[INFO] fetching crate rust-smtp-server 0.1.1...
[INFO] checking rust-smtp-server-0.1.1 against 1.95.0 for pr-155915
[INFO] extracting crate rust-smtp-server 0.1.1 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate rust-smtp-server 0.1.1
[INFO] finished tweaking crates.io crate rust-smtp-server 0.1.1
[INFO] tweaked toml for crates.io crate rust-smtp-server 0.1.1 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate rust-smtp-server 0.1.1 on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate rust-smtp-server 0.1.1 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" "+1.95.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: file `/workspace/builds/worker-1-tc1/source/examples/simple.rs` found to be present in multiple build targets:
[INFO] [stderr]   * `bin` target `simple`
[INFO] [stderr]   * `example` target `simple`
[INFO] [stderr] warning: file `/workspace/builds/worker-1-tc1/source/examples/with_starttls_support.rs` found to be present in multiple build targets:
[INFO] [stderr]   * `bin` target `with_starttls_support`
[INFO] [stderr]   * `example` target `with_starttls_support`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tokio-macros v2.0.0
[INFO] [stderr]   Downloaded rustls-pemfile v1.0.2
[INFO] [stderr]   Downloaded rustls v0.20.8
[INFO] [stderr]   Downloaded tokio v1.27.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f2b2655d7c192055d17fea04034b42300185e5788095a97c7acd5620b88e5897
[INFO] running `Command { std: "docker" "start" "-a" "f2b2655d7c192055d17fea04034b42300185e5788095a97c7acd5620b88e5897", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f2b2655d7c192055d17fea04034b42300185e5788095a97c7acd5620b88e5897", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f2b2655d7c192055d17fea04034b42300185e5788095a97c7acd5620b88e5897", kill_on_drop: false }`
[INFO] [stdout] f2b2655d7c192055d17fea04034b42300185e5788095a97c7acd5620b88e5897
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+1.95.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7e070ec99d14af1d8e93be652689b3249666d8296a5fbb1864b7266323ef234c
[INFO] running `Command { std: "docker" "start" "-a" "7e070ec99d14af1d8e93be652689b3249666d8296a5fbb1864b7266323ef234c", kill_on_drop: false }`
[INFO] [stderr] warning: file `/opt/rustwide/workdir/examples/with_starttls_support.rs` found to be present in multiple build targets:
[INFO] [stderr]   * `bin` target `with_starttls_support`
[INFO] [stderr]   * `example` target `with_starttls_support`
[INFO] [stderr] warning: file `/opt/rustwide/workdir/examples/simple.rs` found to be present in multiple build targets:
[INFO] [stderr]   * `bin` target `simple`
[INFO] [stderr]   * `example` target `simple`
[INFO] [stderr]    Compiling libc v0.2.141
[INFO] [stderr]    Compiling cc v1.0.79
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling parking_lot_core v0.9.7
[INFO] [stderr]     Checking once_cell v1.17.1
[INFO] [stderr]     Checking smallvec v1.10.0
[INFO] [stderr]    Compiling rustls v0.20.8
[INFO] [stderr]    Compiling lock_api v0.4.9
[INFO] [stderr]    Compiling tokio v1.27.0
[INFO] [stderr]    Compiling thiserror v1.0.40
[INFO] [stderr]    Compiling anyhow v1.0.70
[INFO] [stderr]     Checking pin-project-lite v0.2.9
[INFO] [stderr]    Compiling async-trait v0.1.68
[INFO] [stderr]     Checking bytes v1.4.0
[INFO] [stderr]    Compiling syn v2.0.13
[INFO] [stderr]     Checking base64 v0.21.0
[INFO] [stderr]     Checking rustls-pemfile v1.0.2
[INFO] [stderr]     Checking signal-hook-registry v1.4.1
[INFO] [stderr]     Checking mio v0.8.6
[INFO] [stderr]     Checking num_cpus v1.15.0
[INFO] [stderr]     Checking socket2 v0.4.9
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]    Compiling tokio-macros v2.0.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.40
[INFO] [stderr]     Checking webpki v0.22.0
[INFO] [stderr]     Checking sct v0.7.0
[INFO] [stderr]     Checking tokio-rustls v0.23.4
[INFO] [stderr]     Checking rust-smtp-server v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Session`
[INFO] [stdout]  --> src/server.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     Session,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::pin::Pin`
[INFO] [stdout]  --> src/server.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::pin::Pin;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tokio::sync::Mutex`
[INFO] [stdout]   --> src/server.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use tokio::sync::Mutex;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `AsyncReadExt` and `BufWriter`
[INFO] [stdout]   --> src/server.rs:15:23
