[INFO] updating cached repository CKKH/Hello-Universe
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/CKKH/Hello-Universe
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/CKKH/Hello-Universe" "work/ex/beta-1.38-1/sources/1.37.0/gh/CKKH/Hello-Universe"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/CKKH/Hello-Universe'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/CKKH/Hello-Universe" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/CKKH/Hello-Universe"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/CKKH/Hello-Universe'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f2fad4dcc39faf5ce135fdc138826bce524626ba
[INFO] sha for GitHub repo CKKH/Hello-Universe: f2fad4dcc39faf5ce135fdc138826bce524626ba
[INFO] validating manifest of CKKH/Hello-Universe 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 CKKH/Hello-Universe 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 CKKH/Hello-Universe
[INFO] finished frobbing CKKH/Hello-Universe
[INFO] frobbed toml for CKKH/Hello-Universe written to work/ex/beta-1.38-1/sources/1.37.0/gh/CKKH/Hello-Universe/Cargo.toml
[INFO] started frobbing CKKH/Hello-Universe
[INFO] finished frobbing CKKH/Hello-Universe
[INFO] frobbed toml for CKKH/Hello-Universe written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/CKKH/Hello-Universe/Cargo.toml
[INFO] crate CKKH/Hello-Universe 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 CKKH/Hello-Universe 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-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/CKKH/Hello-Universe:/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] b96b423c7d5a33b17157620cc790a3919d7272ffc0c0128d741ae1b4d9970bde
[INFO] running `"docker" "start" "-a" "b96b423c7d5a33b17157620cc790a3919d7272ffc0c0128d741ae1b4d9970bde"`
[INFO] [stderr]    Compiling greeter v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: enum is never used: `Language`
[INFO] [stderr]  --> src/lib.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | enum Language {
[INFO] [stderr]   | ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Greeter`
[INFO] [stderr]  --> src/lib.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | struct Greeter {
[INFO] [stderr]   | ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/lib.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 |     fn new() -> Greeter {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `with_language`
[INFO] [stderr]   --> src/lib.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 |     fn with_language(mut self, language: Language) -> Greeter {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `greet`
[INFO] [stderr]   --> src/lib.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 |     fn greet(self) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.88s
[INFO] running `"docker" "inspect" "b96b423c7d5a33b17157620cc790a3919d7272ffc0c0128d741ae1b4d9970bde"`
[INFO] running `"docker" "rm" "-f" "b96b423c7d5a33b17157620cc790a3919d7272ffc0c0128d741ae1b4d9970bde"`
[INFO] [stdout] b96b423c7d5a33b17157620cc790a3919d7272ffc0c0128d741ae1b4d9970bde
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/CKKH/Hello-Universe:/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] 1df283f0b417c57cf698af0b557fb2d67f1b9ef5ee33570770adf2d21d4f56bd
[INFO] running `"docker" "start" "-a" "1df283f0b417c57cf698af0b557fb2d67f1b9ef5ee33570770adf2d21d4f56bd"`
[INFO] [stderr]    Compiling greeter v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variant is never constructed: `German`
[INFO] [stderr]  --> src/lib.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 |     German,
[INFO] [stderr]   |     ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `with_language`
[INFO] [stderr]   --> src/lib.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 |     fn with_language(mut self, language: Language) -> Greeter {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.05s
[INFO] running `"docker" "inspect" "1df283f0b417c57cf698af0b557fb2d67f1b9ef5ee33570770adf2d21d4f56bd"`
[INFO] running `"docker" "rm" "-f" "1df283f0b417c57cf698af0b557fb2d67f1b9ef5ee33570770adf2d21d4f56bd"`
[INFO] [stdout] 1df283f0b417c57cf698af0b557fb2d67f1b9ef5ee33570770adf2d21d4f56bd
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/CKKH/Hello-Universe:/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] d80479045c96f817bf91f25c6239140e3132eda7ca3d6bccf04d83e4d39b6ca7
[INFO] running `"docker" "start" "-a" "d80479045c96f817bf91f25c6239140e3132eda7ca3d6bccf04d83e4d39b6ca7"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/greeter-b83bcc8647048119
[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]      Running /opt/crater/target/debug/deps/greeter-304ea28f06c8c2a3
[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 greeter
[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" "d80479045c96f817bf91f25c6239140e3132eda7ca3d6bccf04d83e4d39b6ca7"`
[INFO] running `"docker" "rm" "-f" "d80479045c96f817bf91f25c6239140e3132eda7ca3d6bccf04d83e4d39b6ca7"`
[INFO] [stdout] d80479045c96f817bf91f25c6239140e3132eda7ca3d6bccf04d83e4d39b6ca7