_arm
[INFO] [stderr] 
[INFO] [stderr] warning: Err(_) will match all errors, maybe not a good idea
[INFO] [stderr]    --> src/pop3.rs:466:4
[INFO] [stderr]     |
[INFO] [stderr] 466 |             Err(_) => panic!("Invalid Regex!!"),
[INFO] [stderr]     |             ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: to remove this warning, match each error separately or use unreachable macro
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_wild_err_arm
[INFO] [stderr] 
[INFO] [stderr] warning: Err(_) will match all errors, maybe not a good idea
[INFO] [stderr]    --> src/pop3.rs:481:13
[INFO] [stderr]     |
[INFO] [stderr] 481 |             Err(_) => panic!("Invalid Regex!!"),
[INFO] [stderr]     |             ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: to remove this warning, match each error separately or use unreachable macro
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_wild_err_arm
[INFO] [stderr] 
[INFO] [stderr] warning: Err(_) will match all errors, maybe not a good idea
[INFO] [stderr]    --> src/pop3.rs:505:13
[INFO] [stderr]     |
[INFO] [stderr] 505 |             Err(_) => panic!("Invalid Regex!!"),
[INFO] [stderr]     |             ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: to remove this warning, match each error separately or use unreachable macro
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_wild_err_arm
[INFO] [stderr] 
[INFO] [stderr] warning: Err(_) will match all errors, maybe not a good idea
[INFO] [stderr]    --> src/pop3.rs:523:4
[INFO] [stderr]     |
[INFO] [stderr] 523 |             Err(_) => panic!("Invalid Regex!!"),
[INFO] [stderr]     |             ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: to remove this warning, match each error separately or use unreachable macro
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_wild_err_arm
[INFO] [stderr] 
[INFO] [stderr] warning: Err(_) will match all errors, maybe not a good idea
[INFO] [stderr]    --> src/pop3.rs:541:4
[INFO] [stderr]     |
[INFO] [stderr] 541 |             Err(_) => panic!("Invalid Regex!!"),
[INFO] [stderr]     |             ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: to remove this warning, match each error separately or use unreachable macro
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_wild_err_arm
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.59s
[INFO] running `"docker" "inspect" "0b417bc323eb2b8f0a91a31b5a9c19af3068cdbebcee3336990277af7b7db6c7"`
[INFO] running `"docker" "rm" "-f" "0b417bc323eb2b8f0a91a31b5a9c19af3068cdbebcee3336990277af7b7db6c7"`
[INFO] [stdout] 0b417bc323eb2b8f0a91a31b5a9c19af3068cdbebcee3336990277af7b7db6c7