[INFO] updating cached repository foudfou/cryptopals
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/foudfou/cryptopals
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/foudfou/cryptopals" "work/ex/clippy-test-run/sources/stable/gh/foudfou/cryptopals"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/foudfou/cryptopals'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/foudfou/cryptopals" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/foudfou/cryptopals"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/foudfou/cryptopals'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 23c327f1d3b7407c21cee301e15b9727539cb3ef
[INFO] sha for GitHub repo foudfou/cryptopals: 23c327f1d3b7407c21cee301e15b9727539cb3ef
[INFO] validating manifest of foudfou/cryptopals 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 foudfou/cryptopals 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 foudfou/cryptopals
[INFO] finished frobbing foudfou/cryptopals
[INFO] frobbed toml for foudfou/cryptopals written to work/ex/clippy-test-run/sources/stable/gh/foudfou/cryptopals/Cargo.toml
[INFO] started frobbing foudfou/cryptopals
[INFO] finished frobbing foudfou/cryptopals
[INFO] frobbed toml for foudfou/cryptopals written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/foudfou/cryptopals/Cargo.toml
[INFO] crate foudfou/cryptopals 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 foudfou/cryptopals against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-5/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/foudfou/cryptopals:/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" "-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] 338bcc4f8e01528ab2b46f42e9a6c4268851f1c1ebd4afccb3f4f80fc83a576a
[INFO] running `"docker" "start" "-a" "338bcc4f8e01528ab2b46f42e9a6c4268851f1c1ebd4afccb3f4f80fc83a576a"`
[INFO] [stderr]     Checking cryptopals v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/b64.rs:51:29
[INFO] [stderr]    |
[INFO] [stderr] 51 |         a.push((triple[0] & 0b11111100) >> 2);
[INFO] [stderr]    |                             ^^^^^^^^^^ help: consider: `0b1111_1100`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::unreadable_literal)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around method argument
[INFO] [stderr]   --> src/b64.rs:52:16
[INFO] [stderr]    |
[INFO] [stderr] 52 |         a.push(((triple[0] & 0b00000011) << 4));
[INFO] [stderr]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_parens)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: Consider removing unnecessary double parentheses
[INFO] [stderr]   --> src/b64.rs:52:16
[INFO] [stderr]    |
[INFO] [stderr] 52 |         a.push(((triple[0] & 0b00000011) << 4));
[INFO] [stderr]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::double_parens)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#double_parens
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/b64.rs:52:30
[INFO] [stderr]    |
[INFO] [stderr] 52 |         a.push(((triple[0] & 0b00000011) << 4));
[INFO] [stderr]    |                              ^^^^^^^^^^ help: consider: `0b0000_0011`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/b64.rs:54:34
[INFO] [stderr]    |
[INFO] [stderr] 54 |             a[1] += (triple[1] & 0b11110000) >> 4;
[INFO] [stderr]    |                                  ^^^^^^^^^^ help: consider: `0b1111_0000`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/b64.rs:55:33
[INFO] [stderr]    |
[INFO] [stderr] 55 |             a.push((triple[1] & 0b00001111) << 2);
[INFO] [stderr]    |                                 ^^^^^^^^^^ help: consider: `0b0000_1111`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/b64.rs:58:38
[INFO] [stderr]    |
[INFO] [stderr] 58 |                 a[2] += (triple[2] & 0b11000000) >> 6;
[INFO] [stderr]    |                                      ^^^^^^^^^^ help: consider: `0b1100_0000`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/b64.rs:59:36
[INFO] [stderr]    |
[INFO] [stderr] 59 |                 a.push(triple[2] & 0b00111111);
[INFO] [stderr]    |                                    ^^^^^^^^^^ help: consider: `0b0011_1111`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/b64.rs:121:17
[INFO] [stderr]     |
[INFO] [stderr] 121 |                 return Err(io::Error::new(io::ErrorKind::InvalidData, "Unsupported character"));
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Err(io::Error::new(io::ErrorKind::InvalidData, "Unsupported character"))`
[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: long literal lacking separators
