[INFO] cloning repository https://github.com/code-beginner-98/contact-form-handler
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/code-beginner-98/contact-form-handler" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcode-beginner-98%2Fcontact-form-handler", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcode-beginner-98%2Fcontact-form-handler'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0683aafca9d42f2a87285c3856a2183294cef258
[INFO] checking code-beginner-98/contact-form-handler against try#f3d95de532264a1215023baa665c0028aecf74b1 for pr-148477
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcode-beginner-98%2Fcontact-form-handler" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/code-beginner-98/contact-form-handler
[INFO] finished tweaking git repo https://github.com/code-beginner-98/contact-form-handler
[INFO] tweaked toml for git repo https://github.com/code-beginner-98/contact-form-handler written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/code-beginner-98/contact-form-handler on toolchain f3d95de532264a1215023baa665c0028aecf74b1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f3d95de532264a1215023baa665c0028aecf74b1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/code-beginner-98/contact-form-handler 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" "+f3d95de532264a1215023baa665c0028aecf74b1" "fetch" "--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-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+f3d95de532264a1215023baa665c0028aecf74b1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fd6410f01fe6b83008e98446e96ea0e583c733944799088bda1b3b5cac3b067b
[INFO] running `Command { std: "docker" "start" "-a" "fd6410f01fe6b83008e98446e96ea0e583c733944799088bda1b3b5cac3b067b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fd6410f01fe6b83008e98446e96ea0e583c733944799088bda1b3b5cac3b067b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd6410f01fe6b83008e98446e96ea0e583c733944799088bda1b3b5cac3b067b", kill_on_drop: false }`
[INFO] [stdout] fd6410f01fe6b83008e98446e96ea0e583c733944799088bda1b3b5cac3b067b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+f3d95de532264a1215023baa665c0028aecf74b1" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dae7f6bdf69e57410cf4c5d764368faa8b53bf751de3541ba82305a79a40367c
[INFO] running `Command { std: "docker" "start" "-a" "dae7f6bdf69e57410cf4c5d764368faa8b53bf751de3541ba82305a79a40367c", kill_on_drop: false }`
[INFO] [stderr]     Checking form-handler v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `AuthenticationMethod`, `SmtpError`, and `SmtpMessage`
[INFO] [stdout]   --> src/main.rs:10:27
[INFO] [stdout]    |
[INFO] [stdout] 10 |     error::error::{Error, SmtpError},
[INFO] [stdout]    |                           ^^^^^^^^^
[INFO] [stdout] 11 |     smtp::smtp::{SmtpClient, SmtpMessage, AuthenticationMethod}
[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 imports: `AuthenticationMethod`, `SmtpError`, and `SmtpMessage`
[INFO] [stdout]   --> src/main.rs:10:27
[INFO] [stdout]    |
[INFO] [stdout] 10 |     error::error::{Error, SmtpError},
[INFO] [stdout]    |                           ^^^^^^^^^
[INFO] [stdout] 11 |     smtp::smtp::{SmtpClient, SmtpMessage, AuthenticationMethod}
[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 variable: `msg`
[INFO] [stdout]    --> src/smtp.rs:117:38
[INFO] [stdout]     |
[INFO] [stdout] 117 |         pub fn send_email(&mut self, msg: SmtpMessage) -> Result<(), SmtpError> {
[INFO] [stdout]     |                                      ^^^ help: if this is intentional, prefix it with an underscore: `_msg`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `msg`
[INFO] [stdout]    --> src/smtp.rs:117:38
[INFO] [stdout]     |
[INFO] [stdout] 117 |         pub fn send_email(&mut self, msg: SmtpMessage) -> Result<(), SmtpError> {
[INFO] [stdout]     |                                      ^^^ help: if this is intentional, prefix it with an underscore: `_msg`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `contact_data`
[INFO] [stdout]   --> src/main.rs:91:28
[INFO] [stdout]    |
[INFO] [stdout] 91 |                     let Ok(contact_data) = split_body_from(msg) else {
[INFO] [stdout]    |                            ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_contact_data`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `smtp`
[INFO] [stdout]   --> src/main.rs:99:25
[INFO] [stdout]    |
[INFO] [stdout] 99 |                     let smtp = SmtpClient::bind_to_server_addr(MAIL_SERVER);
