[INFO] crate nuban_rust 0.1.1 is already in cache
[INFO] extracting crate nuban_rust 0.1.1 into work/ex/clippy-test-run/sources/stable/reg/nuban_rust/0.1.1
[INFO] extracting crate nuban_rust 0.1.1 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/nuban_rust/0.1.1
[INFO] validating manifest of nuban_rust-0.1.1 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 nuban_rust-0.1.1 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 nuban_rust-0.1.1
[INFO] finished frobbing nuban_rust-0.1.1
[INFO] frobbed toml for nuban_rust-0.1.1 written to work/ex/clippy-test-run/sources/stable/reg/nuban_rust/0.1.1/Cargo.toml
[INFO] started frobbing nuban_rust-0.1.1
[INFO] finished frobbing nuban_rust-0.1.1
[INFO] frobbed toml for nuban_rust-0.1.1 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/nuban_rust/0.1.1/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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 nuban_rust-0.1.1 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-2/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/reg/nuban_rust/0.1.1:/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] 587ed93c40a803d5adbdfa04c985f709abd9bb676185becd46d2ff1419a3ca70
[INFO] running `"docker" "start" "-a" "587ed93c40a803d5adbdfa04c985f709abd9bb676185becd46d2ff1419a3ca70"`
[INFO] [stderr]     Checking nuban_rust v0.1.1 (/opt/crater/workdir)
[INFO] [stderr] warning: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]   --> src/lib.rs:58:9
[INFO] [stderr]    |
[INFO] [stderr] 58 |         full_nuban
[INFO] [stderr]    |         ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::let_and_return)] on by default
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]   --> src/lib.rs:56:13
[INFO] [stderr]    |
[INFO] [stderr] 56 |             self.bank_code.clone() + &self.serial_number.clone() + &self.check_digit().to_string();
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to u32 may become silently lossy if types change
[INFO] [stderr]   --> src/lib.rs:78:15
[INFO] [stderr]    |
[INFO] [stderr] 78 |               * (&self.index(0) + &self.index(2) + &self.index(3) + &self.index(5) + &self.index(6)
[INFO] [stderr]    |  _______________^
[INFO] [stderr] 79 | |                 + &self.index(8) + &self.index(9) + &self.index(11)) as u32;
[INFO] [stderr]    | |___________________________________________________________________________^
[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] help: try
[INFO] [stderr]    |
[INFO] [stderr] 78 |             * u32::from(&self.index(0) + &self.index(2) + &self.index(3) + &self.index(5) + &self.index(6)
[INFO] [stderr] 79 |                 + &self.index(8) + &self.index(9) + &self.index(11));
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: taken reference of right operand
[INFO] [stderr]   --> src/lib.rs:78:15
[INFO] [stderr]    |
[INFO] [stderr] 78 |               * (&self.index(0) + &self.index(2) + &self.index(3) + &self.index(5) + &self.index(6)
[INFO] [stderr]    |  _______________^
[INFO] [stderr] 79 | |                 + &self.index(8) + &self.index(9) + &self.index(11)) as u32;
[INFO] [stderr]    | |_____________________________________________________---------------^
[INFO] [stderr]    |                                                       |
[INFO] [stderr]    |                                                       help: use the right value directly: `self.index(11)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::op_ref)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#op_ref
[INFO] [stderr] 
[INFO] [stderr] warning: taken reference of right operand
[INFO] [stderr]   --> src/lib.rs:78:16
[INFO] [stderr]    |
[INFO] [stderr] 78 |               * (&self.index(0) + &self.index(2) + &self.index(3) + &self.index(5) + &self.index(6)
[INFO] [stderr]    |  ________________^
[INFO] [stderr] 79 | |                 + &self.index(8) + &self.index(9) + &self.index(11)) as u32;
[INFO] [stderr]    | |____________________________________-------------^
[INFO] [stderr]    |                                      |
[INFO] [stderr]    |                                      help: use the right value directly: `self.index(9)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#op_ref
[INFO] [stderr] 
[INFO] [stderr] warning: taken reference of right operand
[INFO] [stderr]   --> src/lib.rs:78:16
[INFO] [stderr]    |
[INFO] [stderr] 78 |               * (&self.index(0) + &self.index(2) + &self.index(3) + &self.index(5) + &self.index(6)
[INFO] [stderr]    |  ________________^
