[INFO] updating cached repository https://github.com/MwlLj/rust-pool
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/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] c85127efbf1d85f740ace63f803d5ef516de58c5
[INFO] testing MwlLj/rust-pool against beta-2020-06-03 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMwlLj%2Frust-pool" "/workspace/builds/worker-13/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/MwlLj/rust-pool on toolchain beta-2020-06-03
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "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 /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/MwlLj/rust-pool already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-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" "+beta-2020-06-03" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] ad9f52fb79ce5345fffeffd71c83093d7bb0491656c07ba086b3d69f49441c7c
[INFO] running `"docker" "start" "-a" "ad9f52fb79ce5345fffeffd71c83093d7bb0491656c07ba086b3d69f49441c7c"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling 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: unused import: `std::sync`
[INFO] [stderr]  --> src/thread/mapping/mod.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::sync;
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `obj`
[INFO] [stderr]   --> src/thread/mapping/mod.rs:45:17
[INFO] [stderr]    |
[INFO] [stderr] 45 |             let obj = notFoundCb();
[INFO] [stderr]    |                 ^^^ help: if this is intentional, prefix it with an underscore: `_obj`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `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 read: `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 read: `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: struct is never constructed: `CThread`
[INFO] [stderr]   --> src/thread/mapping/mod.rs:19:8
[INFO] [stderr]    |
[INFO] [stderr] 19 | struct CThread {
[INFO] [stderr]    |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `CThreadPool`
[INFO] [stderr]   --> src/thread/mapping/mod.rs:24:8
[INFO] [stderr]    |
[INFO] [stderr] 24 | struct CThreadPool {
[INFO] [stderr]    |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `execute`
[INFO] [stderr]   --> src/thread/mapping/mod.rs:29:12
[INFO] [stderr]    |
[INFO] [stderr] 29 |     pub fn execute<NC, F, T>(&mut self, key: &str, notFoundCb: NC, callback: F)
[INFO] [stderr]    |            ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/thread/mapping/mod.rs:71:12
[INFO] [stderr]    |
[INFO] [stderr] 71 |     pub fn new() -> CThreadPool {
[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: variable `notFoundCb` should have a snake case name
[INFO] [stderr]   --> src/thread/mapping/mod.rs:29:52
[INFO] [stderr]    |
[INFO] [stderr] 29 |     pub fn execute<NC, F, T>(&mut self, key: &str, notFoundCb: NC, callback: F)
[INFO] [stderr]    |                                                    ^^^^^^^^^^ help: convert the identifier to snake case: `not_found_cb`
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/thread/mapping/mod.rs:38:13
[INFO] [stderr]    |
[INFO] [stderr] 38 |             t.sender.send(Box::new(callback));
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/thread/mapping/mod.rs:62:17
[INFO] [stderr]    |
[INFO] [stderr] 62 |                 t.sender.send(Box::new(callback));
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: 18 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.99s
[INFO] running `"docker" "inspect" "ad9f52fb79ce5345fffeffd71c83093d7bb0491656c07ba086b3d69f49441c7c"`
[INFO] running `"docker" "rm" "-f" "ad9f52fb79ce5345fffeffd71c83093d7bb0491656c07ba086b3d69f49441c7c"`
[INFO] [stdout] ad9f52fb79ce5345fffeffd71c83093d7bb0491656c07ba086b3d69f49441c7c
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-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" "+beta-2020-06-03" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 0c5f5f3055f9b59be3cc87a0d00589dab90220dae5095b6089b6d70f1da9c08d
[INFO] running `"docker" "start" "-a" "0c5f5f3055f9b59be3cc87a0d00589dab90220dae5095b6089b6d70f1da9c08d"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling 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: unused import: `std::sync`
[INFO] [stderr]  --> src/thread/mapping/mod.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::sync;
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `obj`
[INFO] [stderr]   --> src/thread/mapping/mod.rs:45:17
[INFO] [stderr]    |
[INFO] [stderr] 45 |             let obj = notFoundCb();
[INFO] [stderr]    |                 ^^^ help: if this is intentional, prefix it with an underscore: `_obj`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `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 read: `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 read: `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: struct is never constructed: `CThread`
