[INFO] updating cached repository yabirgb/lowpoly
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/yabirgb/lowpoly
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/yabirgb/lowpoly" "work/ex/beta-1.38-1/sources/1.37.0/gh/yabirgb/lowpoly"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/yabirgb/lowpoly'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/yabirgb/lowpoly" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/yabirgb/lowpoly"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/yabirgb/lowpoly'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 24d15b1f8b0bd7e14d65d41dfaba9fa3ef66d556
[INFO] sha for GitHub repo yabirgb/lowpoly: 24d15b1f8b0bd7e14d65d41dfaba9fa3ef66d556
[INFO] validating manifest of yabirgb/lowpoly 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 yabirgb/lowpoly 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 yabirgb/lowpoly
[INFO] finished frobbing yabirgb/lowpoly
[INFO] frobbed toml for yabirgb/lowpoly written to work/ex/beta-1.38-1/sources/1.37.0/gh/yabirgb/lowpoly/Cargo.toml
[INFO] started frobbing yabirgb/lowpoly
[INFO] finished frobbing yabirgb/lowpoly
[INFO] frobbed toml for yabirgb/lowpoly written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/yabirgb/lowpoly/Cargo.toml
[INFO] crate yabirgb/lowpoly 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 yabirgb/lowpoly 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-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/yabirgb/lowpoly:/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] 1380ce12239c4c07d86b49f8abe44bd89f75175bec3217d9242306746e24fc96
[INFO] running `"docker" "start" "-a" "1380ce12239c4c07d86b49f8abe44bd89f75175bec3217d9242306746e24fc96"`
[INFO] [stderr]    Compiling syn v0.15.29
[INFO] [stderr]    Compiling either v1.5.1
[INFO] [stderr]    Compiling num-complex v0.2.1
[INFO] [stderr]    Compiling safe-transmute v0.10.1
[INFO] [stderr]    Compiling custom_derive v0.1.7
[INFO] [stderr]    Compiling crossbeam-utils v0.2.2
[INFO] [stderr]    Compiling num_cpus v1.10.0
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling approx v0.3.2
[INFO] [stderr]    Compiling ordered-float v1.0.2
[INFO] [stderr]    Compiling rtriangulate v0.3.1
[INFO] [stderr]    Compiling conv v0.3.3
[INFO] [stderr]    Compiling num-bigint v0.2.2
[INFO] [stderr]    Compiling itertools v0.7.11
[INFO] [stderr]    Compiling crossbeam-epoch v0.3.1
[INFO] [stderr]    Compiling png v0.14.0
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling rusttype v0.7.5
[INFO] [stderr]    Compiling crossbeam-deque v0.2.0
[INFO] [stderr]    Compiling rayon-core v1.4.1
[INFO] [stderr]    Compiling num-rational v0.2.1
[INFO] [stderr]    Compiling rayon v1.0.3
[INFO] [stderr]    Compiling num v0.2.0
[INFO] [stderr]    Compiling num-derive v0.2.4
[INFO] [stderr]    Compiling jpeg-decoder v0.1.15
[INFO] [stderr]    Compiling tiff v0.2.2
[INFO] [stderr]    Compiling image v0.21.0
[INFO] [stderr]    Compiling imageproc v0.18.0
[INFO] [stderr]    Compiling edge-detection v0.2.3
[INFO] [stderr]    Compiling lowpoly v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:138:9
[INFO] [stderr]     |
[INFO] [stderr] 138 |     let mut result = RgbImage::new(detection.width() as u32, detection.height() as u32);
[INFO] [stderr]     |         ----^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/main.rs:141:5
[INFO] [stderr]     |
[INFO] [stderr] 141 |     image_result.save(path);
[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 1m 17s
[INFO] running `"docker" "inspect" "1380ce12239c4c07d86b49f8abe44bd89f75175bec3217d9242306746e24fc96"`
[INFO] running `"docker" "rm" "-f" "1380ce12239c4c07d86b49f8abe44bd89f75175bec3217d9242306746e24fc96"`
[INFO] [stdout] 1380ce12239c4c07d86b49f8abe44bd89f75175bec3217d9242306746e24fc96
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/yabirgb/lowpoly:/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] c90bc40b7301f90b37ca5420eb6e062085af0b2219aed3eb1e90fd90b99fd40d
[INFO] running `"docker" "start" "-a" "c90bc40b7301f90b37ca5420eb6e062085af0b2219aed3eb1e90fd90b99fd40d"`
[INFO] [stderr]    Compiling lowpoly v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:138:9
[INFO] [stderr]     |
[INFO] [stderr] 138 |     let mut result = RgbImage::new(detection.width() as u32, detection.height() as u32);
[INFO] [stderr]     |         ----^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/main.rs:141:5
[INFO] [stderr]     |
[INFO] [stderr] 141 |     image_result.save(path);
[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 1.20s
[INFO] running `"docker" "inspect" "c90bc40b7301f90b37ca5420eb6e062085af0b2219aed3eb1e90fd90b99fd40d"`
[INFO] running `"docker" "rm" "-f" "c90bc40b7301f90b37ca5420eb6e062085af0b2219aed3eb1e90fd90b99fd40d"`
[INFO] [stdout] c90bc40b7301f90b37ca5420eb6e062085af0b2219aed3eb1e90fd90b99fd40d
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/yabirgb/lowpoly:/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] be9343ac2b83914b9d900af3afb9be7596f90505353c84154cfe5ba4d9a57a47
[INFO] running `"docker" "start" "-a" "be9343ac2b83914b9d900af3afb9be7596f90505353c84154cfe5ba4d9a57a47"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.10s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/lowpoly-14cdfe9f96275236
[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" "be9343ac2b83914b9d900af3afb9be7596f90505353c84154cfe5ba4d9a57a47"`
[INFO] running `"docker" "rm" "-f" "be9343ac2b83914b9d900af3afb9be7596f90505353c84154cfe5ba4d9a57a47"`
[INFO] [stdout] be9343ac2b83914b9d900af3afb9be7596f90505353c84154cfe5ba4d9a57a47