[INFO] updating cached repository https://github.com/MwlLj/rust-pool
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/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] c85127efbf1d85f740ace63f803d5ef516de58c5
[INFO] testing MwlLj/rust-pool against 1.38.0 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2FMwlLj%2Frust-pool" "work/builds/worker-9/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/MwlLj/rust-pool on toolchain 1.38.0
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "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-9/source/Cargo.toml
[INFO] crate git repo https://github.com/MwlLj/rust-pool already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-9/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/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=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" "+1.38.0" "build" "--frozen"`
[INFO] [stdout] d43d77f08a53451cc3a8441040c4cfe22f9cc9f08134ff7283706a2f08a04a29
[INFO] running `"docker" "start" "-a" "d43d77f08a53451cc3a8441040c4cfe22f9cc9f08134ff7283706a2f08a04a29"`
[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: consider prefixing with an underscore: `_obj`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` 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: struct is never constructed: `CThread`
[INFO] [stderr]   --> src/thread/mapping/mod.rs:19:1
[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:24:1
[INFO] [stderr]    |
[INFO] [stderr] 24 | struct CThreadPool {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `execute`
[INFO] [stderr]   --> src/thread/mapping/mod.rs:29:5
[INFO] [stderr]    |
[INFO] [stderr] 29 | /     pub fn execute<NC, F, T>(&mut self, key: &str, notFoundCb: NC, callback: F)
[INFO] [stderr] 30 | |         where NC: FnOnce() -> T,
[INFO] [stderr] 31 | |             F: IFunc + marker::Send + 'static,
[INFO] [stderr] 32 | |             T: marker::Send + 'static {
[INFO] [stderr] ...  |
[INFO] [stderr] 66 | |         }
[INFO] [stderr] 67 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/thread/mapping/mod.rs:71:5
[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]     Finished dev [unoptimized + debuginfo] target(s) in 0.46s
[INFO] running `"docker" "inspect" "d43d77f08a53451cc3a8441040c4cfe22f9cc9f08134ff7283706a2f08a04a29"`
[INFO] running `"docker" "rm" "-f" "d43d77f08a53451cc3a8441040c4cfe22f9cc9f08134ff7283706a2f08a04a29"`
[INFO] [stdout] d43d77f08a53451cc3a8441040c4cfe22f9cc9f08134ff7283706a2f08a04a29
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-9/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/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=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" "+1.38.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] ae8cec712e3a1027039599dd9a89276c44a827816eab0839d01b40ab9e541044
[INFO] running `"docker" "start" "-a" "ae8cec712e3a1027039599dd9a89276c44a827816eab0839d01b40ab9e541044"`
[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: consider prefixing with an underscore: `_obj`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` 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: struct is never constructed: `CThread`
[INFO] [stderr]   --> src/thread/mapping/mod.rs:19:1
[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:24:1
[INFO] [stderr]    |
[INFO] [stderr] 24 | struct CThreadPool {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `execute`
[INFO] [stderr]   --> src/thread/mapping/mod.rs:29:5
[INFO] [stderr]    |
[INFO] [stderr] 29 | /     pub fn execute<NC, F, T>(&mut self, key: &str, notFoundCb: NC, callback: F)
[INFO] [stderr] 30 | |         where NC: FnOnce() -> T,
[INFO] [stderr] 31 | |             F: IFunc + marker::Send + 'static,
[INFO] [stderr] 32 | |             T: marker::Send + 'static {
[INFO] [stderr] ...  |
[INFO] [stderr] 66 | |         }
[INFO] [stderr] 67 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/thread/mapping/mod.rs:71:5
[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]     Finished dev [unoptimized + debuginfo] target(s) in 0.40s
[INFO] running `"docker" "inspect" "ae8cec712e3a1027039599dd9a89276c44a827816eab0839d01b40ab9e541044"`
[INFO] running `"docker" "rm" "-f" "ae8cec712e3a1027039599dd9a89276c44a827816eab0839d01b40ab9e541044"`
[INFO] [stdout] ae8cec712e3a1027039599dd9a89276c44a827816eab0839d01b40ab9e541044
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-9/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/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=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" "+1.38.0" "test" "--frozen"`
[INFO] [stdout] 7b169334f62215054bc5d3ad5e078a9b7e056d4792fcf7f659f0957a11818483
[INFO] running `"docker" "start" "-a" "7b169334f62215054bc5d3ad5e078a9b7e056d4792fcf7f659f0957a11818483"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/rust_pool-a893063e84317fc3
[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] [stderr]    Doc-tests rust_pool
[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" "7b169334f62215054bc5d3ad5e078a9b7e056d4792fcf7f659f0957a11818483"`
[INFO] running `"docker" "rm" "-f" "7b169334f62215054bc5d3ad5e078a9b7e056d4792fcf7f659f0957a11818483"`
[INFO] [stdout] 7b169334f62215054bc5d3ad5e078a9b7e056d4792fcf7f659f0957a11818483