[INFO] updating cached repository bigfeats/crypto
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/bigfeats/crypto
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/bigfeats/crypto" "work/ex/clippy-test-run/sources/stable/gh/bigfeats/crypto"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/bigfeats/crypto'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/bigfeats/crypto" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/bigfeats/crypto"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/bigfeats/crypto'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 79bcbac8fc5f3b0d5aa5f67e04c49fc0c88b6e49
[INFO] sha for GitHub repo bigfeats/crypto: 79bcbac8fc5f3b0d5aa5f67e04c49fc0c88b6e49
[INFO] validating manifest of bigfeats/crypto 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 bigfeats/crypto 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 bigfeats/crypto
[INFO] finished frobbing bigfeats/crypto
[INFO] frobbed toml for bigfeats/crypto written to work/ex/clippy-test-run/sources/stable/gh/bigfeats/crypto/Cargo.toml
[INFO] started frobbing bigfeats/crypto
[INFO] finished frobbing bigfeats/crypto
[INFO] frobbed toml for bigfeats/crypto written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/bigfeats/crypto/Cargo.toml
[INFO] crate bigfeats/crypto 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 bigfeats/crypto against stable+rustflags=-Dclippy::into_iter_on_array for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-6/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/bigfeats/crypto:/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] 140951a8a5de1d2e47fa2b1b719351e726ae1ff7496e8bf40956a40afd3935c9
[INFO] running `"docker" "start" "-a" "140951a8a5de1d2e47fa2b1b719351e726ae1ff7496e8bf40956a40afd3935c9"`
[INFO] [stderr]     Checking crypto v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/algorithms/utils/math.rs:37:5
[INFO] [stderr]    |
[INFO] [stderr] 37 |     return Ok(t as u16);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Ok(t as u16)`
[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/algorithms/utils/mod.rs:19:26
[INFO] [stderr]    |
[INFO] [stderr] 19 |         Err(_message) => return Err(format!("Invalid key, expected integer: {}", key))
[INFO] [stderr]    |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Err(format!("Invalid key, expected integer: {}", key))`
[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/algorithms/utils/math.rs:37:5
[INFO] [stderr]    |
[INFO] [stderr] 37 |     return Ok(t as u16);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Ok(t as u16)`
[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/algorithms/utils/mod.rs:19:26
[INFO] [stderr]    |
[INFO] [stderr] 19 |         Err(_message) => return Err(format!("Invalid key, expected integer: {}", key))
[INFO] [stderr]    |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Err(format!("Invalid key, expected integer: {}", key))`
[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: single-character string constant used as pattern
[INFO] [stderr]   --> src/algorithms/affine.rs:19:37
[INFO] [stderr]    |
[INFO] [stderr] 19 |     let keys: Vec<&str> = key.split(",").collect();
[INFO] [stderr]    |                                     ^^^ help: try using a char instead: `','`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::single_char_pattern)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to u16 may become silently lossy if types change
[INFO] [stderr]   --> src/algorithms/multiply.rs:43:24
[INFO] [stderr]    |
[INFO] [stderr] 43 |     let offset_index = letter_index as u16 * mult;
[INFO] [stderr]    |                        ^^^^^^^^^^^^^^^^^^^ help: try: `u16::from(letter_index)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::cast_lossless)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u16 to i32 may become silently lossy if types change
[INFO] [stderr]   --> src/algorithms/multiply.rs:45:23
[INFO] [stderr]    |
[INFO] [stderr] 45 |     utils::get_letter(offset_index as i32)
[INFO] [stderr]    |                       ^^^^^^^^^^^^^^^^^^^ help: try: `i32::from(offset_index)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to i32 may become silently lossy if types change
[INFO] [stderr]   --> src/algorithms/shift.rs:34:24
[INFO] [stderr]    |
[INFO] [stderr] 34 |     let offset_index = letter_index as i32 + offset;
[INFO] [stderr]    |                        ^^^^^^^^^^^^^^^^^^^ help: try: `i32::from(letter_index)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u16 to i32 may become silently lossy if types change
[INFO] [stderr]  --> src/algorithms/utils/math.rs:5:19
[INFO] [stderr]   |
[INFO] [stderr] 5 |     let modulus = modulus as i32;
[INFO] [stderr]   |                   ^^^^^^^^^^^^^^ help: try: `i32::from(modulus)`
