[INFO] cloning repository https://github.com/Mubelotix/smtp-server
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Mubelotix/smtp-server" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMubelotix%2Fsmtp-server", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMubelotix%2Fsmtp-server'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9628bb7e648d4cfcf7b5e1d623e85bdbbd4891cb
[INFO] checking Mubelotix/smtp-server against beta-2020-07-24 for pr-75494-beta
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMubelotix%2Fsmtp-server" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Mubelotix/smtp-server on toolchain beta-2020-07-24
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Mubelotix/smtp-server
[INFO] finished tweaking git repo https://github.com/Mubelotix/smtp-server
[INFO] tweaked toml for git repo https://github.com/Mubelotix/smtp-server written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/Mubelotix/smtp-server already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 18ecafedbaefd942f3083de93edb8efda306a60da14a90c10b325411e7916e56
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "18ecafedbaefd942f3083de93edb8efda306a60da14a90c10b325411e7916e56", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "18ecafedbaefd942f3083de93edb8efda306a60da14a90c10b325411e7916e56", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "18ecafedbaefd942f3083de93edb8efda306a60da14a90c10b325411e7916e56", kill_on_drop: false }`
[INFO] [stdout] 18ecafedbaefd942f3083de93edb8efda306a60da14a90c10b325411e7916e56
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 14659c46a09b2b5ef4f98456c5a0a99a5ebbb4472edb02c5238fc7aaf0d816e1
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "14659c46a09b2b5ef4f98456c5a0a99a5ebbb4472edb02c5238fc7aaf0d816e1", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.12
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.19
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]     Checking matches v0.1.8
[INFO] [stderr]     Checking ppv-lite86 v0.2.6
[INFO] [stderr]     Checking futures-sink v0.3.5
[INFO] [stderr]     Checking futures-core v0.3.5
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]    Compiling unicode-segmentation v1.6.0
[INFO] [stderr]     Checking percent-encoding v2.1.0
[INFO] [stderr]     Checking bytes v0.5.4
[INFO] [stderr]     Checking rustc-demangle v0.1.16
[INFO] [stderr]    Compiling openssl v0.10.29
[INFO] [stderr]     Checking unicode-width v0.1.7
[INFO] [stderr]     Checking termcolor v1.1.0
[INFO] [stderr]     Checking base64 v0.11.0
[INFO] [stderr]     Checking string-tools v0.1.0
[INFO] [stderr]    Compiling backtrace-sys v0.1.37
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]    Compiling email v0.0.21
[INFO] [stderr]     Checking futures-channel v0.3.5
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking unicode-bidi v0.3.4
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking lexical-core v0.7.4
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]     Checking idna v0.2.0
[INFO] [stderr]    Compiling openssl-sys v0.9.55
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]     Checking aho-corasick v0.7.10
[INFO] [stderr]    Compiling quote v1.0.4
[INFO] [stderr]     Checking net2 v0.2.34
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking hostname v0.3.1
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking url v2.1.1
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking resolv-conf v0.6.3
[INFO] [stderr]    Compiling native-tls v0.2.4
[INFO] [stderr]     Checking backtrace v0.3.46
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking mio v0.6.22
[INFO] [stderr]     Checking regex v1.3.7
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking chrono v0.4.11
[INFO] [stderr]     Checking tokio v0.2.20
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]    Compiling pin-project-internal v0.4.13
[INFO] [stderr]    Compiling thiserror-impl v1.0.16
[INFO] [stderr]    Compiling enum-as-inner v0.3.2
[INFO] [stderr]    Compiling async-trait v0.1.30
[INFO] [stderr]     Checking thiserror v1.0.16
[INFO] [stderr]     Checking pin-project v0.4.13
[INFO] [stderr]     Checking futures-util v0.3.5
[INFO] [stderr]     Checking futures v0.3.5
[INFO] [stderr]     Checking trust-dns-proto v0.19.5
[INFO] [stderr]     Checking trust-dns-resolver v0.19.5
[INFO] [stderr]     Checking smtp-server v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `input`
