[INFO] updating cached repository frigus02/crypto-playground
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/frigus02/crypto-playground
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/frigus02/crypto-playground" "work/ex/clippy-test-run/sources/stable/gh/frigus02/crypto-playground"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/frigus02/crypto-playground'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/frigus02/crypto-playground" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/frigus02/crypto-playground"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/frigus02/crypto-playground'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] ec966bae4c9681eb558dc68586edfc05b69b04ef
[INFO] sha for GitHub repo frigus02/crypto-playground: ec966bae4c9681eb558dc68586edfc05b69b04ef
[INFO] validating manifest of frigus02/crypto-playground 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 frigus02/crypto-playground 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 frigus02/crypto-playground
[INFO] finished frobbing frigus02/crypto-playground
[INFO] frobbed toml for frigus02/crypto-playground written to work/ex/clippy-test-run/sources/stable/gh/frigus02/crypto-playground/Cargo.toml
[INFO] started frobbing frigus02/crypto-playground
[INFO] finished frobbing frigus02/crypto-playground
[INFO] frobbed toml for frigus02/crypto-playground written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/frigus02/crypto-playground/Cargo.toml
[INFO] crate frigus02/crypto-playground 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 frigus02/crypto-playground 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-1/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/frigus02/crypto-playground:/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] f6d5d5fbfdb9c68ab6c9cb612808461bfae21afe26d8762a1c07e1178daa9dad
[INFO] running `"docker" "start" "-a" "f6d5d5fbfdb9c68ab6c9cb612808461bfae21afe26d8762a1c07e1178daa9dad"`
[INFO] [stderr]     Checking crypto-playground v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/analysis/hemming_distance.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 |     return Ok(distance);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Ok(distance)`
[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/analysis/letter_frequency.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 |     return differences.iter().sum::<f64>() / differences.len() as f64;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `differences.iter().sum::<f64>() / differences.len() as f64`
[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/analysis/letter_frequency.rs:51:5
[INFO] [stderr]    |
[INFO] [stderr] 51 |     return Ok(scores);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Ok(scores)`
[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/analysis/letter_frequency.rs:67:5
[INFO] [stderr]    |
[INFO] [stderr] 67 |     return scores;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^ help: remove `return` as shown: `scores`
[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/challenges/break_repeating_key_xor.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     return Ok(Info { key, plain_text });
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Ok(Info { key, plain_text })`
[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/challenges/detect_single_char_xor.rs:32:5
[INFO] [stderr]    |
[INFO] [stderr] 32 | /     return match String::from_utf8(decoded_bytes) {
[INFO] [stderr] 33 | |         Ok(plain_text) => Ok(Info {
[INFO] [stderr] 34 | |             key,
[INFO] [stderr] 35 | |             plain_text,
[INFO] [stderr] ...  |
[INFO] [stderr] 38 | |         Err(err) => Err(format!("decoding failed: {}", err)),
[INFO] [stderr] 39 | |     };
[INFO] [stderr]    | |______^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]    |
[INFO] [stderr] 32 |     match String::from_utf8(decoded_bytes) {
[INFO] [stderr] 33 |         Ok(plain_text) => Ok(Info {
[INFO] [stderr] 34 |             key,
[INFO] [stderr] 35 |             plain_text,
[INFO] [stderr] 36 |             score,
[INFO] [stderr] 37 |         }),
[INFO] [stderr]  ...
