[INFO] cloning repository https://github.com/UnePatate5010/Rust-Daily-Programmer
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/UnePatate5010/Rust-Daily-Programmer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FUnePatate5010%2FRust-Daily-Programmer", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FUnePatate5010%2FRust-Daily-Programmer'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0219124bfffba6619539a1db4ef68fe94af5a0e4
[INFO] linting UnePatate5010/Rust-Daily-Programmer against nightly for clippy-nonminimal_bool-denied
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FUnePatate5010%2FRust-Daily-Programmer" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/UnePatate5010/Rust-Daily-Programmer
[INFO] finished tweaking git repo https://github.com/UnePatate5010/Rust-Daily-Programmer
[INFO] tweaked toml for git repo https://github.com/UnePatate5010/Rust-Daily-Programmer written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/UnePatate5010/Rust-Daily-Programmer on toolchain nightly
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/UnePatate5010/Rust-Daily-Programmer already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+nightly" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2dfc566fb08cbeffec18c8aa0bb4c000689da313591ff0cf7b8914c98cf92dc4
[INFO] running `Command { std: "docker" "start" "-a" "2dfc566fb08cbeffec18c8aa0bb4c000689da313591ff0cf7b8914c98cf92dc4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2dfc566fb08cbeffec18c8aa0bb4c000689da313591ff0cf7b8914c98cf92dc4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2dfc566fb08cbeffec18c8aa0bb4c000689da313591ff0cf7b8914c98cf92dc4", kill_on_drop: false }`
[INFO] [stdout] 2dfc566fb08cbeffec18c8aa0bb4c000689da313591ff0cf7b8914c98cf92dc4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+nightly" "clippy" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 82c6e00b6dff381233978317dd00646c19c8edaaaf6a53a8b7d69b3941ad2ee5
[INFO] running `Command { std: "docker" "start" "-a" "82c6e00b6dff381233978317dd00646c19c8edaaaf6a53a8b7d69b3941ad2ee5", kill_on_drop: false }`
[INFO] [stderr]     Checking dailyprogrammer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: used `assert_eq!` with a literal bool
[INFO] [stdout]  --> src/tests/t_roman_numeral_comparison.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     assert_eq!(roman_numeral_comparison::numcompare("XVI", "VIII"), false);
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bool_assert_comparison
[INFO] [stdout]   = note: `#[warn(clippy::bool_assert_comparison)]` on by default
[INFO] [stdout] help: replace it with `assert!(..)`
[INFO] [stdout]   |
[INFO] [stdout] 5 -     assert_eq!(roman_numeral_comparison::numcompare("XVI", "VIII"), false);
[INFO] [stdout] 5 +     assert!(!roman_numeral_comparison::numcompare("XVI", "VIII"));
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: used `assert_eq!` with a literal bool
[INFO] [stdout]  --> src/tests/t_roman_numeral_comparison.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     assert_eq!(roman_numeral_comparison::numcompare("V", "IIIII"), false);
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bool_assert_comparison
[INFO] [stdout] help: replace it with `assert!(..)`
[INFO] [stdout]   |
[INFO] [stdout] 6 -     assert_eq!(roman_numeral_comparison::numcompare("V", "IIIII"), false);
[INFO] [stdout] 6 +     assert!(!roman_numeral_comparison::numcompare("V", "IIIII"));
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: used `assert_eq!` with a literal bool
[INFO] [stdout]  --> src/tests/t_roman_numeral_comparison.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     assert_eq!(roman_numeral_comparison::numcompare("CCLXV", "MMDII"), true);
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bool_assert_comparison
[INFO] [stdout] help: replace it with `assert!(..)`
[INFO] [stdout]   |
[INFO] [stdout] 7 -     assert_eq!(roman_numeral_comparison::numcompare("CCLXV", "MMDII"), true);
[INFO] [stdout] 7 +     assert!(roman_numeral_comparison::numcompare("CCLXV", "MMDII"));
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: used `assert_eq!` with a literal bool
[INFO] [stdout]  --> src/tests/t_reverse_factorial.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     assert_eq!(reverse_factorial::reverse_factorial(150), false);
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bool_assert_comparison
[INFO] [stdout] help: replace it with `assert!(..)`
[INFO] [stdout]   |
[INFO] [stdout] 5 -     assert_eq!(reverse_factorial::reverse_factorial(150), false);
[INFO] [stdout] 5 +     assert!(!reverse_factorial::reverse_factorial(150));
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: used `assert_eq!` with a literal bool
[INFO] [stdout]  --> src/tests/t_reverse_factorial.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     assert_eq!(reverse_factorial::reverse_factorial(120), true);
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bool_assert_comparison
[INFO] [stdout] help: replace it with `assert!(..)`
[INFO] [stdout]   |
[INFO] [stdout] 6 -     assert_eq!(reverse_factorial::reverse_factorial(120), true);