[INFO] [stdout]    --> src/commands.rs:292:16
[INFO] [stdout]     |
[INFO] [stdout] 292 |     fn address(input: &str) -> IResult<&str, Address, Error> {
[INFO] [stdout]     |                ^^^^^ help: if this is intentional, prefix it with an underscore: `_input`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `command`
[INFO] [stdout]    --> src/commands.rs:297:26
[INFO] [stdout]     |
[INFO] [stdout] 297 |         let (remaining, (command, domain, end)) = tuple((tag_no_case("HELO "), domain, tag("\r\n")))(input)?;
[INFO] [stdout]     |                          ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_command`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `end`
[INFO] [stdout]    --> src/commands.rs:297:43
[INFO] [stdout]     |
[INFO] [stdout] 297 |         let (remaining, (command, domain, end)) = tuple((tag_no_case("HELO "), domain, tag("\r\n")))(input)?;
[INFO] [stdout]     |                                           ^^^ help: if this is intentional, prefix it with an underscore: `_end`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `command`
[INFO] [stdout]    --> src/commands.rs:302:26
[INFO] [stdout]     |
[INFO] [stdout] 302 |         let (remaining, (command, address, end)) = tuple((tag_no_case("HELO "), address, tag("\r\n")))(input)?;
[INFO] [stdout]     |                          ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_command`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `end`
[INFO] [stdout]    --> src/commands.rs:302:44
[INFO] [stdout]     |
[INFO] [stdout] 302 |         let (remaining, (command, address, end)) = tuple((tag_no_case("HELO "), address, tag("\r\n")))(input)?;
[INFO] [stdout]     |                                            ^^^ help: if this is intentional, prefix it with an underscore: `_end`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `input`
[INFO] [stdout]    --> src/commands.rs:181:28
[INFO] [stdout]     |
[INFO] [stdout] 181 |         fn from_error_kind(input: &str, kind: ErrorKind) -> Self {
[INFO] [stdout]     |                            ^^^^^ help: if this is intentional, prefix it with an underscore: `_input`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `input`
[INFO] [stdout]    --> src/commands.rs:185:19
[INFO] [stdout]     |
[INFO] [stdout] 185 |         fn append(input: &str, kind: ErrorKind, other: Self) -> Self {
[INFO] [stdout]     |                   ^^^^^ help: if this is intentional, prefix it with an underscore: `_input`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `kind`
[INFO] [stdout]    --> src/commands.rs:185:32
[INFO] [stdout]     |
[INFO] [stdout] 185 |         fn append(input: &str, kind: ErrorKind, other: Self) -> Self {
[INFO] [stdout]     |                                ^^^^ help: if this is intentional, prefix it with an underscore: `_kind`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `body` is never read
[INFO] [stdout]   --> src/mda.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |     let mut body: Option<MimeMessage> = None;
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `from`
[INFO] [stdout]   --> src/mda.rs:51:36
[INFO] [stdout]    |
[INFO] [stdout] 51 |                 } else if let Some(from) = &from {
[INFO] [stdout]    |                                    ^^^^ help: if this is intentional, prefix it with an underscore: `_from`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `body` is never read
[INFO] [stdout]   --> src/mda.rs:67:17
[INFO] [stdout]    |
[INFO] [stdout] 67 |                 body = None;
[INFO] [stdout]    |                 ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `body` is never read
[INFO] [stdout]   --> src/mda.rs:74:17
[INFO] [stdout]    |
[INFO] [stdout] 74 |                 body = None;
[INFO] [stdout]    |                 ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `InvalidDomain`
[INFO] [stdout]    --> src/commands.rs:175:9
[INFO] [stdout]     |
[INFO] [stdout] 175 |         InvalidDomain,
[INFO] [stdout]     |         ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `InvalidIpv4Address`
[INFO] [stdout]    --> src/commands.rs:176:9
[INFO] [stdout]     |
[INFO] [stdout] 176 |         InvalidIpv4Address,
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `domain`
[INFO] [stdout]    --> src/commands.rs:190:8
[INFO] [stdout]     |
