[INFO] updating cached repository https://github.com/robinhad/learning-rust
[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] a4ad6af16826148dac01649bf0466ebf5bddfdad
[INFO] testing robinhad/learning-rust against beta-2019-09-28 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Frobinhad%2Flearning-rust" "work/builds/worker-2/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/robinhad/learning-rust 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/robinhad/learning-rust
[INFO] finished tweaking git repo https://github.com/robinhad/learning-rust
[INFO] tweaked toml for git repo https://github.com/robinhad/learning-rust written to work/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/robinhad/learning-rust 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-2/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-2/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] aa7f2bb03d61a29002a638480b413168557f57350f19b809d7d3f5c04fecf818
[INFO] running `"docker" "start" "-a" "aa7f2bb03d61a29002a638480b413168557f57350f19b809d7d3f5c04fecf818"`
[INFO] [stderr]    Compiling learning-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: function is never used: `second_word`
[INFO] [stderr]   --> src/main.rs:20:1
[INFO] [stderr]    |
[INFO] [stderr] 20 | fn second_word(s: &String) -> &str {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.86s
[INFO] running `"docker" "inspect" "aa7f2bb03d61a29002a638480b413168557f57350f19b809d7d3f5c04fecf818"`
[INFO] running `"docker" "rm" "-f" "aa7f2bb03d61a29002a638480b413168557f57350f19b809d7d3f5c04fecf818"`
[INFO] [stdout] aa7f2bb03d61a29002a638480b413168557f57350f19b809d7d3f5c04fecf818
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-2/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] e9aee79b2311ef1928dbb88c6559055adb513f75a51ffc4f86c9d456697b34b4
[INFO] running `"docker" "start" "-a" "e9aee79b2311ef1928dbb88c6559055adb513f75a51ffc4f86c9d456697b34b4"`
[INFO] [stderr]    Compiling learning-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: function is never used: `second_word`
[INFO] [stderr]   --> src/main.rs:20:1
[INFO] [stderr]    |
[INFO] [stderr] 20 | fn second_word(s: &String) -> &str {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.47s
[INFO] running `"docker" "inspect" "e9aee79b2311ef1928dbb88c6559055adb513f75a51ffc4f86c9d456697b34b4"`
[INFO] running `"docker" "rm" "-f" "e9aee79b2311ef1928dbb88c6559055adb513f75a51ffc4f86c9d456697b34b4"`
[INFO] [stdout] e9aee79b2311ef1928dbb88c6559055adb513f75a51ffc4f86c9d456697b34b4
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-2/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] 0755dc4db7073d87b3e41ef5ad8da5b42c2fcb9cb80c3da4d1ea751b773a2b8c
[INFO] running `"docker" "start" "-a" "0755dc4db7073d87b3e41ef5ad8da5b42c2fcb9cb80c3da4d1ea751b773a2b8c"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/learning_rust-9f3eeeccc8ffdefa
[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" "0755dc4db7073d87b3e41ef5ad8da5b42c2fcb9cb80c3da4d1ea751b773a2b8c"`
[INFO] running `"docker" "rm" "-f" "0755dc4db7073d87b3e41ef5ad8da5b42c2fcb9cb80c3da4d1ea751b773a2b8c"`
[INFO] [stdout] 0755dc4db7073d87b3e41ef5ad8da5b42c2fcb9cb80c3da4d1ea751b773a2b8c