[INFO] [stdout]    |
[INFO] [stdout] 15 | use tokio::io::{self, BufWriter, AsyncBufReadExt, AsyncReadExt};
[INFO] [stdout]    |                       ^^^^^^^^^                   ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `TcpStream`
[INFO] [stdout]   --> src/server.rs:16:31
[INFO] [stdout]    |
[INFO] [stdout] 16 | use tokio::net::{TcpListener, TcpStream};
[INFO] [stdout]    |                               ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::pin::Pin`
[INFO] [stdout]  --> src/conn.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::pin::Pin;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Context` and `Poll`
[INFO] [stdout]  --> src/conn.rs:8:17
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::task::{Context, Poll};
[INFO] [stdout]   |                 ^^^^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `TcpSocket`, `tcp::ReadHalf`, and `tcp::WriteHalf`
[INFO] [stdout]   --> src/conn.rs:24:18
[INFO] [stdout]    |
[INFO] [stdout] 24 | use tokio::net::{tcp::ReadHalf, tcp::WriteHalf, TcpStream, TcpSocket};
[INFO] [stdout]    |                  ^^^^^^^^^^^^^  ^^^^^^^^^^^^^^             ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `TlsAcceptor` and `rustls::ServerConfig`
[INFO] [stdout]   --> src/conn.rs:25:20
[INFO] [stdout]    |
[INFO] [stdout] 25 | use tokio_rustls::{rustls::ServerConfig, TlsAcceptor, server::TlsStream};
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Arc`
[INFO] [stdout]  --> src/lengthlimit_reader.rs:1:17
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::sync::{Arc};
[INFO] [stdout]   |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `ReadHalf` and `net::TcpStream`
[INFO] [stdout]  --> src/lengthlimit_reader.rs:6:18
[INFO] [stdout]   |
[INFO] [stdout] 6 | use tokio::{io::{ReadHalf, AsyncRead, AsyncReadExt}, net::TcpStream};
[INFO] [stdout]   |                  ^^^^^^^^                            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::stream::Stream`
[INFO] [stdout]  --> src/lengthlimit_reader.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use crate::stream::Stream;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::sync::Mutex`
[INFO] [stdout]  --> src/lengthlimit_reader.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::sync::Mutex;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::stream::Stream`
[INFO] [stdout]  --> src/textproto/textproto.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::stream::Stream;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `IpAddr`, `Ipv4Addr`, and `SocketAddr`
[INFO] [stdout]  --> src/textproto/textproto.rs:4:16
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::net::{IpAddr, Ipv4Addr, SocketAddr};
[INFO] [stdout]   |                ^^^^^^  ^^^^^^^^  ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::pin::Pin`
[INFO] [stdout]  --> src/textproto/textproto.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::pin::Pin;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Arc` and `Mutex`
[INFO] [stdout]  --> src/textproto/textproto.rs:6:17
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::sync::{Arc, Mutex};
[INFO] [stdout]   |                 ^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tokio::net::TcpStream`
[INFO] [stdout]  --> src/textproto/textproto.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use tokio::net::TcpStream;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `AsyncBufReadExt`, `AsyncWriteExt`, and `BufReader`
[INFO] [stdout]  --> src/textproto/textproto.rs:8:40
[INFO] [stdout]   |
[INFO] [stdout] 8 | use tokio::io::{AsyncWrite, AsyncRead, AsyncWriteExt, AsyncBufReadExt, BufReader};
[INFO] [stdout]   |                                        ^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Arc` and `Mutex`
[INFO] [stdout]  --> src/textproto/writer.rs:1:17
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::sync::{Arc, Mutex};
[INFO] [stdout]   |                 ^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Session`
[INFO] [stdout]  --> src/server.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     Session,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::pin::Pin`
[INFO] [stdout]  --> src/server.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::pin::Pin;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tokio::sync::Mutex`
[INFO] [stdout]   --> src/server.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use tokio::sync::Mutex;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `AsyncReadExt` and `BufWriter`
[INFO] [stdout]   --> src/server.rs:15:23