[INFO] [stderr] 79 | |                 + &self.index(8) + &self.index(9) + &self.index(11)) as u32;
[INFO] [stderr]    | |___________________-------------^
[INFO] [stderr]    |                     |
[INFO] [stderr]    |                     help: use the right value directly: `self.index(8)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#op_ref
[INFO] [stderr] 
[INFO] [stderr] warning: taken reference of right operand
[INFO] [stderr]   --> src/lib.rs:78:16
[INFO] [stderr]    |
[INFO] [stderr] 78 |             * (&self.index(0) + &self.index(2) + &self.index(3) + &self.index(5) + &self.index(6)
[INFO] [stderr]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^--------------
[INFO] [stderr]    |                                                                                    |
[INFO] [stderr]    |                                                                                    help: use the right value directly: `self.index(6)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#op_ref
[INFO] [stderr] 
[INFO] [stderr] warning: taken reference of right operand
[INFO] [stderr]   --> src/lib.rs:78:16
[INFO] [stderr]    |
[INFO] [stderr] 78 |             * (&self.index(0) + &self.index(2) + &self.index(3) + &self.index(5) + &self.index(6)
[INFO] [stderr]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^--------------
[INFO] [stderr]    |                                                                   |
[INFO] [stderr]    |                                                                   help: use the right value directly: `self.index(5)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#op_ref
[INFO] [stderr] 
[INFO] [stderr] warning: taken reference of right operand
[INFO] [stderr]   --> src/lib.rs:78:16
[INFO] [stderr]    |
[INFO] [stderr] 78 |             * (&self.index(0) + &self.index(2) + &self.index(3) + &self.index(5) + &self.index(6)
[INFO] [stderr]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^--------------
[INFO] [stderr]    |                                                  |
[INFO] [stderr]    |                                                  help: use the right value directly: `self.index(3)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#op_ref
[INFO] [stderr] 
[INFO] [stderr] warning: needlessly taken reference of both operands
[INFO] [stderr]   --> src/lib.rs:78:16
[INFO] [stderr]    |
[INFO] [stderr] 78 |             * (&self.index(0) + &self.index(2) + &self.index(3) + &self.index(5) + &self.index(6)
[INFO] [stderr]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#op_ref
[INFO] [stderr] help: use the values directly
[INFO] [stderr]    |
[INFO] [stderr] 78 |             * (self.index(0) + self.index(2) + &self.index(3) + &self.index(5) + &self.index(6)
[INFO] [stderr]    |                ^^^^^^^^^^^^^   ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to u32 may become silently lossy if types change
[INFO] [stderr]   --> src/lib.rs:81:20
[INFO] [stderr]    |
[INFO] [stderr] 81 |         sum += 7 * (&self.index(1) + &self.index(4) + &self.index(7) + &self.index(10)) as u32;
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `u32::from(&self.index(1) + &self.index(4) + &self.index(7) + &self.index(10))`
[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: taken reference of right operand
[INFO] [stderr]   --> src/lib.rs:81:20
[INFO] [stderr]    |
[INFO] [stderr] 81 |         sum += 7 * (&self.index(1) + &self.index(4) + &self.index(7) + &self.index(10)) as u32;
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^---------------^
[INFO] [stderr]    |                                                                        |
[INFO] [stderr]    |                                                                        help: use the right value directly: `self.index(10)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#op_ref
[INFO] [stderr] 
[INFO] [stderr] warning: taken reference of right operand
[INFO] [stderr]   --> src/lib.rs:81:21
[INFO] [stderr]    |
[INFO] [stderr] 81 |         sum += 7 * (&self.index(1) + &self.index(4) + &self.index(7) + &self.index(10)) as u32;
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^--------------
[INFO] [stderr]    |                                                       |
[INFO] [stderr]    |                                                       help: use the right value directly: `self.index(7)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#op_ref
[INFO] [stderr] 