[INFO] [stderr]    --> src/b64.rs:125:30
[INFO] [stderr]     |
[INFO] [stderr] 125 |         res.push(((four[0] & 0b00111111) << 2) +
[INFO] [stderr]     |                              ^^^^^^^^^^ help: consider: `0b0011_1111`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]    --> src/b64.rs:126:30
[INFO] [stderr]     |
[INFO] [stderr] 126 |                  ((four[1] & 0b00110000) >> 4));
[INFO] [stderr]     |                              ^^^^^^^^^^ help: consider: `0b0011_0000`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]    --> src/b64.rs:128:34
[INFO] [stderr]     |
[INFO] [stderr] 128 |             res.push(((four[1] & 0b00001111) << 4) +
[INFO] [stderr]     |                                  ^^^^^^^^^^ help: consider: `0b0000_1111`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]    --> src/b64.rs:129:34
[INFO] [stderr]     |
[INFO] [stderr] 129 |                      ((four[2] & 0b00111100) >> 2));
[INFO] [stderr]     |                                  ^^^^^^^^^^ help: consider: `0b0011_1100`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]    --> src/b64.rs:131:38
[INFO] [stderr]     |
[INFO] [stderr] 131 |                 res.push(((four[2] & 0b00000011) << 6) +
[INFO] [stderr]     |                                      ^^^^^^^^^^ help: consider: `0b0000_0011`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]    --> src/b64.rs:132:37
[INFO] [stderr]     |
[INFO] [stderr] 132 |                          (four[3] & 0b00111111));
[INFO] [stderr]     |                                     ^^^^^^^^^^ help: consider: `0b0011_1111`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/b64.rs:51:29
[INFO] [stderr]    |
[INFO] [stderr] 51 |         a.push((triple[0] & 0b11111100) >> 2);
[INFO] [stderr]    |                             ^^^^^^^^^^ help: consider: `0b1111_1100`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::unreadable_literal)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around method argument
[INFO] [stderr]   --> src/b64.rs:52:16
[INFO] [stderr]    |
[INFO] [stderr] 52 |         a.push(((triple[0] & 0b00000011) << 4));
[INFO] [stderr]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_parens)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: Consider removing unnecessary double parentheses
[INFO] [stderr]   --> src/b64.rs:52:16
[INFO] [stderr]    |
[INFO] [stderr] 52 |         a.push(((triple[0] & 0b00000011) << 4));
[INFO] [stderr]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::double_parens)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#double_parens
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/b64.rs:52:30
[INFO] [stderr]    |
[INFO] [stderr] 52 |         a.push(((triple[0] & 0b00000011) << 4));
[INFO] [stderr]    |                              ^^^^^^^^^^ help: consider: `0b0000_0011`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/b64.rs:54:34
[INFO] [stderr]    |
[INFO] [stderr] 54 |             a[1] += (triple[1] & 0b11110000) >> 4;
[INFO] [stderr]    |                                  ^^^^^^^^^^ help: consider: `0b1111_0000`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/b64.rs:55:33
[INFO] [stderr]    |
[INFO] [stderr] 55 |             a.push((triple[1] & 0b00001111) << 2);
[INFO] [stderr]    |                                 ^^^^^^^^^^ help: consider: `0b0000_1111`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/b64.rs:58:38
[INFO] [stderr]    |
[INFO] [stderr] 58 |                 a[2] += (triple[2] & 0b11000000) >> 6;
[INFO] [stderr]    |                                      ^^^^^^^^^^ help: consider: `0b1100_0000`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]   --> src/b64.rs:59:36
[INFO] [stderr]    |
[INFO] [stderr] 59 |                 a.push(triple[2] & 0b00111111);
[INFO] [stderr]    |                                    ^^^^^^^^^^ help: consider: `0b0011_1111`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/b64.rs:121:17
[INFO] [stderr]     |
[INFO] [stderr] 121 |                 return Err(io::Error::new(io::ErrorKind::InvalidData, "Unsupported character"));
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Err(io::Error::new(io::ErrorKind::InvalidData, "Unsupported character"))`
[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: long literal lacking separators
[INFO] [stderr]    --> src/b64.rs:125:30
[INFO] [stderr]     |
[INFO] [stderr] 125 |         res.push(((four[0] & 0b00111111) << 2) +
[INFO] [stderr]     |                              ^^^^^^^^^^ help: consider: `0b0011_1111`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]    --> src/b64.rs:126:30