[INFO] [stdout]    |
[INFO] [stdout] 15 | use tokio::io::{self, BufWriter, AsyncBufReadExt, AsyncReadExt};
[INFO] [stdout]    |                       ^^^^^^^^^                   ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `TcpStream`
[INFO] [stdout]   --> src/server.rs:16:31
[INFO] [stdout]    |
[INFO] [stdout] 16 | use tokio::net::{TcpListener, TcpStream};
[INFO] [stdout]    |                               ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::pin::Pin`
[INFO] [stdout]  --> src/conn.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::pin::Pin;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Context` and `Poll`
[INFO] [stdout]  --> src/conn.rs:8:17
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::task::{Context, Poll};
[INFO] [stdout]   |                 ^^^^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `TcpSocket`, `tcp::ReadHalf`, and `tcp::WriteHalf`
[INFO] [stdout]   --> src/conn.rs:24:18
[INFO] [stdout]    |
[INFO] [stdout] 24 | use tokio::net::{tcp::ReadHalf, tcp::WriteHalf, TcpStream, TcpSocket};
[INFO] [stdout]    |                  ^^^^^^^^^^^^^  ^^^^^^^^^^^^^^             ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `TlsAcceptor` and `rustls::ServerConfig`
[INFO] [stdout]   --> src/conn.rs:25:20
[INFO] [stdout]    |
[INFO] [stdout] 25 | use tokio_rustls::{rustls::ServerConfig, TlsAcceptor, server::TlsStream};
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Arc`
[INFO] [stdout]  --> src/lengthlimit_reader.rs:1:17
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::sync::{Arc};
[INFO] [stdout]   |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `ReadHalf` and `net::TcpStream`
[INFO] [stdout]  --> src/lengthlimit_reader.rs:6:18
[INFO] [stdout]   |
[INFO] [stdout] 6 | use tokio::{io::{ReadHalf, AsyncRead, AsyncReadExt}, net::TcpStream};
[INFO] [stdout]   |                  ^^^^^^^^                            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::stream::Stream`
[INFO] [stdout]  --> src/lengthlimit_reader.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use crate::stream::Stream;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::sync::Mutex`
[INFO] [stdout]  --> src/lengthlimit_reader.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::sync::Mutex;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::stream::Stream`
[INFO] [stdout]  --> src/textproto/textproto.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::stream::Stream;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `IpAddr`, `Ipv4Addr`, and `SocketAddr`
[INFO] [stdout]  --> src/textproto/textproto.rs:4:16
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::net::{IpAddr, Ipv4Addr, SocketAddr};
[INFO] [stdout]   |                ^^^^^^  ^^^^^^^^  ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::pin::Pin`
[INFO] [stdout]  --> src/textproto/textproto.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::pin::Pin;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Arc` and `Mutex`
[INFO] [stdout]  --> src/textproto/textproto.rs:6:17
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::sync::{Arc, Mutex};
[INFO] [stdout]   |                 ^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tokio::net::TcpStream`
[INFO] [stdout]  --> src/textproto/textproto.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use tokio::net::TcpStream;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `AsyncBufReadExt`, `AsyncWriteExt`, and `BufReader`
[INFO] [stdout]  --> src/textproto/textproto.rs:8:40
[INFO] [stdout]   |
[INFO] [stdout] 8 | use tokio::io::{AsyncWrite, AsyncRead, AsyncWriteExt, AsyncBufReadExt, BufReader};
[INFO] [stdout]   |                                        ^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Arc` and `Mutex`
[INFO] [stdout]  --> src/textproto/writer.rs:1:17
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::sync::{Arc, Mutex};
[INFO] [stdout]   |                 ^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/server.rs:75:13
[INFO] [stdout]    |
[INFO] [stdout] 75 |         let mut server = Arc::new(self);
[INFO] [stdout]    |             ----^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/server.rs:79:25
[INFO] [stdout]    |
[INFO] [stdout] 79 |                     let mut server = server.clone();
[INFO] [stdout]    |                         ----^^^^^^
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/server.rs:75:13
[INFO] [stdout]    |
[INFO] [stdout] 75 |         let mut server = Arc::new(self);
[INFO] [stdout]    |             ----^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/server.rs:79:25