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/challenges/fixed_xor.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     return hex::encode(&result);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `hex::encode(&result)`
[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/challenges/hex_to_base64.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     return base64::encode(bytes.as_slice());
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `base64::encode(bytes.as_slice())`
[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/challenges/repeating_key_xor.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     return hex::encode(&result);
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `hex::encode(&result)`
[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/challenges/single_byte_xor.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     return hex::encode(&result);
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `hex::encode(&result)`
[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/encoding/base64.rs:29:5
[INFO] [stderr]    |
[INFO] [stderr] 29 |     return String::from_utf8(base64_bytes).unwrap();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `String::from_utf8(base64_bytes).unwrap()`
[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/encoding/base64.rs:33:5
[INFO] [stderr]    |
[INFO] [stderr] 33 | /     return if value <= 25 {
[INFO] [stderr] 34 | |         value + 65 // "A" - "Z"
[INFO] [stderr] 35 | |     } else if value >= 26 && value <= 51 {
[INFO] [stderr] 36 | |         value + 71 // "a" - "z"
[INFO] [stderr] ...  |
[INFO] [stderr] 44 | |         panic!("Invalid base64 value: {}", value);
[INFO] [stderr] 45 | |     };
[INFO] [stderr]    | |______^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]    |
[INFO] [stderr] 33 |     if value <= 25 {
[INFO] [stderr] 34 |         value + 65 // "A" - "Z"
[INFO] [stderr] 35 |     } else if value >= 26 && value <= 51 {
[INFO] [stderr] 36 |         value + 71 // "a" - "z"
[INFO] [stderr] 37 |     } else if value >= 52 && value <= 61 {
[INFO] [stderr] 38 |         value - 4 // "0" - "9"
[INFO] [stderr]  ...
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/encoding/base64.rs:77:5
[INFO] [stderr]    |
[INFO] [stderr] 77 |     return bytes;
[INFO] [stderr]    |     ^^^^^^^^^^^^^ help: remove `return` as shown: `bytes`
[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/encoding/base64.rs:81:5
[INFO] [stderr]    |
[INFO] [stderr] 81 | /     return if value >= 65 && value <= 90 {
[INFO] [stderr] 82 | |         value - 65 // "A" - "Z"
[INFO] [stderr] 83 | |     } else if value >= 97 && value <= 122 {
[INFO] [stderr] 84 | |         value - 71 // "a" - "z"
[INFO] [stderr] ...  |
[INFO] [stderr] 92 | |         panic!("Invalid base64 value: {}", value);
[INFO] [stderr] 93 | |     };
[INFO] [stderr]    | |______^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]    |
[INFO] [stderr] 81 |     if value >= 65 && value <= 90 {
[INFO] [stderr] 82 |         value - 65 // "A" - "Z"
[INFO] [stderr] 83 |     } else if value >= 97 && value <= 122 {
[INFO] [stderr] 84 |         value - 71 // "a" - "z"
[INFO] [stderr] 85 |     } else if value >= 48 && value <= 57 {
[INFO] [stderr] 86 |         value + 4 // "0" - "9"
[INFO] [stderr]  ...
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/encoding/hex.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 |     return String::from_utf8(hex_bytes).unwrap();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `String::from_utf8(hex_bytes).unwrap()`
[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/encoding/hex.rs:28:5
[INFO] [stderr]    |
[INFO] [stderr] 28 | /     return if value <= 9 {
[INFO] [stderr] 29 | |         value + 48 // "0" - "9"
[INFO] [stderr] 30 | |     } else if value >= 10 && value <= 15 {
[INFO] [stderr] 31 | |         value + 87 // "a" - "f"
[INFO] [stderr] 32 | |     } else {
[INFO] [stderr] 33 | |         panic!("Invalid hex value: {}", value);
[INFO] [stderr] 34 | |     };
[INFO] [stderr]    | |______^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]    |
[INFO] [stderr] 28 |     if value <= 9 {
[INFO] [stderr] 29 |         value + 48 // "0" - "9"
[INFO] [stderr] 30 |     } else if value >= 10 && value <= 15 {
[INFO] [stderr] 31 |         value + 87 // "a" - "f"
[INFO] [stderr] 32 |     } else {
[INFO] [stderr] 33 |         panic!("Invalid hex value: {}", value);
[INFO] [stderr]  ...