[INFO] [stderr]     |
[INFO] [stderr] 126 |                  ((four[1] & 0b00110000) >> 4));
[INFO] [stderr]     |                              ^^^^^^^^^^ help: consider: `0b0011_0000`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]    --> src/b64.rs:128:34
[INFO] [stderr]     |
[INFO] [stderr] 128 |             res.push(((four[1] & 0b00001111) << 4) +
[INFO] [stderr]     |                                  ^^^^^^^^^^ help: consider: `0b0000_1111`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]    --> src/b64.rs:129:34
[INFO] [stderr]     |
[INFO] [stderr] 129 |                      ((four[2] & 0b00111100) >> 2));
[INFO] [stderr]     |                                  ^^^^^^^^^^ help: consider: `0b0011_1100`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]    --> src/b64.rs:131:38
[INFO] [stderr]     |
[INFO] [stderr] 131 |                 res.push(((four[2] & 0b00000011) << 6) +
[INFO] [stderr]     |                                      ^^^^^^^^^^ help: consider: `0b0000_0011`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[INFO] [stderr] 
[INFO] [stderr] warning: long literal lacking separators
[INFO] [stderr]    --> src/b64.rs:132:37
[INFO] [stderr]     |
[INFO] [stderr] 132 |                          (four[3] & 0b00111111));
[INFO] [stderr]     |                                     ^^^^^^^^^^ help: consider: `0b0011_1111`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unreadable_literal
[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/b64.rs:102:21
[INFO] [stderr]     |
[INFO] [stderr] 102 |             if c >= 'A' as u8 && c <= 'Z' as u8 {
[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/b64.rs:102:39
[INFO] [stderr]     |
[INFO] [stderr] 102 |             if c >= 'A' as u8 && c <= 'Z' as u8 {
[INFO] [stderr]     |                                       ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: Consider using a byte literal instead:
[INFO] [stderr]             b'Z'
[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/b64.rs:103:24
[INFO] [stderr]     |
[INFO] [stderr] 103 |                 Ok(c - 'A' as u8)
[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: casting character literal to u8. `char`s are 4 bytes wide in rust, so casting to u8 truncates them
[INFO] [stderr]    --> src/b64.rs:105:26
[INFO] [stderr]     |
[INFO] [stderr] 105 |             else if c >= 'a' as u8 && c <= 'z' as u8 {
[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: casting character literal to u8. `char`s are 4 bytes wide in rust, so casting to u8 truncates them
[INFO] [stderr]    --> src/b64.rs:105:44
[INFO] [stderr]     |
[INFO] [stderr] 105 |             else if c >= 'a' as u8 && c <= 'z' as u8 {
[INFO] [stderr]     |                                            ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: Consider using a byte literal instead:
[INFO] [stderr]             b'z'
[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/b64.rs:106:24
[INFO] [stderr]     |
[INFO] [stderr] 106 |                 Ok(c - 'a' as u8 + 26)
[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: casting character literal to u8. `char`s are 4 bytes wide in rust, so casting to u8 truncates them
[INFO] [stderr]    --> src/b64.rs:108:26
[INFO] [stderr]     |
[INFO] [stderr] 108 |             else if c >= '0' as u8 && c <= '9' as u8 {
[INFO] [stderr]     |                          ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: Consider using a byte literal instead:
[INFO] [stderr]             b'0'
[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/b64.rs:108:44
[INFO] [stderr]     |
[INFO] [stderr] 108 |             else if c >= '0' as u8 && c <= '9' as u8 {
[INFO] [stderr]     |                                            ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: Consider using a byte literal instead:
[INFO] [stderr]             b'9'
[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/b64.rs:109:24
[INFO] [stderr]     |
[INFO] [stderr] 109 |                 Ok(c - '0' as u8 + 52)
[INFO] [stderr]     |                        ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: Consider using a byte literal instead:
[INFO] [stderr]             b'0'
[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/b64.rs:111:26
[INFO] [stderr]     |
[INFO] [stderr] 111 |             else if c == '+' as u8 {
[INFO] [stderr]     |                          ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: Consider using a byte literal instead:
[INFO] [stderr]             b'+'