[INFO] [stdout]    |
[INFO] [stdout] 79 |                     let mut server = server.clone();
[INFO] [stdout]    |                         ----^^^^^^
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `username`
[INFO] [stdout]   --> src/backend.rs:50:30
[INFO] [stdout]    |
[INFO] [stdout] 50 |     fn auth_plain(&mut self, username: &str, password: &str) -> Result<()> {
[INFO] [stdout]    |                              ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_username`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `password`
[INFO] [stdout]   --> src/backend.rs:50:46
[INFO] [stdout]    |
[INFO] [stdout] 50 |     fn auth_plain(&mut self, username: &str, password: &str) -> Result<()> {
[INFO] [stdout]    |                                              ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_password`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `username`
[INFO] [stdout]   --> src/backend.rs:50:30
[INFO] [stdout]    |
[INFO] [stdout] 50 |     fn auth_plain(&mut self, username: &str, password: &str) -> Result<()> {
[INFO] [stdout]    |                              ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_username`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `password`
[INFO] [stdout]   --> src/backend.rs:50:46
[INFO] [stdout]    |
[INFO] [stdout] 50 |     fn auth_plain(&mut self, username: &str, password: &str) -> Result<()> {
[INFO] [stdout]    |                                              ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_password`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/data.rs:94:13
[INFO] [stdout]    |
[INFO] [stdout] 94 |         let mut this = self.get_mut();
[INFO] [stdout]    |             ----^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/data.rs:94:13
[INFO] [stdout]    |
[INFO] [stdout] 94 |         let mut this = self.get_mut();
[INFO] [stdout]    |             ----^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]   --> src/textproto/writer.rs:98:24
[INFO] [stdout]    |
[INFO] [stdout] 98 |             if let Err(e) = self.w.w.write_u8(c).await {
[INFO] [stdout]    |                        ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]   --> src/textproto/writer.rs:98:24
[INFO] [stdout]    |
[INFO] [stdout] 98 |             if let Err(e) = self.w.w.write_u8(c).await {
[INFO] [stdout]    |                        ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function cannot return without recursing
[INFO] [stdout]    --> src/textproto/writer.rs:135:5
[INFO] [stdout]     |
[INFO] [stdout] 135 | /     fn poll_write(
[INFO] [stdout] 136 | |         self: std::pin::Pin<&mut Self>,
[INFO] [stdout] 137 | |         cx: &mut std::task::Context<'_>,
[INFO] [stdout] 138 | |         buf: &[u8],
[INFO] [stdout] 139 | |     ) -> std::task::Poll<std::io::Result<usize>> {
[INFO] [stdout]     | |________________________________________________^ cannot return without recursing
[INFO] [stdout] 140 |           self.poll_write(cx, buf)
[INFO] [stdout]     |           ------------------------ recursive call site
[INFO] [stdout]     |
[INFO] [stdout]     = help: a `loop` may express intention better if this is on purpose
[INFO] [stdout]     = note: `#[warn(unconditional_recursion)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function cannot return without recursing
[INFO] [stdout]    --> src/textproto/writer.rs:143:5
[INFO] [stdout]     |
[INFO] [stdout] 143 | /     fn poll_flush(
[INFO] [stdout] 144 | |         self: std::pin::Pin<&mut Self>,
[INFO] [stdout] 145 | |         cx: &mut std::task::Context<'_>,
[INFO] [stdout] 146 | |     ) -> std::task::Poll<std::io::Result<()>> {
[INFO] [stdout]     | |_____________________________________________^ cannot return without recursing
[INFO] [stdout] 147 |           self.poll_flush(cx)
[INFO] [stdout]     |           ------------------- recursive call site
[INFO] [stdout]     |
[INFO] [stdout]     = help: a `loop` may express intention better if this is on purpose
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function cannot return without recursing
[INFO] [stdout]    --> src/textproto/writer.rs:150:5
[INFO] [stdout]     |
[INFO] [stdout] 150 | /     fn poll_shutdown(
[INFO] [stdout] 151 | |         self: std::pin::Pin<&mut Self>,
[INFO] [stdout] 152 | |         cx: &mut std::task::Context<'_>,
[INFO] [stdout] 153 | |     ) -> std::task::Poll<std::io::Result<()>> {
[INFO] [stdout]     | |_____________________________________________^ cannot return without recursing