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u16 to i32 may become silently lossy if types change
[INFO] [stderr]   --> src/algorithms/utils/math.rs:12:17
[INFO] [stderr]    |
[INFO] [stderr] 12 |     let value = value as i32;
[INFO] [stderr]    |                 ^^^^^^^^^^^^ help: try: `i32::from(value)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u16 to i32 may become silently lossy if types change
[INFO] [stderr]   --> src/algorithms/utils/math.rs:13:19
[INFO] [stderr]    |
[INFO] [stderr] 13 |     let modulus = modulus as i32;
[INFO] [stderr]    |                   ^^^^^^^^^^^^^^ help: try: `i32::from(modulus)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/algorithms/utils/math.rs:34:9
[INFO] [stderr]    |
[INFO] [stderr] 34 |         t = t + modulus
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^ help: replace it with: `t += modulus`
[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: casting character literal to u8. `char`s are 4 bytes wide in rust, so casting to u8 truncates them
[INFO] [stderr]  --> src/algorithms/utils/mod.rs:7:20
[INFO] [stderr]   |
[INFO] [stderr] 7 |     letter as u8 - 'a' as u8 + 1u8
[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'a'
[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: casting character literal to u8. `char`s are 4 bytes wide in rust, so casting to u8 truncates them
[INFO] [stderr]   --> src/algorithms/utils/mod.rs:13:6
[INFO] [stderr]    |
[INFO] [stderr] 13 |     ('a' as u8 + mod_offset) as char
[INFO] [stderr]    |      ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: Consider using a byte literal instead:
[INFO] [stderr]            b'a'
[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: writing `&String` instead of `&str` involves a new object where a slice will do.
[INFO] [stderr]  --> src/algorithms/mod.rs:7:37
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub fn encrypt(requested_algorithm: &String, message: &String, key: &String) -> Result<String, String> {
[INFO] [stderr]   |                                     ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(clippy::ptr_arg)] on by default
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] help: change this to
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub fn encrypt(requested_algorithm: &str, message: &String, key: &String) -> Result<String, String> {
[INFO] [stderr]   |                                     ^^^^
[INFO] [stderr] help: change `requested_algorithm.as_str()` to
[INFO] [stderr]   |
[INFO] [stderr] 8 |     match requested_algorithm {
[INFO] [stderr]   |           ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&String` instead of `&str` involves a new object where a slice will do.
[INFO] [stderr]  --> src/algorithms/mod.rs:7:55
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub fn encrypt(requested_algorithm: &String, message: &String, key: &String) -> Result<String, String> {
[INFO] [stderr]   |                                                       ^^^^^^^ help: change this to: `&str`
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&String` instead of `&str` involves a new object where a slice will do.
[INFO] [stderr]  --> src/algorithms/mod.rs:7:69
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub fn encrypt(requested_algorithm: &String, message: &String, key: &String) -> Result<String, String> {
[INFO] [stderr]   |                                                                     ^^^^^^^ help: change this to: `&str`
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&String` instead of `&str` involves a new object where a slice will do.
[INFO] [stderr]   --> src/algorithms/mod.rs:17:37
[INFO] [stderr]    |
[INFO] [stderr] 17 | pub fn decrypt(requested_algorithm: &String, message: &String, key: &String) -> Result<String, String> {
[INFO] [stderr]    |                                     ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] help: change this to
[INFO] [stderr]    |
[INFO] [stderr] 17 | pub fn decrypt(requested_algorithm: &str, message: &String, key: &String) -> Result<String, String> {
[INFO] [stderr]    |                                     ^^^^
[INFO] [stderr] help: change `requested_algorithm.as_str()` to
[INFO] [stderr]    |
[INFO] [stderr] 18 |     match requested_algorithm {
[INFO] [stderr]    |           ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&String` instead of `&str` involves a new object where a slice will do.
[INFO] [stderr]   --> src/algorithms/mod.rs:17:55
[INFO] [stderr]    |
[INFO] [stderr] 17 | pub fn decrypt(requested_algorithm: &String, message: &String, key: &String) -> Result<String, String> {
[INFO] [stderr]    |                                                       ^^^^^^^ help: change this to: `&str`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&String` instead of `&str` involves a new object where a slice will do.
