[INFO] cloning repository https://github.com/sivese/rs-server
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sivese/rs-server" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsivese%2Frs-server", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsivese%2Frs-server'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f5908492668dd3ef4da1ee08beb73c612e9e7db2
[INFO] checking sivese/rs-server against master#d97bb195bf7b84815622b235cb51171c1b8f7e51 for pr-117905
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsivese%2Frs-server" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sivese/rs-server on toolchain d97bb195bf7b84815622b235cb51171c1b8f7e51
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d97bb195bf7b84815622b235cb51171c1b8f7e51" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/sivese/rs-server
[INFO] finished tweaking git repo https://github.com/sivese/rs-server
[INFO] tweaked toml for git repo https://github.com/sivese/rs-server written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/sivese/rs-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" "+d97bb195bf7b84815622b235cb51171c1b8f7e51" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[ERROR] this task or one of its parent failed!
[ERROR] no output for 300 seconds
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] checking sivese/rs-server against try#1930f260edd7e614aa013a0665aa5cfd0ada0501 for pr-117905
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsivese%2Frs-server" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sivese/rs-server on toolchain 1930f260edd7e614aa013a0665aa5cfd0ada0501
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1930f260edd7e614aa013a0665aa5cfd0ada0501" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/sivese/rs-server
[INFO] finished tweaking git repo https://github.com/sivese/rs-server
[INFO] tweaked toml for git repo https://github.com/sivese/rs-server written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/sivese/rs-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" "+1930f260edd7e614aa013a0665aa5cfd0ada0501" "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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1930f260edd7e614aa013a0665aa5cfd0ada0501" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7efb34ea3cd74a186874d1b4638606c3d75d19e0f05e48857b26d311fce55b31
[INFO] running `Command { std: "docker" "start" "-a" "7efb34ea3cd74a186874d1b4638606c3d75d19e0f05e48857b26d311fce55b31", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7efb34ea3cd74a186874d1b4638606c3d75d19e0f05e48857b26d311fce55b31", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7efb34ea3cd74a186874d1b4638606c3d75d19e0f05e48857b26d311fce55b31", kill_on_drop: false }`
[INFO] [stdout] 7efb34ea3cd74a186874d1b4638606c3d75d19e0f05e48857b26d311fce55b31
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1930f260edd7e614aa013a0665aa5cfd0ada0501" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3eed4a6e8ab0364bd0a790566941d8975f4816aa1e0d528af24e9d1b281f6fe6
[INFO] running `Command { std: "docker" "start" "-a" "3eed4a6e8ab0364bd0a790566941d8975f4816aa1e0d528af24e9d1b281f6fe6", kill_on_drop: false }`
[INFO] [stderr]     Checking server v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::thread::pool::ThreadPool`
[INFO] [stdout]  --> src/svr/server.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use crate::thread::pool::ThreadPool;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::net::TcpListener`
[INFO] [stdout]   --> src/svr/server.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use std::net::TcpListener;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `file`
[INFO] [stdout]   --> src/svr/server.rs:23:18
[INFO] [stdout]    |
[INFO] [stdout] 23 |     let (status, file) = if buffer.starts_with(get) {
[INFO] [stdout]    |                  ^^^^ help: if this is intentional, prefix it with an underscore: `_file`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `file`
[INFO] [stdout]   --> src/svr/server.rs:23:18
[INFO] [stdout]    |
[INFO] [stdout] 23 |     let (status, file) = if buffer.starts_with(get) {
[INFO] [stdout]    |                  ^^^^ help: if this is intentional, prefix it with an underscore: `_file`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Server` is never constructed
[INFO] [stdout]  --> src/svr/server.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct Server{
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `handle_connection` is never used
[INFO] [stdout]   --> src/svr/server.rs:15:4
[INFO] [stdout]    |
[INFO] [stdout] 15 | fn handle_connection(mut stream : TcpStream) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ThreadPool` is never constructed