[INFO] [stdout] 6 +     assert!(reverse_factorial::reverse_factorial(120));
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: used `assert_eq!` with a literal bool
[INFO] [stdout]  --> src/tests/t_iec_rule.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     assert_eq!(iec_rule::iec_rule("a"), true);
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bool_assert_comparison
[INFO] [stdout] help: replace it with `assert!(..)`
[INFO] [stdout]   |
[INFO] [stdout] 5 -     assert_eq!(iec_rule::iec_rule("a"), true);
[INFO] [stdout] 5 +     assert!(iec_rule::iec_rule("a"));
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: used `assert_eq!` with a literal bool
[INFO] [stdout]  --> src/tests/t_iec_rule.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     assert_eq!(iec_rule::iec_rule("zombie"), true);
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bool_assert_comparison
[INFO] [stdout] help: replace it with `assert!(..)`
[INFO] [stdout]   |
[INFO] [stdout] 6 -     assert_eq!(iec_rule::iec_rule("zombie"), true);
[INFO] [stdout] 6 +     assert!(iec_rule::iec_rule("zombie"));
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: used `assert_eq!` with a literal bool
[INFO] [stdout]  --> src/tests/t_iec_rule.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     assert_eq!(iec_rule::iec_rule("transceiver"), true);
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bool_assert_comparison
[INFO] [stdout] help: replace it with `assert!(..)`
[INFO] [stdout]   |
[INFO] [stdout] 7 -     assert_eq!(iec_rule::iec_rule("transceiver"), true);
[INFO] [stdout] 7 +     assert!(iec_rule::iec_rule("transceiver"));
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: used `assert_eq!` with a literal bool
[INFO] [stdout]  --> src/tests/t_iec_rule.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     assert_eq!(iec_rule::iec_rule("veil"), false);
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bool_assert_comparison
[INFO] [stdout] help: replace it with `assert!(..)`
[INFO] [stdout]   |
[INFO] [stdout] 8 -     assert_eq!(iec_rule::iec_rule("veil"), false);
[INFO] [stdout] 8 +     assert!(!iec_rule::iec_rule("veil"));
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: used `assert_eq!` with a literal bool
[INFO] [stdout]  --> src/tests/t_iec_rule.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     assert_eq!(iec_rule::iec_rule("icier"), false);
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bool_assert_comparison
[INFO] [stdout] help: replace it with `assert!(..)`
[INFO] [stdout]   |
[INFO] [stdout] 9 -     assert_eq!(iec_rule::iec_rule("icier"), false);
[INFO] [stdout] 9 +     assert!(!iec_rule::iec_rule("icier"));
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/exercises/roman_numeral_comparison.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     return sum;
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout]    = note: `#[warn(clippy::needless_return)]` on by default
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 17 -     return sum;
[INFO] [stdout] 17 +     sum
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/exercises/caesar_cypher.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     return new_letter;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 14 -     return new_letter;
[INFO] [stdout] 14 +     new_letter
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: casting a character literal to `u8` truncates
[INFO] [stdout]   --> src/exercises/caesar_cypher.rs:10:21
[INFO] [stdout]    |
[INFO] [stdout] 10 |     if new_number > 'z' as u8 {
[INFO] [stdout]    |                     ^^^^^^^^^ help: use a byte literal instead: `b'z'`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `char` is four bytes wide, but `u8` is a single byte
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#char_lit_as_u8
[INFO] [stdout]    = note: `#[warn(clippy::char_lit_as_u8)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: used `assert_eq!` with a literal bool
[INFO] [stdout]  --> src/tests/t_roman_numeral_comparison.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     assert_eq!(roman_numeral_comparison::numcompare("XVI", "VIII"), false);
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bool_assert_comparison
[INFO] [stdout]   = note: `#[warn(clippy::bool_assert_comparison)]` on by default
[INFO] [stdout] help: replace it with `assert!(..)`
[INFO] [stdout]   |
[INFO] [stdout] 5 -     assert_eq!(roman_numeral_comparison::numcompare("XVI", "VIII"), false);
[INFO] [stdout] 5 +     assert!(!roman_numeral_comparison::numcompare("XVI", "VIII"));
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/exercises/caesar_cypher.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 |     return code_sentence;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 23 -     return code_sentence;
[INFO] [stdout] 23 +     code_sentence
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: used `assert_eq!` with a literal bool
[INFO] [stdout]  --> src/tests/t_roman_numeral_comparison.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     assert_eq!(roman_numeral_comparison::numcompare("V", "IIIII"), false);