[INFO] [stdout] 190 |     fn domain(input: &str) -> IResult<&str, &str, Error> {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `ipv4_adress`
[INFO] [stdout]    --> src/commands.rs:219:8
[INFO] [stdout]     |
[INFO] [stdout] 219 |     fn ipv4_adress(input: &str) -> IResult<&str, &str, Error> {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `address`
[INFO] [stdout]    --> src/commands.rs:292:8
[INFO] [stdout]     |
[INFO] [stdout] 292 |     fn address(input: &str) -> IResult<&str, Address, Error> {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `helo`
[INFO] [stdout]    --> src/commands.rs:296:8
[INFO] [stdout]     |
[INFO] [stdout] 296 |     fn helo(input: &str) -> IResult<&str, Command, Error> {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `ehlo`
[INFO] [stdout]    --> src/commands.rs:301:8
[INFO] [stdout]     |
[INFO] [stdout] 301 |     fn ehlo(input: &str) -> IResult<&str, Command, Error> {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `command`
[INFO] [stdout]    --> src/commands.rs:306:8
[INFO] [stdout]     |
[INFO] [stdout] 306 |     fn command(input: &str) -> IResult<&str, Command, Error> {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `Ok` should have a snake case name
[INFO] [stdout]   --> src/replies.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 11 |     pub fn Ok() -> Reply {
[INFO] [stdout]    |            ^^ help: convert the identifier to snake case (notice the capitalization): `ok`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `SystemStatus` should have a snake case name
[INFO] [stdout]   --> src/replies.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 18 |     pub fn SystemStatus() -> Reply {
[INFO] [stdout]    |            ^^^^^^^^^^^^ help: convert the identifier to snake case: `system_status`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `HelpMessage` should have a snake case name
[INFO] [stdout]   --> src/replies.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub fn HelpMessage() -> Reply {
[INFO] [stdout]    |            ^^^^^^^^^^^ help: convert the identifier to snake case: `help_message`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `ServiceReady` should have a snake case name
[INFO] [stdout]   --> src/replies.rs:32:12
[INFO] [stdout]    |
[INFO] [stdout] 32 |     pub fn ServiceReady() -> Reply {
[INFO] [stdout]    |            ^^^^^^^^^^^^ help: convert the identifier to snake case: `service_ready`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `ServiceClosingTransmissionChannel` should have a snake case name
[INFO] [stdout]   --> src/replies.rs:39:12
[INFO] [stdout]    |
[INFO] [stdout] 39 |     pub fn ServiceClosingTransmissionChannel() -> Reply {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `service_closing_transmission_channel`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `UserNotLocalHandled` should have a snake case name
[INFO] [stdout]   --> src/replies.rs:46:12
[INFO] [stdout]    |
[INFO] [stdout] 46 |     pub fn UserNotLocalHandled() -> Reply {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `user_not_local_handled`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `UserNotLocal` should have a snake case name
[INFO] [stdout]   --> src/replies.rs:53:12
[INFO] [stdout]    |
[INFO] [stdout] 53 |     pub fn UserNotLocal() -> Reply {
[INFO] [stdout]    |            ^^^^^^^^^^^^ help: convert the identifier to snake case: `user_not_local`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `CannotVerifyUser` should have a snake case name
[INFO] [stdout]   --> src/replies.rs:60:12
[INFO] [stdout]    |
[INFO] [stdout] 60 |     pub fn CannotVerifyUser() -> Reply {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `cannot_verify_user`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `StartMailInput` should have a snake case name
[INFO] [stdout]   --> src/replies.rs:67:12
[INFO] [stdout]    |
[INFO] [stdout] 67 |     pub fn StartMailInput() -> Reply {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^ help: convert the identifier to snake case: `start_mail_input`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `ServiceUnavailable` should have a snake case name
[INFO] [stdout]   --> src/replies.rs:74:12
[INFO] [stdout]    |
[INFO] [stdout] 74 |     pub fn ServiceUnavailable() -> Reply {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `service_unavailable`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `MailActionNotTaken` should have a snake case name