[INFO] [stdout]    |                         ^^^^ help: if this is intentional, prefix it with an underscore: `_smtp`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `contact_data`
[INFO] [stdout]   --> src/main.rs:91:28
[INFO] [stdout]    |
[INFO] [stdout] 91 |                     let Ok(contact_data) = split_body_from(msg) else {
[INFO] [stdout]    |                            ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_contact_data`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `smtp`
[INFO] [stdout]   --> src/main.rs:99:25
[INFO] [stdout]    |
[INFO] [stdout] 99 |                     let smtp = SmtpClient::bind_to_server_addr(MAIL_SERVER);
[INFO] [stdout]    |                         ^^^^ help: if this is intentional, prefix it with an underscore: `_smtp`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `start_line` is never read
[INFO] [stdout]    --> src/main.rs:200:5
[INFO] [stdout]     |
[INFO] [stdout] 199 | struct HttpHeader {
[INFO] [stdout]     |        ---------- field in this struct
[INFO] [stdout] 200 |     start_line: Vec<String>,
[INFO] [stdout]     |     ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `from_mail`, `surname`, `last_name`, `subject`, and `content` are never read
[INFO] [stdout]    --> src/main.rs:205:5
[INFO] [stdout]     |
[INFO] [stdout] 204 | struct HttpMessage {
[INFO] [stdout]     |        ----------- fields in this struct
[INFO] [stdout] 205 |     from_mail: String,
[INFO] [stdout]     |     ^^^^^^^^^
[INFO] [stdout] 206 |     surname: String,
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout] 207 |     last_name: String,
[INFO] [stdout]     |     ^^^^^^^^^
[INFO] [stdout] 208 |     subject: String,
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout] 209 |     content: String,
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `stream` and `tls` are never read
[INFO] [stdout]   --> src/smtp.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout]  9 |     pub struct SmtpClient {
[INFO] [stdout]    |                ---------- fields in this struct
[INFO] [stdout] 10 |         stream: TcpStream,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout] 11 |         tls: AuthenticationMethod,
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple methods are never used
[INFO] [stdout]    --> src/smtp.rs:41:16
[INFO] [stdout]     |
[INFO] [stdout]  14 |     impl SmtpClient {
[INFO] [stdout]     |     --------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout]  41 |         pub fn handshake(&mut self) -> Result<(), SmtpError> {
[INFO] [stdout]     |                ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  50 |         pub fn write_line<S>(&mut self, msg: S) -> Result<(), SmtpError>
[INFO] [stdout]     |                ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  62 |         pub fn expect_line<S>(&mut self, expected: S) -> Result<[u8; 512], SmtpError>
[INFO] [stdout]     |                ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  83 |         pub fn handshake_tls(&mut self) -> Result<(), SmtpError> {
[INFO] [stdout]     |                ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 101 |         pub fn tls_auth(&self) -> Result<(), SmtpError> {
[INFO] [stdout]     |                ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 109 |         pub fn send_msg(&self) -> Result<(), SmtpError> {
[INFO] [stdout]     |                ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 117 |         pub fn send_email(&mut self, msg: SmtpMessage) -> Result<(), SmtpError> {
[INFO] [stdout]     |                ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `NoTls` is never constructed
[INFO] [stdout]    --> src/smtp.rs:132:9
[INFO] [stdout]     |
[INFO] [stdout] 130 |     pub enum AuthenticationMethod {
[INFO] [stdout]     |              -------------------- variant in this enum
[INFO] [stdout] 131 |         Tls,
[INFO] [stdout] 132 |         NoTls,
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `SmtpMessage` is never constructed
[INFO] [stdout]    --> src/smtp.rs:135:16
[INFO] [stdout]     |
[INFO] [stdout] 135 |     pub struct SmtpMessage {
[INFO] [stdout]     |                ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> src/error.rs:7:18
[INFO] [stdout]   |
[INFO] [stdout] 7 |         TcpError(String),
[INFO] [stdout]   |         -------- ^^^^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         field in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `SmtpError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]   |
