[INFO] updating cached repository Nordgedanken/IMAPServer-rs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Nordgedanken/IMAPServer-rs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Nordgedanken/IMAPServer-rs" "work/ex/clippy-test-run/sources/stable/gh/Nordgedanken/IMAPServer-rs"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/Nordgedanken/IMAPServer-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Nordgedanken/IMAPServer-rs" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/Nordgedanken/IMAPServer-rs"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/Nordgedanken/IMAPServer-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d298af4d40c277bf8e4a9f9eaa8dc22b07c51021
[INFO] sha for GitHub repo Nordgedanken/IMAPServer-rs: d298af4d40c277bf8e4a9f9eaa8dc22b07c51021
[INFO] validating manifest of Nordgedanken/IMAPServer-rs 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 Nordgedanken/IMAPServer-rs 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 Nordgedanken/IMAPServer-rs
[INFO] finished frobbing Nordgedanken/IMAPServer-rs
[INFO] frobbed toml for Nordgedanken/IMAPServer-rs written to work/ex/clippy-test-run/sources/stable/gh/Nordgedanken/IMAPServer-rs/Cargo.toml
[INFO] started frobbing Nordgedanken/IMAPServer-rs
[INFO] finished frobbing Nordgedanken/IMAPServer-rs
[INFO] frobbed toml for Nordgedanken/IMAPServer-rs written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/Nordgedanken/IMAPServer-rs/Cargo.toml
[INFO] crate Nordgedanken/IMAPServer-rs has a lockfile. skipping
[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 Nordgedanken/IMAPServer-rs against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-6/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/Nordgedanken/IMAPServer-rs:/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] c1a373dc30f889a7ea30ed707d2c152462898a81b5fcb30c8132efc94d80d2b4
[INFO] running `"docker" "start" "-a" "c1a373dc30f889a7ea30ed707d2c152462898a81b5fcb30c8132efc94d80d2b4"`
[INFO] [stderr]     Checking quoted_printable v0.3.3
[INFO] [stderr]     Checking memchr v1.0.2
[INFO] [stderr]    Compiling metadeps v1.1.2
[INFO] [stderr]     Checking nix v0.8.1
[INFO] [stderr]     Checking app_dirs v1.1.1
[INFO] [stderr]     Checking twox-hash v1.1.0
[INFO] [stderr]     Checking chrono v0.3.0
[INFO] [stderr]     Checking pwhash v0.1.2
[INFO] [stderr]     Checking mailparse v0.5.1
[INFO] [stderr]     Checking nom v3.2.1
[INFO] [stderr]    Compiling libdbus-sys v0.1.2
[INFO] [stderr]     Checking dbus v0.5.4
[INFO] [stderr]     Checking mysql v11.3.1
[INFO] [stderr]     Checking IMAPServer v0.0.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]  --> src/main.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #[macro_use]
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused macro definition
[INFO] [stderr]  --> src/macros.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | / macro_rules! mail {
[INFO] [stderr] 2 | |     ($msg:expr) => ({
[INFO] [stderr] 3 | |         println!("log({}): {}", state, $msg);
[INFO] [stderr] 4 | |     })
[INFO] [stderr] 5 | | }
[INFO] [stderr]   | |_^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_macros)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]   --> src/helper.rs:64:5
[INFO] [stderr]    |
[INFO] [stderr] 64 |     config_root
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::let_and_return)] on by default
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]   --> src/helper.rs:63:23
[INFO] [stderr]    |
[INFO] [stderr] 63 |     let config_root = app_root(AppDataType::UserConfig, &APP_INFO).unwrap();
[INFO] [stderr]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'futures::stream::iter': implementation moved to `iter_ok` and `iter_result`
[INFO] [stderr]   --> src/main.rs:88:20
[INFO] [stderr]    |
[INFO] [stderr] 88 |         let iter = stream::iter(iter::repeat(()).map(Ok::<(), Error>));
[INFO] [stderr]    |                    ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(deprecated)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'commands::login': please use `commands::authenticate::authenticate` instead
[INFO] [stderr]    --> src/main.rs:113:29
[INFO] [stderr]     |
[INFO] [stderr] 113 |                             commands::login(conns, args, &addr);
[INFO] [stderr]     |                             ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'futures::BoxFuture': removed without replacement, recommended to use a local extension trait or function if needed, more details in https://github.com/alexcrichton/futures-rs/issues/228
[INFO] [stderr]  --> src/server/service.rs:2:31
[INFO] [stderr]   |
[INFO] [stderr] 2 | use futures::{future, Future, BoxFuture};
[INFO] [stderr]   |                               ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'futures::BoxFuture': removed without replacement, recommended to use a local extension trait or function if needed, more details in https://github.com/alexcrichton/futures-rs/issues/228
[INFO] [stderr]   --> src/server/service.rs:16:19
[INFO] [stderr]    |
[INFO] [stderr] 16 |     type Future = BoxFuture<Self::Response, Self::Error>;
[INFO] [stderr]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]  --> src/main.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #[macro_use]
