[INFO] cloning repository https://github.com/moonseokchoi-kr/rust-server
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/moonseokchoi-kr/rust-server" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmoonseokchoi-kr%2Frust-server", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmoonseokchoi-kr%2Frust-server'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6fec853a465b5781dd19b57d842229495c7edc22
[INFO] checking moonseokchoi-kr/rust-server against master#2886b36df4a646dd8d82fb65bf0c9d8d96c1f71a for pr-145113
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmoonseokchoi-kr%2Frust-server" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/moonseokchoi-kr/rust-server
[INFO] finished tweaking git repo https://github.com/moonseokchoi-kr/rust-server
[INFO] tweaked toml for git repo https://github.com/moonseokchoi-kr/rust-server written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/moonseokchoi-kr/rust-server on toolchain 2886b36df4a646dd8d82fb65bf0c9d8d96c1f71a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2886b36df4a646dd8d82fb65bf0c9d8d96c1f71a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/moonseokchoi-kr/rust-server 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" "+2886b36df4a646dd8d82fb65bf0c9d8d96c1f71a" "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-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+2886b36df4a646dd8d82fb65bf0c9d8d96c1f71a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7338da3553aa415f860dbb9ae2a85f03dbccf77d10e853856900313a18ea6d16
[INFO] running `Command { std: "docker" "start" "-a" "7338da3553aa415f860dbb9ae2a85f03dbccf77d10e853856900313a18ea6d16", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7338da3553aa415f860dbb9ae2a85f03dbccf77d10e853856900313a18ea6d16", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7338da3553aa415f860dbb9ae2a85f03dbccf77d10e853856900313a18ea6d16", kill_on_drop: false }`
[INFO] [stdout] 7338da3553aa415f860dbb9ae2a85f03dbccf77d10e853856900313a18ea6d16
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+2886b36df4a646dd8d82fb65bf0c9d8d96c1f71a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 38c5d1a5e4e9a5975d77bb0e6e05a6653744b5158e18af8f606d0772a3e16d8e
[INFO] running `Command { std: "docker" "start" "-a" "38c5d1a5e4e9a5975d77bb0e6e05a6653744b5158e18af8f606d0772a3e16d8e", kill_on_drop: false }`
[INFO] [stderr]     Checking single_thread_server v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Thread`
[INFO] [stdout]  --> src/lib.rs:1:25
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::thread::{self, Thread};
[INFO] [stdout]   |                         ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Thread`
[INFO] [stdout]  --> src/lib.rs:1:25
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::thread::{self, Thread};
[INFO] [stdout]   |                         ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `workers` is never read
[INFO] [stdout]  --> src/lib.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct ThreadPool{
[INFO] [stdout]   |            ---------- field in this struct
[INFO] [stdout] 5 |     workers: Vec<Worker>,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `workers` is never read
[INFO] [stdout]  --> src/lib.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct ThreadPool{
[INFO] [stdout]   |            ---------- field in this struct
[INFO] [stdout] 5 |     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 `thread` are never read
[INFO] [stdout]   --> src/lib.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout]  9 | pub struct Worker{
[INFO] [stdout]    |            ------ fields in this struct
[INFO] [stdout] 10 |     id : usize,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 11 |     thread: thread::JoinHandle<()>,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `id` and `thread` are never read
[INFO] [stdout]   --> src/lib.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout]  9 | pub struct Worker{
[INFO] [stdout]    |            ------ fields in this struct
[INFO] [stdout] 10 |     id : usize,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 11 |     thread: thread::JoinHandle<()>,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Thread`
[INFO] [stdout]  --> src/bin/main.rs:5:25
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::thread::{self, Thread};
[INFO] [stdout]   |                         ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Thread`
[INFO] [stdout]  --> src/bin/main.rs:5:25
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::thread::{self, Thread};
[INFO] [stdout]   |                         ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.15s
[INFO] running `Command { std: "docker" "inspect" "38c5d1a5e4e9a5975d77bb0e6e05a6653744b5158e18af8f606d0772a3e16d8e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "38c5d1a5e4e9a5975d77bb0e6e05a6653744b5158e18af8f606d0772a3e16d8e", kill_on_drop: false }`
[INFO] [stdout] 38c5d1a5e4e9a5975d77bb0e6e05a6653744b5158e18af8f606d0772a3e16d8e