[INFO] updating cached repository https://github.com/dominikbraun/threadpool
[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] becd6789ab227729f28a4deaf052ecf037dd5693
[INFO] testing dominikbraun/threadpool against beta-2019-09-28 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdominikbraun%2Fthreadpool" "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/dominikbraun/threadpool on toolchain beta-2019-09-28
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/dominikbraun/threadpool
[INFO] finished tweaking git repo https://github.com/dominikbraun/threadpool
[INFO] tweaked toml for git repo https://github.com/dominikbraun/threadpool written to work/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/dominikbraun/threadpool already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-7/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" "+beta-2019-09-28" "build" "--frozen"`
[INFO] [stdout] 16fd8149b423e18c9426c7aebd6925c80057e260d67be905466428cd67d6bebd
[INFO] running `"docker" "start" "-a" "16fd8149b423e18c9426c7aebd6925c80057e260d67be905466428cd67d6bebd"`
[INFO] [stderr]    Compiling threadpool v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `subjects`
[INFO] [stderr]   --> src/lib.rs:12:32
[INFO] [stderr]    |
[INFO] [stderr] 12 |     fn run<T: Resource>(&self, subjects: &[T], f: fn(T) -> T) {}
[INFO] [stderr]    |                                ^^^^^^^^ help: consider prefixing with an underscore: `_subjects`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `f`
[INFO] [stderr]   --> src/lib.rs:12:48
[INFO] [stderr]    |
[INFO] [stderr] 12 |     fn run<T: Resource>(&self, subjects: &[T], f: fn(T) -> T) {}
[INFO] [stderr]    |                                                ^ help: consider prefixing with an underscore: `_f`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `custom`
[INFO] [stderr]   --> src/lib.rs:23:23
[INFO] [stderr]    |
[INFO] [stderr] 23 |     fn process(&self, custom: fn(T) -> T) {}
[INFO] [stderr]    |                       ^^^^^^ help: consider prefixing with an underscore: `_custom`
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Pool`
[INFO] [stderr]  --> src/lib.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | struct Pool {
[INFO] [stderr]   | ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `run`
[INFO] [stderr]   --> src/lib.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     fn run<T: Resource>(&self, subjects: &[T], f: fn(T) -> T) {}
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `push_jobs`
[INFO] [stderr]   --> src/lib.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     fn push_jobs(&self) {}
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `spawn`
[INFO] [stderr]   --> src/lib.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     fn spawn(&self) {}
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `join`
[INFO] [stderr]   --> src/lib.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     fn join(&self) {}
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Worker`
[INFO] [stderr]   --> src/lib.rs:18:1
[INFO] [stderr]    |
[INFO] [stderr] 18 | struct Worker<T: Resource> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `process`
[INFO] [stderr]   --> src/lib.rs:23:5
[INFO] [stderr]    |
[INFO] [stderr] 23 |     fn process(&self, custom: fn(T) -> T) {}
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.30s
[INFO] running `"docker" "inspect" "16fd8149b423e18c9426c7aebd6925c80057e260d67be905466428cd67d6bebd"`
[INFO] running `"docker" "rm" "-f" "16fd8149b423e18c9426c7aebd6925c80057e260d67be905466428cd67d6bebd"`
[INFO] [stdout] 16fd8149b423e18c9426c7aebd6925c80057e260d67be905466428cd67d6bebd
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-7/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" "+beta-2019-09-28" "test" "--frozen" "--no-run"`
[INFO] [stdout] 418ddd131cbf70e263c4f6a38b611f59db8f0ec3988d21ae51b72115d3261677
[INFO] running `"docker" "start" "-a" "418ddd131cbf70e263c4f6a38b611f59db8f0ec3988d21ae51b72115d3261677"`
[INFO] [stderr]    Compiling threadpool v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `subjects`
[INFO] [stderr]   --> src/lib.rs:12:32
[INFO] [stderr]    |
[INFO] [stderr] 12 |     fn run<T: Resource>(&self, subjects: &[T], f: fn(T) -> T) {}
[INFO] [stderr]    |                                ^^^^^^^^ help: consider prefixing with an underscore: `_subjects`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `f`
[INFO] [stderr]   --> src/lib.rs:12:48
[INFO] [stderr]    |
[INFO] [stderr] 12 |     fn run<T: Resource>(&self, subjects: &[T], f: fn(T) -> T) {}
[INFO] [stderr]    |                                                ^ help: consider prefixing with an underscore: `_f`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `custom`
[INFO] [stderr]   --> src/lib.rs:23:23
[INFO] [stderr]    |
[INFO] [stderr] 23 |     fn process(&self, custom: fn(T) -> T) {}
[INFO] [stderr]    |                       ^^^^^^ help: consider prefixing with an underscore: `_custom`
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Pool`
[INFO] [stderr]  --> src/lib.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | struct Pool {
[INFO] [stderr]   | ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `run`
[INFO] [stderr]   --> src/lib.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     fn run<T: Resource>(&self, subjects: &[T], f: fn(T) -> T) {}
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `push_jobs`
[INFO] [stderr]   --> src/lib.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     fn push_jobs(&self) {}
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `spawn`
[INFO] [stderr]   --> src/lib.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     fn spawn(&self) {}
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `join`
[INFO] [stderr]   --> src/lib.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     fn join(&self) {}
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Worker`
[INFO] [stderr]   --> src/lib.rs:18:1
[INFO] [stderr]    |
[INFO] [stderr] 18 | struct Worker<T: Resource> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `process`
[INFO] [stderr]   --> src/lib.rs:23:5
[INFO] [stderr]    |
[INFO] [stderr] 23 |     fn process(&self, custom: fn(T) -> T) {}
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.35s
[INFO] running `"docker" "inspect" "418ddd131cbf70e263c4f6a38b611f59db8f0ec3988d21ae51b72115d3261677"`
[INFO] running `"docker" "rm" "-f" "418ddd131cbf70e263c4f6a38b611f59db8f0ec3988d21ae51b72115d3261677"`
[INFO] [stdout] 418ddd131cbf70e263c4f6a38b611f59db8f0ec3988d21ae51b72115d3261677
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-7/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" "+beta-2019-09-28" "test" "--frozen"`
[INFO] [stdout] ede5fae6fd585d2a26c11689eea67fec6febcda73e4d5844eef605fbc26caa50
[INFO] running `"docker" "start" "-a" "ede5fae6fd585d2a26c11689eea67fec6febcda73e4d5844eef605fbc26caa50"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/threadpool-4554b9e1ea0fbfc7
[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] [stderr]    Doc-tests threadpool
[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" "ede5fae6fd585d2a26c11689eea67fec6febcda73e4d5844eef605fbc26caa50"`
[INFO] running `"docker" "rm" "-f" "ede5fae6fd585d2a26c11689eea67fec6febcda73e4d5844eef605fbc26caa50"`
[INFO] [stdout] ede5fae6fd585d2a26c11689eea67fec6febcda73e4d5844eef605fbc26caa50