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/encoding/hex.rs:55:5
[INFO] [stderr]    |
[INFO] [stderr] 55 |     return bytes;
[INFO] [stderr]    |     ^^^^^^^^^^^^^ help: remove `return` as shown: `bytes`
[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/encoding/hex.rs:59:5
[INFO] [stderr]    |
[INFO] [stderr] 59 | /     return if value >= 48 && value <= 57 {
[INFO] [stderr] 60 | |         value - 48 // "0" - "9"
[INFO] [stderr] 61 | |     } else if value >= 65 && value <= 70 {
[INFO] [stderr] 62 | |         value - 55 // "A" - "F"
[INFO] [stderr] ...  |
[INFO] [stderr] 66 | |         panic!("Invalid hex value: {}", value);
[INFO] [stderr] 67 | |     };
[INFO] [stderr]    | |______^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]    |
[INFO] [stderr] 59 |     if value >= 48 && value <= 57 {
[INFO] [stderr] 60 |         value - 48 // "0" - "9"
[INFO] [stderr] 61 |     } else if value >= 65 && value <= 70 {
[INFO] [stderr] 62 |         value - 55 // "A" - "F"
[INFO] [stderr] 63 |     } else if value >= 97 && value <= 102 {
[INFO] [stderr] 64 |         value - 87 // "a" - "f"
[INFO] [stderr]  ...
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/encoding/xor.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 |     return encoded_bytes;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `encoded_bytes`
[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/analysis/hemming_distance.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 |     return Ok(distance);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Ok(distance)`
[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/analysis/letter_frequency.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 |     return differences.iter().sum::<f64>() / differences.len() as f64;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `differences.iter().sum::<f64>() / differences.len() as f64`
[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/analysis/letter_frequency.rs:51:5
[INFO] [stderr]    |
[INFO] [stderr] 51 |     return Ok(scores);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Ok(scores)`
[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/analysis/letter_frequency.rs:67:5
[INFO] [stderr]    |
[INFO] [stderr] 67 |     return scores;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^ help: remove `return` as shown: `scores`
[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/challenges/break_repeating_key_xor.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     return Ok(Info { key, plain_text });
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Ok(Info { key, plain_text })`
[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/challenges/detect_single_char_xor.rs:32:5
[INFO] [stderr]    |
[INFO] [stderr] 32 | /     return match String::from_utf8(decoded_bytes) {
[INFO] [stderr] 33 | |         Ok(plain_text) => Ok(Info {
[INFO] [stderr] 34 | |             key,
[INFO] [stderr] 35 | |             plain_text,
[INFO] [stderr] ...  |
[INFO] [stderr] 38 | |         Err(err) => Err(format!("decoding failed: {}", err)),
[INFO] [stderr] 39 | |     };
[INFO] [stderr]    | |______^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]    |
[INFO] [stderr] 32 |     match String::from_utf8(decoded_bytes) {
[INFO] [stderr] 33 |         Ok(plain_text) => Ok(Info {
[INFO] [stderr] 34 |             key,
[INFO] [stderr] 35 |             plain_text,
[INFO] [stderr] 36 |             score,
[INFO] [stderr] 37 |         }),
[INFO] [stderr]  ...
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/challenges/fixed_xor.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     return hex::encode(&result);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `hex::encode(&result)`
[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/challenges/hex_to_base64.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     return base64::encode(bytes.as_slice());
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `base64::encode(bytes.as_slice())`
[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/challenges/repeating_key_xor.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     return hex::encode(&result);
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `hex::encode(&result)`
[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/challenges/single_byte_xor.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     return hex::encode(&result);
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `hex::encode(&result)`
[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/encoding/base64.rs:29:5
[INFO] [stderr]    |
[INFO] [stderr] 29 |     return String::from_utf8(base64_bytes).unwrap();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `String::from_utf8(base64_bytes).unwrap()`
[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/encoding/base64.rs:33:5
[INFO] [stderr]    |
[INFO] [stderr] 33 | /     return if value <= 25 {
[INFO] [stderr] 34 | |         value + 65 // "A" - "Z"
[INFO] [stderr] 35 | |     } else if value >= 26 && value <= 51 {
[INFO] [stderr] 36 | |         value + 71 // "a" - "z"
[INFO] [stderr] ...  |
[INFO] [stderr] 44 | |         panic!("Invalid base64 value: {}", value);
[INFO] [stderr] 45 | |     };
[INFO] [stderr]    | |______^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]    |
[INFO] [stderr] 33 |     if value <= 25 {
[INFO] [stderr] 34 |         value + 65 // "A" - "Z"
[INFO] [stderr] 35 |     } else if value >= 26 && value <= 51 {
[INFO] [stderr] 36 |         value + 71 // "a" - "z"
[INFO] [stderr] 37 |     } else if value >= 52 && value <= 61 {
[INFO] [stderr] 38 |         value - 4 // "0" - "9"
[INFO] [stderr]  ...