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bool_assert_comparison
[INFO] [stdout] help: replace it with `assert!(..)`
[INFO] [stdout]   |
[INFO] [stdout] 6 -     assert_eq!(roman_numeral_comparison::numcompare("V", "IIIII"), false);
[INFO] [stdout] 6 +     assert!(!roman_numeral_comparison::numcompare("V", "IIIII"));
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/exercises/caesar_cypher.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 27 |     return caesar_cypher(sentence, shifting);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 27 -     return caesar_cypher(sentence, shifting);
[INFO] [stdout] 27 +     caesar_cypher(sentence, shifting)
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: used `assert_eq!` with a literal bool
[INFO] [stdout]  --> src/tests/t_roman_numeral_comparison.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     assert_eq!(roman_numeral_comparison::numcompare("CCLXV", "MMDII"), true);
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bool_assert_comparison
[INFO] [stdout] help: replace it with `assert!(..)`
[INFO] [stdout]   |
[INFO] [stdout] 7 -     assert_eq!(roman_numeral_comparison::numcompare("CCLXV", "MMDII"), true);
[INFO] [stdout] 7 +     assert!(roman_numeral_comparison::numcompare("CCLXV", "MMDII"));
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: used `assert_eq!` with a literal bool
[INFO] [stdout]  --> src/tests/t_reverse_factorial.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     assert_eq!(reverse_factorial::reverse_factorial(150), false);
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bool_assert_comparison
[INFO] [stdout] help: replace it with `assert!(..)`
[INFO] [stdout]   |
[INFO] [stdout] 5 -     assert_eq!(reverse_factorial::reverse_factorial(150), false);
[INFO] [stdout] 5 +     assert!(!reverse_factorial::reverse_factorial(150));
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/exercises/reverse_factorial.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |         return true;
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 11 -         return true;
[INFO] [stdout] 11 +         true
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/exercises/reverse_factorial.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |         return false;
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 14 -         return false;
[INFO] [stdout] 14 +         false
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of `.is_multiple_of()`
[INFO] [stdout]  --> src/exercises/reverse_factorial.rs:6:11
[INFO] [stdout]   |
[INFO] [stdout] 6 |     while n_x % i == 0 {
[INFO] [stdout]   |           ^^^^^^^^^^^^ help: replace with: `n_x.is_multiple_of(i)`
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_is_multiple_of
[INFO] [stdout]   = note: `#[warn(clippy::manual_is_multiple_of)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of an assign operation
[INFO] [stdout]  --> src/exercises/reverse_factorial.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |         n_x = n_x / i;
[INFO] [stdout]   |         ^^^^^^^^^^^^^ help: replace it with: `n_x /= i`
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stdout]   = note: `#[warn(clippy::assign_op_pattern)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: used `assert_eq!` with a literal bool
[INFO] [stdout]  --> src/tests/t_reverse_factorial.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     assert_eq!(reverse_factorial::reverse_factorial(120), true);
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bool_assert_comparison
[INFO] [stdout] help: replace it with `assert!(..)`
[INFO] [stdout]   |
[INFO] [stdout] 6 -     assert_eq!(reverse_factorial::reverse_factorial(120), true);
[INFO] [stdout] 6 +     assert!(reverse_factorial::reverse_factorial(120));
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this if-then-else expression returns a bool literal
[INFO] [stdout]   --> src/exercises/reverse_factorial.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | /     if n_x == 1 {
[INFO] [stdout] 11 | |         return true;
[INFO] [stdout] 12 | |     }
[INFO] [stdout] 13 | |     else {
[INFO] [stdout] 14 | |         return false;
[INFO] [stdout] 15 | |     }
[INFO] [stdout]    | |_____^ help: you can reduce it to: `return n_x == 1`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_bool
[INFO] [stdout]    = note: `#[warn(clippy::needless_bool)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/exercises/next_palindrome.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     return true;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 10 -     return true;
[INFO] [stdout] 10 +     true
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/exercises/next_palindrome.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     return n_x;
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 18 -     return n_x;
[INFO] [stdout] 18 +     n_x
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]  --> src/exercises/fibonacci_ish_sequence.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |         return 0;
