[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-1.38-1/sources/1.37.0/gh/drozdziak1/mandeldraw"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/drozdziak1/mandeldraw'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/drozdziak1/mandeldraw" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/drozdziak1/mandeldraw"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/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 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of drozdziak1/mandeldraw 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 drozdziak1/mandeldraw
[INFO] finished frobbing drozdziak1/mandeldraw
[INFO] frobbed toml for drozdziak1/mandeldraw written to work/ex/beta-1.38-1/sources/1.37.0/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-1.38-1/sources/beta-2019-08-13/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" "+1.37.0" "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 drozdziak1/mandeldraw 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/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 25cad7fe24c38a899ffe9641637f758326db5dfeb133ccb52cd2b2f80203368d
[INFO] running `"docker" "start" "-a" "25cad7fe24c38a899ffe9641637f758326db5dfeb133ccb52cd2b2f80203368d"`
[INFO] [stderr]    Compiling num-traits v0.2.0
[INFO] [stderr]    Compiling rand v0.4.2
[INFO] [stderr]    Compiling crossbeam-epoch v0.3.0
[INFO] [stderr]    Compiling docopt v0.8.3
[INFO] [stderr]    Compiling crossbeam-deque v0.2.0
[INFO] [stderr]    Compiling num-integer v0.1.36
[INFO] [stderr]    Compiling num-traits v0.1.43
[INFO] [stderr]    Compiling num-complex v0.1.42
[INFO] [stderr]    Compiling enum_primitive v0.1.1
[INFO] [stderr]    Compiling num-iter v0.1.35
[INFO] [stderr]    Compiling num-rational v0.1.42
[INFO] [stderr]    Compiling rayon-core v1.4.0
[INFO] [stderr]    Compiling png v0.11.0
[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 44.70s
[INFO] running `"docker" "inspect" "25cad7fe24c38a899ffe9641637f758326db5dfeb133ccb52cd2b2f80203368d"`
[INFO] running `"docker" "rm" "-f" "25cad7fe24c38a899ffe9641637f758326db5dfeb133ccb52cd2b2f80203368d"`
[INFO] [stdout] 25cad7fe24c38a899ffe9641637f758326db5dfeb133ccb52cd2b2f80203368d
[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/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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] adaa3d7ad3979fdfaba29f6ebd85ad5ac2f67e294574fbc06730ab9b61cebd55
[INFO] running `"docker" "start" "-a" "adaa3d7ad3979fdfaba29f6ebd85ad5ac2f67e294574fbc06730ab9b61cebd55"`
[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 1.14s
[INFO] running `"docker" "inspect" "adaa3d7ad3979fdfaba29f6ebd85ad5ac2f67e294574fbc06730ab9b61cebd55"`
[INFO] running `"docker" "rm" "-f" "adaa3d7ad3979fdfaba29f6ebd85ad5ac2f67e294574fbc06730ab9b61cebd55"`
[INFO] [stdout] adaa3d7ad3979fdfaba29f6ebd85ad5ac2f67e294574fbc06730ab9b61cebd55
[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/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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] ba12d02b824c4c03103d9d569f69374c82c4ac0cc19b92c7e1624950fee29247
[INFO] running `"docker" "start" "-a" "ba12d02b824c4c03103d9d569f69374c82c4ac0cc19b92c7e1624950fee29247"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.09s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/mandeldraw-a2dba770daa91183
[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" "ba12d02b824c4c03103d9d569f69374c82c4ac0cc19b92c7e1624950fee29247"`
[INFO] running `"docker" "rm" "-f" "ba12d02b824c4c03103d9d569f69374c82c4ac0cc19b92c7e1624950fee29247"`
[INFO] [stdout] ba12d02b824c4c03103d9d569f69374c82c4ac0cc19b92c7e1624950fee29247