[INFO] [stdout] 7 -         TcpError(String),
[INFO] [stdout] 7 +         TcpError(()),
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> src/error.rs:8:17
[INFO] [stdout]   |
[INFO] [stdout] 8 |         IoError(String),
[INFO] [stdout]   |         ------- ^^^^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         field in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `SmtpError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]   |
[INFO] [stdout] 8 -         IoError(String),
[INFO] [stdout] 8 +         IoError(()),
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `SmtpError`, `TcpWriteError`, and `TcpReadError` are never constructed
[INFO] [stdout]   --> src/error.rs:6:9
[INFO] [stdout]    |
[INFO] [stdout]  5 |     pub enum SmtpError {
[INFO] [stdout]    |              --------- variants in this enum
[INFO] [stdout]  6 |         SmtpError(String),
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  9 |         TcpWriteError(String),
[INFO] [stdout]    |         ^^^^^^^^^^^^^
[INFO] [stdout] 10 |         TcpReadError(String),
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `SmtpError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `HttpError` and `SmtpError` are never constructed
[INFO] [stdout]   --> src/error.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub enum Error {
[INFO] [stdout]    |              ----- variants in this enum
[INFO] [stdout] 27 |         HttpError(String),
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 30 |         SmtpError(String),
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Error` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `start_line` is never read
[INFO] [stdout]    --> src/main.rs:200:5
[INFO] [stdout]     |
[INFO] [stdout] 199 | struct HttpHeader {
[INFO] [stdout]     |        ---------- field in this struct
[INFO] [stdout] 200 |     start_line: Vec<String>,
[INFO] [stdout]     |     ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `from_mail`, `surname`, `last_name`, `subject`, and `content` are never read
[INFO] [stdout]    --> src/main.rs:205:5
[INFO] [stdout]     |
[INFO] [stdout] 204 | struct HttpMessage {
[INFO] [stdout]     |        ----------- fields in this struct
[INFO] [stdout] 205 |     from_mail: String,
[INFO] [stdout]     |     ^^^^^^^^^
[INFO] [stdout] 206 |     surname: String,
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout] 207 |     last_name: String,
[INFO] [stdout]     |     ^^^^^^^^^
[INFO] [stdout] 208 |     subject: String,
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout] 209 |     content: String,
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `stream` and `tls` are never read
[INFO] [stdout]   --> src/smtp.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout]  9 |     pub struct SmtpClient {
[INFO] [stdout]    |                ---------- fields in this struct
[INFO] [stdout] 10 |         stream: TcpStream,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout] 11 |         tls: AuthenticationMethod,
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple methods are never used
[INFO] [stdout]    --> src/smtp.rs:41:16
[INFO] [stdout]     |
[INFO] [stdout]  14 |     impl SmtpClient {
[INFO] [stdout]     |     --------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout]  41 |         pub fn handshake(&mut self) -> Result<(), SmtpError> {
[INFO] [stdout]     |                ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  50 |         pub fn write_line<S>(&mut self, msg: S) -> Result<(), SmtpError>
[INFO] [stdout]     |                ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  62 |         pub fn expect_line<S>(&mut self, expected: S) -> Result<[u8; 512], SmtpError>
[INFO] [stdout]     |                ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  83 |         pub fn handshake_tls(&mut self) -> Result<(), SmtpError> {
[INFO] [stdout]     |                ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 101 |         pub fn tls_auth(&self) -> Result<(), SmtpError> {
[INFO] [stdout]     |                ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 109 |         pub fn send_msg(&self) -> Result<(), SmtpError> {
[INFO] [stdout]     |                ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 117 |         pub fn send_email(&mut self, msg: SmtpMessage) -> Result<(), SmtpError> {
