[INFO] updating cached repository sebui/fractal-tree
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/sebui/fractal-tree
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/sebui/fractal-tree" "work/ex/clippy-test-run/sources/stable/gh/sebui/fractal-tree"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/sebui/fractal-tree'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/sebui/fractal-tree" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/sebui/fractal-tree"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/sebui/fractal-tree'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 90d9e63d6e7829321805cbdd6c7aa9b58ce021ca
[INFO] sha for GitHub repo sebui/fractal-tree: 90d9e63d6e7829321805cbdd6c7aa9b58ce021ca
[INFO] validating manifest of sebui/fractal-tree on toolchain stable
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of sebui/fractal-tree on toolchain stable+rustflags=-Dclippy::into_iter_on_array
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing sebui/fractal-tree
[INFO] finished frobbing sebui/fractal-tree
[INFO] frobbed toml for sebui/fractal-tree written to work/ex/clippy-test-run/sources/stable/gh/sebui/fractal-tree/Cargo.toml
[INFO] started frobbing sebui/fractal-tree
[INFO] finished frobbing sebui/fractal-tree
[INFO] frobbed toml for sebui/fractal-tree written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/sebui/fractal-tree/Cargo.toml
[INFO] crate sebui/fractal-tree has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] linting sebui/fractal-tree against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-5/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/sebui/fractal-tree:/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=forbid" "-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" "+stable" "clippy" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] fa19c6feddc36029c07207ec349e051fafc4743c5a97426169d36c683b01e246
[INFO] running `"docker" "start" "-a" "fa19c6feddc36029c07207ec349e051fafc4743c5a97426169d36c683b01e246"`
[INFO] [stderr]    Compiling siphasher v0.2.1
[INFO] [stderr]     Checking num-rational v0.1.36
[INFO] [stderr]     Checking gfx_core v0.6.0
[INFO] [stderr]     Checking pistoncore-input v0.17.1
[INFO] [stderr]     Checking arrayvec v0.3.20
[INFO] [stderr]    Compiling gfx_gl v0.3.1
[INFO] [stderr]     Checking png v0.6.2
[INFO] [stderr]    Compiling phf_shared v0.7.21
[INFO] [stderr]    Compiling phf_generator v0.7.21
[INFO] [stderr]    Compiling phf v0.7.21
[INFO] [stderr]     Checking rusttype v0.2.1
[INFO] [stderr]    Compiling phf_codegen v0.7.21
[INFO] [stderr]     Checking image v0.12.3
[INFO] [stderr]    Compiling target_build_utils v0.3.0
[INFO] [stderr]     Checking pistoncore-window v0.26.2
[INFO] [stderr]     Checking pistoncore-event_loop v0.31.4
[INFO] [stderr]     Checking piston v0.31.4
[INFO] [stderr]    Compiling libloading v0.3.2
[INFO] [stderr]     Checking dlib v0.3.1
[INFO] [stderr]     Checking wayland-sys v0.7.8
[INFO] [stderr]     Checking wayland-client v0.7.8
[INFO] [stderr]     Checking wayland-kbd v0.6.3
[INFO] [stderr]     Checking wayland-window v0.4.4
[INFO] [stderr]     Checking winit v0.5.11
[INFO] [stderr]     Checking glutin v0.7.4
[INFO] [stderr]     Checking pistoncore-glutin_window v0.35.1
[INFO] [stderr]     Checking gfx v0.14.1
[INFO] [stderr]     Checking gfx_device_gl v0.13.0
[INFO] [stderr]     Checking piston-gfx_texture v0.22.1
[INFO] [stderr]     Checking piston2d-gfx_graphics v0.38.0
[INFO] [stderr]     Checking piston_window v0.64.0
[INFO] [stderr]     Checking piston-fractal-tree v1.0.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/main.rs:67:5
[INFO] [stderr]    |
[INFO] [stderr] 67 |     return branch;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^ help: remove `return` as shown: `branch`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::needless_return)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: casting u32 to f64 may become silently lossy if types change
[INFO] [stderr]   --> src/main.rs:27:9
[INFO] [stderr]    |
[INFO] [stderr] 27 |         WINDOW_SIZE[0] as f64 / 2.0,
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^ help: try: `f64::from(WINDOW_SIZE[0])`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::cast_lossless)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u32 to f64 may become silently lossy if types change
[INFO] [stderr]   --> src/main.rs:28:9
[INFO] [stderr]    |
[INFO] [stderr] 28 |         WINDOW_SIZE[1] as f64 - 200.0
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^ help: try: `f64::from(WINDOW_SIZE[1])`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/main.rs:67:5
[INFO] [stderr]    |
[INFO] [stderr] 67 |     return branch;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^ help: remove `return` as shown: `branch`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::needless_return)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: casting u32 to f64 may become silently lossy if types change
[INFO] [stderr]   --> src/main.rs:27:9
[INFO] [stderr]    |
[INFO] [stderr] 27 |         WINDOW_SIZE[0] as f64 / 2.0,
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^ help: try: `f64::from(WINDOW_SIZE[0])`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::cast_lossless)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u32 to f64 may become silently lossy if types change
[INFO] [stderr]   --> src/main.rs:28:9
[INFO] [stderr]    |
[INFO] [stderr] 28 |         WINDOW_SIZE[1] as f64 - 200.0
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^ help: try: `f64::from(WINDOW_SIZE[1])`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 42.92s
[INFO] running `"docker" "inspect" "fa19c6feddc36029c07207ec349e051fafc4743c5a97426169d36c683b01e246"`
[INFO] running `"docker" "rm" "-f" "fa19c6feddc36029c07207ec349e051fafc4743c5a97426169d36c683b01e246"`
[INFO] [stdout] fa19c6feddc36029c07207ec349e051fafc4743c5a97426169d36c683b01e246