[INFO] [stderr] warning: needlessly taken reference of both operands
[INFO] [stderr]   --> src/lib.rs:81:21
[INFO] [stderr]    |
[INFO] [stderr] 81 |         sum += 7 * (&self.index(1) + &self.index(4) + &self.index(7) + &self.index(10)) as u32;
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#op_ref
[INFO] [stderr] help: use the values directly
[INFO] [stderr]    |
[INFO] [stderr] 81 |         sum += 7 * (self.index(1) + self.index(4) + &self.index(7) + &self.index(10)) as u32;
[INFO] [stderr]    |                     ^^^^^^^^^^^^^   ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]   --> src/lib.rs:58:9
[INFO] [stderr]    |
[INFO] [stderr] 58 |         full_nuban
[INFO] [stderr]    |         ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::let_and_return)] on by default
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]   --> src/lib.rs:56:13
[INFO] [stderr]    |
[INFO] [stderr] 56 |             self.bank_code.clone() + &self.serial_number.clone() + &self.check_digit().to_string();
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to u32 may become silently lossy if types change
[INFO] [stderr]   --> src/lib.rs:78:15
[INFO] [stderr]    |
[INFO] [stderr] 78 |               * (&self.index(0) + &self.index(2) + &self.index(3) + &self.index(5) + &self.index(6)
[INFO] [stderr]    |  _______________^
[INFO] [stderr] 79 | |                 + &self.index(8) + &self.index(9) + &self.index(11)) as u32;
[INFO] [stderr]    | |___________________________________________________________________________^
[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] help: try
[INFO] [stderr]    |
[INFO] [stderr] 78 |             * u32::from(&self.index(0) + &self.index(2) + &self.index(3) + &self.index(5) + &self.index(6)
[INFO] [stderr] 79 |                 + &self.index(8) + &self.index(9) + &self.index(11));
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: taken reference of right operand
[INFO] [stderr]   --> src/lib.rs:78:15
[INFO] [stderr]    |
[INFO] [stderr] 78 |               * (&self.index(0) + &self.index(2) + &self.index(3) + &self.index(5) + &self.index(6)
[INFO] [stderr]    |  _______________^
[INFO] [stderr] 79 | |                 + &self.index(8) + &self.index(9) + &self.index(11)) as u32;
[INFO] [stderr]    | |_____________________________________________________---------------^
[INFO] [stderr]    |                                                       |
[INFO] [stderr]    |                                                       help: use the right value directly: `self.index(11)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::op_ref)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#op_ref
[INFO] [stderr] 
[INFO] [stderr] warning: taken reference of right operand
[INFO] [stderr]   --> src/lib.rs:78:16
[INFO] [stderr]    |
[INFO] [stderr] 78 |               * (&self.index(0) + &self.index(2) + &self.index(3) + &self.index(5) + &self.index(6)
[INFO] [stderr]    |  ________________^
[INFO] [stderr] 79 | |                 + &self.index(8) + &self.index(9) + &self.index(11)) as u32;
[INFO] [stderr]    | |____________________________________-------------^
[INFO] [stderr]    |                                      |
[INFO] [stderr]    |                                      help: use the right value directly: `self.index(9)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#op_ref
[INFO] [stderr] 
[INFO] [stderr] warning: taken reference of right operand
[INFO] [stderr]   --> src/lib.rs:78:16
[INFO] [stderr]    |
[INFO] [stderr] 78 |               * (&self.index(0) + &self.index(2) + &self.index(3) + &self.index(5) + &self.index(6)
[INFO] [stderr]    |  ________________^
[INFO] [stderr] 79 | |                 + &self.index(8) + &self.index(9) + &self.index(11)) as u32;
[INFO] [stderr]    | |___________________-------------^
[INFO] [stderr]    |                     |
[INFO] [stderr]    |                     help: use the right value directly: `self.index(8)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#op_ref
[INFO] [stderr] 
[INFO] [stderr] warning: taken reference of right operand
[INFO] [stderr]   --> src/lib.rs:78:16
[INFO] [stderr]    |
[INFO] [stderr] 78 |             * (&self.index(0) + &self.index(2) + &self.index(3) + &self.index(5) + &self.index(6)
[INFO] [stderr]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^--------------
[INFO] [stderr]    |                                                                                    |
