[INFO] updating cached repository upsd/rusty-maths
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/upsd/rusty-maths
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/upsd/rusty-maths" "work/ex/clippy-test-run/sources/stable/gh/upsd/rusty-maths"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/upsd/rusty-maths'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/upsd/rusty-maths" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/upsd/rusty-maths"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/upsd/rusty-maths'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d8afe19cad6d7cf3c28e28b05d5e3deef93fd3f0
[INFO] sha for GitHub repo upsd/rusty-maths: d8afe19cad6d7cf3c28e28b05d5e3deef93fd3f0
[INFO] validating manifest of upsd/rusty-maths 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 upsd/rusty-maths 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 upsd/rusty-maths
[INFO] finished frobbing upsd/rusty-maths
[INFO] frobbed toml for upsd/rusty-maths written to work/ex/clippy-test-run/sources/stable/gh/upsd/rusty-maths/Cargo.toml
[INFO] started frobbing upsd/rusty-maths
[INFO] finished frobbing upsd/rusty-maths
[INFO] frobbed toml for upsd/rusty-maths written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/upsd/rusty-maths/Cargo.toml
[INFO] crate upsd/rusty-maths 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 upsd/rusty-maths 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-4/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/upsd/rusty-maths:/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] 69ac6ada2e943601c1a74e4cd391f6c6137d44c4dba8a6cd3a4e9b9ce5caf3ea
[INFO] running `"docker" "start" "-a" "69ac6ada2e943601c1a74e4cd391f6c6137d44c4dba8a6cd3a4e9b9ce5caf3ea"`
[INFO] [stderr]     Checking rusty_maths v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/rusty_maths.rs:28:5
[INFO] [stderr]    |
[INFO] [stderr] 28 |     return x + y;
[INFO] [stderr]    |     ^^^^^^^^^^^^^ help: remove `return` as shown: `x + y`
[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/rusty_maths.rs:32:5
[INFO] [stderr]    |
[INFO] [stderr] 32 |     return x * y;
[INFO] [stderr]    |     ^^^^^^^^^^^^^ help: remove `return` as shown: `x * y`
[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/rusty_maths.rs:36:5
[INFO] [stderr]    |
[INFO] [stderr] 36 |     return x - y;
[INFO] [stderr]    |     ^^^^^^^^^^^^^ help: remove `return` as shown: `x - y`
[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/rusty_maths.rs:40:5
[INFO] [stderr]    |
[INFO] [stderr] 40 |     return x / y;
[INFO] [stderr]    |     ^^^^^^^^^^^^^ help: remove `return` as shown: `x / y`
[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/rusty_maths.rs:28:5
[INFO] [stderr]    |
[INFO] [stderr] 28 |     return x + y;
[INFO] [stderr]    |     ^^^^^^^^^^^^^ help: remove `return` as shown: `x + y`
[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/rusty_maths.rs:32:5
[INFO] [stderr]    |
[INFO] [stderr] 32 |     return x * y;
[INFO] [stderr]    |     ^^^^^^^^^^^^^ help: remove `return` as shown: `x * y`
[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/rusty_maths.rs:36:5
[INFO] [stderr]    |
[INFO] [stderr] 36 |     return x - y;
[INFO] [stderr]    |     ^^^^^^^^^^^^^ help: remove `return` as shown: `x - y`
[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/rusty_maths.rs:40:5
[INFO] [stderr]    |
[INFO] [stderr] 40 |     return x / y;
[INFO] [stderr]    |     ^^^^^^^^^^^^^ help: remove `return` as shown: `x / y`
[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: casting i32 to f64 may become silently lossy if types change
[INFO] [stderr]  --> src/main.rs:5:38
[INFO] [stderr]   |
[INFO] [stderr] 5 |         let added = rusty_maths::add(x as f64, (x+1) as f64);
[INFO] [stderr]   |                                      ^^^^^^^^ help: try: `f64::from(x)`
[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 i32 to f64 may become silently lossy if types change
[INFO] [stderr]  --> src/main.rs:5:48
[INFO] [stderr]   |
[INFO] [stderr] 5 |         let added = rusty_maths::add(x 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 i32 to f64 may become silently lossy if types change
[INFO] [stderr]  --> src/main.rs:6:48
[INFO] [stderr]   |
[INFO] [stderr] 6 |         let subtracted = rusty_maths::subtract(x as f64, (x+1) as f64);
[INFO] [stderr]   |                                                ^^^^^^^^ help: try: `f64::from(x)`
[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 i32 to f64 may become silently lossy if types change
[INFO] [stderr]  --> src/main.rs:6:58
[INFO] [stderr]   |
[INFO] [stderr] 6 |         let subtracted = rusty_maths::subtract(x 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 i32 to f64 may become silently lossy if types change
[INFO] [stderr]  --> src/main.rs:7:48
[INFO] [stderr]   |
[INFO] [stderr] 7 |         let multiplied = rusty_maths::multiply(x as f64, (x+1) as f64);
[INFO] [stderr]   |                                                ^^^^^^^^ help: try: `f64::from(x)`
[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 i32 to f64 may become silently lossy if types change
[INFO] [stderr]  --> src/main.rs:7:58
[INFO] [stderr]   |
[INFO] [stderr] 7 |         let multiplied = rusty_maths::multiply(x 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 i32 to f64 may become silently lossy if types change
[INFO] [stderr]  --> src/main.rs:8:43
[INFO] [stderr]   |
[INFO] [stderr] 8 |         let divided = rusty_maths::divide(x as f64, (x+1) as f64);
[INFO] [stderr]   |                                           ^^^^^^^^ help: try: `f64::from(x)`
[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 i32 to f64 may become silently lossy if types change
[INFO] [stderr]  --> src/main.rs:8:53
[INFO] [stderr]   |
[INFO] [stderr] 8 |         let divided = rusty_maths::divide(x 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] error: strict comparison of f32 or f64
[INFO] [stderr]  --> src/rusty_maths.rs:8:9
[INFO] [stderr]   |
[INFO] [stderr] 8 |         assert_eq!(4.0, add(2.0, 2.0));
[INFO] [stderr]   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[deny(clippy::float_cmp)] on by default
[INFO] [stderr] note: std::f32::EPSILON and std::f64::EPSILON are available.
