[INFO] cloning repository https://github.com/ukaushik-ebay/http-server-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ukaushik-ebay/http-server-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fukaushik-ebay%2Fhttp-server-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fukaushik-ebay%2Fhttp-server-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] cc3efc3ac27753506e50172be16104b56a3ce138
[INFO] checking ukaushik-ebay/http-server-rust against try#b4c55082edd8dec08ce8af276d7054d9c4db20c4 for pr-147984
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fukaushik-ebay%2Fhttp-server-rust" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/ukaushik-ebay/http-server-rust
[INFO] finished tweaking git repo https://github.com/ukaushik-ebay/http-server-rust
[INFO] tweaked toml for git repo https://github.com/ukaushik-ebay/http-server-rust written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ukaushik-ebay/http-server-rust on toolchain b4c55082edd8dec08ce8af276d7054d9c4db20c4
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b4c55082edd8dec08ce8af276d7054d9c4db20c4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/ukaushik-ebay/http-server-rust 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" "+b4c55082edd8dec08ce8af276d7054d9c4db20c4" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded flate2 v1.0.31
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b4c55082edd8dec08ce8af276d7054d9c4db20c4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 28a3200b5b59b3115ed276eee846386ebd3a57f4443f38a6851396f8b41663b6
[INFO] running `Command { std: "docker" "start" "-a" "28a3200b5b59b3115ed276eee846386ebd3a57f4443f38a6851396f8b41663b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "28a3200b5b59b3115ed276eee846386ebd3a57f4443f38a6851396f8b41663b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "28a3200b5b59b3115ed276eee846386ebd3a57f4443f38a6851396f8b41663b6", kill_on_drop: false }`
[INFO] [stdout] 28a3200b5b59b3115ed276eee846386ebd3a57f4443f38a6851396f8b41663b6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b4c55082edd8dec08ce8af276d7054d9c4db20c4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 678e02e5239e63c794c153e7c0de915225564363efe866c82305a15a33fdbc71
[INFO] running `Command { std: "docker" "start" "-a" "678e02e5239e63c794c153e7c0de915225564363efe866c82305a15a33fdbc71", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]     Checking miniz_oxide v0.7.1
[INFO] [stderr]     Checking flate2 v1.0.31
[INFO] [stderr]     Checking nom v7.1.3
[INFO] [stderr]     Checking http-server-starter-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Args`, `BufRead`, `BufReader`, `Read`, `Write`, `net::TcpListener`, and `thread`
[INFO] [stdout]  --> src/main.rs:3:17
[INFO] [stdout]   |
[INFO] [stdout] 3 |     env::{self, Args},
[INFO] [stdout]   |                 ^^^^
[INFO] [stdout] 4 |     io::{BufRead, BufReader, Read, Write},
[INFO] [stdout]   |          ^^^^^^^  ^^^^^^^^^  ^^^^  ^^^^^
[INFO] [stdout] 5 |     net::TcpListener,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 6 |     thread,
[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: `vec`
[INFO] [stdout]  --> src/concurrent.rs:2:22
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::{io::Write, vec};
[INFO] [stdout]   |                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Read`
[INFO] [stdout]  --> src/multithreaded.rs:2:30
[INFO] [stdout]   |
[INFO] [stdout] 2 |     io::{BufRead, BufReader, Read, Write},
[INFO] [stdout]   |                              ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Args`, `BufRead`, `BufReader`, `Read`, `Write`, `net::TcpListener`, and `thread`
[INFO] [stdout]  --> src/main.rs:3:17
[INFO] [stdout]   |
[INFO] [stdout] 3 |     env::{self, Args},
[INFO] [stdout]   |                 ^^^^
[INFO] [stdout] 4 |     io::{BufRead, BufReader, Read, Write},
[INFO] [stdout]   |          ^^^^^^^  ^^^^^^^^^  ^^^^  ^^^^^
[INFO] [stdout] 5 |     net::TcpListener,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 6 |     thread,
[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: `vec`
[INFO] [stdout]  --> src/concurrent.rs:2:22
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::{io::Write, vec};
[INFO] [stdout]   |                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Read`
[INFO] [stdout]  --> src/multithreaded.rs:2:30
[INFO] [stdout]   |
[INFO] [stdout] 2 |     io::{BufRead, BufReader, Read, Write},
[INFO] [stdout]   |                              ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `AsyncBufReadExt`
[INFO] [stdout]  --> src/concurrent.rs:8:10
[INFO] [stdout]   |
[INFO] [stdout] 8 |     io::{AsyncBufReadExt, AsyncReadExt, AsyncWriteExt, BufReader},
[INFO] [stdout]   |          ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]    --> src/concurrent.rs:103:32
[INFO] [stdout]     |
[INFO] [stdout] 103 | ...                   Ok(c) => {
[INFO] [stdout]     |                          ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `AsyncBufReadExt`
[INFO] [stdout]  --> src/concurrent.rs:8:10
[INFO] [stdout]   |
[INFO] [stdout] 8 |     io::{AsyncBufReadExt, AsyncReadExt, AsyncWriteExt, BufReader},
[INFO] [stdout]   |          ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]    --> src/concurrent.rs:103:32
[INFO] [stdout]     |
[INFO] [stdout] 103 | ...                   Ok(c) => {
[INFO] [stdout]     |                          ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `multi_server` is never used
[INFO] [stdout]  --> src/multithreaded.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn multi_server() {
[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 `multi_server` is never used