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused macro definition
[INFO] [stderr]  --> src/macros.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | / macro_rules! mail {
[INFO] [stderr] 2 | |     ($msg:expr) => ({
[INFO] [stderr] 3 | |         println!("log({}): {}", state, $msg);
[INFO] [stderr] 4 | |     })
[INFO] [stderr] 5 | | }
[INFO] [stderr]   | |_^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_macros)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]   --> src/helper.rs:64:5
[INFO] [stderr]    |
[INFO] [stderr] 64 |     config_root
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::let_and_return)] on by default
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]   --> src/helper.rs:63:23
[INFO] [stderr]    |
[INFO] [stderr] 63 |     let config_root = app_root(AppDataType::UserConfig, &APP_INFO).unwrap();
[INFO] [stderr]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'futures::stream::iter': implementation moved to `iter_ok` and `iter_result`
[INFO] [stderr]   --> src/main.rs:88:20
[INFO] [stderr]    |
[INFO] [stderr] 88 |         let iter = stream::iter(iter::repeat(()).map(Ok::<(), Error>));
[INFO] [stderr]    |                    ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(deprecated)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'commands::login': please use `commands::authenticate::authenticate` instead
[INFO] [stderr]    --> src/main.rs:113:29
[INFO] [stderr]     |
[INFO] [stderr] 113 |                             commands::login(conns, args, &addr);
[INFO] [stderr]     |                             ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'futures::BoxFuture': removed without replacement, recommended to use a local extension trait or function if needed, more details in https://github.com/alexcrichton/futures-rs/issues/228
[INFO] [stderr]  --> src/server/service.rs:2:31
[INFO] [stderr]   |
[INFO] [stderr] 2 | use futures::{future, Future, BoxFuture};
[INFO] [stderr]   |                               ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'futures::BoxFuture': removed without replacement, recommended to use a local extension trait or function if needed, more details in https://github.com/alexcrichton/futures-rs/issues/228
[INFO] [stderr]   --> src/server/service.rs:16:19
[INFO] [stderr]    |
[INFO] [stderr] 16 |     type Future = BoxFuture<Self::Response, Self::Error>;
[INFO] [stderr]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item '<futures::sync::mpsc::UnboundedSender<T>>::send': renamed to `unbounded_send`
[INFO] [stderr]   --> src/main.rs:75:12
[INFO] [stderr]    |
[INFO] [stderr] 75 |         tx.send(format!("{}", "* OK [CAPABILITY IMAP4rev1 AUTH=PLAIN UTF8=ACCEPT LOGINDISABLED] IMAP4rev1 Service Ready\r\n")).unwrap();
[INFO] [stderr]    |            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item '<futures::sync::mpsc::UnboundedSender<T>>::send': renamed to `unbounded_send`
[INFO] [stderr]    --> src/main.rs:132:32
[INFO] [stderr]     |
[INFO] [stderr] 132 |                             tx.send(format!("{}", "* BAD Command not known\r\n"))
[INFO] [stderr]     |                                ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item '<futures::sync::mpsc::UnboundedSender<T>>::send': renamed to `unbounded_send`
[INFO] [stderr]   --> src/main.rs:75:12
[INFO] [stderr]    |
[INFO] [stderr] 75 |         tx.send(format!("{}", "* OK [CAPABILITY IMAP4rev1 AUTH=PLAIN UTF8=ACCEPT LOGINDISABLED] IMAP4rev1 Service Ready\r\n")).unwrap();
[INFO] [stderr]    |            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item '<futures::sync::mpsc::UnboundedSender<T>>::send': renamed to `unbounded_send`
[INFO] [stderr]    --> src/main.rs:132:32
[INFO] [stderr]     |
[INFO] [stderr] 132 |                             tx.send(format!("{}", "* BAD Command not known\r\n"))
[INFO] [stderr]     |                                ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item '<futures::sync::mpsc::UnboundedSender<T>>::send': renamed to `unbounded_send`
[INFO] [stderr]   --> src/commands/mod.rs:18:16
[INFO] [stderr]    |
[INFO] [stderr] 18 |             tx.send(format!(
[INFO] [stderr]    |                ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item '<futures::sync::mpsc::UnboundedSender<T>>::send': renamed to `unbounded_send`
[INFO] [stderr]   --> src/commands/mod.rs:22:16
[INFO] [stderr]    |
[INFO] [stderr] 22 |             tx.send(format!("{}{}", identifier, " OK CAPABILITY completed\r\n"))
[INFO] [stderr]    |                ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item '<futures::sync::mpsc::UnboundedSender<T>>::send': renamed to `unbounded_send`
[INFO] [stderr]   --> src/commands/mod.rs:49:16
[INFO] [stderr]    |
[INFO] [stderr] 49 |             tx.send(format!("{}", "* LIST () \"/\" INBOX\r\n")).unwrap();
[INFO] [stderr]    |                ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item '<futures::sync::mpsc::UnboundedSender<T>>::send': renamed to `unbounded_send`
[INFO] [stderr]   --> src/commands/mod.rs:50:16
[INFO] [stderr]    |
[INFO] [stderr] 50 |             tx.send(format!("{}{}", identifier, " OK LIST Completed\r\n"))
[INFO] [stderr]    |                ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item '<futures::sync::mpsc::UnboundedSender<T>>::send': renamed to `unbounded_send`