[INFO] [stderr]    |                                                                                    help: use the right value directly: `self.index(6)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#op_ref
[INFO] [stderr] 
[INFO] [stderr] warning: taken reference of right operand
[INFO] [stderr]   --> src/lib.rs:78:16
[INFO] [stderr]    |
[INFO] [stderr] 78 |             * (&self.index(0) + &self.index(2) + &self.index(3) + &self.index(5) + &self.index(6)
[INFO] [stderr]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^--------------
[INFO] [stderr]    |                                                                   |
[INFO] [stderr]    |                                                                   help: use the right value directly: `self.index(5)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#op_ref
[INFO] [stderr] 
[INFO] [stderr] warning: taken reference of right operand
[INFO] [stderr]   --> src/lib.rs:78:16
[INFO] [stderr]    |
[INFO] [stderr] 78 |             * (&self.index(0) + &self.index(2) + &self.index(3) + &self.index(5) + &self.index(6)
[INFO] [stderr]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^--------------
[INFO] [stderr]    |                                                  |
[INFO] [stderr]    |                                                  help: use the right value directly: `self.index(3)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#op_ref
[INFO] [stderr] 
[INFO] [stderr] warning: needlessly taken reference of both operands
[INFO] [stderr]   --> src/lib.rs:78:16
[INFO] [stderr]    |
[INFO] [stderr] 78 |             * (&self.index(0) + &self.index(2) + &self.index(3) + &self.index(5) + &self.index(6)
[INFO] [stderr]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#op_ref
[INFO] [stderr] help: use the values directly
[INFO] [stderr]    |
[INFO] [stderr] 78 |             * (self.index(0) + self.index(2) + &self.index(3) + &self.index(5) + &self.index(6)
[INFO] [stderr]    |                ^^^^^^^^^^^^^   ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to u32 may become silently lossy if types change
[INFO] [stderr]   --> src/lib.rs:81:20
[INFO] [stderr]    |
[INFO] [stderr] 81 |         sum += 7 * (&self.index(1) + &self.index(4) + &self.index(7) + &self.index(10)) as u32;
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `u32::from(&self.index(1) + &self.index(4) + &self.index(7) + &self.index(10))`
[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: taken reference of right operand
[INFO] [stderr]   --> src/lib.rs:81:20
[INFO] [stderr]    |
[INFO] [stderr] 81 |         sum += 7 * (&self.index(1) + &self.index(4) + &self.index(7) + &self.index(10)) as u32;
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^---------------^
[INFO] [stderr]    |                                                                        |
[INFO] [stderr]    |                                                                        help: use the right value directly: `self.index(10)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#op_ref
[INFO] [stderr] 
[INFO] [stderr] warning: taken reference of right operand
[INFO] [stderr]   --> src/lib.rs:81:21
[INFO] [stderr]    |
[INFO] [stderr] 81 |         sum += 7 * (&self.index(1) + &self.index(4) + &self.index(7) + &self.index(10)) as u32;
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^--------------
[INFO] [stderr]    |                                                       |
[INFO] [stderr]    |                                                       help: use the right value directly: `self.index(7)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#op_ref
[INFO] [stderr] 
[INFO] [stderr] warning: needlessly taken reference of both operands
[INFO] [stderr]   --> src/lib.rs:81:21
[INFO] [stderr]    |
[INFO] [stderr] 81 |         sum += 7 * (&self.index(1) + &self.index(4) + &self.index(7) + &self.index(10)) as u32;
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#op_ref
[INFO] [stderr] help: use the values directly
[INFO] [stderr]    |
[INFO] [stderr] 81 |         sum += 7 * (self.index(1) + self.index(4) + &self.index(7) + &self.index(10)) as u32;
[INFO] [stderr]    |                     ^^^^^^^^^^^^^   ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.88s
[INFO] running `"docker" "inspect" "587ed93c40a803d5adbdfa04c985f709abd9bb676185becd46d2ff1419a3ca70"`
[INFO] running `"docker" "rm" "-f" "587ed93c40a803d5adbdfa04c985f709abd9bb676185becd46d2ff1419a3ca70"`
[INFO] [stdout] 587ed93c40a803d5adbdfa04c985f709abd9bb676185becd46d2ff1419a3ca70