[INFO] cloning repository https://github.com/OLUWAMUYIWA/redis-client
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/OLUWAMUYIWA/redis-client" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FOLUWAMUYIWA%2Fredis-client", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FOLUWAMUYIWA%2Fredis-client'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8f8c9f15d21dd486444135dcc65b03242a96e14c
[INFO] checking OLUWAMUYIWA/redis-client against 1.95.0 for pr-155915
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FOLUWAMUYIWA%2Fredis-client" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/OLUWAMUYIWA/redis-client
[INFO] finished tweaking git repo https://github.com/OLUWAMUYIWA/redis-client
[INFO] tweaked toml for git repo https://github.com/OLUWAMUYIWA/redis-client written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/OLUWAMUYIWA/redis-client 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 git repo https://github.com/OLUWAMUYIWA/redis-client 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 }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 04ae015ceb915b30a9b5ec9341364f09e763d2626363178e76c3686c23a2b30a
[INFO] running `Command { std: "docker" "start" "-a" "04ae015ceb915b30a9b5ec9341364f09e763d2626363178e76c3686c23a2b30a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "04ae015ceb915b30a9b5ec9341364f09e763d2626363178e76c3686c23a2b30a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "04ae015ceb915b30a9b5ec9341364f09e763d2626363178e76c3686c23a2b30a", kill_on_drop: false }`
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[INFO] [stdout] warning: unused import: `ops::Deref`
[INFO] [stdout]  --> src/resp.rs:1:23
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{fmt::Write, ops::Deref};
[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: `Bytes`
[INFO] [stdout]  --> src/resp.rs:4:21
[INFO] [stdout]   |
[INFO] [stdout] 4 | use bytes::{BufMut, Bytes, BytesMut};
[INFO] [stdout]   |                     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ops::Deref`
[INFO] [stdout]  --> src/resp.rs:1:23
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{fmt::Write, ops::Deref};
[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: `Bytes`
[INFO] [stdout]  --> src/resp.rs:4:21
[INFO] [stdout]   |
[INFO] [stdout] 4 | use bytes::{BufMut, Bytes, BytesMut};
[INFO] [stdout]   |                     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/resp.rs:27:30
[INFO] [stdout]    |
[INFO] [stdout] 27 |             Self::BulkString(mut string) => {
[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/resp.rs:27:30
[INFO] [stdout]    |
[INFO] [stdout] 27 |             Self::BulkString(mut string) => {
[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: unused variable: `err`
[INFO] [stdout]   --> src/client.rs:53:10
[INFO] [stdout]    |
[INFO] [stdout] 53 |     fn from(err: IoError) -> Self {
[INFO] [stdout]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]   --> src/client.rs:59:10
[INFO] [stdout]    |
[INFO] [stdout] 59 |     fn from(e: Error) -> Self {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Resp` is never used
[INFO] [stdout]  --> src/resp.rs:7:17
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub(crate) enum Resp {
[INFO] [stdout]   |                 ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `serialize` is never used
[INFO] [stdout]   --> src/resp.rs:16:19
[INFO] [stdout]    |
[INFO] [stdout] 15 | impl Resp {
[INFO] [stdout]    | --------- method in this implementation
[INFO] [stdout] 16 |     pub(crate) fn serialize(self, b: &mut BytesMut) {
[INFO] [stdout]    |                   ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse_resp` is never used
[INFO] [stdout]   --> src/resp.rs:55:15
[INFO] [stdout]    |
[INFO] [stdout] 55 | pub(crate) fn parse_resp(buf: &[u8]) -> Result<&str, client::Error> {
[INFO] [stdout]    |               ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Client` is never constructed
[INFO] [stdout]  --> src/client.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct Client {
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `set`, and `ping` are never used
[INFO] [stdout]   --> src/client.rs:13:15
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl Client {
[INFO] [stdout]    | ----------- associated items in this implementation
[INFO] [stdout] 12 |
[INFO] [stdout] 13 |     pub async fn new<A: ToSocketAddrs>(addr: A) -> Result<Self, IoError> {
[INFO] [stdout]    |                  ^^^
[INFO] [stdout] ...
[INFO] [stdout] 20 |     pub async fn set(&mut self, key: String, val: String) -> Result<(), Error>{
[INFO] [stdout]    |                  ^^^
[INFO] [stdout] ...
[INFO] [stdout] 37 |     pub async fn ping(&mut self) -> Result<(), IoError> {
[INFO] [stdout]    |                  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/resp.rs:37:17
[INFO] [stdout]    |
[INFO] [stdout] 37 |                 b.write_str(string.as_str());
[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] 37 |                 let _ = b.write_str(string.as_str());
[INFO] [stdout]    |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]   --> src/client.rs:53:10
[INFO] [stdout]    |
[INFO] [stdout] 53 |     fn from(err: IoError) -> Self {
[INFO] [stdout]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]   --> src/client.rs:59:10
[INFO] [stdout]    |
[INFO] [stdout] 59 |     fn from(e: Error) -> Self {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Resp` is never used
[INFO] [stdout]  --> src/resp.rs:7:17
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub(crate) enum Resp {
[INFO] [stdout]   |                 ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `serialize` is never used
[INFO] [stdout]   --> src/resp.rs:16:19
[INFO] [stdout]    |
[INFO] [stdout] 15 | impl Resp {
[INFO] [stdout]    | --------- method in this implementation
[INFO] [stdout] 16 |     pub(crate) fn serialize(self, b: &mut BytesMut) {
[INFO] [stdout]    |                   ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse_resp` is never used
[INFO] [stdout]   --> src/resp.rs:55:15
[INFO] [stdout]    |
[INFO] [stdout] 55 | pub(crate) fn parse_resp(buf: &[u8]) -> Result<&str, client::Error> {
[INFO] [stdout]    |               ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Client` is never constructed
[INFO] [stdout]  --> src/client.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct Client {
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `set`, and `ping` are never used
[INFO] [stdout]   --> src/client.rs:13:15
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl Client {
[INFO] [stdout]    | ----------- associated items in this implementation
[INFO] [stdout] 12 |
[INFO] [stdout] 13 |     pub async fn new<A: ToSocketAddrs>(addr: A) -> Result<Self, IoError> {
[INFO] [stdout]    |                  ^^^
[INFO] [stdout] ...
