[INFO] updating cached repository dermesser/numerical-oscillator
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/dermesser/numerical-oscillator
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/dermesser/numerical-oscillator" "work/ex/beta-1.37-6/sources/1.36.0/gh/dermesser/numerical-oscillator"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/dermesser/numerical-oscillator'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/dermesser/numerical-oscillator" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/dermesser/numerical-oscillator"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/dermesser/numerical-oscillator'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 492fd41ab11bbd71130d345fcb9cb81d06154086
[INFO] sha for GitHub repo dermesser/numerical-oscillator: 492fd41ab11bbd71130d345fcb9cb81d06154086
[INFO] validating manifest of dermesser/numerical-oscillator on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of dermesser/numerical-oscillator on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing dermesser/numerical-oscillator
[INFO] finished frobbing dermesser/numerical-oscillator
[INFO] frobbed toml for dermesser/numerical-oscillator written to work/ex/beta-1.37-6/sources/1.36.0/gh/dermesser/numerical-oscillator/Cargo.toml
[INFO] started frobbing dermesser/numerical-oscillator
[INFO] finished frobbing dermesser/numerical-oscillator
[INFO] frobbed toml for dermesser/numerical-oscillator written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/dermesser/numerical-oscillator/Cargo.toml
[INFO] crate dermesser/numerical-oscillator already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing dermesser/numerical-oscillator against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-5/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/dermesser/numerical-oscillator:/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-2019-07-23" "build" "--frozen"`
[INFO] [stdout] ce1b8c6e379743d69b9a5c366f492e486ebc3779427b5edf005013462ce59086
[INFO] running `"docker" "start" "-a" "ce1b8c6e379743d69b9a5c366f492e486ebc3779427b5edf005013462ce59086"`
[INFO] [stderr]    Compiling gnuplot v0.0.27
[INFO] [stderr]    Compiling termion v1.5.1
[INFO] [stderr]    Compiling numerical v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/main.rs:287:9
[INFO] [stderr]     |
[INFO] [stderr] 287 |         io::stdout().flush();
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.33s
[INFO] running `"docker" "inspect" "ce1b8c6e379743d69b9a5c366f492e486ebc3779427b5edf005013462ce59086"`
[INFO] running `"docker" "rm" "-f" "ce1b8c6e379743d69b9a5c366f492e486ebc3779427b5edf005013462ce59086"`
[INFO] [stdout] ce1b8c6e379743d69b9a5c366f492e486ebc3779427b5edf005013462ce59086
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-5/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/dermesser/numerical-oscillator:/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-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] 54a8ae64367834c61798cd00bc67d05a9a3352cabdaa39a6a63460058ce2788a
[INFO] running `"docker" "start" "-a" "54a8ae64367834c61798cd00bc67d05a9a3352cabdaa39a6a63460058ce2788a"`
[INFO] [stderr]    Compiling numerical v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/main.rs:287:9
[INFO] [stderr]     |
[INFO] [stderr] 287 |         io::stdout().flush();
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.86s
[INFO] running `"docker" "inspect" "54a8ae64367834c61798cd00bc67d05a9a3352cabdaa39a6a63460058ce2788a"`
[INFO] running `"docker" "rm" "-f" "54a8ae64367834c61798cd00bc67d05a9a3352cabdaa39a6a63460058ce2788a"`
[INFO] [stdout] 54a8ae64367834c61798cd00bc67d05a9a3352cabdaa39a6a63460058ce2788a
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-5/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/dermesser/numerical-oscillator:/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-2019-07-23" "test" "--frozen"`
[INFO] [stdout] 1424984d2ae84ebbbc312656e1f4061eed9cff75d61b9a3ab9575b3a93757d73
[INFO] running `"docker" "start" "-a" "1424984d2ae84ebbbc312656e1f4061eed9cff75d61b9a3ab9575b3a93757d73"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/numerical-898b50f8a4b524e5
[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" "1424984d2ae84ebbbc312656e1f4061eed9cff75d61b9a3ab9575b3a93757d73"`
[INFO] running `"docker" "rm" "-f" "1424984d2ae84ebbbc312656e1f4061eed9cff75d61b9a3ab9575b3a93757d73"`
[INFO] [stdout] 1424984d2ae84ebbbc312656e1f4061eed9cff75d61b9a3ab9575b3a93757d73