[INFO] updating cached repository drozdziak1/mandeldraw
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/drozdziak1/mandeldraw
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/drozdziak1/mandeldraw" "work/ex/beta-1.37-6/sources/1.36.0/gh/drozdziak1/mandeldraw"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/drozdziak1/mandeldraw'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/drozdziak1/mandeldraw" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/drozdziak1/mandeldraw"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/drozdziak1/mandeldraw'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 74583f14d53a095583c5c0290e5e81699b5fd967
[INFO] sha for GitHub repo drozdziak1/mandeldraw: 74583f14d53a095583c5c0290e5e81699b5fd967
[INFO] validating manifest of drozdziak1/mandeldraw 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 drozdziak1/mandeldraw 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 drozdziak1/mandeldraw
[INFO] finished frobbing drozdziak1/mandeldraw
[INFO] frobbed toml for drozdziak1/mandeldraw written to work/ex/beta-1.37-6/sources/1.36.0/gh/drozdziak1/mandeldraw/Cargo.toml
[INFO] started frobbing drozdziak1/mandeldraw
[INFO] finished frobbing drozdziak1/mandeldraw
[INFO] frobbed toml for drozdziak1/mandeldraw written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/drozdziak1/mandeldraw/Cargo.toml
[INFO] crate drozdziak1/mandeldraw 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] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing drozdziak1/mandeldraw 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-3/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/drozdziak1/mandeldraw:/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] 3e367aa240827718e4d547eee085047498e4738dad68102e9b659b5cd3f6d3c2
[INFO] running `"docker" "start" "-a" "3e367aa240827718e4d547eee085047498e4738dad68102e9b659b5cd3f6d3c2"`
[INFO] [stderr]    Compiling num-complex v0.1.42
[INFO] [stderr]    Compiling crossbeam-epoch v0.3.0
[INFO] [stderr]    Compiling num-iter v0.1.35
[INFO] [stderr]    Compiling num-rational v0.1.42
[INFO] [stderr]    Compiling enum_primitive v0.1.1
[INFO] [stderr]    Compiling docopt v0.8.3
[INFO] [stderr]    Compiling png v0.11.0
[INFO] [stderr]    Compiling crossbeam-deque v0.2.0
[INFO] [stderr]    Compiling rayon-core v1.4.0
[INFO] [stderr]    Compiling rayon v1.0.0
[INFO] [stderr]    Compiling jpeg-decoder v0.1.14
[INFO] [stderr]    Compiling image v0.18.0
[INFO] [stderr]    Compiling mandeldraw v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:125:13
[INFO] [stderr]     |
[INFO] [stderr] 125 |         let mut normalized = (pixel.data[0] - *min) as f64 / (*max - *min) as f64 * MAX_LUMA as f64;
[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]     Finished dev [unoptimized + debuginfo] target(s) in 40.61s
[INFO] running `"docker" "inspect" "3e367aa240827718e4d547eee085047498e4738dad68102e9b659b5cd3f6d3c2"`
[INFO] running `"docker" "rm" "-f" "3e367aa240827718e4d547eee085047498e4738dad68102e9b659b5cd3f6d3c2"`
[INFO] [stdout] 3e367aa240827718e4d547eee085047498e4738dad68102e9b659b5cd3f6d3c2
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/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/drozdziak1/mandeldraw:/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] 5affd490116d61d09cf0535d14e8fa02ab57d442dce022ab727d7a938bfb628b
[INFO] running `"docker" "start" "-a" "5affd490116d61d09cf0535d14e8fa02ab57d442dce022ab727d7a938bfb628b"`
[INFO] [stderr]    Compiling mandeldraw v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:125:13
[INFO] [stderr]     |
[INFO] [stderr] 125 |         let mut normalized = (pixel.data[0] - *min) as f64 / (*max - *min) as f64 * MAX_LUMA as f64;
[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]     Finished dev [unoptimized + debuginfo] target(s) in 1.53s
[INFO] running `"docker" "inspect" "5affd490116d61d09cf0535d14e8fa02ab57d442dce022ab727d7a938bfb628b"`
[INFO] running `"docker" "rm" "-f" "5affd490116d61d09cf0535d14e8fa02ab57d442dce022ab727d7a938bfb628b"`
[INFO] [stdout] 5affd490116d61d09cf0535d14e8fa02ab57d442dce022ab727d7a938bfb628b
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/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/drozdziak1/mandeldraw:/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] 3682461b695b0f132a83f5adf774b7afb61f6bc60a58cac073697c8c61884f7b
[INFO] running `"docker" "start" "-a" "3682461b695b0f132a83f5adf774b7afb61f6bc60a58cac073697c8c61884f7b"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.09s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/mandeldraw-9330829202ab904e
[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" "3682461b695b0f132a83f5adf774b7afb61f6bc60a58cac073697c8c61884f7b"`
[INFO] running `"docker" "rm" "-f" "3682461b695b0f132a83f5adf774b7afb61f6bc60a58cac073697c8c61884f7b"`
[INFO] [stdout] 3682461b695b0f132a83f5adf774b7afb61f6bc60a58cac073697c8c61884f7b