[INFO] cloning repository https://github.com/Beans-18/Rust-ThreadPool
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Beans-18/Rust-ThreadPool" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBeans-18%2FRust-ThreadPool", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBeans-18%2FRust-ThreadPool'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 602ccc2fb94cfbdc9d4007fa6edeb220c9d1fa99
[INFO] checking Beans-18/Rust-ThreadPool against try#93086cfebfccb79083c59d0d3b2052944bba643c for pr-146440-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBeans-18%2FRust-ThreadPool" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Beans-18/Rust-ThreadPool
[INFO] finished tweaking git repo https://github.com/Beans-18/Rust-ThreadPool
[INFO] tweaked toml for git repo https://github.com/Beans-18/Rust-ThreadPool written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Beans-18/Rust-ThreadPool on toolchain 93086cfebfccb79083c59d0d3b2052944bba643c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+93086cfebfccb79083c59d0d3b2052944bba643c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Beans-18/Rust-ThreadPool 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" "+93086cfebfccb79083c59d0d3b2052944bba643c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+93086cfebfccb79083c59d0d3b2052944bba643c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5b2a67f480b3782f0230cfb5dfc16b3b2c4680c2d2859cf81dd5fc2e30dcbe97
[INFO] running `Command { std: "docker" "start" "-a" "5b2a67f480b3782f0230cfb5dfc16b3b2c4680c2d2859cf81dd5fc2e30dcbe97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5b2a67f480b3782f0230cfb5dfc16b3b2c4680c2d2859cf81dd5fc2e30dcbe97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b2a67f480b3782f0230cfb5dfc16b3b2c4680c2d2859cf81dd5fc2e30dcbe97", kill_on_drop: false }`
[INFO] [stdout] 5b2a67f480b3782f0230cfb5dfc16b3b2c4680c2d2859cf81dd5fc2e30dcbe97
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+93086cfebfccb79083c59d0d3b2052944bba643c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4b3fd75a9468057056a9fa8bbf4047d7ef4b0ea3fe2e2b24a3228159def6b5b9
[INFO] running `Command { std: "docker" "start" "-a" "4b3fd75a9468057056a9fa8bbf4047d7ef4b0ea3fe2e2b24a3228159def6b5b9", kill_on_drop: false }`
[INFO] [stderr]     Checking ThreadPool v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/lib.rs:15:13
[INFO] [stdout]    |
[INFO] [stdout] 15 |         for x in 0..numberofworkers {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/lib.rs:53:13
[INFO] [stdout]    |
[INFO] [stdout] 53 |         for i in &self.Workers {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: struct `ThreadPool` is never constructed
[INFO] [stdout]  --> src/lib.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct ThreadPool {
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout]   = note: `#[deny(unused_unconstructable_pub_structs)]` (part of `#[deny(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `execute` are never used
[INFO] [stdout]   --> src/lib.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl ThreadPool {
[INFO] [stdout]    | --------------- associated items in this implementation
[INFO] [stdout] 11 |     fn new(numberofworkers: u16) -> ThreadPool {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 24 |     fn execute<T>(&self, function: T) where T: FnOnce() + Send + 'static, {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `thread` is never read
[INFO] [stdout]   --> src/lib.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub struct Workers {
[INFO] [stdout]    |            ------- field in this struct
[INFO] [stdout] 30 |     thread: Option<thread::JoinHandle<()>>,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `ThreadPool` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = help: convert the identifier to snake case: `thread_pool`
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `Workers` should have a snake case name
[INFO] [stdout]  --> src/lib.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     Workers: Vec<Workers>,
[INFO] [stdout]   |     ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `workers`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `Sender` should have a snake case name
[INFO] [stdout]  --> src/lib.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     Sender: mpsc::Sender<Message>,
[INFO] [stdout]   |     ^^^^^^ help: convert the identifier to snake case (notice the capitalization): `sender`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ThreadPool` (lib) due to 1 previous error; 7 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/lib.rs:15:13
[INFO] [stdout]    |
[INFO] [stdout] 15 |         for x in 0..numberofworkers {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/lib.rs:53:13
[INFO] [stdout]    |
[INFO] [stdout] 53 |         for i in &self.Workers {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: struct `ThreadPool` is never constructed
[INFO] [stdout]  --> src/lib.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct ThreadPool {
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout]   = note: `#[deny(unused_unconstructable_pub_structs)]` (part of `#[deny(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `execute` are never used
[INFO] [stdout]   --> src/lib.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl ThreadPool {
[INFO] [stdout]    | --------------- associated items in this implementation
[INFO] [stdout] 11 |     fn new(numberofworkers: u16) -> ThreadPool {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 24 |     fn execute<T>(&self, function: T) where T: FnOnce() + Send + 'static, {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `thread` is never read
[INFO] [stdout]   --> src/lib.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub struct Workers {
[INFO] [stdout]    |            ------- field in this struct
[INFO] [stdout] 30 |     thread: Option<thread::JoinHandle<()>>,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `Workers` should have a snake case name
[INFO] [stdout]  --> src/lib.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     Workers: Vec<Workers>,
[INFO] [stdout]   |     ^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `workers`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: structure field `Sender` should have a snake case name
[INFO] [stdout]  --> src/lib.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     Sender: mpsc::Sender<Message>,
[INFO] [stdout]   |     ^^^^^^ help: convert the identifier to snake case (notice the capitalization): `sender`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ThreadPool` (lib test) due to 1 previous error; 6 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "4b3fd75a9468057056a9fa8bbf4047d7ef4b0ea3fe2e2b24a3228159def6b5b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4b3fd75a9468057056a9fa8bbf4047d7ef4b0ea3fe2e2b24a3228159def6b5b9", kill_on_drop: false }`
[INFO] [stdout] 4b3fd75a9468057056a9fa8bbf4047d7ef4b0ea3fe2e2b24a3228159def6b5b9