[INFO] [stdout]   |         ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]   |
[INFO] [stdout] 5 -         return 0;
[INFO] [stdout] 5 +         0
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]  --> src/exercises/fibonacci_ish_sequence.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |         return start;
[INFO] [stdout]   |         ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]   |
[INFO] [stdout] 7 -         return start;
[INFO] [stdout] 7 +         start
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]  --> src/exercises/fibonacci_ish_sequence.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |         return fibo(x - 1, start) + fibo(x - 2, start);
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]   |
[INFO] [stdout] 9 -         return fibo(x - 1, start) + fibo(x - 2, start);
[INFO] [stdout] 9 +         fibo(x - 1, start) + fibo(x - 2, start)
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/exercises/fibonacci_ish_sequence.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 40 |     return target / div;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 40 -     return target / div;
[INFO] [stdout] 40 +     target / div
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of `.is_multiple_of()`
[INFO] [stdout]   --> src/exercises/fibonacci_ish_sequence.rs:34:12
[INFO] [stdout]    |
[INFO] [stdout] 34 |         if target % f == 0 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^ help: replace with: `target.is_multiple_of(f)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_is_multiple_of
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]  --> src/exercises/letter_sum_value.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     return (letter as u32) - ('a' as u32) + 1;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]   |
[INFO] [stdout] 5 -     return (letter as u32) - ('a' as u32) + 1;
[INFO] [stdout] 5 +     (letter as u32) - ('a' as u32) + 1
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/exercises/letter_sum_value.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     return sum;
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 13 -     return sum;
[INFO] [stdout] 13 +     sum
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/exercises/pancake_sort.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     return a
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 11 -     return a
[INFO] [stdout] 11 +     a
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&Vec` instead of `&[_]` involves a new object where a slice will do
[INFO] [stdout]  --> src/exercises/pancake_sort.rs:3:27
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn pancake_sort(arr : &Vec<i32>, n: usize) -> Vec<i32> {
[INFO] [stdout]   |                           ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stdout]   = note: `#[warn(clippy::ptr_arg)]` on by default
[INFO] [stdout] help: change this to
[INFO] [stdout]   |
[INFO] [stdout] 3 - pub fn pancake_sort(arr : &Vec<i32>, n: usize) -> Vec<i32> {
[INFO] [stdout] 3 + pub fn pancake_sort(arr : &[i32], n: usize) -> Vec<i32> {
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the loop variable `i` is only used to index `arr`
[INFO] [stdout]  --> src/exercises/pancake_sort.rs:8:14
[INFO] [stdout]   |
[INFO] [stdout] 8 |     for i in n..arr.len() {
[INFO] [stdout]   |              ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stdout]   = note: `#[warn(clippy::needless_range_loop)]` on by default
[INFO] [stdout] help: consider using an iterator
[INFO] [stdout]   |
[INFO] [stdout] 8 -     for i in n..arr.len() {
[INFO] [stdout] 8 +     for <item> in arr.iter().skip(n) {
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/exercises/abacaba_sequence.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     return word;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 10 -     return word;
[INFO] [stdout] 10 +     word
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/exercises/yahtzee_scoring.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     return bsf;
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 17 -     return bsf;
[INFO] [stdout] 17 +     bsf
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/exercises/yahtzee_scoring.rs:38:5
[INFO] [stdout]    |
[INFO] [stdout] 38 |     return bsf;
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 38 -     return bsf;
[INFO] [stdout] 38 +     bsf
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/exercises/progressive_taxation.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 |     return t as u32;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 16 -     return t as u32;
[INFO] [stdout] 16 +     t as u32
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]  --> src/exercises/julian_calendar.rs:6:27
[INFO] [stdout]   |
[INFO] [stdout] 6 |         if i % 4 == 0 && (!(i % 100 == 0) || (i % 900 == 200) || (i % 900 == 600)) {
[INFO] [stdout]   |                           ^^^^^^^^^^^^^^^ help: try: `(i % 100 != 0)`