[INFO] [stdout]   --> src/replies.rs:81:12
[INFO] [stdout]    |
[INFO] [stdout] 81 |     pub fn MailActionNotTaken() -> Reply {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `mail_action_not_taken`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `ActionNotTaken` should have a snake case name
[INFO] [stdout]   --> src/replies.rs:88:12
[INFO] [stdout]    |
[INFO] [stdout] 88 |     pub fn ActionNotTaken() -> Reply {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^ help: convert the identifier to snake case: `action_not_taken`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `MailActionAborted` should have a snake case name
[INFO] [stdout]   --> src/replies.rs:95:12
[INFO] [stdout]    |
[INFO] [stdout] 95 |     pub fn MailActionAborted() -> Reply {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `mail_action_aborted`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `ActionAborted` should have a snake case name
[INFO] [stdout]    --> src/replies.rs:102:12
[INFO] [stdout]     |
[INFO] [stdout] 102 |     pub fn ActionAborted() -> Reply {
[INFO] [stdout]     |            ^^^^^^^^^^^^^ help: convert the identifier to snake case: `action_aborted`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `InsufficientStorage` should have a snake case name
[INFO] [stdout]    --> src/replies.rs:109:12
[INFO] [stdout]     |
[INFO] [stdout] 109 |     pub fn InsufficientStorage() -> Reply {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `insufficient_storage`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `UnableToAccomodateParameters` should have a snake case name
[INFO] [stdout]    --> src/replies.rs:116:12
[INFO] [stdout]     |
[INFO] [stdout] 116 |     pub fn UnableToAccomodateParameters() -> Reply {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `unable_to_accomodate_parameters`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `SyntaxError` should have a snake case name
[INFO] [stdout]    --> src/replies.rs:123:12
[INFO] [stdout]     |
[INFO] [stdout] 123 |     pub fn SyntaxError() -> Reply {
[INFO] [stdout]     |            ^^^^^^^^^^^ help: convert the identifier to snake case: `syntax_error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `SyntaxErrorInParametersOrArguments` should have a snake case name
[INFO] [stdout]    --> src/replies.rs:130:12
[INFO] [stdout]     |
[INFO] [stdout] 130 |     pub fn SyntaxErrorInParametersOrArguments() -> Reply {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `syntax_error_in_parameters_or_arguments`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `CommandNotImplemented` should have a snake case name
[INFO] [stdout]    --> src/replies.rs:137:12
[INFO] [stdout]     |
[INFO] [stdout] 137 |     pub fn CommandNotImplemented() -> Reply {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `command_not_implemented`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `BadSequenceOfCommands` should have a snake case name
[INFO] [stdout]    --> src/replies.rs:144:12
[INFO] [stdout]     |
[INFO] [stdout] 144 |     pub fn BadSequenceOfCommands() -> Reply {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `bad_sequence_of_commands`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `CommandParameterNotImplemented` should have a snake case name
[INFO] [stdout]    --> src/replies.rs:151:12
[INFO] [stdout]     |
[INFO] [stdout] 151 |     pub fn CommandParameterNotImplemented() -> Reply {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `command_parameter_not_implemented`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `MailboxNameError` should have a snake case name
[INFO] [stdout]    --> src/replies.rs:158:12
[INFO] [stdout]     |
[INFO] [stdout] 158 |     pub fn MailboxNameError() -> Reply {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `mailbox_name_error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `TransactionFailed` should have a snake case name
[INFO] [stdout]    --> src/replies.rs:165:12
[INFO] [stdout]     |
[INFO] [stdout] 165 |     pub fn TransactionFailed() -> Reply {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `transaction_failed`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/mta.rs:122:5
[INFO] [stdout]     |
[INFO] [stdout] 122 |     stream.read_reply()?;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/mta.rs:124:5
[INFO] [stdout]     |
