[INFO] updating cached repository tlowry/rust-ai-samples
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/tlowry/rust-ai-samples
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/tlowry/rust-ai-samples" "work/ex/clippy-test-run/sources/stable/gh/tlowry/rust-ai-samples"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/tlowry/rust-ai-samples'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/tlowry/rust-ai-samples" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/tlowry/rust-ai-samples"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/tlowry/rust-ai-samples'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e68bc84e4549e25e0dab70ae1eb33626ebc7aab2
[INFO] sha for GitHub repo tlowry/rust-ai-samples: e68bc84e4549e25e0dab70ae1eb33626ebc7aab2
[INFO] validating manifest of tlowry/rust-ai-samples 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 tlowry/rust-ai-samples 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 tlowry/rust-ai-samples
[INFO] finished frobbing tlowry/rust-ai-samples
[INFO] frobbed toml for tlowry/rust-ai-samples written to work/ex/clippy-test-run/sources/stable/gh/tlowry/rust-ai-samples/Cargo.toml
[INFO] started frobbing tlowry/rust-ai-samples
[INFO] finished frobbing tlowry/rust-ai-samples
[INFO] frobbed toml for tlowry/rust-ai-samples written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/tlowry/rust-ai-samples/Cargo.toml
[INFO] crate tlowry/rust-ai-samples 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 tlowry/rust-ai-samples against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-4/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/tlowry/rust-ai-samples:/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] 1fddf38b58e84c41500444cf9371c063f9eae3e981d48208381c7a53026f8df7
[INFO] running `"docker" "start" "-a" "1fddf38b58e84c41500444cf9371c063f9eae3e981d48208381c7a53026f8df7"`
[INFO] [stderr]    Compiling num-traits v0.1.41
[INFO] [stderr]    Compiling cfg-if v0.1.2
[INFO] [stderr]     Checking bitflags v0.6.0
[INFO] [stderr]     Checking piston-float v0.2.0
[INFO] [stderr]     Checking inflate v0.1.1
[INFO] [stderr]     Checking shader_version v0.2.2
[INFO] [stderr]     Checking read_color v0.1.0
[INFO] [stderr]     Checking piston-texture v0.5.0
[INFO] [stderr]    Compiling num-complex v0.2.1
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[INFO] [stderr]    Compiling ndarray v0.12.0
[INFO] [stderr]    Compiling miniz-sys v0.1.10
[INFO] [stderr]     Checking num_cpus v1.8.0
[INFO] [stderr]     Checking time v0.1.39
[INFO] [stderr]     Checking itertools v0.7.8
[INFO] [stderr]    Compiling x11-dl v2.17.2
[INFO] [stderr]     Checking shared_library v0.1.8
[INFO] [stderr]     Checking draw_state v0.6.0
[INFO] [stderr]    Compiling log v0.4.1
[INFO] [stderr]     Checking piston-viewport v0.2.0
[INFO] [stderr]     Checking vecmath v0.2.0
[INFO] [stderr]    Compiling phf_generator v0.7.21
[INFO] [stderr]    Compiling wayland-scanner v0.5.11
[INFO] [stderr]     Checking tempfile v2.2.0
[INFO] [stderr]     Checking rayon-core v1.3.0
[INFO] [stderr]    Compiling serde_json v0.9.10
[INFO] [stderr]     Checking osmesa-sys v0.1.2
[INFO] [stderr]     Checking num-integer v0.1.35
[INFO] [stderr]     Checking enum_primitive v0.1.1
[INFO] [stderr]     Checking pistoncore-input v0.14.0
[INFO] [stderr]    Compiling phf_codegen v0.7.21
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]     Checking gfx_core v0.4.0
[INFO] [stderr]     Checking piston2d-graphics v0.17.3
[INFO] [stderr]     Checking fs2 v0.2.5
[INFO] [stderr]     Checking num-iter v0.1.34
[INFO] [stderr]     Checking num-bigint v0.1.41
[INFO] [stderr]    Compiling target_build_utils v0.3.1
[INFO] [stderr]     Checking rayon v0.8.2