[INFO] [stderr]   --> src/thread/mapping/mod.rs:19:8
[INFO] [stderr]    |
[INFO] [stderr] 19 | struct CThread {
[INFO] [stderr]    |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `CThreadPool`
[INFO] [stderr]   --> src/thread/mapping/mod.rs:24:8
[INFO] [stderr]    |
[INFO] [stderr] 24 | struct CThreadPool {
[INFO] [stderr]    |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `execute`
[INFO] [stderr]   --> src/thread/mapping/mod.rs:29:12
[INFO] [stderr]    |
[INFO] [stderr] 29 |     pub fn execute<NC, F, T>(&mut self, key: &str, notFoundCb: NC, callback: F)
[INFO] [stderr]    |            ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/thread/mapping/mod.rs:71:12
[INFO] [stderr]    |
[INFO] [stderr] 71 |     pub fn new() -> CThreadPool {
[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: variable `notFoundCb` should have a snake case name
[INFO] [stderr]   --> src/thread/mapping/mod.rs:29:52
[INFO] [stderr]    |
[INFO] [stderr] 29 |     pub fn execute<NC, F, T>(&mut self, key: &str, notFoundCb: NC, callback: F)
[INFO] [stderr]    |                                                    ^^^^^^^^^^ help: convert the identifier to snake case: `not_found_cb`
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/thread/mapping/mod.rs:38:13
[INFO] [stderr]    |
[INFO] [stderr] 38 |             t.sender.send(Box::new(callback));
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/thread/mapping/mod.rs:62:17
[INFO] [stderr]    |
[INFO] [stderr] 62 |                 t.sender.send(Box::new(callback));
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: 18 warnings emitted
[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: unused import: `std::sync`
[INFO] [stderr]  --> src/thread/mapping/mod.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::sync;
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `obj`
[INFO] [stderr]   --> src/thread/mapping/mod.rs:45:17
[INFO] [stderr]    |
[INFO] [stderr] 45 |             let obj = notFoundCb();
[INFO] [stderr]    |                 ^^^ help: if this is intentional, prefix it with an underscore: `_obj`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `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 read: `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 read: `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: struct is never constructed: `CThread`
[INFO] [stderr]   --> src/thread/mapping/mod.rs:19:8
[INFO] [stderr]    |
[INFO] [stderr] 19 | struct CThread {
[INFO] [stderr]    |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `CThreadPool`
[INFO] [stderr]   --> src/thread/mapping/mod.rs:24:8
[INFO] [stderr]    |
[INFO] [stderr] 24 | struct CThreadPool {
[INFO] [stderr]    |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `execute`
[INFO] [stderr]   --> src/thread/mapping/mod.rs:29:12
[INFO] [stderr]    |
[INFO] [stderr] 29 |     pub fn execute<NC, F, T>(&mut self, key: &str, notFoundCb: NC, callback: F)
[INFO] [stderr]    |            ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/thread/mapping/mod.rs:71:12
[INFO] [stderr]    |
[INFO] [stderr] 71 |     pub fn new() -> CThreadPool {
[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: variable `notFoundCb` should have a snake case name
[INFO] [stderr]   --> src/thread/mapping/mod.rs:29:52
[INFO] [stderr]    |
[INFO] [stderr] 29 |     pub fn execute<NC, F, T>(&mut self, key: &str, notFoundCb: NC, callback: F)
[INFO] [stderr]    |                                                    ^^^^^^^^^^ help: convert the identifier to snake case: `not_found_cb`
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/thread/mapping/mod.rs:38:13
[INFO] [stderr]    |
[INFO] [stderr] 38 |             t.sender.send(Box::new(callback));
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/thread/mapping/mod.rs:62:17
[INFO] [stderr]    |
[INFO] [stderr] 62 |                 t.sender.send(Box::new(callback));
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: 18 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.92s
[INFO] running `"docker" "inspect" "0c5f5f3055f9b59be3cc87a0d00589dab90220dae5095b6089b6d70f1da9c08d"`
[INFO] running `"docker" "rm" "-f" "0c5f5f3055f9b59be3cc87a0d00589dab90220dae5095b6089b6d70f1da9c08d"`
[INFO] [stdout] 0c5f5f3055f9b59be3cc87a0d00589dab90220dae5095b6089b6d70f1da9c08d
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-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" "+beta-2020-06-03" "test" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] e4485a9bc7d8a4b253a5ad0e3e6d5003489b97fe82e26261f1c15cc5cc27cc34
[INFO] running `"docker" "start" "-a" "e4485a9bc7d8a4b253a5ad0e3e6d5003489b97fe82e26261f1c15cc5cc27cc34"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[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: unused import: `std::sync`
[INFO] [stderr]  --> src/thread/mapping/mod.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::sync;
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `obj`