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/encoding/base64.rs:77:5
[INFO] [stderr]    |
[INFO] [stderr] 77 |     return bytes;
[INFO] [stderr]    |     ^^^^^^^^^^^^^ help: remove `return` as shown: `bytes`
[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/encoding/base64.rs:81:5
[INFO] [stderr]    |
[INFO] [stderr] 81 | /     return if value >= 65 && value <= 90 {
[INFO] [stderr] 82 | |         value - 65 // "A" - "Z"
[INFO] [stderr] 83 | |     } else if value >= 97 && value <= 122 {
[INFO] [stderr] 84 | |         value - 71 // "a" - "z"
[INFO] [stderr] ...  |
[INFO] [stderr] 92 | |         panic!("Invalid base64 value: {}", value);
[INFO] [stderr] 93 | |     };
[INFO] [stderr]    | |______^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]    |
[INFO] [stderr] 81 |     if value >= 65 && value <= 90 {
[INFO] [stderr] 82 |         value - 65 // "A" - "Z"
[INFO] [stderr] 83 |     } else if value >= 97 && value <= 122 {
[INFO] [stderr] 84 |         value - 71 // "a" - "z"
[INFO] [stderr] 85 |     } else if value >= 48 && value <= 57 {
[INFO] [stderr] 86 |         value + 4 // "0" - "9"
[INFO] [stderr]  ...
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/encoding/hex.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 |     return String::from_utf8(hex_bytes).unwrap();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `String::from_utf8(hex_bytes).unwrap()`
[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/encoding/hex.rs:28:5
[INFO] [stderr]    |
[INFO] [stderr] 28 | /     return if value <= 9 {
[INFO] [stderr] 29 | |         value + 48 // "0" - "9"
[INFO] [stderr] 30 | |     } else if value >= 10 && value <= 15 {
[INFO] [stderr] 31 | |         value + 87 // "a" - "f"
[INFO] [stderr] 32 | |     } else {
[INFO] [stderr] 33 | |         panic!("Invalid hex value: {}", value);
[INFO] [stderr] 34 | |     };
[INFO] [stderr]    | |______^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]    |
[INFO] [stderr] 28 |     if value <= 9 {
[INFO] [stderr] 29 |         value + 48 // "0" - "9"
[INFO] [stderr] 30 |     } else if value >= 10 && value <= 15 {
[INFO] [stderr] 31 |         value + 87 // "a" - "f"
[INFO] [stderr] 32 |     } else {
[INFO] [stderr] 33 |         panic!("Invalid hex value: {}", value);
[INFO] [stderr]  ...
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/encoding/hex.rs:55:5
[INFO] [stderr]    |
[INFO] [stderr] 55 |     return bytes;
[INFO] [stderr]    |     ^^^^^^^^^^^^^ help: remove `return` as shown: `bytes`
[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/encoding/hex.rs:59:5
[INFO] [stderr]    |
[INFO] [stderr] 59 | /     return if value >= 48 && value <= 57 {
[INFO] [stderr] 60 | |         value - 48 // "0" - "9"
[INFO] [stderr] 61 | |     } else if value >= 65 && value <= 70 {
[INFO] [stderr] 62 | |         value - 55 // "A" - "F"
[INFO] [stderr] ...  |
[INFO] [stderr] 66 | |         panic!("Invalid hex value: {}", value);
[INFO] [stderr] 67 | |     };
[INFO] [stderr]    | |______^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]    |
[INFO] [stderr] 59 |     if value >= 48 && value <= 57 {
[INFO] [stderr] 60 |         value - 48 // "0" - "9"
[INFO] [stderr] 61 |     } else if value >= 65 && value <= 70 {
[INFO] [stderr] 62 |         value - 55 // "A" - "F"
[INFO] [stderr] 63 |     } else if value >= 97 && value <= 102 {
[INFO] [stderr] 64 |         value - 87 // "a" - "f"
[INFO] [stderr]  ...