[INFO] [stderr]   --> src/algorithms/mod.rs:17:69
[INFO] [stderr]    |
[INFO] [stderr] 17 | pub fn decrypt(requested_algorithm: &String, message: &String, key: &String) -> Result<String, String> {
[INFO] [stderr]    |                                                                     ^^^^^^^ help: change this to: `&str`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: `if _ { .. } else { .. }` is an expression
[INFO] [stderr]   --> src/lib.rs:5:5
[INFO] [stderr]    |
[INFO] [stderr] 5  | /     let result;
[INFO] [stderr] 6  | |     if config.encrypt {
[INFO] [stderr] 7  | |         result = algorithms::encrypt(&config.algorithm, &config.message, &config.key);
[INFO] [stderr] 8  | |     } else {
[INFO] [stderr] 9  | |         result = algorithms::decrypt(&config.algorithm, &config.message, &config.key);
[INFO] [stderr] 10 | |     }
[INFO] [stderr]    | |_____^ help: it is more idiomatic to write: `let result = if config.encrypt { algorithms::encrypt(&config.algorithm, &config.message, &config.key) } else { algorithms::decrypt(&config.algorithm, &config.message, &config.key) };`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::useless_let_if_seq)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_let_if_seq
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]   --> src/algorithms/affine.rs:19:37
[INFO] [stderr]    |
[INFO] [stderr] 19 |     let keys: Vec<&str> = key.split(",").collect();
[INFO] [stderr]    |                                     ^^^ help: try using a char instead: `','`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::single_char_pattern)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to u16 may become silently lossy if types change
[INFO] [stderr]   --> src/algorithms/multiply.rs:43:24
[INFO] [stderr]    |
[INFO] [stderr] 43 |     let offset_index = letter_index as u16 * mult;
[INFO] [stderr]    |                        ^^^^^^^^^^^^^^^^^^^ help: try: `u16::from(letter_index)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::cast_lossless)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u16 to i32 may become silently lossy if types change
[INFO] [stderr]   --> src/algorithms/multiply.rs:45:23
[INFO] [stderr]    |
[INFO] [stderr] 45 |     utils::get_letter(offset_index as i32)
[INFO] [stderr]    |                       ^^^^^^^^^^^^^^^^^^^ help: try: `i32::from(offset_index)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to i32 may become silently lossy if types change
[INFO] [stderr]   --> src/algorithms/shift.rs:34:24
[INFO] [stderr]    |
[INFO] [stderr] 34 |     let offset_index = letter_index as i32 + offset;
[INFO] [stderr]    |                        ^^^^^^^^^^^^^^^^^^^ help: try: `i32::from(letter_index)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u16 to i32 may become silently lossy if types change
[INFO] [stderr]  --> src/algorithms/utils/math.rs:5:19
[INFO] [stderr]   |
[INFO] [stderr] 5 |     let modulus = modulus as i32;
[INFO] [stderr]   |                   ^^^^^^^^^^^^^^ help: try: `i32::from(modulus)`
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u16 to i32 may become silently lossy if types change
[INFO] [stderr]   --> src/algorithms/utils/math.rs:12:17
[INFO] [stderr]    |
[INFO] [stderr] 12 |     let value = value as i32;
[INFO] [stderr]    |                 ^^^^^^^^^^^^ help: try: `i32::from(value)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u16 to i32 may become silently lossy if types change
[INFO] [stderr]   --> src/algorithms/utils/math.rs:13:19
[INFO] [stderr]    |
[INFO] [stderr] 13 |     let modulus = modulus as i32;
[INFO] [stderr]    |                   ^^^^^^^^^^^^^^ help: try: `i32::from(modulus)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/algorithms/utils/math.rs:34:9
[INFO] [stderr]    |
[INFO] [stderr] 34 |         t = t + modulus
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^ help: replace it with: `t += modulus`
[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: casting character literal to u8. `char`s are 4 bytes wide in rust, so casting to u8 truncates them
[INFO] [stderr]  --> src/algorithms/utils/mod.rs:7:20
[INFO] [stderr]   |
[INFO] [stderr] 7 |     letter as u8 - 'a' as u8 + 1u8
[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'a'
[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: casting character literal to u8. `char`s are 4 bytes wide in rust, so casting to u8 truncates them
[INFO] [stderr]   --> src/algorithms/utils/mod.rs:13:6
[INFO] [stderr]    |
[INFO] [stderr] 13 |     ('a' as u8 + mod_offset) as char
[INFO] [stderr]    |      ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: Consider using a byte literal instead:
[INFO] [stderr]            b'a'
[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: writing `&String` instead of `&str` involves a new object where a slice will do.