[INFO] [stdout]     |                ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `NoTls` is never constructed
[INFO] [stdout]    --> src/smtp.rs:132:9
[INFO] [stdout]     |
[INFO] [stdout] 130 |     pub enum AuthenticationMethod {
[INFO] [stdout]     |              -------------------- variant in this enum
[INFO] [stdout] 131 |         Tls,
[INFO] [stdout] 132 |         NoTls,
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `SmtpMessage` is never constructed
[INFO] [stdout]    --> src/smtp.rs:135:16
[INFO] [stdout]     |
[INFO] [stdout] 135 |     pub struct SmtpMessage {
[INFO] [stdout]     |                ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> src/error.rs:7:18
[INFO] [stdout]   |
[INFO] [stdout] 7 |         TcpError(String),
[INFO] [stdout]   |         -------- ^^^^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         field in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `SmtpError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]   |
[INFO] [stdout] 7 -         TcpError(String),
[INFO] [stdout] 7 +         TcpError(()),
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> src/error.rs:8:17
[INFO] [stdout]   |
[INFO] [stdout] 8 |         IoError(String),
[INFO] [stdout]   |         ------- ^^^^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         field in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `SmtpError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]   |
[INFO] [stdout] 8 -         IoError(String),
[INFO] [stdout] 8 +         IoError(()),
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `SmtpError`, `TcpWriteError`, and `TcpReadError` are never constructed
[INFO] [stdout]   --> src/error.rs:6:9
[INFO] [stdout]    |
[INFO] [stdout]  5 |     pub enum SmtpError {
[INFO] [stdout]    |              --------- variants in this enum
[INFO] [stdout]  6 |         SmtpError(String),
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  9 |         TcpWriteError(String),
[INFO] [stdout]    |         ^^^^^^^^^^^^^
[INFO] [stdout] 10 |         TcpReadError(String),
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `SmtpError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `HttpError` and `SmtpError` are never constructed
[INFO] [stdout]   --> src/error.rs:27:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub enum Error {
[INFO] [stdout]    |              ----- variants in this enum
[INFO] [stdout] 27 |         HttpError(String),
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 30 |         SmtpError(String),
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Error` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/smtp.rs:24:13
[INFO] [stdout]    |
[INFO] [stdout] 24 |             stream.read(&mut buf);
[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] 24 |             let _ = stream.read(&mut buf);
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/smtp.rs:69:13
[INFO] [stdout]    |
[INFO] [stdout] 69 |             self.stream.read(&mut buf);
[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] 69 |             let _ = self.stream.read(&mut buf);
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/smtp.rs:119:17
[INFO] [stdout]     |
[INFO] [stdout] 119 |                 self.handshake_tls();
[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] 119 |                 let _ = self.handshake_tls();
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/smtp.rs:24:13
[INFO] [stdout]    |
[INFO] [stdout] 24 |             stream.read(&mut buf);
[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] 24 |             let _ = stream.read(&mut buf);
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/smtp.rs:69:13
[INFO] [stdout]    |
[INFO] [stdout] 69 |             self.stream.read(&mut buf);
[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] 69 |             let _ = self.stream.read(&mut buf);
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/smtp.rs:119:17
[INFO] [stdout]     |
[INFO] [stdout] 119 |                 self.handshake_tls();
[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] 119 |                 let _ = self.handshake_tls();
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.13s
[INFO] running `Command { std: "docker" "inspect" "dae7f6bdf69e57410cf4c5d764368faa8b53bf751de3541ba82305a79a40367c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dae7f6bdf69e57410cf4c5d764368faa8b53bf751de3541ba82305a79a40367c", kill_on_drop: false }`
[INFO] [stdout] dae7f6bdf69e57410cf4c5d764368faa8b53bf751de3541ba82305a79a40367c