[INFO] [stderr]   --> src/commands/mod.rs:74:16
[INFO] [stderr]    |
[INFO] [stderr] 74 |             tx.send(format!("{}", "* 1 FETCH (FLAGS (\\Seen) UID 1)\r\n"))
[INFO] [stderr]    |                ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item '<futures::sync::mpsc::UnboundedSender<T>>::send': renamed to `unbounded_send`
[INFO] [stderr]   --> src/commands/mod.rs:76:16
[INFO] [stderr]    |
[INFO] [stderr] 76 |             tx.send(format!("{}{}", identifier, " OK UID FETCH completed\r\n"))
[INFO] [stderr]    |                ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item '<futures::sync::mpsc::UnboundedSender<T>>::send': renamed to `unbounded_send`
[INFO] [stderr]    --> src/commands/mod.rs:100:16
[INFO] [stderr]     |
[INFO] [stderr] 100 |             tx.send(format!("{}", "* BYE IMAP4rev1 Server logging out\r\n"))
[INFO] [stderr]     |                ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item '<futures::sync::mpsc::UnboundedSender<T>>::send': renamed to `unbounded_send`
[INFO] [stderr]    --> src/commands/mod.rs:102:16
[INFO] [stderr]     |
[INFO] [stderr] 102 |             tx.send(format!("{}{}", identifier, " OK LOGOUT completed"))
[INFO] [stderr]     |                ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item '<futures::sync::mpsc::UnboundedSender<T>>::send': renamed to `unbounded_send`
[INFO] [stderr]    --> src/commands/mod.rs:128:16
[INFO] [stderr]     |
[INFO] [stderr] 128 |             tx.send(format!("{} {}", identifier, "OK LOGIN completed\r\n"))
[INFO] [stderr]     |                ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item '<futures::sync::mpsc::UnboundedSender<T>>::send': renamed to `unbounded_send`
[INFO] [stderr]    --> src/commands/mod.rs:151:16
[INFO] [stderr]     |
[INFO] [stderr] 151 |             tx.send(format!("{} {}", identifier, "OK NOOP completed\r\n"))
[INFO] [stderr]     |                ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item '<futures::sync::mpsc::UnboundedSender<T>>::send': renamed to `unbounded_send`
[INFO] [stderr]    --> src/commands/mod.rs:174:16
[INFO] [stderr]     |
[INFO] [stderr] 174 |             tx.send(format!("{}", "* 1 EXISTS\r\n")).unwrap();
[INFO] [stderr]     |                ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item '<futures::sync::mpsc::UnboundedSender<T>>::send': renamed to `unbounded_send`
[INFO] [stderr]    --> src/commands/mod.rs:175:16
[INFO] [stderr]     |
[INFO] [stderr] 175 |             tx.send(format!("{}", "* 0 RECENT\r\n")).unwrap();
[INFO] [stderr]     |                ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item '<futures::sync::mpsc::UnboundedSender<T>>::send': renamed to `unbounded_send`
[INFO] [stderr]    --> src/commands/mod.rs:176:16
[INFO] [stderr]     |
[INFO] [stderr] 176 |             tx.send(format!(
[INFO] [stderr]     |                ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item '<futures::sync::mpsc::UnboundedSender<T>>::send': renamed to `unbounded_send`
[INFO] [stderr]    --> src/commands/mod.rs:180:16
[INFO] [stderr]     |
[INFO] [stderr] 180 |             tx.send(format!("{}", "* OK [UIDNEXT 1] Predicted next UID\r\n"))
[INFO] [stderr]     |                ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item '<futures::sync::mpsc::UnboundedSender<T>>::send': renamed to `unbounded_send`
[INFO] [stderr]    --> src/commands/mod.rs:182:16
[INFO] [stderr]     |
[INFO] [stderr] 182 |             tx.send(format!(
[INFO] [stderr]     |                ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item '<futures::sync::mpsc::UnboundedSender<T>>::send': renamed to `unbounded_send`
[INFO] [stderr]    --> src/commands/mod.rs:186:16
[INFO] [stderr]     |
[INFO] [stderr] 186 |             tx.send(format!(
[INFO] [stderr]     |                ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item '<futures::sync::mpsc::UnboundedSender<T>>::send': renamed to `unbounded_send`
[INFO] [stderr]    --> src/commands/mod.rs:190:16
[INFO] [stderr]     |
[INFO] [stderr] 190 |             tx.send(format!(
[INFO] [stderr]     |                ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item '<futures::sync::mpsc::UnboundedSender<T>>::send': renamed to `unbounded_send`
[INFO] [stderr]    --> src/commands/mod.rs:216:16
[INFO] [stderr]     |
[INFO] [stderr] 216 |             tx.send(format!("{} {}", identifier, "OK CHECK Completed\r\n"))
[INFO] [stderr]     |                ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item '<futures::sync::mpsc::UnboundedSender<T>>::send': renamed to `unbounded_send`
[INFO] [stderr]   --> src/commands/authenticate.rs:18:16
[INFO] [stderr]    |
[INFO] [stderr] 18 |             tx.send(format!("+\r\n")).unwrap();
[INFO] [stderr]    |                ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item '<futures::sync::mpsc::UnboundedSender<T>>::send': renamed to `unbounded_send`
[INFO] [stderr]   --> src/commands/authenticate.rs:19:16
[INFO] [stderr]    |
[INFO] [stderr] 19 |             tx.send(format!("{} {}", identifier, "+\r\n")).unwrap();
[INFO] [stderr]    |                ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item '<futures::sync::mpsc::UnboundedSender<T>>::send': renamed to `unbounded_send`