[INFO] [stdout] 154 |           self.poll_shutdown(cx)
[INFO] [stdout]     |           ---------------------- recursive call site
[INFO] [stdout]     |
[INFO] [stdout]     = help: a `loop` may express intention better if this is on purpose
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function cannot return without recursing
[INFO] [stdout]    --> src/textproto/writer.rs:135:5
[INFO] [stdout]     |
[INFO] [stdout] 135 | /     fn poll_write(
[INFO] [stdout] 136 | |         self: std::pin::Pin<&mut Self>,
[INFO] [stdout] 137 | |         cx: &mut std::task::Context<'_>,
[INFO] [stdout] 138 | |         buf: &[u8],
[INFO] [stdout] 139 | |     ) -> std::task::Poll<std::io::Result<usize>> {
[INFO] [stdout]     | |________________________________________________^ cannot return without recursing
[INFO] [stdout] 140 |           self.poll_write(cx, buf)
[INFO] [stdout]     |           ------------------------ recursive call site
[INFO] [stdout]     |
[INFO] [stdout]     = help: a `loop` may express intention better if this is on purpose
[INFO] [stdout]     = note: `#[warn(unconditional_recursion)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function cannot return without recursing
[INFO] [stdout]    --> src/textproto/writer.rs:143:5
[INFO] [stdout]     |
[INFO] [stdout] 143 | /     fn poll_flush(
[INFO] [stdout] 144 | |         self: std::pin::Pin<&mut Self>,
[INFO] [stdout] 145 | |         cx: &mut std::task::Context<'_>,
[INFO] [stdout] 146 | |     ) -> std::task::Poll<std::io::Result<()>> {
[INFO] [stdout]     | |_____________________________________________^ cannot return without recursing
[INFO] [stdout] 147 |           self.poll_flush(cx)
[INFO] [stdout]     |           ------------------- recursive call site
[INFO] [stdout]     |
[INFO] [stdout]     = help: a `loop` may express intention better if this is on purpose
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `ERR_TCP_AND_LMTP` is never used
[INFO] [stdout]   --> src/server.rs:20:7
[INFO] [stdout]    |
[INFO] [stdout] 20 | const ERR_TCP_AND_LMTP: &str = "smtp: cannot start LMTP server listening on a TCP socket";
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function cannot return without recursing
[INFO] [stdout]    --> src/textproto/writer.rs:150:5
[INFO] [stdout]     |
[INFO] [stdout] 150 | /     fn poll_shutdown(
[INFO] [stdout] 151 | |         self: std::pin::Pin<&mut Self>,
[INFO] [stdout] 152 | |         cx: &mut std::task::Context<'_>,
[INFO] [stdout] 153 | |     ) -> std::task::Poll<std::io::Result<()>> {
[INFO] [stdout]     | |_____________________________________________^ cannot return without recursing
[INFO] [stdout] 154 |           self.poll_shutdown(cx)
[INFO] [stdout]     |           ---------------------- recursive call site
[INFO] [stdout]     |
[INFO] [stdout]     = help: a `loop` may express intention better if this is on purpose
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `enhanced_code` is never read
[INFO] [stdout]   --> src/data.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout]  9 | pub struct SMTPError {
[INFO] [stdout]    |            --------- field in this struct
[INFO] [stdout] 10 |     code: u16,
[INFO] [stdout] 11 |     enhanced_code: EnhancedCode,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `is_temporary` is never used
[INFO] [stdout]   --> src/data.rs:65:8
[INFO] [stdout]    |
[INFO] [stdout] 36 | impl SMTPError {
[INFO] [stdout]    | -------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 65 |     fn is_temporary(&self) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `ERR_THRESHOLD` is never used
[INFO] [stdout]   --> src/conn.rs:27:7
[INFO] [stdout]    |
[INFO] [stdout] 27 | const ERR_THRESHOLD: usize = 3;
[INFO] [stdout]    |       ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `encode_xtext` is never used
[INFO] [stdout]    --> src/conn.rs:709:4
[INFO] [stdout]     |
[INFO] [stdout] 709 | fn encode_xtext(raw: String) -> String {
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `ERR_TOO_LONG_LINE` is never used
[INFO] [stdout]   --> src/lengthlimit_reader.rs:11:7
[INFO] [stdout]    |
[INFO] [stdout] 11 | const ERR_TOO_LONG_LINE: &str = "smtp: too long a line in input stream";
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `r` and `cur_line_length` are never read
[INFO] [stdout]   --> src/lengthlimit_reader.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub struct LineLimitReader<R: AsyncRead> {
[INFO] [stdout]    |            --------------- fields in this struct
[INFO] [stdout] 14 |     pub r: R,
[INFO] [stdout]    |         ^
[INFO] [stdout] ...