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/encoding/xor.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 |     return encoded_bytes;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `encoded_bytes`
[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: unused variable: `bytes`
[INFO] [stderr]  --> src/challenges/break_repeating_key_xor.rs:9:9
[INFO] [stderr]   |
[INFO] [stderr] 9 |     let bytes = base64::decode(base64);
[INFO] [stderr]   |         ^^^^^ help: consider using `_bytes` instead
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get`
[INFO] [stderr]  --> src/analysis/hemming_distance.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub fn get(bytes_a: &[u8], bytes_b: &[u8]) -> Result<u8, String> {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]   --> src/analysis/letter_frequency.rs:31:12
[INFO] [stderr]    |
[INFO] [stderr] 31 |         if line.len() == 0 {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `line.is_empty()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::len_zero)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/analysis/letter_frequency.rs:64:9
[INFO] [stderr]    |
[INFO] [stderr] 64 |         *frequency = *frequency / len;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `*frequency /= len`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::assign_op_pattern)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: use of `ok_or` followed by a function call
[INFO] [stderr]   --> src/challenges/detect_single_char_xor.rs:30:12
[INFO] [stderr]    |
[INFO] [stderr] 30 |         }).ok_or(String::from("score collection empty"))?;
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `ok_or_else(|| String::from("score collection empty"))`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::or_fun_call)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#or_fun_call
[INFO] [stderr] 
[INFO] [stderr] warning: identical conversion
[INFO] [stderr]   --> src/challenges/detect_single_char_xor.rs:21:39
[INFO] [stderr]    |
[INFO] [stderr] 21 |       let (key, decoded_bytes, score) = key_range
[INFO] [stderr]    |  _______________________________________^
[INFO] [stderr] 22 | |         .into_iter()
[INFO] [stderr]    | |____________________^ help: consider removing `.into_iter()`: `key_range`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::identity_conversion)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#identity_conversion
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `vec!`
[INFO] [stderr]   --> src/challenges/detect_single_char_xor.rs:24:53
[INFO] [stderr]    |
[INFO] [stderr] 24 |             let decoded_bytes = xor::encode(&bytes, &vec![key]);
[INFO] [stderr]    |                                                     ^^^^^^^^^^ help: you can use a slice directly: `&[key]`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::useless_vec)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_vec
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `vec!`
[INFO] [stderr]  --> src/challenges/single_byte_xor.rs:6:38
[INFO] [stderr]   |
[INFO] [stderr] 6 |     let result = xor::encode(&bytes, &vec![encoding_byte]);
[INFO] [stderr]   |                                      ^^^^^^^^^^^^^^^^^^^^ help: you can use a slice directly: `&[encoding_byte]`
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_vec
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/encoding/base64.rs:65:13
[INFO] [stderr]    |
[INFO] [stderr] 65 |             part1 = part1 << 2;
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^ help: replace it with: `part1 <<= 2`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/encoding/base64.rs:66:13
[INFO] [stderr]    |
[INFO] [stderr] 66 |             part2 = part2 >> 4;
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^ help: replace it with: `part2 >>= 4`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/encoding/base64.rs:68:13
[INFO] [stderr]    |
[INFO] [stderr] 68 |             part1 = part1 << 4;
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^ help: replace it with: `part1 <<= 4`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/encoding/base64.rs:69:13
[INFO] [stderr]    |
[INFO] [stderr] 69 |             part2 = part2 >> 2;
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^ help: replace it with: `part2 >>= 2`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/encoding/base64.rs:71:13
[INFO] [stderr]    |
[INFO] [stderr] 71 |             part1 = part1 << 6;
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^ help: replace it with: `part1 <<= 6`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `bytes`
[INFO] [stderr]  --> src/challenges/break_repeating_key_xor.rs:9:9
[INFO] [stderr]   |
[INFO] [stderr] 9 |     let bytes = base64::decode(base64);