[INFO] [stdout] 124 |     stream.read_reply()?;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/mta.rs:135:5
[INFO] [stdout]     |
[INFO] [stdout] 135 |     stream.read_reply()?;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/mda.rs:103:25
[INFO] [stdout]     |
[INFO] [stdout] 103 |                         transfert_mail(to, from, body.unwrap(), domain);
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `input`
[INFO] [stdout]    --> src/commands.rs:292:16
[INFO] [stdout]     |
[INFO] [stdout] 292 |     fn address(input: &str) -> IResult<&str, Address, Error> {
[INFO] [stdout]     |                ^^^^^ help: if this is intentional, prefix it with an underscore: `_input`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `command`
[INFO] [stdout]    --> src/commands.rs:297:26
[INFO] [stdout]     |
[INFO] [stdout] 297 |         let (remaining, (command, domain, end)) = tuple((tag_no_case("HELO "), domain, tag("\r\n")))(input)?;
[INFO] [stdout]     |                          ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_command`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `end`
[INFO] [stdout]    --> src/commands.rs:297:43
[INFO] [stdout]     |
[INFO] [stdout] 297 |         let (remaining, (command, domain, end)) = tuple((tag_no_case("HELO "), domain, tag("\r\n")))(input)?;
[INFO] [stdout]     |                                           ^^^ help: if this is intentional, prefix it with an underscore: `_end`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `command`
[INFO] [stdout]    --> src/commands.rs:302:26
[INFO] [stdout]     |
[INFO] [stdout] 302 |         let (remaining, (command, address, end)) = tuple((tag_no_case("HELO "), address, tag("\r\n")))(input)?;
[INFO] [stdout]     |                          ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_command`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `end`
[INFO] [stdout]    --> src/commands.rs:302:44
[INFO] [stdout]     |
[INFO] [stdout] 302 |         let (remaining, (command, address, end)) = tuple((tag_no_case("HELO "), address, tag("\r\n")))(input)?;
[INFO] [stdout]     |                                            ^^^ help: if this is intentional, prefix it with an underscore: `_end`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `input`
[INFO] [stdout]    --> src/commands.rs:181:28
[INFO] [stdout]     |
[INFO] [stdout] 181 |         fn from_error_kind(input: &str, kind: ErrorKind) -> Self {
[INFO] [stdout]     |                            ^^^^^ help: if this is intentional, prefix it with an underscore: `_input`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `input`
[INFO] [stdout]    --> src/commands.rs:185:19
[INFO] [stdout]     |
[INFO] [stdout] 185 |         fn append(input: &str, kind: ErrorKind, other: Self) -> Self {
[INFO] [stdout]     |                   ^^^^^ help: if this is intentional, prefix it with an underscore: `_input`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `kind`
[INFO] [stdout]    --> src/commands.rs:185:32
[INFO] [stdout]     |
[INFO] [stdout] 185 |         fn append(input: &str, kind: ErrorKind, other: Self) -> Self {
[INFO] [stdout]     |                                ^^^^ help: if this is intentional, prefix it with an underscore: `_kind`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `body` is never read
[INFO] [stdout]   --> src/mda.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |     let mut body: Option<MimeMessage> = None;
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `from`
[INFO] [stdout]   --> src/mda.rs:51:36
[INFO] [stdout]    |
[INFO] [stdout] 51 |                 } else if let Some(from) = &from {
[INFO] [stdout]    |                                    ^^^^ help: if this is intentional, prefix it with an underscore: `_from`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `body` is never read
[INFO] [stdout]   --> src/mda.rs:67:17
[INFO] [stdout]    |
[INFO] [stdout] 67 |                 body = None;
[INFO] [stdout]    |                 ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `body` is never read
[INFO] [stdout]   --> src/mda.rs:74:17
[INFO] [stdout]    |
[INFO] [stdout] 74 |                 body = None;
[INFO] [stdout]    |                 ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `address`
[INFO] [stdout]    --> src/commands.rs:292:8
[INFO] [stdout]     |