[INFO] [stderr]    Compiling wayland-client v0.5.12
[INFO] [stderr]     Checking flate2 v0.2.20
[INFO] [stderr]    Compiling gl_generator v0.5.5
[INFO] [stderr]    Compiling gl_generator v0.6.1
[INFO] [stderr]     Checking memmap v0.2.3
[INFO] [stderr]     Checking pistoncore-window v0.22.1
[INFO] [stderr]     Checking png v0.5.2
[INFO] [stderr]     Checking num-rational v0.1.40
[INFO] [stderr]    Compiling gl v0.6.5
[INFO] [stderr]    Compiling gfx_gl v0.3.1
[INFO] [stderr]    Compiling glutin v0.6.2
[INFO] [stderr]     Checking pistoncore-event_loop v0.25.1
[INFO] [stderr]     Checking jpeg-decoder v0.1.13
[INFO] [stderr]     Checking piston v0.25.1
[INFO] [stderr]     Checking image v0.10.4
[INFO] [stderr]    Compiling libloading v0.3.4
[INFO] [stderr]     Checking dlib v0.3.1
[INFO] [stderr]     Checking wayland-sys v0.5.11
[INFO] [stderr]     Checking gfx v0.12.2
[INFO] [stderr]     Checking gfx_device_gl v0.11.2
[INFO] [stderr]     Checking wayland-window v0.2.3
[INFO] [stderr]     Checking wayland-kbd v0.3.6
[INFO] [stderr]     Checking piston-gfx_texture v0.17.0
[INFO] [stderr]     Checking piston2d-gfx_graphics v0.31.2
[INFO] [stderr]     Checking pistoncore-glutin_window v0.29.0
[INFO] [stderr]     Checking piston_window v0.52.0
[INFO] [stderr]     Checking dataplotlib v0.1.3
[INFO] [stderr]     Checking rust-ai-samples v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/main.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 |     return 1.0 / (1.0 + E.powf(-input));
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `1.0 / (1.0 + E.powf(-input))`
[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: unneeded return statement
[INFO] [stderr]   --> src/main.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 |     return 1.0 / (1.0 + E.powf(-input));
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `1.0 / (1.0 + E.powf(-input))`
[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: unneeded return statement
[INFO] [stderr]   --> src/main.rs:31:5
[INFO] [stderr]    |
[INFO] [stderr] 31 |     return  input.tanh();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `input.tanh()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/main.rs:31:5
[INFO] [stderr]    |
[INFO] [stderr] 31 |     return  input.tanh();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `input.tanh()`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `sigmoid`
[INFO] [stderr]   --> src/main.rs:25:1
[INFO] [stderr]    |
[INFO] [stderr] 25 | fn sigmoid(input: f64) -> f64 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `sigmoid`
[INFO] [stderr]   --> src/main.rs:25:1
[INFO] [stderr]    |
[INFO] [stderr] 25 | fn sigmoid(input: f64) -> f64 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]   --> src/main.rs:35:12
[INFO] [stderr]    |
[INFO] [stderr] 35 | fn draw(x: &Vec<f64>, f: &Fn(f64) -> f64) {
[INFO] [stderr]    |            ^^^^^^^^^ help: change this to: `&[f64]`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::ptr_arg)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&Vec<_>` instead of `&[_]` involves one more reference and cannot be used with non-Vec-based slices.
[INFO] [stderr]   --> src/main.rs:35:12
[INFO] [stderr]    |
[INFO] [stderr] 35 | fn draw(x: &Vec<f64>, f: &Fn(f64) -> f64) {
[INFO] [stderr]    |            ^^^^^^^^^ help: change this to: `&[f64]`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::ptr_arg)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 23s
[INFO] running `"docker" "inspect" "1fddf38b58e84c41500444cf9371c063f9eae3e981d48208381c7a53026f8df7"`
[INFO] running `"docker" "rm" "-f" "1fddf38b58e84c41500444cf9371c063f9eae3e981d48208381c7a53026f8df7"`
[INFO] [stdout] 1fddf38b58e84c41500444cf9371c063f9eae3e981d48208381c7a53026f8df7