[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/b64.rs:114:26
[INFO] [stderr]     |
[INFO] [stderr] 114 |             else if c == '/' as u8 {
[INFO] [stderr]     |                          ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: Consider using a byte literal instead:
[INFO] [stderr]             b'/'
[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/b64.rs:117:26
[INFO] [stderr]     |
[INFO] [stderr] 117 |             else if c == '=' as u8 {
[INFO] [stderr]     |                          ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: Consider using a byte literal instead:
[INFO] [stderr]             b'='
[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/b64.rs:127:24
[INFO] [stderr]     |
[INFO] [stderr] 127 |         if chunk[2] != '=' as u8 {
[INFO] [stderr]     |                        ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: Consider using a byte literal instead:
[INFO] [stderr]             b'='
[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/b64.rs:130:28
[INFO] [stderr]     |
[INFO] [stderr] 130 |             if chunk[3] != '=' as u8 {
[INFO] [stderr]     |                            ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: Consider using a byte literal instead:
[INFO] [stderr]             b'='
[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 u8 to u32 may become silently lossy if types change
[INFO] [stderr]   --> src/xor.rs:93:44
[INFO] [stderr]    |
[INFO] [stderr] 93 |             .fold(0, |acc, (&x, &y)| acc + popcount(x as u64 ^ y as u64) as u32)
[INFO] [stderr]    |                                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `u32::from(popcount(x as u64 ^ y as u64))`
[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 u8 to u64 may become silently lossy if types change
[INFO] [stderr]   --> src/xor.rs:93:53
[INFO] [stderr]    |
[INFO] [stderr] 93 |             .fold(0, |acc, (&x, &y)| acc + popcount(x as u64 ^ y as u64) as u32)
[INFO] [stderr]    |                                                     ^^^^^^^^ help: try: `u64::from(x)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to u64 may become silently lossy if types change
[INFO] [stderr]   --> src/xor.rs:93:64
[INFO] [stderr]    |
[INFO] [stderr] 93 |             .fold(0, |acc, (&x, &y)| acc + popcount(x as u64 ^ y as u64) as u32)
[INFO] [stderr]    |                                                                ^^^^^^^^ help: try: `u64::from(y)`
[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: an inclusive range would be more readable
[INFO] [stderr]    --> src/xor.rs:100:20
[INFO] [stderr]     |
[INFO] [stderr] 100 |     for keysize in 2..(cmp::min(40, cipher.len() / 2) + 1) {
[INFO] [stderr]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `2..=cmp::min(40, cipher.len() / 2)`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::range_plus_one)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#range_plus_one
[INFO] [stderr] 
[INFO] [stderr] warning: use of `or_insert` followed by a function call
[INFO] [stderr]    --> src/xor.rs:110:56
[INFO] [stderr]     |
[INFO] [stderr] 110 |         let ksizes = keysizes_by_dist.entry(dist_norm).or_insert(Vec::new());
[INFO] [stderr]     |                                                        ^^^^^^^^^^^^^^^^^^^^^ help: try this: `or_insert_with(Vec::new)`
[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: You are using an explicit closure for cloning elements
[INFO] [stderr]    --> src/xor.rs:114:5
[INFO] [stderr]     |
[INFO] [stderr] 114 | /     keysizes_by_dist.iter()
[INFO] [stderr] 115 | |         .flat_map(|(_dist, ksizes)| ksizes)
[INFO] [stderr] 116 | |         .map(|&size| size)
[INFO] [stderr]     | |__________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::map_clone)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#map_clone
[INFO] [stderr] help: Consider calling the dedicated `cloned` method
[INFO] [stderr]     |
[INFO] [stderr] 114 |     keysizes_by_dist.iter()
[INFO] [stderr] 115 |         .flat_map(|(_dist, ksizes)| ksizes).cloned()
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: the variable `line_idx` is used as a loop counter. Consider using `for (line_idx, item) in BufReader::new(file).lines().enumerate()` or similar iterators
[INFO] [stderr]   --> src/aes.rs:64:21
[INFO] [stderr]    |
[INFO] [stderr] 64 |         for line in BufReader::new(file).lines() {
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::explicit_counter_loop)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#explicit_counter_loop