[INFO] [stdout]  --> src/thread/pool.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct ThreadPool {
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Job` is never used
[INFO] [stdout]   --> src/thread/pool.rs:12:6
[INFO] [stdout]    |
[INFO] [stdout] 12 | type Job = Box<dyn FnOnce() + Send + 'static>;
[INFO] [stdout]    |      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `execute` are never used
[INFO] [stdout]   --> src/thread/pool.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 14 | impl ThreadPool {
[INFO] [stdout]    | --------------- associated items in this implementation
[INFO] [stdout] 15 |     pub fn new(size : usize) -> ThreadPool {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 29 |     pub fn execute<F>(&self, f : F)  where F : FnOnce() + Send + 'static, {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Worker` is never constructed
[INFO] [stdout]   --> src/thread/pool.rs:35:8
[INFO] [stdout]    |
[INFO] [stdout] 35 | struct Worker {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/thread/pool.rs:41:8
[INFO] [stdout]    |
[INFO] [stdout] 40 | impl Worker {
[INFO] [stdout]    | ----------- associated function in this implementation
[INFO] [stdout] 41 |     fn new(id : usize, receiver : Arc<Mutex<mpsc::Receiver<Job>>>) -> Worker {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: path statement drops value
[INFO] [stdout]   --> src/thread/pool.rs:45:17
[INFO] [stdout]    |
[INFO] [stdout] 45 |                 job;
[INFO] [stdout]    |                 ^^^^ help: use `drop` to clarify the intent: `drop(job);`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(path_statements)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pool`
[INFO] [stdout]   --> src/svr/server.rs:51:9
[INFO] [stdout]    |
[INFO] [stdout] 51 |     let pool = ThreadPool::new(4);
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_pool`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused boxed `FnOnce` trait object that must be used
[INFO] [stdout]   --> src/thread/pool.rs:45:17
[INFO] [stdout]    |
[INFO] [stdout] 45 |                 job;
[INFO] [stdout]    |                 ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: closures are lazy and do nothing unless called
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Server` is never constructed
[INFO] [stdout]  --> src/svr/server.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct Server{
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `threads` and `sender` are never read
[INFO] [stdout]  --> src/thread/pool.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct ThreadPool {
[INFO] [stdout]   |            ---------- fields in this struct
[INFO] [stdout] 8 |     threads : Vec<Worker>,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 9 |     sender : mpsc::Sender<Job>
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `execute` is never used
[INFO] [stdout]   --> src/thread/pool.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 14 | impl ThreadPool {
[INFO] [stdout]    | --------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 29 |     pub fn execute<F>(&self, f : F)  where F : FnOnce() + Send + 'static, {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `id` and `thread` are never read
[INFO] [stdout]   --> src/thread/pool.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 35 | struct Worker {
[INFO] [stdout]    |        ------ fields in this struct
[INFO] [stdout] 36 |     id : usize,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 37 |     thread : thread::JoinHandle<()>
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: path statement drops value
[INFO] [stdout]   --> src/thread/pool.rs:45:17
[INFO] [stdout]    |
[INFO] [stdout] 45 |                 job;
[INFO] [stdout]    |                 ^^^^ help: use `drop` to clarify the intent: `drop(job);`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(path_statements)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused boxed `FnOnce` trait object that must be used
[INFO] [stdout]   --> src/thread/pool.rs:45:17
[INFO] [stdout]    |
[INFO] [stdout] 45 |                 job;
[INFO] [stdout]    |                 ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: closures are lazy and do nothing unless called
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.09s
[INFO] running `Command { std: "docker" "inspect" "3eed4a6e8ab0364bd0a790566941d8975f4816aa1e0d528af24e9d1b281f6fe6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3eed4a6e8ab0364bd0a790566941d8975f4816aa1e0d528af24e9d1b281f6fe6", kill_on_drop: false }`
[INFO] [stdout] 3eed4a6e8ab0364bd0a790566941d8975f4816aa1e0d528af24e9d1b281f6fe6