[INFO] [stdout] 20 |     pub async fn set(&mut self, key: String, val: String) -> Result<(), Error>{
[INFO] [stdout]    |                  ^^^
[INFO] [stdout] ...
[INFO] [stdout] 37 |     pub async fn ping(&mut self) -> Result<(), IoError> {
[INFO] [stdout]    |                  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/resp.rs:37:17
[INFO] [stdout]    |
[INFO] [stdout] 37 |                 b.write_str(string.as_str());
[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] 37 |                 let _ = b.write_str(string.as_str());
[INFO] [stdout]    |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `structopt::StructOpt`
[INFO] [stdout]  --> src/bin/cli.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use structopt::StructOpt;
[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: `prelude::*`
[INFO] [stdout]  --> src/main.rs:3:28
[INFO] [stdout]   |
[INFO] [stdout] 3 | use async_std::{io::{self, prelude::*}};
[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: `ops::Deref`
[INFO] [stdout]  --> src/resp.rs:1:23
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{fmt::Write, ops::Deref};
[INFO] [stdout]   |                       ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Bytes`
[INFO] [stdout]  --> src/resp.rs:4:21
[INFO] [stdout]   |
[INFO] [stdout] 4 | use bytes::{BufMut, Bytes, BytesMut};
[INFO] [stdout]   |                     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `structopt::StructOpt`
[INFO] [stdout]  --> src/bin/cli.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use structopt::StructOpt;
[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: `err`
[INFO] [stdout]   --> src/client.rs:53:10
[INFO] [stdout]    |
[INFO] [stdout] 53 |     fn from(err: IoError) -> Self {
[INFO] [stdout]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]   --> src/client.rs:59:10
[INFO] [stdout]    |
[INFO] [stdout] 59 |     fn from(e: Error) -> Self {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/resp.rs:27:30
[INFO] [stdout]    |
[INFO] [stdout] 27 |             Self::BulkString(mut string) => {
[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: variants `SimpleString`, `Error`, and `Integer` are never constructed
[INFO] [stdout]   --> src/resp.rs:8:5
[INFO] [stdout]    |
[INFO] [stdout]  7 | pub(crate) enum Resp {
[INFO] [stdout]    |                 ---- variants in this enum
[INFO] [stdout]  8 |     SimpleString(String),
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]  9 |     Error((String, String)),
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 10 |     Integer(i64),
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `prelude::*`
[INFO] [stdout]  --> src/main.rs:3:28
[INFO] [stdout]   |
[INFO] [stdout] 3 | use async_std::{io::{self, prelude::*}};
[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: `ops::Deref`
[INFO] [stdout]  --> src/resp.rs:1:23
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{fmt::Write, ops::Deref};
[INFO] [stdout]   |                       ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Bytes`
[INFO] [stdout]  --> src/resp.rs:4:21
[INFO] [stdout]   |
[INFO] [stdout] 4 | use bytes::{BufMut, Bytes, BytesMut};
[INFO] [stdout]   |                     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/resp.rs:37:17
[INFO] [stdout]    |
[INFO] [stdout] 37 |                 b.write_str(string.as_str());
[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] 37 |                 let _ = b.write_str(string.as_str());
[INFO] [stdout]    |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]   --> src/client.rs:53:10
[INFO] [stdout]    |
[INFO] [stdout] 53 |     fn from(err: IoError) -> Self {
[INFO] [stdout]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]   --> src/client.rs:59:10
[INFO] [stdout]    |
[INFO] [stdout] 59 |     fn from(e: Error) -> Self {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/resp.rs:27:30
[INFO] [stdout]    |
[INFO] [stdout] 27 |             Self::BulkString(mut string) => {
[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: variants `SimpleString`, `Error`, and `Integer` are never constructed
[INFO] [stdout]   --> src/resp.rs:8:5
[INFO] [stdout]    |
[INFO] [stdout]  7 | pub(crate) enum Resp {
[INFO] [stdout]    |                 ---- variants in this enum
[INFO] [stdout]  8 |     SimpleString(String),
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]  9 |     Error((String, String)),
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 10 |     Integer(i64),
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/resp.rs:37:17
[INFO] [stdout]    |
[INFO] [stdout] 37 |                 b.write_str(string.as_str());
[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] 37 |                 let _ = b.write_str(string.as_str());
[INFO] [stdout]    |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 12.24s
[INFO] running `Command { std: "docker" "inspect" "e388b83ce79348fda361d2a060f8a11fcccf1a5246c40b208c6d735541710e2e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e388b83ce79348fda361d2a060f8a11fcccf1a5246c40b208c6d735541710e2e", kill_on_drop: false }`
[INFO] [stdout] e388b83ce79348fda361d2a060f8a11fcccf1a5246c40b208c6d735541710e2e