[INFO] [stdout]  --> src/multithreaded.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn multi_server() {
[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/concurrent.rs:48:25
[INFO] [stdout]    |
[INFO] [stdout] 48 |                         stream.write_all(b"HTTP/1.1 200 OK\r\n\r\n").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] 48 |                         let _ = stream.write_all(b"HTTP/1.1 200 OK\r\n\r\n").await;
[INFO] [stdout]    |                         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/concurrent.rs:52:25
[INFO] [stdout]    |
[INFO] [stdout] 52 |                         encoder.write_all(echo_val.as_bytes());
[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] 52 |                         let _ = encoder.write_all(echo_val.as_bytes());
[INFO] [stdout]    |                         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/concurrent.rs:61:29
[INFO] [stdout]    |
[INFO] [stdout] 61 | ...                   stream.write_all(&res_body_vec).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] 61 |                             let _ = stream.write_all(&res_body_vec).await;
[INFO] [stdout]    |                             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/concurrent.rs:64:29
[INFO] [stdout]    |
[INFO] [stdout] 64 | ...                   stream.write_all(request_body.as_bytes()).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] 64 |                             let _ = stream.write_all(request_body.as_bytes()).await;
[INFO] [stdout]    |                             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/concurrent.rs:94:25
[INFO] [stdout]    |
[INFO] [stdout] 94 |                         stream.write_all(b"HTTP/1.1 404 Not Found\r\n\r\n").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] 94 |                         let _ = stream.write_all(b"HTTP/1.1 404 Not Found\r\n\r\n").await;
[INFO] [stdout]    |                         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/concurrent.rs:116:25
[INFO] [stdout]     |
[INFO] [stdout] 116 |                         stream.write_all(b"HTTP/1.1 404 Not Found\r\n\r\n").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] 116 |                         let _ = stream.write_all(b"HTTP/1.1 404 Not Found\r\n\r\n").await;
[INFO] [stdout]     |                         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/concurrent.rs:120:21
[INFO] [stdout]     |
[INFO] [stdout] 120 |                     stream.write_all(b"HTTP/1.1 404 Not Found\r\n\r\n").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] 120 |                     let _ = stream.write_all(b"HTTP/1.1 404 Not Found\r\n\r\n").await;
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/concurrent.rs:48:25
[INFO] [stdout]    |
[INFO] [stdout] 48 |                         stream.write_all(b"HTTP/1.1 200 OK\r\n\r\n").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] 48 |                         let _ = stream.write_all(b"HTTP/1.1 200 OK\r\n\r\n").await;
[INFO] [stdout]    |                         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/concurrent.rs:52:25
[INFO] [stdout]    |
[INFO] [stdout] 52 |                         encoder.write_all(echo_val.as_bytes());
[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] 52 |                         let _ = encoder.write_all(echo_val.as_bytes());
[INFO] [stdout]    |                         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/concurrent.rs:61:29
[INFO] [stdout]    |
[INFO] [stdout] 61 | ...                   stream.write_all(&res_body_vec).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] 61 |                             let _ = stream.write_all(&res_body_vec).await;
[INFO] [stdout]    |                             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/concurrent.rs:64:29
[INFO] [stdout]    |
[INFO] [stdout] 64 | ...                   stream.write_all(request_body.as_bytes()).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] 64 |                             let _ = stream.write_all(request_body.as_bytes()).await;
[INFO] [stdout]    |                             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/concurrent.rs:94:25
[INFO] [stdout]    |
[INFO] [stdout] 94 |                         stream.write_all(b"HTTP/1.1 404 Not Found\r\n\r\n").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] 94 |                         let _ = stream.write_all(b"HTTP/1.1 404 Not Found\r\n\r\n").await;
[INFO] [stdout]    |                         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/concurrent.rs:116:25
[INFO] [stdout]     |
[INFO] [stdout] 116 |                         stream.write_all(b"HTTP/1.1 404 Not Found\r\n\r\n").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] 116 |                         let _ = stream.write_all(b"HTTP/1.1 404 Not Found\r\n\r\n").await;
[INFO] [stdout]     |                         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/concurrent.rs:120:21
[INFO] [stdout]     |
[INFO] [stdout] 120 |                     stream.write_all(b"HTTP/1.1 404 Not Found\r\n\r\n").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] 120 |                     let _ = stream.write_all(b"HTTP/1.1 404 Not Found\r\n\r\n").await;
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.14s
[INFO] running `Command { std: "docker" "inspect" "678e02e5239e63c794c153e7c0de915225564363efe866c82305a15a33fdbc71", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "678e02e5239e63c794c153e7c0de915225564363efe866c82305a15a33fdbc71", kill_on_drop: false }`
[INFO] [stdout] 678e02e5239e63c794c153e7c0de915225564363efe866c82305a15a33fdbc71