[INFO] [stderr]  --> src/rusty_maths.rs:8:9
[INFO] [stderr]   |
[INFO] [stderr] 8 |         assert_eq!(4.0, add(2.0, 2.0));
[INFO] [stderr]   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#float_cmp
[INFO] [stderr]   = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error: strict comparison of f32 or f64
[INFO] [stderr]   --> src/rusty_maths.rs:13:9
[INFO] [stderr]    |
[INFO] [stderr] 13 |         assert_eq!(8.0, multiply(4.0, 2.0));
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr] note: std::f32::EPSILON and std::f64::EPSILON are available.
[INFO] [stderr]   --> src/rusty_maths.rs:13:9
[INFO] [stderr]    |
[INFO] [stderr] 13 |         assert_eq!(8.0, multiply(4.0, 2.0));
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#float_cmp
[INFO] [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error: strict comparison of f32 or f64
[INFO] [stderr]   --> src/rusty_maths.rs:18:9
[INFO] [stderr]    |
[INFO] [stderr] 18 |         assert_eq!(8.0, subtract(10.0, 2.0));
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr] note: std::f32::EPSILON and std::f64::EPSILON are available.
[INFO] [stderr]   --> src/rusty_maths.rs:18:9
[INFO] [stderr]    |
[INFO] [stderr] 18 |         assert_eq!(8.0, subtract(10.0, 2.0));
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#float_cmp
[INFO] [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error: strict comparison of f32 or f64
[INFO] [stderr]   --> src/rusty_maths.rs:23:9
[INFO] [stderr]    |
[INFO] [stderr] 23 |         assert_eq!(50.0, divide(100.0, 2.0));
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr] note: std::f32::EPSILON and std::f64::EPSILON are available.
[INFO] [stderr]   --> src/rusty_maths.rs:23:9
[INFO] [stderr]    |
[INFO] [stderr] 23 |         assert_eq!(50.0, divide(100.0, 2.0));
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#float_cmp
[INFO] [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: casting i32 to f64 may become silently lossy if types change
[INFO] [stderr]  --> src/main.rs:5:38
[INFO] [stderr]   |
[INFO] [stderr] 5 |         let added = rusty_maths::add(x as f64, (x+1) as f64);
[INFO] [stderr]   |                                      ^^^^^^^^ help: try: `f64::from(x)`
[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 i32 to f64 may become silently lossy if types change
[INFO] [stderr]  --> src/main.rs:5:48
[INFO] [stderr]   |
[INFO] [stderr] 5 |         let added = rusty_maths::add(x 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 i32 to f64 may become silently lossy if types change
[INFO] [stderr]  --> src/main.rs:6:48
[INFO] [stderr]   |
[INFO] [stderr] 6 |         let subtracted = rusty_maths::subtract(x as f64, (x+1) as f64);
[INFO] [stderr]   |                                                ^^^^^^^^ help: try: `f64::from(x)`
[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 i32 to f64 may become silently lossy if types change
[INFO] [stderr]  --> src/main.rs:6:58
[INFO] [stderr]   |
[INFO] [stderr] 6 |         let subtracted = rusty_maths::subtract(x 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 i32 to f64 may become silently lossy if types change
[INFO] [stderr]  --> src/main.rs:7:48
[INFO] [stderr]   |
[INFO] [stderr] 7 |         let multiplied = rusty_maths::multiply(x as f64, (x+1) as f64);
[INFO] [stderr]   |                                                ^^^^^^^^ help: try: `f64::from(x)`
[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 i32 to f64 may become silently lossy if types change
[INFO] [stderr]  --> src/main.rs:7:58
[INFO] [stderr]   |
[INFO] [stderr] 7 |         let multiplied = rusty_maths::multiply(x 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 i32 to f64 may become silently lossy if types change
[INFO] [stderr]  --> src/main.rs:8:43
[INFO] [stderr]   |
[INFO] [stderr] 8 |         let divided = rusty_maths::divide(x as f64, (x+1) as f64);
[INFO] [stderr]   |                                           ^^^^^^^^ help: try: `f64::from(x)`
[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 i32 to f64 may become silently lossy if types change
[INFO] [stderr]  --> src/main.rs:8:53
[INFO] [stderr]   |
[INFO] [stderr] 8 |         let divided = rusty_maths::divide(x 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] error: aborting due to 4 previous errors
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `rusty_maths`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "69ac6ada2e943601c1a74e4cd391f6c6137d44c4dba8a6cd3a4e9b9ce5caf3ea"`
[INFO] running `"docker" "rm" "-f" "69ac6ada2e943601c1a74e4cd391f6c6137d44c4dba8a6cd3a4e9b9ce5caf3ea"`
[INFO] [stdout] 69ac6ada2e943601c1a74e4cd391f6c6137d44c4dba8a6cd3a4e9b9ce5caf3ea