[INFO] [stdout] 17 |     pub cur_line_length: usize,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `read` is never used
[INFO] [stdout]   --> src/lengthlimit_reader.rs:29:14
[INFO] [stdout]    |
[INFO] [stdout] 20 | impl<R: AsyncRead + Unpin> LineLimitReader<R> {
[INFO] [stdout]    | --------------------------------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 29 |     async fn read(&mut self, b: &mut [u8]) -> Result<usize> {
[INFO] [stdout]    |              ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MyError` is never constructed
[INFO] [stdout]   --> src/textproto/textproto.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | struct MyError {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `ProtocolError` is never used
[INFO] [stdout]   --> src/textproto/textproto.rs:25:6
[INFO] [stdout]    |
[INFO] [stdout] 25 | type ProtocolError = String;
[INFO] [stdout]    |      ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Begin` is never constructed
[INFO] [stdout]   --> src/textproto/writer.rs:45:5
[INFO] [stdout]    |
[INFO] [stdout] 44 | enum WState {
[INFO] [stdout]    |      ------ variant in this enum
[INFO] [stdout] 45 |     Begin,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `ERR_TCP_AND_LMTP` is never used
[INFO] [stdout]   --> src/server.rs:20:7
[INFO] [stdout]    |
[INFO] [stdout] 20 | const ERR_TCP_AND_LMTP: &str = "smtp: cannot start LMTP server listening on a TCP socket";
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `enhanced_code` is never read
[INFO] [stdout]   --> src/data.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout]  9 | pub struct SMTPError {
[INFO] [stdout]    |            --------- field in this struct
[INFO] [stdout] 10 |     code: u16,
[INFO] [stdout] 11 |     enhanced_code: EnhancedCode,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `is_temporary` is never used
[INFO] [stdout]   --> src/data.rs:65:8
[INFO] [stdout]    |
[INFO] [stdout] 36 | impl SMTPError {
[INFO] [stdout]    | -------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 65 |     fn is_temporary(&self) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `ERR_THRESHOLD` is never used
[INFO] [stdout]   --> src/conn.rs:27:7
[INFO] [stdout]    |
[INFO] [stdout] 27 | const ERR_THRESHOLD: usize = 3;
[INFO] [stdout]    |       ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `encode_xtext` is never used
[INFO] [stdout]    --> src/conn.rs:709:4
[INFO] [stdout]     |
[INFO] [stdout] 709 | fn encode_xtext(raw: String) -> String {
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `ERR_TOO_LONG_LINE` is never used
[INFO] [stdout]   --> src/lengthlimit_reader.rs:11:7
[INFO] [stdout]    |
[INFO] [stdout] 11 | const ERR_TOO_LONG_LINE: &str = "smtp: too long a line in input stream";
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `r` and `cur_line_length` are never read
[INFO] [stdout]   --> src/lengthlimit_reader.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub struct LineLimitReader<R: AsyncRead> {
[INFO] [stdout]    |            --------------- fields in this struct
[INFO] [stdout] 14 |     pub r: R,
[INFO] [stdout]    |         ^
[INFO] [stdout] ...