[INFO] [stderr]   --> src/commands/authenticate.rs:60:20
[INFO] [stderr]    |
[INFO] [stderr] 60 |                 tx.send(format!("+\r\n")).unwrap();
[INFO] [stderr]    |                    ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item '<futures::sync::mpsc::UnboundedSender<T>>::send': renamed to `unbounded_send`
[INFO] [stderr]   --> src/commands/authenticate.rs:61:20
[INFO] [stderr]    |
[INFO] [stderr] 61 |                 tx.send(format!(
[INFO] [stderr]    |                    ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item '<futures::sync::mpsc::UnboundedSender<T>>::send': renamed to `unbounded_send`
[INFO] [stderr]   --> src/commands/authenticate.rs:78:20
[INFO] [stderr]    |
[INFO] [stderr] 78 |                 tx.send(format!("+\r\n")).unwrap();
[INFO] [stderr]    |                    ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item '<futures::sync::mpsc::UnboundedSender<T>>::send': renamed to `unbounded_send`
[INFO] [stderr]   --> src/commands/authenticate.rs:79:20
[INFO] [stderr]    |
[INFO] [stderr] 79 |                 tx.send(format!("{} {}", identifier, "NO credentials rejected\r\n"))
[INFO] [stderr]    |                    ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'futures::Future::boxed': removed without replacement, recommended to use a local extension trait or function if needed, more details in https://github.com/alexcrichton/futures-rs/issues/228
[INFO] [stderr]   --> src/server/service.rs:21:25
[INFO] [stderr]    |
[INFO] [stderr] 21 |         future::ok(req).boxed()
[INFO] [stderr]    |                         ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item '<futures::sync::mpsc::UnboundedSender<T>>::send': renamed to `unbounded_send`
[INFO] [stderr]   --> src/commands/mod.rs:18:16
[INFO] [stderr]    |
[INFO] [stderr] 18 |             tx.send(format!(
[INFO] [stderr]    |                ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item '<futures::sync::mpsc::UnboundedSender<T>>::send': renamed to `unbounded_send`
[INFO] [stderr]   --> src/commands/mod.rs:22:16
[INFO] [stderr]    |
[INFO] [stderr] 22 |             tx.send(format!("{}{}", identifier, " OK CAPABILITY completed\r\n"))
[INFO] [stderr]    |                ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item '<futures::sync::mpsc::UnboundedSender<T>>::send': renamed to `unbounded_send`
[INFO] [stderr]   --> src/commands/mod.rs:49:16
[INFO] [stderr]    |
[INFO] [stderr] 49 |             tx.send(format!("{}", "* LIST () \"/\" INBOX\r\n")).unwrap();
[INFO] [stderr]    |                ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item '<futures::sync::mpsc::UnboundedSender<T>>::send': renamed to `unbounded_send`
[INFO] [stderr]   --> src/commands/mod.rs:50:16
[INFO] [stderr]    |
[INFO] [stderr] 50 |             tx.send(format!("{}{}", identifier, " OK LIST Completed\r\n"))
[INFO] [stderr]    |                ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item '<futures::sync::mpsc::UnboundedSender<T>>::send': renamed to `unbounded_send`
[INFO] [stderr]   --> src/commands/mod.rs:74:16
[INFO] [stderr]    |
[INFO] [stderr] 74 |             tx.send(format!("{}", "* 1 FETCH (FLAGS (\\Seen) UID 1)\r\n"))
[INFO] [stderr]    |                ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item '<futures::sync::mpsc::UnboundedSender<T>>::send': renamed to `unbounded_send`
[INFO] [stderr]   --> src/commands/mod.rs:76:16
[INFO] [stderr]    |
[INFO] [stderr] 76 |             tx.send(format!("{}{}", identifier, " OK UID FETCH completed\r\n"))
[INFO] [stderr]    |                ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item '<futures::sync::mpsc::UnboundedSender<T>>::send': renamed to `unbounded_send`
[INFO] [stderr]    --> src/commands/mod.rs:100:16
[INFO] [stderr]     |
[INFO] [stderr] 100 |             tx.send(format!("{}", "* BYE IMAP4rev1 Server logging out\r\n"))
[INFO] [stderr]     |                ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item '<futures::sync::mpsc::UnboundedSender<T>>::send': renamed to `unbounded_send`
[INFO] [stderr]    --> src/commands/mod.rs:102:16
[INFO] [stderr]     |
[INFO] [stderr] 102 |             tx.send(format!("{}{}", identifier, " OK LOGOUT completed"))
[INFO] [stderr]     |                ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item '<futures::sync::mpsc::UnboundedSender<T>>::send': renamed to `unbounded_send`
[INFO] [stderr]    --> src/commands/mod.rs:128:16
[INFO] [stderr]     |
[INFO] [stderr] 128 |             tx.send(format!("{} {}", identifier, "OK LOGIN completed\r\n"))
[INFO] [stderr]     |                ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `user`
[INFO] [stderr]   --> src/commands/authenticate.rs:46:9
[INFO] [stderr]    |
[INFO] [stderr] 46 |     let user = Users {
[INFO] [stderr]    |         ^^^^ help: consider using `_user` instead
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `pool`
[INFO] [stderr]   --> src/commands/authenticate.rs:50:9
[INFO] [stderr]    |
[INFO] [stderr] 50 |     let pool = connect_to_db();
[INFO] [stderr]    |         ^^^^ help: consider using `_pool` instead
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item '<futures::sync::mpsc::UnboundedSender<T>>::send': renamed to `unbounded_send`