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout]   = note: `#[warn(clippy::nonminimal_bool)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/exercises/julian_calendar.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     return count;
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 10 -     return count;
[INFO] [stdout] 10 +     count
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/exercises/word_ladder.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     return nb_char - count - 1;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 18 -     return nb_char - count - 1;
[INFO] [stdout] 18 +     nb_char - count - 1
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/exercises/word_ladder.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 |     return sum;
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 29 -     return sum;
[INFO] [stdout] 29 +     sum
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&Vec` instead of `&[_]` involves a new object where a slice will do
[INFO] [stdout]   --> src/exercises/word_ladder.rs:21:29
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub fn total_spacing(words: &Vec<&str>) -> i32 {
[INFO] [stdout]    |                             ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stdout] help: change this to
[INFO] [stdout]    |
[INFO] [stdout] 21 - pub fn total_spacing(words: &Vec<&str>) -> i32 {
[INFO] [stdout] 21 + pub fn total_spacing(words: &[&str]) -> i32 {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&Vec` instead of `&[_]` involves a new object where a slice will do
[INFO] [stdout]   --> src/exercises/word_ladder.rs:32:29
[INFO] [stdout]    |
[INFO] [stdout] 32 | fn power_set<T: Clone>(vec: &Vec<T>) -> Vec<Vec<T>> {
[INFO] [stdout]    |                             ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stdout] help: change this to
[INFO] [stdout]    |
[INFO] [stdout] 32 - fn power_set<T: Clone>(vec: &Vec<T>) -> Vec<Vec<T>> {
[INFO] [stdout] 32 + fn power_set<T: Clone>(vec: &[T]) -> Vec<Vec<T>> {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the loop variable `j` is used to index `vec`
[INFO] [stdout]   --> src/exercises/word_ladder.rs:39:18
[INFO] [stdout]    |
[INFO] [stdout] 39 |         for j in 0..n {
[INFO] [stdout]    |                  ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stdout] help: consider using an iterator and enumerate()
[INFO] [stdout]    |
[INFO] [stdout] 39 -         for j in 0..n {
[INFO] [stdout] 39 +         for (j, <item>) in vec.iter().enumerate().take(n) {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/exercises/word_ladder.rs:61:5
[INFO] [stdout]    |
[INFO] [stdout] 61 |     return (bsf_vec, bsf_spacing);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 61 -     return (bsf_vec, bsf_spacing);
[INFO] [stdout] 61 +     (bsf_vec, bsf_spacing)
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]   --> src/exercises/word_ladder.rs:54:29
[INFO] [stdout]    |
[INFO] [stdout] 54 |     for subset in power_set(&words) {
[INFO] [stdout]    |                             ^^^^^^ help: change this to: `words`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow
[INFO] [stdout]    = note: `#[warn(clippy::needless_borrow)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]  --> src/exercises/iec_rule.rs:6:57
[INFO] [stdout]   |
[INFO] [stdout] 6 |         if w[i] == 'e' && w[i + 1] == 'i' && (i == 0 || !(w[i - 1] == 'c')) {
[INFO] [stdout]   |                                                         ^^^^^^^^^^^^^^^^^^ help: try: `(w[i - 1] != 'c')`
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/exercises/iec_rule.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     return true;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 13 -     return true;
[INFO] [stdout] 13 +     true
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: used `assert_eq!` with a literal bool
[INFO] [stdout]  --> src/tests/t_iec_rule.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     assert_eq!(iec_rule::iec_rule("a"), true);
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bool_assert_comparison
[INFO] [stdout] help: replace it with `assert!(..)`
[INFO] [stdout]   |
[INFO] [stdout] 5 -     assert_eq!(iec_rule::iec_rule("a"), true);
[INFO] [stdout] 5 +     assert!(iec_rule::iec_rule("a"));
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: used `assert_eq!` with a literal bool
[INFO] [stdout]  --> src/tests/t_iec_rule.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     assert_eq!(iec_rule::iec_rule("zombie"), true);
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bool_assert_comparison
[INFO] [stdout] help: replace it with `assert!(..)`
[INFO] [stdout]   |
[INFO] [stdout] 6 -     assert_eq!(iec_rule::iec_rule("zombie"), true);
[INFO] [stdout] 6 +     assert!(iec_rule::iec_rule("zombie"));
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: used `assert_eq!` with a literal bool
[INFO] [stdout]  --> src/tests/t_iec_rule.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     assert_eq!(iec_rule::iec_rule("transceiver"), true);
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bool_assert_comparison
