[INFO] cloning repository https://github.com/bczhc/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/bczhc/simple-http-server-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbczhc%2Fsimple-http-server-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbczhc%2Fsimple-http-server-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] db61a8a9c6c6e6b0c5d782c8c2d1d44bb55a99bc
[INFO] checking bczhc/simple-http-server-rust against master#ca77504943887037504c7fc0b9bf06dab3910373 for pr-145181
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbczhc%2Fsimple-http-server-rust" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/bczhc/simple-http-server-rust
[INFO] finished tweaking git repo https://github.com/bczhc/simple-http-server-rust
[INFO] tweaked toml for git repo https://github.com/bczhc/simple-http-server-rust written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/bczhc/simple-http-server-rust on toolchain ca77504943887037504c7fc0b9bf06dab3910373
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ca77504943887037504c7fc0b9bf06dab3910373" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/bczhc/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" "+ca77504943887037504c7fc0b9bf06dab3910373" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:ae6f63d130afcfff7f91f5ba9fdb2a74d52830289c6a2ea2d23a94dcfb480a0d" "/opt/rustwide/cargo-home/bin/cargo" "+ca77504943887037504c7fc0b9bf06dab3910373" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 51338d520dc4a9452af0268ea345be77aac83d069c95c864151382d788b08a35
[INFO] running `Command { std: "docker" "start" "-a" "51338d520dc4a9452af0268ea345be77aac83d069c95c864151382d788b08a35", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "51338d520dc4a9452af0268ea345be77aac83d069c95c864151382d788b08a35", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "51338d520dc4a9452af0268ea345be77aac83d069c95c864151382d788b08a35", kill_on_drop: false }`
[INFO] [stdout] 51338d520dc4a9452af0268ea345be77aac83d069c95c864151382d788b08a35
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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_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:ae6f63d130afcfff7f91f5ba9fdb2a74d52830289c6a2ea2d23a94dcfb480a0d" "/opt/rustwide/cargo-home/bin/cargo" "+ca77504943887037504c7fc0b9bf06dab3910373" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d6010a3d646570163b8838ac991a6b5fabb91e04364799377b9e7d760019835d
[INFO] running `Command { std: "docker" "start" "-a" "d6010a3d646570163b8838ac991a6b5fabb91e04364799377b9e7d760019835d", kill_on_drop: false }`
[INFO] [stderr]     Checking simple-http-server v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `SocketAddrV4`
[INFO] [stdout]  --> src/main.rs:3:28
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::net::{SocketAddr, SocketAddrV4, TcpListener, TcpStream};
[INFO] [stdout]   |                            ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::sync::Arc`
[INFO] [stdout]  --> src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::sync::Arc;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `RecvError`
[INFO] [stdout]  --> src/thread_pool.rs:1:32
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::sync::mpsc::{channel, RecvError, SendError, Sender};
[INFO] [stdout]   |                                ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `SocketAddrV4`
[INFO] [stdout]  --> src/main.rs:3:28
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::net::{SocketAddr, SocketAddrV4, TcpListener, TcpStream};
[INFO] [stdout]   |                            ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::sync::Arc`
[INFO] [stdout]  --> src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::sync::Arc;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `RecvError`
[INFO] [stdout]  --> src/thread_pool.rs:1:32
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::sync::mpsc::{channel, RecvError, SendError, Sender};
[INFO] [stdout]   |                                ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `Message` is more private than the item `ThreadPoolError::SendTaskError::0`
[INFO] [stdout]   --> src/thread_pool.rs:72:19
[INFO] [stdout]    |
[INFO] [stdout] 72 |     SendTaskError(SendError<Message>),
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^ field `ThreadPoolError::SendTaskError::0` is reachable at visibility `pub(crate)`
[INFO] [stdout]    |
[INFO] [stdout] note: but type `Message` is only usable at visibility `pub(self)`
[INFO] [stdout]   --> src/thread_pool.rs:65:1
[INFO] [stdout]    |
[INFO] [stdout] 65 | enum Message {
[INFO] [stdout]    | ^^^^^^^^^^^^
[INFO] [stdout]    = note: `#[warn(private_interfaces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/thread_pool.rs:72:19
[INFO] [stdout]    |
[INFO] [stdout] 72 |     SendTaskError(SendError<Message>),
[INFO] [stdout]    |     ------------- ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ThreadPoolError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[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] 72 -     SendTaskError(SendError<Message>),
[INFO] [stdout] 72 +     SendTaskError(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `Message` is more private than the item `ThreadPoolError::SendTaskError::0`
[INFO] [stdout]   --> src/thread_pool.rs:72:19
[INFO] [stdout]    |
[INFO] [stdout] 72 |     SendTaskError(SendError<Message>),
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^ field `ThreadPoolError::SendTaskError::0` is reachable at visibility `pub(crate)`
[INFO] [stdout]    |
[INFO] [stdout] note: but type `Message` is only usable at visibility `pub(self)`
[INFO] [stdout]   --> src/thread_pool.rs:65:1
[INFO] [stdout]    |
[INFO] [stdout] 65 | enum Message {
[INFO] [stdout]    | ^^^^^^^^^^^^
[INFO] [stdout]    = note: `#[warn(private_interfaces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/thread_pool.rs:72:19
[INFO] [stdout]    |
[INFO] [stdout] 72 |     SendTaskError(SendError<Message>),
[INFO] [stdout]    |     ------------- ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ThreadPoolError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[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] 72 -     SendTaskError(SendError<Message>),
[INFO] [stdout] 72 +     SendTaskError(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/thread_pool.rs:54:17
[INFO] [stdout]    |
[INFO] [stdout] 54 |                 self.queue_sender.send(Message::Terminate);
[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)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 54 |                 let _ = self.queue_sender.send(Message::Terminate);
[INFO] [stdout]    |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/thread_pool.rs:54:17
[INFO] [stdout]    |
[INFO] [stdout] 54 |                 self.queue_sender.send(Message::Terminate);
[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)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 54 |                 let _ = self.queue_sender.send(Message::Terminate);
[INFO] [stdout]    |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.11s
[INFO] running `Command { std: "docker" "inspect" "d6010a3d646570163b8838ac991a6b5fabb91e04364799377b9e7d760019835d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d6010a3d646570163b8838ac991a6b5fabb91e04364799377b9e7d760019835d", kill_on_drop: false }`
[INFO] [stdout] d6010a3d646570163b8838ac991a6b5fabb91e04364799377b9e7d760019835d