[INFO] updating cached repository MwlLj/rust-pool
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/MwlLj/rust-pool
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/MwlLj/rust-pool" "work/ex/beta-1.38-1/sources/1.37.0/gh/MwlLj/rust-pool"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/MwlLj/rust-pool'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/MwlLj/rust-pool" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/MwlLj/rust-pool"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/MwlLj/rust-pool'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] b0eebad8e241817116472c4a1baec22c7b5133cc
[INFO] sha for GitHub repo MwlLj/rust-pool: b0eebad8e241817116472c4a1baec22c7b5133cc
[INFO] validating manifest of MwlLj/rust-pool on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of MwlLj/rust-pool on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing MwlLj/rust-pool
[INFO] finished frobbing MwlLj/rust-pool
[INFO] frobbed toml for MwlLj/rust-pool written to work/ex/beta-1.38-1/sources/1.37.0/gh/MwlLj/rust-pool/Cargo.toml
[INFO] started frobbing MwlLj/rust-pool
[INFO] finished frobbing MwlLj/rust-pool
[INFO] frobbed toml for MwlLj/rust-pool written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/MwlLj/rust-pool/Cargo.toml
[INFO] crate MwlLj/rust-pool already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing MwlLj/rust-pool against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/MwlLj/rust-pool:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 52056210dd3616479549ac84190d6d5389e6871d4419be4befc3e6e8b5003f29
[INFO] running `"docker" "start" "-a" "52056210dd3616479549ac84190d6d5389e6871d4419be4befc3e6e8b5003f29"`
[INFO] [stderr]    Compiling rust_pool v0.1.0 (/opt/crater/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]     Finished dev [unoptimized + debuginfo] target(s) in 1.31s
[INFO] running `"docker" "inspect" "52056210dd3616479549ac84190d6d5389e6871d4419be4befc3e6e8b5003f29"`
[INFO] running `"docker" "rm" "-f" "52056210dd3616479549ac84190d6d5389e6871d4419be4befc3e6e8b5003f29"`
[INFO] [stdout] 52056210dd3616479549ac84190d6d5389e6871d4419be4befc3e6e8b5003f29
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/MwlLj/rust-pool:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 1e017ee0a4cc2b74db62b75d6489a648988445f3b62d7db300ce3e5f402a73a6
[INFO] running `"docker" "start" "-a" "1e017ee0a4cc2b74db62b75d6489a648988445f3b62d7db300ce3e5f402a73a6"`
[INFO] [stderr]    Compiling rust_pool v0.1.0 (/opt/crater/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]     Finished dev [unoptimized + debuginfo] target(s) in 0.91s
[INFO] running `"docker" "inspect" "1e017ee0a4cc2b74db62b75d6489a648988445f3b62d7db300ce3e5f402a73a6"`
[INFO] running `"docker" "rm" "-f" "1e017ee0a4cc2b74db62b75d6489a648988445f3b62d7db300ce3e5f402a73a6"`
[INFO] [stdout] 1e017ee0a4cc2b74db62b75d6489a648988445f3b62d7db300ce3e5f402a73a6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/MwlLj/rust-pool:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] aafc4d11e51e59fe959bd50474356e32c10f5cfc597e0f2d869903ce39028d7d
[INFO] running `"docker" "start" "-a" "aafc4d11e51e59fe959bd50474356e32c10f5cfc597e0f2d869903ce39028d7d"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rust_pool-786af9aa9f589ca1
[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" "aafc4d11e51e59fe959bd50474356e32c10f5cfc597e0f2d869903ce39028d7d"`
[INFO] running `"docker" "rm" "-f" "aafc4d11e51e59fe959bd50474356e32c10f5cfc597e0f2d869903ce39028d7d"`
[INFO] [stdout] aafc4d11e51e59fe959bd50474356e32c10f5cfc597e0f2d869903ce39028d7d