[INFO] cloning repository https://github.com/michaellindsay23/simple-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/michaellindsay23/simple-http-server-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmichaellindsay23%2Fsimple-http-server-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmichaellindsay23%2Fsimple-http-server-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 188cecd4cf818b95add0a92389da5f0765bb1534
[INFO] testing michaellindsay23/simple-http-server-rust against master#733b47ea4b1b86216f14ef56e49440c33933f230+rustflags=-Copt-level=3 for pr-138759-retry
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmichaellindsay23%2Fsimple-http-server-rust" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/michaellindsay23/simple-http-server-rust
[INFO] finished tweaking git repo https://github.com/michaellindsay23/simple-http-server-rust
[INFO] tweaked toml for git repo https://github.com/michaellindsay23/simple-http-server-rust written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/michaellindsay23/simple-http-server-rust on toolchain 733b47ea4b1b86216f14ef56e49440c33933f230
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+733b47ea4b1b86216f14ef56e49440c33933f230" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/michaellindsay23/simple-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" "+733b47ea4b1b86216f14ef56e49440c33933f230" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+733b47ea4b1b86216f14ef56e49440c33933f230" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c61e4d6ff391346ed3577c4e19a460b9062556d4eccaed3f2eadd77b0518a122
[INFO] running `Command { std: "docker" "start" "-a" "c61e4d6ff391346ed3577c4e19a460b9062556d4eccaed3f2eadd77b0518a122", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c61e4d6ff391346ed3577c4e19a460b9062556d4eccaed3f2eadd77b0518a122", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c61e4d6ff391346ed3577c4e19a460b9062556d4eccaed3f2eadd77b0518a122", kill_on_drop: false }`
[INFO] [stdout] c61e4d6ff391346ed3577c4e19a460b9062556d4eccaed3f2eadd77b0518a122
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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 -Copt-level=3" "-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" "+733b47ea4b1b86216f14ef56e49440c33933f230" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 07a09cc1db100e0ce43121c898b0f6a3f0971fcfc072d4215098c0883dd580ae
[INFO] running `Command { std: "docker" "start" "-a" "07a09cc1db100e0ce43121c898b0f6a3f0971fcfc072d4215098c0883dd580ae", kill_on_drop: false }`
[INFO] [stderr]    Compiling simple-http-server-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::fs::read`
[INFO] [stdout]  --> src/main.rs:1:6
[INFO] [stdout]   |
[INFO] [stdout] 1 | use {std::fs::read};
[INFO] [stdout]   |      ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `JoinHandle`
[INFO] [stdout]  --> src/threadpool.rs:1:52
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{sync::{mpsc, Arc, Mutex}, thread::{self, JoinHandle}};
[INFO] [stdout]   |                                                    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `workers` is never read
[INFO] [stdout]  --> src/threadpool.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct ThreadPool {
[INFO] [stdout]   |            ---------- field in this struct
[INFO] [stdout] 4 |     workers: Vec<Worker>,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `id` and `handle` are never read
[INFO] [stdout]   --> src/threadpool.rs:45:5
[INFO] [stdout]    |
[INFO] [stdout] 44 | struct Worker {
[INFO] [stdout]    |        ------ fields in this struct
[INFO] [stdout] 45 |     id: usize,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 46 |     handle: thread::JoinHandle<()>
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.69s
[INFO] running `Command { std: "docker" "inspect" "07a09cc1db100e0ce43121c898b0f6a3f0971fcfc072d4215098c0883dd580ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "07a09cc1db100e0ce43121c898b0f6a3f0971fcfc072d4215098c0883dd580ae", kill_on_drop: false }`
[INFO] [stdout] 07a09cc1db100e0ce43121c898b0f6a3f0971fcfc072d4215098c0883dd580ae