[INFO] [stderr]    --> src/commands/mod.rs:151:16
[INFO] [stderr]     |
[INFO] [stderr] 151 |             tx.send(format!("{} {}", identifier, "OK NOOP completed\r\n"))
[INFO] [stderr]     |                ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item '<futures::sync::mpsc::UnboundedSender<T>>::send': renamed to `unbounded_send`
[INFO] [stderr]    --> src/commands/mod.rs:174:16
[INFO] [stderr]     |
[INFO] [stderr] 174 |             tx.send(format!("{}", "* 1 EXISTS\r\n")).unwrap();
[INFO] [stderr]     |                ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item '<futures::sync::mpsc::UnboundedSender<T>>::send': renamed to `unbounded_send`
[INFO] [stderr]    --> src/commands/mod.rs:175:16
[INFO] [stderr]     |
[INFO] [stderr] 175 |             tx.send(format!("{}", "* 0 RECENT\r\n")).unwrap();
[INFO] [stderr]     |                ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item '<futures::sync::mpsc::UnboundedSender<T>>::send': renamed to `unbounded_send`
[INFO] [stderr]    --> src/commands/mod.rs:176:16
[INFO] [stderr]     |
[INFO] [stderr] 176 |             tx.send(format!(
[INFO] [stderr]     |                ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item '<futures::sync::mpsc::UnboundedSender<T>>::send': renamed to `unbounded_send`
[INFO] [stderr]    --> src/commands/mod.rs:180:16
[INFO] [stderr]     |
[INFO] [stderr] 180 |             tx.send(format!("{}", "* OK [UIDNEXT 1] Predicted next UID\r\n"))
[INFO] [stderr]     |                ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item '<futures::sync::mpsc::UnboundedSender<T>>::send': renamed to `unbounded_send`
[INFO] [stderr]    --> src/commands/mod.rs:182:16
[INFO] [stderr]     |
[INFO] [stderr] 182 |             tx.send(format!(
[INFO] [stderr]     |                ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item '<futures::sync::mpsc::UnboundedSender<T>>::send': renamed to `unbounded_send`
[INFO] [stderr]    --> src/commands/mod.rs:186:16
[INFO] [stderr]     |
[INFO] [stderr] 186 |             tx.send(format!(
[INFO] [stderr]     |                ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item '<futures::sync::mpsc::UnboundedSender<T>>::send': renamed to `unbounded_send`
[INFO] [stderr]    --> src/commands/mod.rs:190:16
[INFO] [stderr]     |
[INFO] [stderr] 190 |             tx.send(format!(
[INFO] [stderr]     |                ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item '<futures::sync::mpsc::UnboundedSender<T>>::send': renamed to `unbounded_send`
[INFO] [stderr]    --> src/commands/mod.rs:216:16
[INFO] [stderr]     |
[INFO] [stderr] 216 |             tx.send(format!("{} {}", identifier, "OK CHECK Completed\r\n"))
[INFO] [stderr]     |                ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item '<futures::sync::mpsc::UnboundedSender<T>>::send': renamed to `unbounded_send`
[INFO] [stderr]   --> src/commands/authenticate.rs:18:16
[INFO] [stderr]    |
[INFO] [stderr] 18 |             tx.send(format!("+\r\n")).unwrap();
[INFO] [stderr]    |                ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item '<futures::sync::mpsc::UnboundedSender<T>>::send': renamed to `unbounded_send`
[INFO] [stderr]   --> src/commands/authenticate.rs:19:16
[INFO] [stderr]    |
[INFO] [stderr] 19 |             tx.send(format!("{} {}", identifier, "+\r\n")).unwrap();
[INFO] [stderr]    |                ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item '<futures::sync::mpsc::UnboundedSender<T>>::send': renamed to `unbounded_send`
[INFO] [stderr]   --> src/commands/authenticate.rs:60:20
[INFO] [stderr]    |
[INFO] [stderr] 60 |                 tx.send(format!("+\r\n")).unwrap();
[INFO] [stderr]    |                    ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item '<futures::sync::mpsc::UnboundedSender<T>>::send': renamed to `unbounded_send`
[INFO] [stderr]   --> src/commands/authenticate.rs:61:20
[INFO] [stderr]    |
[INFO] [stderr] 61 |                 tx.send(format!(
[INFO] [stderr]    |                    ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item '<futures::sync::mpsc::UnboundedSender<T>>::send': renamed to `unbounded_send`
[INFO] [stderr]   --> src/commands/authenticate.rs:78:20
[INFO] [stderr]    |
[INFO] [stderr] 78 |                 tx.send(format!("+\r\n")).unwrap();
[INFO] [stderr]    |                    ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item '<futures::sync::mpsc::UnboundedSender<T>>::send': renamed to `unbounded_send`
[INFO] [stderr]   --> src/commands/authenticate.rs:79:20
[INFO] [stderr]    |
[INFO] [stderr] 79 |                 tx.send(format!("{} {}", identifier, "NO credentials rejected\r\n"))
[INFO] [stderr]    |                    ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'futures::Future::boxed': removed without replacement, recommended to use a local extension trait or function if needed, more details in https://github.com/alexcrichton/futures-rs/issues/228
[INFO] [stderr]   --> src/server/service.rs:21:25
[INFO] [stderr]    |
[INFO] [stderr] 21 |         future::ok(req).boxed()
[INFO] [stderr]    |                         ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `user`
[INFO] [stderr]   --> src/commands/authenticate.rs:46:9