[INFO] [stderr]   --> src/thread/mapping/mod.rs:45:17
[INFO] [stderr]    |
[INFO] [stderr] 45 |             let obj = notFoundCb();
[INFO] [stderr]    |                 ^^^ help: if this is intentional, prefix it with an underscore: `_obj`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `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 read: `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 read: `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: struct is never constructed: `CThread`
[INFO] [stderr]   --> src/thread/mapping/mod.rs:19:8
[INFO] [stderr]    |
[INFO] [stderr] 19 | struct CThread {
[INFO] [stderr]    |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `CThreadPool`
[INFO] [stderr]   --> src/thread/mapping/mod.rs:24:8
[INFO] [stderr]    |
[INFO] [stderr] 24 | struct CThreadPool {
[INFO] [stderr]    |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `execute`
[INFO] [stderr]   --> src/thread/mapping/mod.rs:29:12
[INFO] [stderr]    |
[INFO] [stderr] 29 |     pub fn execute<NC, F, T>(&mut self, key: &str, notFoundCb: NC, callback: F)
[INFO] [stderr]    |            ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/thread/mapping/mod.rs:71:12
[INFO] [stderr]    |
[INFO] [stderr] 71 |     pub fn new() -> CThreadPool {
[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: variable `notFoundCb` should have a snake case name
[INFO] [stderr]   --> src/thread/mapping/mod.rs:29:52
[INFO] [stderr]    |
[INFO] [stderr] 29 |     pub fn execute<NC, F, T>(&mut self, key: &str, notFoundCb: NC, callback: F)
[INFO] [stderr]    |                                                    ^^^^^^^^^^ help: convert the identifier to snake case: `not_found_cb`
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/thread/mapping/mod.rs:38:13
[INFO] [stderr]    |
[INFO] [stderr] 38 |             t.sender.send(Box::new(callback));
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/thread/mapping/mod.rs:62:17
[INFO] [stderr]    |
[INFO] [stderr] 62 |                 t.sender.send(Box::new(callback));
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: 18 warnings emitted
[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: unused import: `std::sync`
[INFO] [stderr]  --> src/thread/mapping/mod.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::sync;
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `obj`
[INFO] [stderr]   --> src/thread/mapping/mod.rs:45:17
[INFO] [stderr]    |
[INFO] [stderr] 45 |             let obj = notFoundCb();
[INFO] [stderr]    |                 ^^^ help: if this is intentional, prefix it with an underscore: `_obj`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `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 read: `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 read: `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: struct is never constructed: `CThread`
[INFO] [stderr]   --> src/thread/mapping/mod.rs:19:8
[INFO] [stderr]    |
[INFO] [stderr] 19 | struct CThread {
[INFO] [stderr]    |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `CThreadPool`
[INFO] [stderr]   --> src/thread/mapping/mod.rs:24:8
[INFO] [stderr]    |
[INFO] [stderr] 24 | struct CThreadPool {
[INFO] [stderr]    |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `execute`
[INFO] [stderr]   --> src/thread/mapping/mod.rs:29:12
[INFO] [stderr]    |
[INFO] [stderr] 29 |     pub fn execute<NC, F, T>(&mut self, key: &str, notFoundCb: NC, callback: F)
[INFO] [stderr]    |            ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/thread/mapping/mod.rs:71:12
[INFO] [stderr]    |
[INFO] [stderr] 71 |     pub fn new() -> CThreadPool {
[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: variable `notFoundCb` should have a snake case name
[INFO] [stderr]   --> src/thread/mapping/mod.rs:29:52
[INFO] [stderr]    |
[INFO] [stderr] 29 |     pub fn execute<NC, F, T>(&mut self, key: &str, notFoundCb: NC, callback: F)
[INFO] [stderr]    |                                                    ^^^^^^^^^^ help: convert the identifier to snake case: `not_found_cb`
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/thread/mapping/mod.rs:38:13
[INFO] [stderr]    |
[INFO] [stderr] 38 |             t.sender.send(Box::new(callback));
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/thread/mapping/mod.rs:62:17
[INFO] [stderr]    |
[INFO] [stderr] 62 |                 t.sender.send(Box::new(callback));
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: 18 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/rust_pool-d289dbd364e59bf9
[INFO] [stderr]    Doc-tests rust_pool
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::it_works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "e4485a9bc7d8a4b253a5ad0e3e6d5003489b97fe82e26261f1c15cc5cc27cc34"`
[INFO] running `"docker" "rm" "-f" "e4485a9bc7d8a4b253a5ad0e3e6d5003489b97fe82e26261f1c15cc5cc27cc34"`
[INFO] [stdout] e4485a9bc7d8a4b253a5ad0e3e6d5003489b97fe82e26261f1c15cc5cc27cc34