[INFO] [stdout] 292 |     fn address(input: &str) -> IResult<&str, Address, Error> {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 47 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `ehlo`
[INFO] [stdout]    --> src/commands.rs:301:8
[INFO] [stdout]     |
[INFO] [stdout] 301 |     fn ehlo(input: &str) -> IResult<&str, Command, Error> {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `Ok` should have a snake case name
[INFO] [stdout]   --> src/replies.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 11 |     pub fn Ok() -> Reply {
[INFO] [stdout]    |            ^^ help: convert the identifier to snake case (notice the capitalization): `ok`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `SystemStatus` should have a snake case name
[INFO] [stdout]   --> src/replies.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 18 |     pub fn SystemStatus() -> Reply {
[INFO] [stdout]    |            ^^^^^^^^^^^^ help: convert the identifier to snake case: `system_status`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `HelpMessage` should have a snake case name
[INFO] [stdout]   --> src/replies.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub fn HelpMessage() -> Reply {
[INFO] [stdout]    |            ^^^^^^^^^^^ help: convert the identifier to snake case: `help_message`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `ServiceReady` should have a snake case name
[INFO] [stdout]   --> src/replies.rs:32:12
[INFO] [stdout]    |
[INFO] [stdout] 32 |     pub fn ServiceReady() -> Reply {
[INFO] [stdout]    |            ^^^^^^^^^^^^ help: convert the identifier to snake case: `service_ready`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `ServiceClosingTransmissionChannel` should have a snake case name
[INFO] [stdout]   --> src/replies.rs:39:12
[INFO] [stdout]    |
[INFO] [stdout] 39 |     pub fn ServiceClosingTransmissionChannel() -> Reply {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `service_closing_transmission_channel`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `UserNotLocalHandled` should have a snake case name
[INFO] [stdout]   --> src/replies.rs:46:12
[INFO] [stdout]    |
[INFO] [stdout] 46 |     pub fn UserNotLocalHandled() -> Reply {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `user_not_local_handled`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `UserNotLocal` should have a snake case name
[INFO] [stdout]   --> src/replies.rs:53:12
[INFO] [stdout]    |
[INFO] [stdout] 53 |     pub fn UserNotLocal() -> Reply {
[INFO] [stdout]    |            ^^^^^^^^^^^^ help: convert the identifier to snake case: `user_not_local`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `CannotVerifyUser` should have a snake case name
[INFO] [stdout]   --> src/replies.rs:60:12
[INFO] [stdout]    |
[INFO] [stdout] 60 |     pub fn CannotVerifyUser() -> Reply {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `cannot_verify_user`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `StartMailInput` should have a snake case name
[INFO] [stdout]   --> src/replies.rs:67:12
[INFO] [stdout]    |
[INFO] [stdout] 67 |     pub fn StartMailInput() -> Reply {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^ help: convert the identifier to snake case: `start_mail_input`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `ServiceUnavailable` should have a snake case name
[INFO] [stdout]   --> src/replies.rs:74:12
[INFO] [stdout]    |
[INFO] [stdout] 74 |     pub fn ServiceUnavailable() -> Reply {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `service_unavailable`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `MailActionNotTaken` should have a snake case name
[INFO] [stdout]   --> src/replies.rs:81:12
[INFO] [stdout]    |
[INFO] [stdout] 81 |     pub fn MailActionNotTaken() -> Reply {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `mail_action_not_taken`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `ActionNotTaken` should have a snake case name
[INFO] [stdout]   --> src/replies.rs:88:12
[INFO] [stdout]    |
[INFO] [stdout] 88 |     pub fn ActionNotTaken() -> Reply {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^ help: convert the identifier to snake case: `action_not_taken`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `MailActionAborted` should have a snake case name
[INFO] [stdout]   --> src/replies.rs:95:12
[INFO] [stdout]    |