[INFO] [stderr]    |
[INFO] [stderr] 46 |     let user = Users {
[INFO] [stderr]    |         ^^^^ help: consider using `_user` instead
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `pool`
[INFO] [stderr]   --> src/commands/authenticate.rs:50:9
[INFO] [stderr]    |
[INFO] [stderr] 50 |     let pool = connect_to_db();
[INFO] [stderr]    |         ^^^^ help: consider using `_pool` instead
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `LineProto`
[INFO] [stderr]  --> src/server/proto.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub struct LineProto;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Echo`
[INFO] [stderr]  --> src/server/service.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub struct Echo;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `main`
[INFO] [stderr]  --> src/server/mod.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub fn main() {
[INFO] [stderr]   | ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: crate `IMAPServer` should have a snake case name such as `imapserver`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(non_snake_case)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]   --> src/main.rs:75:17
[INFO] [stderr]    |
[INFO] [stderr] 75 |         tx.send(format!("{}", "* OK [CAPABILITY IMAP4rev1 AUTH=PLAIN UTF8=ACCEPT LOGINDISABLED] IMAP4rev1 Service Ready\r\n")).unwrap();
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"* OK [CAPABILITY IMAP4rev1 AUTH=PLAIN UTF8=ACCEPT LOGINDISABLED] IMAP4rev1 Service Ready\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]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]   --> src/main.rs:92:57
[INFO] [stderr]    |
[INFO] [stderr] 92 |             let line = line.and_then(|(reader, vec)| if vec.len() == 0 {
[INFO] [stderr]    |                                                         ^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `vec.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: useless use of `format!`
[INFO] [stderr]    --> src/main.rs:132:37
[INFO] [stderr]     |
[INFO] [stderr] 132 |                             tx.send(format!("{}", "* BAD Command not known\r\n"))
[INFO] [stderr]     |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"* BAD Command not known\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]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `LineProto`
[INFO] [stderr]  --> src/server/proto.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub struct LineProto;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Echo`
[INFO] [stderr]  --> src/server/service.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub struct Echo;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `main`
[INFO] [stderr]  --> src/server/mod.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub fn main() {
[INFO] [stderr]   | ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: crate `IMAPServer` should have a snake case name such as `imapserver`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(non_snake_case)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]   --> src/commands/mod.rs:18:21
[INFO] [stderr]    |
[INFO] [stderr] 18 |               tx.send(format!(
[INFO] [stderr]    |  _____________________^
[INFO] [stderr] 19 | |                 "{}",
[INFO] [stderr] 20 | |                 "* CAPABILITY IMAP4rev1 AUTH=PLAIN UTF8=ACCEPT LOGINDISABLED\r\n"
[INFO] [stderr] 21 | |             )).unwrap();
[INFO] [stderr]    | |_____________^ help: consider using .to_string(): `"* CAPABILITY IMAP4rev1 AUTH=PLAIN UTF8=ACCEPT LOGINDISABLED\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]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]   --> src/main.rs:75:17
[INFO] [stderr]    |
[INFO] [stderr] 75 |         tx.send(format!("{}", "* OK [CAPABILITY IMAP4rev1 AUTH=PLAIN UTF8=ACCEPT LOGINDISABLED] IMAP4rev1 Service Ready\r\n")).unwrap();
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"* OK [CAPABILITY IMAP4rev1 AUTH=PLAIN UTF8=ACCEPT LOGINDISABLED] IMAP4rev1 Service Ready\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]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]   --> src/main.rs:92:57
[INFO] [stderr]    |
[INFO] [stderr] 92 |             let line = line.and_then(|(reader, vec)| if vec.len() == 0 {
[INFO] [stderr]    |                                                         ^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `vec.is_empty()`
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]   --> src/commands/mod.rs:49:21
[INFO] [stderr]    |
[INFO] [stderr]    |
[INFO] [stderr] 49 |             tx.send(format!("{}", "* LIST () \"/\" INBOX\r\n")).unwrap();
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"* LIST () \"/\" INBOX\r\n".to_string()`
[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]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]   --> src/commands/mod.rs:74:21
[INFO] [stderr]    |
[INFO] [stderr] 74 |             tx.send(format!("{}", "* 1 FETCH (FLAGS (\\Seen) UID 1)\r\n"))
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"* 1 FETCH (FLAGS (\\Seen) UID 1)\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]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/main.rs:132:37
[INFO] [stderr]     |
[INFO] [stderr] 132 |                             tx.send(format!("{}", "* BAD Command not known\r\n"))