[INFO] [stdout] 17 |     pub cur_line_length: usize,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `read` is never used
[INFO] [stdout]   --> src/lengthlimit_reader.rs:29:14
[INFO] [stdout]    |
[INFO] [stdout] 20 | impl<R: AsyncRead + Unpin> LineLimitReader<R> {
[INFO] [stdout]    | --------------------------------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 29 |     async fn read(&mut self, b: &mut [u8]) -> Result<usize> {
[INFO] [stdout]    |              ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MyError` is never constructed
[INFO] [stdout]   --> src/textproto/textproto.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | struct MyError {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `ProtocolError` is never used
[INFO] [stdout]   --> src/textproto/textproto.rs:25:6
[INFO] [stdout]    |
[INFO] [stdout] 25 | type ProtocolError = String;
[INFO] [stdout]    |      ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Begin` is never constructed
[INFO] [stdout]   --> src/textproto/writer.rs:45:5
[INFO] [stdout]    |
[INFO] [stdout] 44 | enum WState {
[INFO] [stdout]    |      ------ variant in this enum
[INFO] [stdout] 45 |     Begin,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/textproto/pipeline.rs:68:9
[INFO] [stdout]    |
[INFO] [stdout] 68 |         rx.await;
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 68 |         let _ = rx.await;
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/textproto/writer.rs:36:13
[INFO] [stdout]    |
[INFO] [stdout] 36 |             (*dot).close().await;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 36 |             let _ = (*dot).close().await;
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/textproto/pipeline.rs:68:9
[INFO] [stdout]    |
[INFO] [stdout] 68 |         rx.await;
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 68 |         let _ = rx.await;
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `crnl` should have an upper case name
[INFO] [stdout]   --> src/textproto/writer.rs:41:7
[INFO] [stdout]    |
[INFO] [stdout] 41 | const crnl: [u8; 2] = [b'\r', b'\n'];
[INFO] [stdout]    |       ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_upper_case_globals)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] help: convert the identifier to upper case
[INFO] [stdout]    |
[INFO] [stdout] 41 - const crnl: [u8; 2] = [b'\r', b'\n'];
[INFO] [stdout] 41 + const CRNL: [u8; 2] = [b'\r', b'\n'];
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/textproto/writer.rs:36:13
[INFO] [stdout]    |
[INFO] [stdout] 36 |             (*dot).close().await;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 36 |             let _ = (*dot).close().await;
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `dotcrnl` should have an upper case name
[INFO] [stdout]   --> src/textproto/writer.rs:42:7
[INFO] [stdout]    |
[INFO] [stdout] 42 | const dotcrnl: [u8; 3] = [b'.', b'\r', b'\n'];
[INFO] [stdout]    |       ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: convert the identifier to upper case
[INFO] [stdout]    |
[INFO] [stdout] 42 - const dotcrnl: [u8; 3] = [b'.', b'\r', b'\n'];
[INFO] [stdout] 42 + const DOTCRNL: [u8; 3] = [b'.', b'\r', b'\n'];
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `crnl` should have an upper case name
[INFO] [stdout]   --> src/textproto/writer.rs:41:7
[INFO] [stdout]    |
[INFO] [stdout] 41 | const crnl: [u8; 2] = [b'\r', b'\n'];
[INFO] [stdout]    |       ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_upper_case_globals)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] help: convert the identifier to upper case
[INFO] [stdout]    |
[INFO] [stdout] 41 - const crnl: [u8; 2] = [b'\r', b'\n'];
[INFO] [stdout] 41 + const CRNL: [u8; 2] = [b'\r', b'\n'];
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `dotcrnl` should have an upper case name
[INFO] [stdout]   --> src/textproto/writer.rs:42:7
[INFO] [stdout]    |
[INFO] [stdout] 42 | const dotcrnl: [u8; 3] = [b'.', b'\r', b'\n'];
[INFO] [stdout]    |       ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: convert the identifier to upper case
[INFO] [stdout]    |
[INFO] [stdout] 42 - const dotcrnl: [u8; 3] = [b'.', b'\r', b'\n'];
[INFO] [stdout] 42 + const DOTCRNL: [u8; 3] = [b'.', b'\r', b'\n'];
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 12.63s
[INFO] running `Command { std: "docker" "inspect" "7e070ec99d14af1d8e93be652689b3249666d8296a5fbb1864b7266323ef234c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7e070ec99d14af1d8e93be652689b3249666d8296a5fbb1864b7266323ef234c", kill_on_drop: false }`
[INFO] [stdout] 7e070ec99d14af1d8e93be652689b3249666d8296a5fbb1864b7266323ef234c