[INFO] [stderr]   |         ^^^^^ help: consider using `_bytes` instead
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]   --> src/analysis/letter_frequency.rs:31:12
[INFO] [stderr]    |
[INFO] [stderr] 31 |         if line.len() == 0 {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `line.is_empty()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::len_zero)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/analysis/letter_frequency.rs:64:9
[INFO] [stderr]    |
[INFO] [stderr] 64 |         *frequency = *frequency / len;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `*frequency /= len`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::assign_op_pattern)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: use of `ok_or` followed by a function call
[INFO] [stderr]   --> src/challenges/detect_single_char_xor.rs:30:12
[INFO] [stderr]    |
[INFO] [stderr] 30 |         }).ok_or(String::from("score collection empty"))?;
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `ok_or_else(|| String::from("score collection empty"))`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::or_fun_call)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#or_fun_call
[INFO] [stderr] 
[INFO] [stderr] warning: identical conversion
[INFO] [stderr]   --> src/challenges/detect_single_char_xor.rs:21:39
[INFO] [stderr]    |
[INFO] [stderr] 21 |       let (key, decoded_bytes, score) = key_range
[INFO] [stderr]    |  _______________________________________^
[INFO] [stderr] 22 | |         .into_iter()
[INFO] [stderr]    | |____________________^ help: consider removing `.into_iter()`: `key_range`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::identity_conversion)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#identity_conversion
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `vec!`
[INFO] [stderr]   --> src/challenges/detect_single_char_xor.rs:24:53
[INFO] [stderr]    |
[INFO] [stderr] 24 |             let decoded_bytes = xor::encode(&bytes, &vec![key]);
[INFO] [stderr]    |                                                     ^^^^^^^^^^ help: you can use a slice directly: `&[key]`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::useless_vec)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_vec
[INFO] [stderr] 
[INFO] [stderr] warning: casting character literal to u8. `char`s are 4 bytes wide in rust, so casting to u8 truncates them
[INFO] [stderr]   --> src/challenges/detect_single_char_xor.rs:53:20
[INFO] [stderr]    |
[INFO] [stderr] 53 |         assert_eq!('X' as u8, info.key);
[INFO] [stderr]    |                    ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::char_lit_as_u8)] on by default
[INFO] [stderr]    = help: Consider using a byte literal instead:
[INFO] [stderr]            b'X'
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#char_lit_as_u8
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `vec!`
[INFO] [stderr]  --> src/challenges/single_byte_xor.rs:6:38
[INFO] [stderr]   |
[INFO] [stderr] 6 |     let result = xor::encode(&bytes, &vec![encoding_byte]);
[INFO] [stderr]   |                                      ^^^^^^^^^^^^^^^^^^^^ help: you can use a slice directly: `&[encoding_byte]`
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_vec
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/encoding/base64.rs:65:13
[INFO] [stderr]    |
[INFO] [stderr] 65 |             part1 = part1 << 2;
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^ help: replace it with: `part1 <<= 2`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/encoding/base64.rs:66:13
[INFO] [stderr]    |
[INFO] [stderr] 66 |             part2 = part2 >> 4;
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^ help: replace it with: `part2 >>= 4`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/encoding/base64.rs:68:13
[INFO] [stderr]    |
[INFO] [stderr] 68 |             part1 = part1 << 4;
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^ help: replace it with: `part1 <<= 4`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/encoding/base64.rs:69:13
[INFO] [stderr]    |
[INFO] [stderr] 69 |             part2 = part2 >> 2;
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^ help: replace it with: `part2 >>= 2`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/encoding/base64.rs:71:13
[INFO] [stderr]    |
[INFO] [stderr] 71 |             part1 = part1 << 6;
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^ help: replace it with: `part1 <<= 6`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.25s
[INFO] running `"docker" "inspect" "f6d5d5fbfdb9c68ab6c9cb612808461bfae21afe26d8762a1c07e1178daa9dad"`
[INFO] running `"docker" "rm" "-f" "f6d5d5fbfdb9c68ab6c9cb612808461bfae21afe26d8762a1c07e1178daa9dad"`
[INFO] [stdout] f6d5d5fbfdb9c68ab6c9cb612808461bfae21afe26d8762a1c07e1178daa9dad