[INFO] [stderr]     |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"* BAD Command not known\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]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/commands/mod.rs:100:21
[INFO] [stderr]     |
[INFO] [stderr] 100 |             tx.send(format!("{}", "* BYE IMAP4rev1 Server logging out\r\n"))
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"* BYE IMAP4rev1 Server logging out\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]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]   --> src/commands/authenticate.rs:18:21
[INFO] [stderr]    |
[INFO] [stderr] 18 |             tx.send(format!("+\r\n")).unwrap();
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"+\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: single-character string constant used as pattern
[INFO] [stderr]   --> src/commands/authenticate.rs:44:42
[INFO] [stderr]    |
[INFO] [stderr] 44 |     let up: Vec<&str> = string_str.split("\u{0000}").collect();
[INFO] [stderr]    |                                          ^^^^^^^^^^ help: try using a char instead: `'\u{0000}'`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::single_char_pattern)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]   --> src/commands/authenticate.rs:60:25
[INFO] [stderr]    |
[INFO] [stderr] 60 |                 tx.send(format!("+\r\n")).unwrap();
[INFO] [stderr]    |                         ^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"+\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: useless use of `format!`
[INFO] [stderr]   --> src/commands/authenticate.rs:78:25
[INFO] [stderr]    |
[INFO] [stderr] 78 |                 tx.send(format!("+\r\n")).unwrap();
[INFO] [stderr]    |                         ^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"+\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: useless use of `format!`
[INFO] [stderr]    --> src/commands/mod.rs:174:21
[INFO] [stderr]     |
[INFO] [stderr] 174 |             tx.send(format!("{}", "* 1 EXISTS\r\n")).unwrap();
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"* 1 EXISTS\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]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/commands/mod.rs:175:21
[INFO] [stderr]     |
[INFO] [stderr] 175 |             tx.send(format!("{}", "* 0 RECENT\r\n")).unwrap();
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"* 0 RECENT\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]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/commands/mod.rs:176:21
[INFO] [stderr]     |
[INFO] [stderr] 176 |               tx.send(format!(
[INFO] [stderr]     |  _____________________^
[INFO] [stderr] 177 | |                 "{}",
[INFO] [stderr] 178 | |                 "* OK [UNSEEN 1] Message 1 is first unseen\r\n"
[INFO] [stderr] 179 | |             )).unwrap();
[INFO] [stderr]     | |_____________^ help: consider using .to_string(): `"* OK [UNSEEN 1] Message 1 is first unseen\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]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/commands/mod.rs:180:21
[INFO] [stderr]     |
[INFO] [stderr] 180 |             tx.send(format!("{}", "* OK [UIDNEXT 1] Predicted next UID\r\n"))
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"* OK [UIDNEXT 1] Predicted next UID\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]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/commands/mod.rs:182:21
[INFO] [stderr]     |
[INFO] [stderr] 182 |               tx.send(format!(
[INFO] [stderr]     |  _____________________^
[INFO] [stderr] 183 | |                 "{}",
[INFO] [stderr] 184 | |                 "* FLAGS (\\Answered \\Flagged \\Deleted \\Seen \\Draft)\r\n"
[INFO] [stderr] 185 | |             )).unwrap();
[INFO] [stderr]     | |_____________^ help: consider using .to_string(): `"* FLAGS (\\Answered \\Flagged \\Deleted \\Seen \\Draft)\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]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/commands/mod.rs:186:21
[INFO] [stderr]     |
[INFO] [stderr] 186 |               tx.send(format!(
[INFO] [stderr]     |  _____________________^
[INFO] [stderr] 187 | |                 "{}",
[INFO] [stderr] 188 | |                 "* OK [PERMANENTFLAGS (\\Deleted \\Seen \\*)] Limited\r\n"
[INFO] [stderr] 189 | |             )).unwrap();
[INFO] [stderr]     | |_____________^ help: consider using .to_string(): `"* OK [PERMANENTFLAGS (\\Deleted \\Seen \\*)] Limited\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]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]   --> src/commands/mod.rs:18:21
[INFO] [stderr]    |
[INFO] [stderr] 18 |               tx.send(format!(
[INFO] [stderr]    |  _____________________^
[INFO] [stderr] 19 | |                 "{}",
[INFO] [stderr] 20 | |                 "* CAPABILITY IMAP4rev1 AUTH=PLAIN UTF8=ACCEPT LOGINDISABLED\r\n"
[INFO] [stderr] 21 | |             )).unwrap();
[INFO] [stderr]    | |_____________^ help: consider using .to_string(): `"* CAPABILITY IMAP4rev1 AUTH=PLAIN UTF8=ACCEPT LOGINDISABLED\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]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]   --> src/commands/mod.rs:49:21
[INFO] [stderr]    |
