[INFO] updating cached repository ctiedt/voronoi
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/ctiedt/voronoi
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/ctiedt/voronoi" "work/ex/beta-1.38-1/sources/1.37.0/gh/ctiedt/voronoi"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/ctiedt/voronoi'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/ctiedt/voronoi" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/ctiedt/voronoi"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/ctiedt/voronoi'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 84073354b4d80b6373ca7261de6a513034e84a0a
[INFO] sha for GitHub repo ctiedt/voronoi: 84073354b4d80b6373ca7261de6a513034e84a0a
[INFO] validating manifest of ctiedt/voronoi 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 ctiedt/voronoi 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 ctiedt/voronoi
[INFO] finished frobbing ctiedt/voronoi
[INFO] frobbed toml for ctiedt/voronoi written to work/ex/beta-1.38-1/sources/1.37.0/gh/ctiedt/voronoi/Cargo.toml
[INFO] started frobbing ctiedt/voronoi
[INFO] finished frobbing ctiedt/voronoi
[INFO] frobbed toml for ctiedt/voronoi written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/ctiedt/voronoi/Cargo.toml
[INFO] crate ctiedt/voronoi 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 ctiedt/voronoi 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-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/ctiedt/voronoi:/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] c123e0f62cf8e3e86b3cee1e9deec8033ddc79781b4e71e8bc7586c69ae0c3d8
[INFO] running `"docker" "start" "-a" "c123e0f62cf8e3e86b3cee1e9deec8033ddc79781b4e71e8bc7586c69ae0c3d8"`
[INFO] [stderr]    Compiling proc-macro2 v0.4.12
[INFO] [stderr]    Compiling quote v0.6.6
[INFO] [stderr]    Compiling syn v0.14.8
[INFO] [stderr]    Compiling num-derive v0.2.2
[INFO] [stderr]    Compiling image v0.19.0
[INFO] [stderr]    Compiling voronoi v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:37:5
[INFO] [stderr]    |
[INFO] [stderr] 37 |     img.save(p);
[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 30.38s
[INFO] running `"docker" "inspect" "c123e0f62cf8e3e86b3cee1e9deec8033ddc79781b4e71e8bc7586c69ae0c3d8"`
[INFO] running `"docker" "rm" "-f" "c123e0f62cf8e3e86b3cee1e9deec8033ddc79781b4e71e8bc7586c69ae0c3d8"`
[INFO] [stdout] c123e0f62cf8e3e86b3cee1e9deec8033ddc79781b4e71e8bc7586c69ae0c3d8
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/ctiedt/voronoi:/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] d271dcd89431f9d3b449f6c5a834e370888a2abb02c8915bd40c8b0a40ec29a2
[INFO] running `"docker" "start" "-a" "d271dcd89431f9d3b449f6c5a834e370888a2abb02c8915bd40c8b0a40ec29a2"`
[INFO] [stderr]    Compiling voronoi v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:37:5
[INFO] [stderr]    |
[INFO] [stderr] 37 |     img.save(p);
[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 1.07s
[INFO] running `"docker" "inspect" "d271dcd89431f9d3b449f6c5a834e370888a2abb02c8915bd40c8b0a40ec29a2"`
[INFO] running `"docker" "rm" "-f" "d271dcd89431f9d3b449f6c5a834e370888a2abb02c8915bd40c8b0a40ec29a2"`
[INFO] [stdout] d271dcd89431f9d3b449f6c5a834e370888a2abb02c8915bd40c8b0a40ec29a2
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/ctiedt/voronoi:/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] d8c945053ccc1e7cb0ae350072910ec6793b638e9f886d384b8fc825b384c1fa
[INFO] running `"docker" "start" "-a" "d8c945053ccc1e7cb0ae350072910ec6793b638e9f886d384b8fc825b384c1fa"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/voronoi-0fabcbce72f92ad7
[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" "d8c945053ccc1e7cb0ae350072910ec6793b638e9f886d384b8fc825b384c1fa"`
[INFO] running `"docker" "rm" "-f" "d8c945053ccc1e7cb0ae350072910ec6793b638e9f886d384b8fc825b384c1fa"`
[INFO] [stdout] d8c945053ccc1e7cb0ae350072910ec6793b638e9f886d384b8fc825b384c1fa