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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 -Copt-level=3" "-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" "+733b47ea4b1b86216f14ef56e49440c33933f230" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 866b67ffd394213ac037e6e3b11c6c5e4a7bb31e36ac47e8f610414557c6e502
[INFO] running `Command { std: "docker" "start" "-a" "866b67ffd394213ac037e6e3b11c6c5e4a7bb31e36ac47e8f610414557c6e502", kill_on_drop: false }`
[INFO] [stderr]    Compiling simple-http-server-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::fs::read`
[INFO] [stdout]  --> src/main.rs:1:6
[INFO] [stdout]   |
[INFO] [stdout] 1 | use {std::fs::read};
[INFO] [stdout]   |      ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `JoinHandle`
[INFO] [stdout]  --> src/threadpool.rs:1:52
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{sync::{mpsc, Arc, Mutex}, thread::{self, JoinHandle}};
[INFO] [stdout]   |                                                    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `workers` is never read
[INFO] [stdout]  --> src/threadpool.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct ThreadPool {
[INFO] [stdout]   |            ---------- field in this struct
[INFO] [stdout] 4 |     workers: Vec<Worker>,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `id` and `handle` are never read
[INFO] [stdout]   --> src/threadpool.rs:45:5
[INFO] [stdout]    |
[INFO] [stdout] 44 | struct Worker {
[INFO] [stdout]    |        ------ fields in this struct
[INFO] [stdout] 45 |     id: usize,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 46 |     handle: thread::JoinHandle<()>
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.35s
[INFO] running `Command { std: "docker" "inspect" "866b67ffd394213ac037e6e3b11c6c5e4a7bb31e36ac47e8f610414557c6e502", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "866b67ffd394213ac037e6e3b11c6c5e4a7bb31e36ac47e8f610414557c6e502", kill_on_drop: false }`
[INFO] [stdout] 866b67ffd394213ac037e6e3b11c6c5e4a7bb31e36ac47e8f610414557c6e502
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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 -Copt-level=3" "-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" "+733b47ea4b1b86216f14ef56e49440c33933f230" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] d89cc7f4523624ca053e5de3254420f3a0dcb04e0d9220274c43e05e0f6f3ad2
[INFO] running `Command { std: "docker" "start" "-a" "d89cc7f4523624ca053e5de3254420f3a0dcb04e0d9220274c43e05e0f6f3ad2", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `std::fs::read`
[INFO] [stderr]  --> src/main.rs:1:6
[INFO] [stderr]   |
[INFO] [stderr] 1 | use {std::fs::read};
[INFO] [stderr]   |      ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `JoinHandle`
[INFO] [stderr]  --> src/threadpool.rs:1:52
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::{sync::{mpsc, Arc, Mutex}, thread::{self, JoinHandle}};
[INFO] [stderr]   |                                                    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field `workers` is never read
[INFO] [stderr]  --> src/threadpool.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub struct ThreadPool {
[INFO] [stderr]   |            ---------- field in this struct
[INFO] [stderr] 4 |     workers: Vec<Worker>,
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: fields `id` and `handle` are never read
[INFO] [stderr]   --> src/threadpool.rs:45:5
[INFO] [stderr]    |
[INFO] [stderr] 44 | struct Worker {
[INFO] [stderr]    |        ------ fields in this struct
[INFO] [stderr] 45 |     id: usize,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 46 |     handle: thread::JoinHandle<()>
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `simple-http-server-rust` (bin "simple-http-server-rust" test) generated 4 warnings (run `cargo fix --bin "simple-http-server-rust" --tests` to apply 2 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/simple_http_server_rust-a1d84f674e5dbec8)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "d89cc7f4523624ca053e5de3254420f3a0dcb04e0d9220274c43e05e0f6f3ad2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d89cc7f4523624ca053e5de3254420f3a0dcb04e0d9220274c43e05e0f6f3ad2", kill_on_drop: false }`
[INFO] [stdout] d89cc7f4523624ca053e5de3254420f3a0dcb04e0d9220274c43e05e0f6f3ad2