[INFO] updating cached repository https://github.com/MwlLj/rust-pool
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/mnt/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] b0eebad8e241817116472c4a1baec22c7b5133cc
[INFO] checking MwlLj/rust-pool against try#e689e5eaefe96e6dc3ed5bb629c521b7d207aff7 for pr-64398
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2FMwlLj%2Frust-pool" "work/builds/worker-7/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/MwlLj/rust-pool on toolchain e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/MwlLj/rust-pool
[INFO] finished tweaking git repo https://github.com/MwlLj/rust-pool
[INFO] tweaked toml for git repo https://github.com/MwlLj/rust-pool written to work/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/MwlLj/rust-pool already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/mnt/big/crater/work/builds/worker-7/source:/opt/rustwide/workdir:ro,Z" "-v" "/mnt/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 6bbb386882ce971c7ac5457dd3d188aa3cc1806ffab6edd131f7f9b3d3a4f354
[INFO] running `"docker" "start" "-a" "6bbb386882ce971c7ac5457dd3d188aa3cc1806ffab6edd131f7f9b3d3a4f354"`
[INFO] [stderr]     Checking rust_pool v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `std::io::prelude::*`
[INFO] [stderr]  --> src/thread/simple/mod.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::io::prelude::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/thread/simple/mod.rs:18:17
[INFO] [stderr]    |
[INFO] [stderr] 18 | type CJob = Box<IFnBox + Send + 'static>;
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn IFnBox + Send + 'static`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `handler`
[INFO] [stderr]   --> src/thread/simple/mod.rs:21:2
[INFO] [stderr]    |
[INFO] [stderr] 21 |     handler: thread::JoinHandle<()>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `threadNo`
[INFO] [stderr]   --> src/thread/simple/mod.rs:22:2
[INFO] [stderr]    |
[INFO] [stderr] 22 |     threadNo: usize
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `workers`
[INFO] [stderr]   --> src/thread/simple/mod.rs:51:2
[INFO] [stderr]    |
[INFO] [stderr] 51 |     workers: Vec<CWorker>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: structure field `threadNo` should have a snake case name
[INFO] [stderr]   --> src/thread/simple/mod.rs:22:2
[INFO] [stderr]    |
[INFO] [stderr] 22 |     threadNo: usize
[INFO] [stderr]    |     ^^^^^^^^ help: convert the identifier to snake case: `thread_no`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `threadNo` should have a snake case name
[INFO] [stderr]   --> src/thread/simple/mod.rs:26:9
[INFO] [stderr]    |
[INFO] [stderr] 26 |     fn new(threadNo: usize, receiver: Arc<Mutex<mpsc::Receiver<CJob>>>) -> CWorker {
[INFO] [stderr]    |            ^^^^^^^^ help: convert the identifier to snake case: `thread_no`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `threadPool` should have a snake case name
[INFO] [stderr]   --> src/thread/simple/mod.rs:69:7
[INFO] [stderr]    |
[INFO] [stderr] 69 |         let threadPool = CThreadPool {
[INFO] [stderr]    |             ^^^^^^^^^^ help: convert the identifier to snake case: `thread_pool`
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/thread/simple/mod.rs:79:3
[INFO] [stderr]    |
[INFO] [stderr] 79 |         self.sender.send(Box::new(f));
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io::prelude::*`
[INFO] [stderr]  --> src/thread/simple/mod.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::io::prelude::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/thread/simple/mod.rs:18:17
[INFO] [stderr]    |
[INFO] [stderr] 18 | type CJob = Box<IFnBox + Send + 'static>;
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn IFnBox + Send + 'static`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `handler`
[INFO] [stderr]   --> src/thread/simple/mod.rs:21:2
[INFO] [stderr]    |
[INFO] [stderr] 21 |     handler: thread::JoinHandle<()>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `threadNo`
[INFO] [stderr]   --> src/thread/simple/mod.rs:22:2
[INFO] [stderr]    |
[INFO] [stderr] 22 |     threadNo: usize
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `workers`
[INFO] [stderr]   --> src/thread/simple/mod.rs:51:2
[INFO] [stderr]    |
[INFO] [stderr] 51 |     workers: Vec<CWorker>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: structure field `threadNo` should have a snake case name
[INFO] [stderr]   --> src/thread/simple/mod.rs:22:2
[INFO] [stderr]    |
[INFO] [stderr] 22 |     threadNo: usize
[INFO] [stderr]    |     ^^^^^^^^ help: convert the identifier to snake case: `thread_no`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `threadNo` should have a snake case name
[INFO] [stderr]   --> src/thread/simple/mod.rs:26:9
[INFO] [stderr]    |
[INFO] [stderr] 26 |     fn new(threadNo: usize, receiver: Arc<Mutex<mpsc::Receiver<CJob>>>) -> CWorker {
[INFO] [stderr]    |            ^^^^^^^^ help: convert the identifier to snake case: `thread_no`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `threadPool` should have a snake case name
[INFO] [stderr]   --> src/thread/simple/mod.rs:69:7
[INFO] [stderr]    |
[INFO] [stderr] 69 |         let threadPool = CThreadPool {
[INFO] [stderr]    |             ^^^^^^^^^^ help: convert the identifier to snake case: `thread_pool`
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/thread/simple/mod.rs:79:3
[INFO] [stderr]    |
[INFO] [stderr] 79 |         self.sender.send(Box::new(f));
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.53s
[INFO] running `"docker" "inspect" "6bbb386882ce971c7ac5457dd3d188aa3cc1806ffab6edd131f7f9b3d3a4f354"`
[INFO] running `"docker" "rm" "-f" "6bbb386882ce971c7ac5457dd3d188aa3cc1806ffab6edd131f7f9b3d3a4f354"`
[INFO] [stdout] 6bbb386882ce971c7ac5457dd3d188aa3cc1806ffab6edd131f7f9b3d3a4f354