[INFO] [stdout] help: replace it with `assert!(..)`
[INFO] [stdout]   |
[INFO] [stdout] 7 -     assert_eq!(iec_rule::iec_rule("transceiver"), true);
[INFO] [stdout] 7 +     assert!(iec_rule::iec_rule("transceiver"));
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: used `assert_eq!` with a literal bool
[INFO] [stdout]  --> src/tests/t_iec_rule.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     assert_eq!(iec_rule::iec_rule("veil"), false);
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bool_assert_comparison
[INFO] [stdout] help: replace it with `assert!(..)`
[INFO] [stdout]   |
[INFO] [stdout] 8 -     assert_eq!(iec_rule::iec_rule("veil"), false);
[INFO] [stdout] 8 +     assert!(!iec_rule::iec_rule("veil"));
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: used `assert_eq!` with a literal bool
[INFO] [stdout]  --> src/tests/t_iec_rule.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     assert_eq!(iec_rule::iec_rule("icier"), false);
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bool_assert_comparison
[INFO] [stdout] help: replace it with `assert!(..)`
[INFO] [stdout]   |
[INFO] [stdout] 9 -     assert_eq!(iec_rule::iec_rule("icier"), false);
[INFO] [stdout] 9 +     assert!(!iec_rule::iec_rule("icier"));
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/exercises/roman_numeral_comparison.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     return sum;
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout]    = note: `#[warn(clippy::needless_return)]` on by default
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 17 -     return sum;
[INFO] [stdout] 17 +     sum
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/exercises/caesar_cypher.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     return new_letter;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 14 -     return new_letter;
[INFO] [stdout] 14 +     new_letter
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: casting a character literal to `u8` truncates
[INFO] [stdout]   --> src/exercises/caesar_cypher.rs:10:21
[INFO] [stdout]    |
[INFO] [stdout] 10 |     if new_number > 'z' as u8 {
[INFO] [stdout]    |                     ^^^^^^^^^ help: use a byte literal instead: `b'z'`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `char` is four bytes wide, but `u8` is a single byte
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#char_lit_as_u8
[INFO] [stdout]    = note: `#[warn(clippy::char_lit_as_u8)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/exercises/caesar_cypher.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 |     return code_sentence;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 23 -     return code_sentence;
[INFO] [stdout] 23 +     code_sentence
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/exercises/caesar_cypher.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 27 |     return caesar_cypher(sentence, shifting);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 27 -     return caesar_cypher(sentence, shifting);
[INFO] [stdout] 27 +     caesar_cypher(sentence, shifting)
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/exercises/reverse_factorial.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |         return true;
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 11 -         return true;
[INFO] [stdout] 11 +         true
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/exercises/reverse_factorial.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |         return false;
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 14 -         return false;
[INFO] [stdout] 14 +         false
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of `.is_multiple_of()`
[INFO] [stdout]  --> src/exercises/reverse_factorial.rs:6:11
[INFO] [stdout]   |
[INFO] [stdout] 6 |     while n_x % i == 0 {
[INFO] [stdout]   |           ^^^^^^^^^^^^ help: replace with: `n_x.is_multiple_of(i)`
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_is_multiple_of
[INFO] [stdout]   = note: `#[warn(clippy::manual_is_multiple_of)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of an assign operation
[INFO] [stdout]  --> src/exercises/reverse_factorial.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |         n_x = n_x / i;
[INFO] [stdout]   |         ^^^^^^^^^^^^^ help: replace it with: `n_x /= i`
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stdout]   = note: `#[warn(clippy::assign_op_pattern)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this if-then-else expression returns a bool literal
[INFO] [stdout]   --> src/exercises/reverse_factorial.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | /     if n_x == 1 {
[INFO] [stdout] 11 | |         return true;
[INFO] [stdout] 12 | |     }
[INFO] [stdout] 13 | |     else {
[INFO] [stdout] 14 | |         return false;
[INFO] [stdout] 15 | |     }
[INFO] [stdout]    | |_____^ help: you can reduce it to: `return n_x == 1`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_bool