[INFO] [stderr]  --> src/algorithms/mod.rs:7:37
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub fn encrypt(requested_algorithm: &String, message: &String, key: &String) -> Result<String, String> {
[INFO] [stderr]   |                                     ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(clippy::ptr_arg)] on by default
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] help: change this to
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub fn encrypt(requested_algorithm: &str, message: &String, key: &String) -> Result<String, String> {
[INFO] [stderr]   |                                     ^^^^
[INFO] [stderr] help: change `requested_algorithm.as_str()` to
[INFO] [stderr]   |
[INFO] [stderr] 8 |     match requested_algorithm {
[INFO] [stderr]   |           ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&String` instead of `&str` involves a new object where a slice will do.
[INFO] [stderr]  --> src/algorithms/mod.rs:7:55
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub fn encrypt(requested_algorithm: &String, message: &String, key: &String) -> Result<String, String> {
[INFO] [stderr]   |                                                       ^^^^^^^ help: change this to: `&str`
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&String` instead of `&str` involves a new object where a slice will do.
[INFO] [stderr]  --> src/algorithms/mod.rs:7:69
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub fn encrypt(requested_algorithm: &String, message: &String, key: &String) -> Result<String, String> {
[INFO] [stderr]   |                                                                     ^^^^^^^ help: change this to: `&str`
[INFO] [stderr]   |
[INFO] [stderr]   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&String` instead of `&str` involves a new object where a slice will do.
[INFO] [stderr]   --> src/algorithms/mod.rs:17:37
[INFO] [stderr]    |
[INFO] [stderr] 17 | pub fn decrypt(requested_algorithm: &String, message: &String, key: &String) -> Result<String, String> {
[INFO] [stderr]    |                                     ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] help: change this to
[INFO] [stderr]    |
[INFO] [stderr] 17 | pub fn decrypt(requested_algorithm: &str, message: &String, key: &String) -> Result<String, String> {
[INFO] [stderr]    |                                     ^^^^
[INFO] [stderr] help: change `requested_algorithm.as_str()` to
[INFO] [stderr]    |
[INFO] [stderr] 18 |     match requested_algorithm {
[INFO] [stderr]    |           ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&String` instead of `&str` involves a new object where a slice will do.
[INFO] [stderr]   --> src/algorithms/mod.rs:17:55
[INFO] [stderr]    |
[INFO] [stderr] 17 | pub fn decrypt(requested_algorithm: &String, message: &String, key: &String) -> Result<String, String> {
[INFO] [stderr]    |                                                       ^^^^^^^ help: change this to: `&str`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: writing `&String` instead of `&str` involves a new object where a slice will do.
[INFO] [stderr]   --> src/algorithms/mod.rs:17:69
[INFO] [stderr]    |
[INFO] [stderr] 17 | pub fn decrypt(requested_algorithm: &String, message: &String, key: &String) -> Result<String, String> {
[INFO] [stderr]    |                                                                     ^^^^^^^ help: change this to: `&str`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
[INFO] [stderr] 
[INFO] [stderr] warning: `if _ { .. } else { .. }` is an expression
[INFO] [stderr]   --> src/lib.rs:5:5
[INFO] [stderr]    |
[INFO] [stderr] 5  | /     let result;
[INFO] [stderr] 6  | |     if config.encrypt {
[INFO] [stderr] 7  | |         result = algorithms::encrypt(&config.algorithm, &config.message, &config.key);
[INFO] [stderr] 8  | |     } else {
[INFO] [stderr] 9  | |         result = algorithms::decrypt(&config.algorithm, &config.message, &config.key);
[INFO] [stderr] 10 | |     }
[INFO] [stderr]    | |_____^ help: it is more idiomatic to write: `let result = if config.encrypt { algorithms::encrypt(&config.algorithm, &config.message, &config.key) } else { algorithms::decrypt(&config.algorithm, &config.message, &config.key) };`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::useless_let_if_seq)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_let_if_seq
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.73s
[INFO] running `"docker" "inspect" "140951a8a5de1d2e47fa2b1b719351e726ae1ff7496e8bf40956a40afd3935c9"`
[INFO] running `"docker" "rm" "-f" "140951a8a5de1d2e47fa2b1b719351e726ae1ff7496e8bf40956a40afd3935c9"`
[INFO] [stdout] 140951a8a5de1d2e47fa2b1b719351e726ae1ff7496e8bf40956a40afd3935c9