[INFO] cloning repository https://github.com/compsci-simon/webserver
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/compsci-simon/webserver" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcompsci-simon%2Fwebserver", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcompsci-simon%2Fwebserver'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 671ed579fb4ada1a862c491ef8701686a7e86e5f
[INFO] checking compsci-simon/webserver against master#9c3064e131f4939cc95a29bb11413c49bbda1491 for pr-144098
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcompsci-simon%2Fwebserver" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/compsci-simon/webserver
[INFO] finished tweaking git repo https://github.com/compsci-simon/webserver
[INFO] tweaked toml for git repo https://github.com/compsci-simon/webserver written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/compsci-simon/webserver on toolchain 9c3064e131f4939cc95a29bb11413c49bbda1491
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9c3064e131f4939cc95a29bb11413c49bbda1491" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/compsci-simon/webserver 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" "+9c3064e131f4939cc95a29bb11413c49bbda1491" "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-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+9c3064e131f4939cc95a29bb11413c49bbda1491" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 02acf7a84865d543b6e7d3328d9766901661728a8be641dde6f62e20a09123dd
[INFO] running `Command { std: "docker" "start" "-a" "02acf7a84865d543b6e7d3328d9766901661728a8be641dde6f62e20a09123dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "02acf7a84865d543b6e7d3328d9766901661728a8be641dde6f62e20a09123dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "02acf7a84865d543b6e7d3328d9766901661728a8be641dde6f62e20a09123dd", kill_on_drop: false }`
[INFO] [stdout] 02acf7a84865d543b6e7d3328d9766901661728a8be641dde6f62e20a09123dd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+9c3064e131f4939cc95a29bb11413c49bbda1491" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5e0cd49c831a465a384ee169568d5dd6cd884ba7ef8406486b4e1ea0c6735ee9
[INFO] running `Command { std: "docker" "start" "-a" "5e0cd49c831a465a384ee169568d5dd6cd884ba7ef8406486b4e1ea0c6735ee9", kill_on_drop: false }`
[INFO] [stderr]     Checking rust-webserver v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::sync::mpsc::Receiver`
[INFO] [stdout]  --> src/server.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::sync::mpsc::Receiver;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::sync::mpsc::Receiver`
[INFO] [stdout]  --> src/server.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::sync::mpsc::Receiver;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `id` and `thread` are never read
[INFO] [stdout]   --> src/server.rs:15:3
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub struct Worker {
[INFO] [stdout]    |            ------ fields in this struct
[INFO] [stdout] 15 |   id: usize,
[INFO] [stdout]    |   ^^
[INFO] [stdout] 16 |   thread: thread::JoinHandle<()>,
[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/server.rs:34:3
[INFO] [stdout]    |
[INFO] [stdout] 33 | pub struct ThreadPool {
[INFO] [stdout]    |            ---------- field in this struct
[INFO] [stdout] 34 |   workers: Vec<Worker>,
[INFO] [stdout]    |   ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `id` and `thread` are never read
[INFO] [stdout]   --> src/server.rs:15:3
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub struct Worker {
[INFO] [stdout]    |            ------ fields in this struct
[INFO] [stdout] 15 |   id: usize,
[INFO] [stdout]    |   ^^
[INFO] [stdout] 16 |   thread: thread::JoinHandle<()>,
[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/server.rs:34:3
[INFO] [stdout]    |
[INFO] [stdout] 33 | pub struct ThreadPool {
[INFO] [stdout]    |            ---------- field in this struct
[INFO] [stdout] 34 |   workers: Vec<Worker>,
[INFO] [stdout]    |   ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.26s
[INFO] running `Command { std: "docker" "inspect" "5e0cd49c831a465a384ee169568d5dd6cd884ba7ef8406486b4e1ea0c6735ee9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e0cd49c831a465a384ee169568d5dd6cd884ba7ef8406486b4e1ea0c6735ee9", kill_on_drop: false }`
[INFO] [stdout] 5e0cd49c831a465a384ee169568d5dd6cd884ba7ef8406486b4e1ea0c6735ee9