[INFO] [stdout]    = note: `#[warn(clippy::needless_bool)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/exercises/next_palindrome.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     return true;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 10 -     return true;
[INFO] [stdout] 10 +     true
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/exercises/next_palindrome.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     return n_x;
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 18 -     return n_x;
[INFO] [stdout] 18 +     n_x
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]  --> src/exercises/fibonacci_ish_sequence.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |         return 0;
[INFO] [stdout]   |         ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]   |
[INFO] [stdout] 5 -         return 0;
[INFO] [stdout] 5 +         0
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]  --> src/exercises/fibonacci_ish_sequence.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |         return start;
[INFO] [stdout]   |         ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]   |
[INFO] [stdout] 7 -         return start;
[INFO] [stdout] 7 +         start
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]  --> src/exercises/fibonacci_ish_sequence.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |         return fibo(x - 1, start) + fibo(x - 2, start);
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]   |
[INFO] [stdout] 9 -         return fibo(x - 1, start) + fibo(x - 2, start);
[INFO] [stdout] 9 +         fibo(x - 1, start) + fibo(x - 2, start)
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/exercises/fibonacci_ish_sequence.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 40 |     return target / div;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 40 -     return target / div;
[INFO] [stdout] 40 +     target / div
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: manual implementation of `.is_multiple_of()`
[INFO] [stdout]   --> src/exercises/fibonacci_ish_sequence.rs:34:12
[INFO] [stdout]    |
[INFO] [stdout] 34 |         if target % f == 0 {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^ help: replace with: `target.is_multiple_of(f)`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#manual_is_multiple_of
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]  --> src/exercises/letter_sum_value.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     return (letter as u32) - ('a' as u32) + 1;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]   |
[INFO] [stdout] 5 -     return (letter as u32) - ('a' as u32) + 1;
[INFO] [stdout] 5 +     (letter as u32) - ('a' as u32) + 1
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/exercises/letter_sum_value.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     return sum;
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 13 -     return sum;
[INFO] [stdout] 13 +     sum
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/exercises/pancake_sort.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     return a
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 11 -     return a
[INFO] [stdout] 11 +     a
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&Vec` instead of `&[_]` involves a new object where a slice will do
[INFO] [stdout]  --> src/exercises/pancake_sort.rs:3:27
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn pancake_sort(arr : &Vec<i32>, n: usize) -> Vec<i32> {
[INFO] [stdout]   |                           ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stdout]   = note: `#[warn(clippy::ptr_arg)]` on by default
[INFO] [stdout] help: change this to
[INFO] [stdout]   |
[INFO] [stdout] 3 - pub fn pancake_sort(arr : &Vec<i32>, n: usize) -> Vec<i32> {
[INFO] [stdout] 3 + pub fn pancake_sort(arr : &[i32], n: usize) -> Vec<i32> {
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the loop variable `i` is only used to index `arr`
[INFO] [stdout]  --> src/exercises/pancake_sort.rs:8:14
[INFO] [stdout]   |
[INFO] [stdout] 8 |     for i in n..arr.len() {
[INFO] [stdout]   |              ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stdout]   = note: `#[warn(clippy::needless_range_loop)]` on by default
[INFO] [stdout] help: consider using an iterator
[INFO] [stdout]   |
[INFO] [stdout] 8 -     for i in n..arr.len() {
[INFO] [stdout] 8 +     for <item> in arr.iter().skip(n) {
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/exercises/abacaba_sequence.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     return word;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 10 -     return word;
[INFO] [stdout] 10 +     word
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/exercises/yahtzee_scoring.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     return bsf;
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 17 -     return bsf;
[INFO] [stdout] 17 +     bsf
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/exercises/yahtzee_scoring.rs:38:5
[INFO] [stdout]    |
[INFO] [stdout] 38 |     return bsf;
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 38 -     return bsf;
[INFO] [stdout] 38 +     bsf
