[INFO] updating cached repository jonimake/rust-settings-test
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/jonimake/rust-settings-test
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/jonimake/rust-settings-test" "work/ex/beta-1.38-1/sources/1.37.0/gh/jonimake/rust-settings-test"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/jonimake/rust-settings-test'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/jonimake/rust-settings-test" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jonimake/rust-settings-test"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jonimake/rust-settings-test'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 304c97e4cbf26ce8001bf5b6649ff24c808a78fd
[INFO] sha for GitHub repo jonimake/rust-settings-test: 304c97e4cbf26ce8001bf5b6649ff24c808a78fd
[INFO] validating manifest of jonimake/rust-settings-test 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 jonimake/rust-settings-test 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 jonimake/rust-settings-test
[INFO] finished frobbing jonimake/rust-settings-test
[INFO] frobbed toml for jonimake/rust-settings-test written to work/ex/beta-1.38-1/sources/1.37.0/gh/jonimake/rust-settings-test/Cargo.toml
[INFO] started frobbing jonimake/rust-settings-test
[INFO] finished frobbing jonimake/rust-settings-test
[INFO] frobbed toml for jonimake/rust-settings-test written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jonimake/rust-settings-test/Cargo.toml
[INFO] crate jonimake/rust-settings-test 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing jonimake/rust-settings-test against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jonimake/rust-settings-test:/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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] afcc5cc9047375f666e11f1850b6ea4440b162f13f5ff5fcd6f218a2d7266ed3
[INFO] running `"docker" "start" "-a" "afcc5cc9047375f666e11f1850b6ea4440b162f13f5ff5fcd6f218a2d7266ed3"`
[INFO] [stderr]    Compiling libc v0.2.45
[INFO] [stderr]    Compiling rust-ini v0.12.2
[INFO] [stderr]    Compiling toml v0.4.10
[INFO] [stderr]    Compiling serde_json v1.0.34
[INFO] [stderr]    Compiling memchr v2.1.2
[INFO] [stderr]    Compiling aho-corasick v0.6.9
[INFO] [stderr]    Compiling nom v4.1.1
[INFO] [stderr]    Compiling regex v1.1.0
[INFO] [stderr]    Compiling serde-hjson v0.8.2
[INFO] [stderr]    Compiling config v0.9.1
[INFO] [stderr]    Compiling rust-setting-test v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `config_file`
[INFO] [stderr]  --> src/main.rs:4:9
[INFO] [stderr]   |
[INFO] [stderr] 4 |     let config_file = config::File::with_name("Settings");
[INFO] [stderr]   |         ^^^^^^^^^^^ help: consider prefixing with an underscore: `_config_file`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 29.17s
[INFO] running `"docker" "inspect" "afcc5cc9047375f666e11f1850b6ea4440b162f13f5ff5fcd6f218a2d7266ed3"`
[INFO] running `"docker" "rm" "-f" "afcc5cc9047375f666e11f1850b6ea4440b162f13f5ff5fcd6f218a2d7266ed3"`
[INFO] [stdout] afcc5cc9047375f666e11f1850b6ea4440b162f13f5ff5fcd6f218a2d7266ed3
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jonimake/rust-settings-test:/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" "+beta-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] eeb743ee0357f3d313d0c7416d47fe81335d241f4c9b519bf598a7024190570f
[INFO] running `"docker" "start" "-a" "eeb743ee0357f3d313d0c7416d47fe81335d241f4c9b519bf598a7024190570f"`
[INFO] [stderr]    Compiling rust-setting-test v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `config_file`
[INFO] [stderr]  --> src/main.rs:4:9
[INFO] [stderr]   |
[INFO] [stderr] 4 |     let config_file = config::File::with_name("Settings");
[INFO] [stderr]   |         ^^^^^^^^^^^ help: consider prefixing with an underscore: `_config_file`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.86s
[INFO] running `"docker" "inspect" "eeb743ee0357f3d313d0c7416d47fe81335d241f4c9b519bf598a7024190570f"`
[INFO] running `"docker" "rm" "-f" "eeb743ee0357f3d313d0c7416d47fe81335d241f4c9b519bf598a7024190570f"`
[INFO] [stdout] eeb743ee0357f3d313d0c7416d47fe81335d241f4c9b519bf598a7024190570f
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jonimake/rust-settings-test:/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" "+beta-2019-08-13" "test" "--frozen"`
[INFO] [stdout] e87535fa87495f85d666476a9e8997d7c6d65b278bbb771a1b7ed54d9b87f9e9
[INFO] running `"docker" "start" "-a" "e87535fa87495f85d666476a9e8997d7c6d65b278bbb771a1b7ed54d9b87f9e9"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rust_setting_test-9c4ce4a6ebac11b0
[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" "e87535fa87495f85d666476a9e8997d7c6d65b278bbb771a1b7ed54d9b87f9e9"`
[INFO] running `"docker" "rm" "-f" "e87535fa87495f85d666476a9e8997d7c6d65b278bbb771a1b7ed54d9b87f9e9"`
[INFO] [stdout] e87535fa87495f85d666476a9e8997d7c6d65b278bbb771a1b7ed54d9b87f9e9