[INFO] [stderr] 49 |             tx.send(format!("{}", "* LIST () \"/\" INBOX\r\n")).unwrap();
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"* LIST () \"/\" INBOX\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]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]   --> src/commands/mod.rs:74:21
[INFO] [stderr]    |
[INFO] [stderr] 74 |             tx.send(format!("{}", "* 1 FETCH (FLAGS (\\Seen) UID 1)\r\n"))
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"* 1 FETCH (FLAGS (\\Seen) UID 1)\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]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/commands/mod.rs:100:21
[INFO] [stderr]     |
[INFO] [stderr] 100 |             tx.send(format!("{}", "* BYE IMAP4rev1 Server logging out\r\n"))
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"* BYE IMAP4rev1 Server logging out\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]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]   --> src/commands/authenticate.rs:18:21
[INFO] [stderr]    |
[INFO] [stderr] 18 |             tx.send(format!("+\r\n")).unwrap();
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"+\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: single-character string constant used as pattern
[INFO] [stderr]   --> src/commands/authenticate.rs:44:42
[INFO] [stderr]    |
[INFO] [stderr] 44 |     let up: Vec<&str> = string_str.split("\u{0000}").collect();
[INFO] [stderr]    |                                          ^^^^^^^^^^ help: try using a char instead: `'\u{0000}'`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::single_char_pattern)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]   --> src/commands/authenticate.rs:60:25
[INFO] [stderr]    |
[INFO] [stderr] 60 |                 tx.send(format!("+\r\n")).unwrap();
[INFO] [stderr]    |                         ^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"+\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: useless use of `format!`
[INFO] [stderr]   --> src/commands/authenticate.rs:78:25
[INFO] [stderr]    |
[INFO] [stderr] 78 |                 tx.send(format!("+\r\n")).unwrap();
[INFO] [stderr]    |                         ^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"+\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: useless use of `format!`
[INFO] [stderr]    --> src/commands/mod.rs:174:21
[INFO] [stderr]     |
[INFO] [stderr] 174 |             tx.send(format!("{}", "* 1 EXISTS\r\n")).unwrap();
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"* 1 EXISTS\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]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/commands/mod.rs:175:21
[INFO] [stderr]     |
[INFO] [stderr] 175 |             tx.send(format!("{}", "* 0 RECENT\r\n")).unwrap();
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"* 0 RECENT\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]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/commands/mod.rs:176:21
[INFO] [stderr]     |
[INFO] [stderr] 176 |               tx.send(format!(
[INFO] [stderr]     |  _____________________^
[INFO] [stderr] 177 | |                 "{}",
[INFO] [stderr] 178 | |                 "* OK [UNSEEN 1] Message 1 is first unseen\r\n"
[INFO] [stderr] 179 | |             )).unwrap();
[INFO] [stderr]     | |_____________^ help: consider using .to_string(): `"* OK [UNSEEN 1] Message 1 is first unseen\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]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/commands/mod.rs:180:21
[INFO] [stderr]     |
[INFO] [stderr] 180 |             tx.send(format!("{}", "* OK [UIDNEXT 1] Predicted next UID\r\n"))
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"* OK [UIDNEXT 1] Predicted next UID\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]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/commands/mod.rs:182:21
[INFO] [stderr]     |
[INFO] [stderr] 182 |               tx.send(format!(
[INFO] [stderr]     |  _____________________^
[INFO] [stderr] 183 | |                 "{}",
[INFO] [stderr] 184 | |                 "* FLAGS (\\Answered \\Flagged \\Deleted \\Seen \\Draft)\r\n"
[INFO] [stderr] 185 | |             )).unwrap();
[INFO] [stderr]     | |_____________^ help: consider using .to_string(): `"* FLAGS (\\Answered \\Flagged \\Deleted \\Seen \\Draft)\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]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/commands/mod.rs:186:21
[INFO] [stderr]     |
[INFO] [stderr] 186 |               tx.send(format!(
[INFO] [stderr]     |  _____________________^
[INFO] [stderr] 187 | |                 "{}",
[INFO] [stderr] 188 | |                 "* OK [PERMANENTFLAGS (\\Deleted \\Seen \\*)] Limited\r\n"
[INFO] [stderr] 189 | |             )).unwrap();
[INFO] [stderr]     | |_____________^ help: consider using .to_string(): `"* OK [PERMANENTFLAGS (\\Deleted \\Seen \\*)] Limited\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]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 20.78s
[INFO] running `"docker" "inspect" "c1a373dc30f889a7ea30ed707d2c152462898a81b5fcb30c8132efc94d80d2b4"`
[INFO] running `"docker" "rm" "-f" "c1a373dc30f889a7ea30ed707d2c152462898a81b5fcb30c8132efc94d80d2b4"`
[INFO] [stdout] c1a373dc30f889a7ea30ed707d2c152462898a81b5fcb30c8132efc94d80d2b4