[INFO] updating cached repository root-parallax/perceptrons-rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/root-parallax/perceptrons-rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/root-parallax/perceptrons-rust" "work/ex/clippy-test-run/sources/stable/gh/root-parallax/perceptrons-rust"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/root-parallax/perceptrons-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/root-parallax/perceptrons-rust" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/root-parallax/perceptrons-rust"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/root-parallax/perceptrons-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 90175cd3abe2e78b8e21ff1152bb9bc75c7754ed
[INFO] sha for GitHub repo root-parallax/perceptrons-rust: 90175cd3abe2e78b8e21ff1152bb9bc75c7754ed
[INFO] validating manifest of root-parallax/perceptrons-rust 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 root-parallax/perceptrons-rust 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 root-parallax/perceptrons-rust
[INFO] finished frobbing root-parallax/perceptrons-rust
[INFO] frobbed toml for root-parallax/perceptrons-rust written to work/ex/clippy-test-run/sources/stable/gh/root-parallax/perceptrons-rust/Cargo.toml
[INFO] started frobbing root-parallax/perceptrons-rust
[INFO] finished frobbing root-parallax/perceptrons-rust
[INFO] frobbed toml for root-parallax/perceptrons-rust written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/root-parallax/perceptrons-rust/Cargo.toml
[INFO] crate root-parallax/perceptrons-rust 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 root-parallax/perceptrons-rust against stable+rustflags=-Dclippy::into_iter_on_array for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-6/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/root-parallax/perceptrons-rust:/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 -Dclippy::into_iter_on_array" "-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] 7b079e26570de35f9ae95bd3ae19088aa6c0f6c55ff2482d7649bf4d164a9f9f
[INFO] running `"docker" "start" "-a" "7b079e26570de35f9ae95bd3ae19088aa6c0f6c55ff2482d7649bf4d164a9f9f"`
[INFO] [stderr]     Checking rand v0.4.2
[INFO] [stderr]     Checking rand v0.3.22
[INFO] [stderr]     Checking perceptrons v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: casting i8 to f64 may become silently lossy if types change
[INFO] [stderr]   --> src/main.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     input.0 as f64 * weights.0
[INFO] [stderr]    |     ^^^^^^^^^^^^^^ help: try: `f64::from(input.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 i8 to f64 may become silently lossy if types change
[INFO] [stderr]   --> src/main.rs:16:7
[INFO] [stderr]    |
[INFO] [stderr] 16 |     + input.1 as f64 * weights.1
[INFO] [stderr]    |       ^^^^^^^^^^^^^^ help: try: `f64::from(input.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: casting i8 to f64 may become silently lossy if types change
[INFO] [stderr]   --> src/main.rs:17:7
[INFO] [stderr]    |
[INFO] [stderr] 17 |     + input.2 as f64 * weights.2
[INFO] [stderr]    |       ^^^^^^^^^^^^^^ help: try: `f64::from(input.2)`
[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: casting i8 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:105:22
[INFO] [stderr]     |
[INFO] [stderr] 105 |         w.0 += eta * error as f64 * x.0 as f64;
[INFO] [stderr]     |                      ^^^^^^^^^^^^ help: try: `f64::from(error)`
[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: casting i8 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:105:37
[INFO] [stderr]     |
[INFO] [stderr] 105 |         w.0 += eta * error as f64 * x.0 as f64;
[INFO] [stderr]     |                                     ^^^^^^^^^^ help: try: `f64::from(x.0)`
[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: casting i8 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:106:22
[INFO] [stderr]     |
[INFO] [stderr] 106 |         w.1 += eta * error as f64 * x.1 as f64;
[INFO] [stderr]     |                      ^^^^^^^^^^^^ help: try: `f64::from(error)`
[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: casting i8 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:106:37
[INFO] [stderr]     |
[INFO] [stderr] 106 |         w.1 += eta * error as f64 * x.1 as f64;
[INFO] [stderr]     |                                     ^^^^^^^^^^ help: try: `f64::from(x.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: casting i8 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:107:22
[INFO] [stderr]     |
[INFO] [stderr] 107 |         w.2 += eta * error as f64 * x.2 as f64;
[INFO] [stderr]     |                      ^^^^^^^^^^^^ help: try: `f64::from(error)`
[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: casting i8 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:107:37
[INFO] [stderr]     |
[INFO] [stderr] 107 |         w.2 += eta * error as f64 * x.2 as f64;
[INFO] [stderr]     |                                     ^^^^^^^^^^ help: try: `f64::from(x.2)`
[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: casting i8 to f64 may become silently lossy if types change
[INFO] [stderr]   --> src/main.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     input.0 as f64 * weights.0
[INFO] [stderr]    |     ^^^^^^^^^^^^^^ help: try: `f64::from(input.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 i8 to f64 may become silently lossy if types change
[INFO] [stderr]   --> src/main.rs:16:7
[INFO] [stderr]    |
[INFO] [stderr] 16 |     + input.1 as f64 * weights.1
[INFO] [stderr]    |       ^^^^^^^^^^^^^^ help: try: `f64::from(input.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: casting i8 to f64 may become silently lossy if types change
[INFO] [stderr]   --> src/main.rs:17:7
[INFO] [stderr]    |
[INFO] [stderr] 17 |     + input.2 as f64 * weights.2
[INFO] [stderr]    |       ^^^^^^^^^^^^^^ help: try: `f64::from(input.2)`
[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: casting i8 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:105:22
[INFO] [stderr]     |
[INFO] [stderr] 105 |         w.0 += eta * error as f64 * x.0 as f64;
[INFO] [stderr]     |                      ^^^^^^^^^^^^ help: try: `f64::from(error)`
[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: casting i8 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:105:37
[INFO] [stderr]     |
[INFO] [stderr] 105 |         w.0 += eta * error as f64 * x.0 as f64;
[INFO] [stderr]     |                                     ^^^^^^^^^^ help: try: `f64::from(x.0)`
[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: casting i8 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:106:22
[INFO] [stderr]     |
[INFO] [stderr] 106 |         w.1 += eta * error as f64 * x.1 as f64;
[INFO] [stderr]     |                      ^^^^^^^^^^^^ help: try: `f64::from(error)`
[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: casting i8 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:106:37
[INFO] [stderr]     |
[INFO] [stderr] 106 |         w.1 += eta * error as f64 * x.1 as f64;
[INFO] [stderr]     |                                     ^^^^^^^^^^ help: try: `f64::from(x.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: casting i8 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:107:22
[INFO] [stderr]     |
[INFO] [stderr] 107 |         w.2 += eta * error as f64 * x.2 as f64;
[INFO] [stderr]     |                      ^^^^^^^^^^^^ help: try: `f64::from(error)`
[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: casting i8 to f64 may become silently lossy if types change
[INFO] [stderr]    --> src/main.rs:107:37
[INFO] [stderr]     |
[INFO] [stderr] 107 |         w.2 += eta * error as f64 * x.2 as f64;
[INFO] [stderr]     |                                     ^^^^^^^^^^ help: try: `f64::from(x.2)`
[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 3.14s
[INFO] running `"docker" "inspect" "7b079e26570de35f9ae95bd3ae19088aa6c0f6c55ff2482d7649bf4d164a9f9f"`
[INFO] running `"docker" "rm" "-f" "7b079e26570de35f9ae95bd3ae19088aa6c0f6c55ff2482d7649bf4d164a9f9f"`
[INFO] [stdout] 7b079e26570de35f9ae95bd3ae19088aa6c0f6c55ff2482d7649bf4d164a9f9f