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/exercises/progressive_taxation.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 |     return t as u32;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 16 -     return t as u32;
[INFO] [stdout] 16 +     t as u32
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]  --> src/exercises/julian_calendar.rs:6:27
[INFO] [stdout]   |
[INFO] [stdout] 6 |         if i % 4 == 0 && (!(i % 100 == 0) || (i % 900 == 200) || (i % 900 == 600)) {
[INFO] [stdout]   |                           ^^^^^^^^^^^^^^^ help: try: `(i % 100 != 0)`
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout]   = note: `#[warn(clippy::nonminimal_bool)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/exercises/julian_calendar.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     return count;
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 10 -     return count;
[INFO] [stdout] 10 +     count
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/exercises/word_ladder.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     return nb_char - count - 1;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 18 -     return nb_char - count - 1;
[INFO] [stdout] 18 +     nb_char - count - 1
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/exercises/word_ladder.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 |     return sum;
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 29 -     return sum;
[INFO] [stdout] 29 +     sum
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&Vec` instead of `&[_]` involves a new object where a slice will do
[INFO] [stdout]   --> src/exercises/word_ladder.rs:21:29
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub fn total_spacing(words: &Vec<&str>) -> i32 {
[INFO] [stdout]    |                             ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stdout] help: change this to
[INFO] [stdout]    |
[INFO] [stdout] 21 - pub fn total_spacing(words: &Vec<&str>) -> i32 {
[INFO] [stdout] 21 + pub fn total_spacing(words: &[&str]) -> i32 {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: writing `&Vec` instead of `&[_]` involves a new object where a slice will do
[INFO] [stdout]   --> src/exercises/word_ladder.rs:32:29
[INFO] [stdout]    |
[INFO] [stdout] 32 | fn power_set<T: Clone>(vec: &Vec<T>) -> Vec<Vec<T>> {
[INFO] [stdout]    |                             ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stdout] help: change this to
[INFO] [stdout]    |
[INFO] [stdout] 32 - fn power_set<T: Clone>(vec: &Vec<T>) -> Vec<Vec<T>> {
[INFO] [stdout] 32 + fn power_set<T: Clone>(vec: &[T]) -> Vec<Vec<T>> {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the loop variable `j` is used to index `vec`
[INFO] [stdout]   --> src/exercises/word_ladder.rs:39:18
[INFO] [stdout]    |
[INFO] [stdout] 39 |         for j in 0..n {
[INFO] [stdout]    |                  ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_range_loop
[INFO] [stdout] help: consider using an iterator and enumerate()
[INFO] [stdout]    |
[INFO] [stdout] 39 -         for j in 0..n {
[INFO] [stdout] 39 +         for (j, <item>) in vec.iter().enumerate().take(n) {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/exercises/word_ladder.rs:61:5
[INFO] [stdout]    |
[INFO] [stdout] 61 |     return (bsf_vec, bsf_spacing);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 61 -     return (bsf_vec, bsf_spacing);
[INFO] [stdout] 61 +     (bsf_vec, bsf_spacing)
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this expression creates a reference which is immediately dereferenced by the compiler
[INFO] [stdout]   --> src/exercises/word_ladder.rs:54:29
[INFO] [stdout]    |
[INFO] [stdout] 54 |     for subset in power_set(&words) {
[INFO] [stdout]    |                             ^^^^^^ help: change this to: `words`
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_borrow
[INFO] [stdout]    = note: `#[warn(clippy::needless_borrow)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this boolean expression can be simplified
[INFO] [stdout]  --> src/exercises/iec_rule.rs:6:57
[INFO] [stdout]   |
[INFO] [stdout] 6 |         if w[i] == 'e' && w[i + 1] == 'i' && (i == 0 || !(w[i - 1] == 'c')) {
[INFO] [stdout]   |                                                         ^^^^^^^^^^^^^^^^^^ help: try: `(w[i - 1] != 'c')`
[INFO] [stdout]   |
[INFO] [stdout]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unneeded `return` statement
[INFO] [stdout]   --> src/exercises/iec_rule.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     return true;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stdout] help: remove `return`
[INFO] [stdout]    |
[INFO] [stdout] 13 -     return true;
[INFO] [stdout] 13 +     true
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.32s
[INFO] running `Command { std: "docker" "inspect" "82c6e00b6dff381233978317dd00646c19c8edaaaf6a53a8b7d69b3941ad2ee5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "82c6e00b6dff381233978317dd00646c19c8edaaaf6a53a8b7d69b3941ad2ee5", kill_on_drop: false }`
[INFO] [stdout] 82c6e00b6dff381233978317dd00646c19c8edaaaf6a53a8b7d69b3941ad2ee5