[INFO] [stdout] 95 |     pub fn MailActionAborted() -> Reply {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `mail_action_aborted`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `ActionAborted` should have a snake case name
[INFO] [stdout]    --> src/replies.rs:102:12
[INFO] [stdout]     |
[INFO] [stdout] 102 |     pub fn ActionAborted() -> Reply {
[INFO] [stdout]     |            ^^^^^^^^^^^^^ help: convert the identifier to snake case: `action_aborted`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `InsufficientStorage` should have a snake case name
[INFO] [stdout]    --> src/replies.rs:109:12
[INFO] [stdout]     |
[INFO] [stdout] 109 |     pub fn InsufficientStorage() -> Reply {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `insufficient_storage`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `UnableToAccomodateParameters` should have a snake case name
[INFO] [stdout]    --> src/replies.rs:116:12
[INFO] [stdout]     |
[INFO] [stdout] 116 |     pub fn UnableToAccomodateParameters() -> Reply {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `unable_to_accomodate_parameters`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `SyntaxError` should have a snake case name
[INFO] [stdout]    --> src/replies.rs:123:12
[INFO] [stdout]     |
[INFO] [stdout] 123 |     pub fn SyntaxError() -> Reply {
[INFO] [stdout]     |            ^^^^^^^^^^^ help: convert the identifier to snake case: `syntax_error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `SyntaxErrorInParametersOrArguments` should have a snake case name
[INFO] [stdout]    --> src/replies.rs:130:12
[INFO] [stdout]     |
[INFO] [stdout] 130 |     pub fn SyntaxErrorInParametersOrArguments() -> Reply {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `syntax_error_in_parameters_or_arguments`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `CommandNotImplemented` should have a snake case name
[INFO] [stdout]    --> src/replies.rs:137:12
[INFO] [stdout]     |
[INFO] [stdout] 137 |     pub fn CommandNotImplemented() -> Reply {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `command_not_implemented`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `BadSequenceOfCommands` should have a snake case name
[INFO] [stdout]    --> src/replies.rs:144:12
[INFO] [stdout]     |
[INFO] [stdout] 144 |     pub fn BadSequenceOfCommands() -> Reply {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `bad_sequence_of_commands`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `CommandParameterNotImplemented` should have a snake case name
[INFO] [stdout]    --> src/replies.rs:151:12
[INFO] [stdout]     |
[INFO] [stdout] 151 |     pub fn CommandParameterNotImplemented() -> Reply {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `command_parameter_not_implemented`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `MailboxNameError` should have a snake case name
[INFO] [stdout]    --> src/replies.rs:158:12
[INFO] [stdout]     |
[INFO] [stdout] 158 |     pub fn MailboxNameError() -> Reply {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `mailbox_name_error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `TransactionFailed` should have a snake case name
[INFO] [stdout]    --> src/replies.rs:165:12
[INFO] [stdout]     |
[INFO] [stdout] 165 |     pub fn TransactionFailed() -> Reply {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `transaction_failed`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/mta.rs:122:5
[INFO] [stdout]     |
[INFO] [stdout] 122 |     stream.read_reply()?;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/mta.rs:124:5
[INFO] [stdout]     |
[INFO] [stdout] 124 |     stream.read_reply()?;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/mta.rs:135:5
[INFO] [stdout]     |
[INFO] [stdout] 135 |     stream.read_reply()?;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/mda.rs:103:25
[INFO] [stdout]     |
[INFO] [stdout] 103 |                         transfert_mail(to, from, body.unwrap(), domain);
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 41 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 26s
[INFO] running `Command { std: "docker" "inspect" "14659c46a09b2b5ef4f98456c5a0a99a5ebbb4472edb02c5238fc7aaf0d816e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "14659c46a09b2b5ef4f98456c5a0a99a5ebbb4472edb02c5238fc7aaf0d816e1", kill_on_drop: false }`
[INFO] [stdout] 14659c46a09b2b5ef4f98456c5a0a99a5ebbb4472edb02c5238fc7aaf0d816e1
