[INFO] updating cached repository https://github.com/jetilling/rust_example
[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] 106a724b5d32b447596d357d17c3d46fe3a872a7
[INFO] testing jetilling/rust_example against beta-2019-09-28 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjetilling%2Frust_example" "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/jetilling/rust_example 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/jetilling/rust_example
[INFO] finished tweaking git repo https://github.com/jetilling/rust_example
[INFO] tweaked toml for git repo https://github.com/jetilling/rust_example written to work/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/jetilling/rust_example 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] fbe43d9919d722f0687f5c5a6d574d7c922b8161c6de6f7baecfffa76f1a55be
[INFO] running `"docker" "start" "-a" "fbe43d9919d722f0687f5c5a6d574d7c922b8161c6de6f7baecfffa76f1a55be"`
[INFO] [stderr]    Compiling rust_example_app v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `f`
[INFO] [stderr]   --> src/lib.rs:29:28
[INFO] [stderr]    |
[INFO] [stderr] 29 |   pub fn execute<F>(&self, f: F)
[INFO] [stderr]    |                            ^ help: consider prefixing with an underscore: `_f`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `workers`
[INFO] [stderr]  --> src/lib.rs:4:3
[INFO] [stderr]   |
[INFO] [stderr] 4 |   workers: Vec<Worker>
[INFO] [stderr]   |   ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `id`
[INFO] [stderr]   --> src/lib.rs:38:3
[INFO] [stderr]    |
[INFO] [stderr] 38 |   id: usize,
[INFO] [stderr]    |   ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `thread`
[INFO] [stderr]   --> src/lib.rs:39:3
[INFO] [stderr]    |
[INFO] [stderr] 39 |   thread: thread::JoinHandle<()>,
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.90s
[INFO] running `"docker" "inspect" "fbe43d9919d722f0687f5c5a6d574d7c922b8161c6de6f7baecfffa76f1a55be"`
[INFO] running `"docker" "rm" "-f" "fbe43d9919d722f0687f5c5a6d574d7c922b8161c6de6f7baecfffa76f1a55be"`
[INFO] [stdout] fbe43d9919d722f0687f5c5a6d574d7c922b8161c6de6f7baecfffa76f1a55be
[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] 5d5547e2ff3efa9f4111a468b3bc764d31236486eddd5cac8028de0206ec1ff3
[INFO] running `"docker" "start" "-a" "5d5547e2ff3efa9f4111a468b3bc764d31236486eddd5cac8028de0206ec1ff3"`
[INFO] [stderr]    Compiling rust_example_app v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `f`
[INFO] [stderr]   --> src/lib.rs:29:28
[INFO] [stderr]    |
[INFO] [stderr] 29 |   pub fn execute<F>(&self, f: F)
[INFO] [stderr]    |                            ^ help: consider prefixing with an underscore: `_f`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `workers`
[INFO] [stderr]  --> src/lib.rs:4:3
[INFO] [stderr]   |
[INFO] [stderr] 4 |   workers: Vec<Worker>
[INFO] [stderr]   |   ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `id`
[INFO] [stderr]   --> src/lib.rs:38:3
[INFO] [stderr]    |
[INFO] [stderr] 38 |   id: usize,
[INFO] [stderr]    |   ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `thread`
[INFO] [stderr]   --> src/lib.rs:39:3
[INFO] [stderr]    |
[INFO] [stderr] 39 |   thread: thread::JoinHandle<()>,
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.50s
[INFO] running `"docker" "inspect" "5d5547e2ff3efa9f4111a468b3bc764d31236486eddd5cac8028de0206ec1ff3"`
[INFO] running `"docker" "rm" "-f" "5d5547e2ff3efa9f4111a468b3bc764d31236486eddd5cac8028de0206ec1ff3"`
[INFO] [stdout] 5d5547e2ff3efa9f4111a468b3bc764d31236486eddd5cac8028de0206ec1ff3
[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] d42ec76c3e8dc6756aeb60ab3ee24c58d0ed2419bed3b2f9736faa8bfc62c243
[INFO] running `"docker" "start" "-a" "d42ec76c3e8dc6756aeb60ab3ee24c58d0ed2419bed3b2f9736faa8bfc62c243"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/rust_example_app-d67701bbdf5739d2
[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]      Running /opt/rustwide/target/debug/deps/main-5bb7c9012b90098a
[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 rust_example_app
[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" "d42ec76c3e8dc6756aeb60ab3ee24c58d0ed2419bed3b2f9736faa8bfc62c243"`
[INFO] running `"docker" "rm" "-f" "d42ec76c3e8dc6756aeb60ab3ee24c58d0ed2419bed3b2f9736faa8bfc62c243"`
[INFO] [stdout] d42ec76c3e8dc6756aeb60ab3ee24c58d0ed2419bed3b2f9736faa8bfc62c243