[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/b64.rs:102:21
[INFO] [stderr]     |
[INFO] [stderr] 102 |             if c >= 'A' as u8 && c <= 'Z' as u8 {
[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/b64.rs:102:39
[INFO] [stderr]     |
[INFO] [stderr] 102 |             if c >= 'A' as u8 && c <= 'Z' as u8 {
[INFO] [stderr]     |                                       ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: Consider using a byte literal instead:
[INFO] [stderr]             b'Z'
[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/b64.rs:103:24
[INFO] [stderr]     |
[INFO] [stderr] 103 |                 Ok(c - 'A' as u8)
[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: casting character literal to u8. `char`s are 4 bytes wide in rust, so casting to u8 truncates them
[INFO] [stderr]    --> src/b64.rs:105:26
[INFO] [stderr]     |
[INFO] [stderr] 105 |             else if c >= 'a' as u8 && c <= 'z' as u8 {
[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: casting character literal to u8. `char`s are 4 bytes wide in rust, so casting to u8 truncates them
[INFO] [stderr]    --> src/b64.rs:105:44
[INFO] [stderr]     |
[INFO] [stderr] 105 |             else if c >= 'a' as u8 && c <= 'z' as u8 {
[INFO] [stderr]     |                                            ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: Consider using a byte literal instead:
[INFO] [stderr]             b'z'
[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/b64.rs:106:24
[INFO] [stderr]     |
[INFO] [stderr] 106 |                 Ok(c - 'a' as u8 + 26)
[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: casting character literal to u8. `char`s are 4 bytes wide in rust, so casting to u8 truncates them
[INFO] [stderr]    --> src/b64.rs:108:26
[INFO] [stderr]     |
[INFO] [stderr] 108 |             else if c >= '0' as u8 && c <= '9' as u8 {
[INFO] [stderr]     |                          ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: Consider using a byte literal instead:
[INFO] [stderr]             b'0'
[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/b64.rs:108:44
[INFO] [stderr]     |
[INFO] [stderr] 108 |             else if c >= '0' as u8 && c <= '9' as u8 {
[INFO] [stderr]     |                                            ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: Consider using a byte literal instead:
[INFO] [stderr]             b'9'
[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/b64.rs:109:24
[INFO] [stderr]     |
[INFO] [stderr] 109 |                 Ok(c - '0' as u8 + 52)
[INFO] [stderr]     |                        ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: Consider using a byte literal instead:
[INFO] [stderr]             b'0'
[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/b64.rs:111:26
[INFO] [stderr]     |
[INFO] [stderr] 111 |             else if c == '+' as u8 {
[INFO] [stderr]     |                          ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: Consider using a byte literal instead:
[INFO] [stderr]             b'+'
[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/b64.rs:114:26
[INFO] [stderr]     |
[INFO] [stderr] 114 |             else if c == '/' as u8 {
[INFO] [stderr]     |                          ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: Consider using a byte literal instead:
[INFO] [stderr]             b'/'
[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/b64.rs:117:26
[INFO] [stderr]     |
[INFO] [stderr] 117 |             else if c == '=' as u8 {
[INFO] [stderr]     |                          ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: Consider using a byte literal instead:
[INFO] [stderr]             b'='
[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/b64.rs:127:24
[INFO] [stderr]     |
[INFO] [stderr] 127 |         if chunk[2] != '=' as u8 {
[INFO] [stderr]     |                        ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: Consider using a byte literal instead:
[INFO] [stderr]             b'='
[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/b64.rs:130:28
[INFO] [stderr]     |
[INFO] [stderr] 130 |             if chunk[3] != '=' as u8 {
[INFO] [stderr]     |                            ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: Consider using a byte literal instead:
[INFO] [stderr]             b'='
[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 u8 to u32 may become silently lossy if types change
[INFO] [stderr]   --> src/xor.rs:93:44
[INFO] [stderr]    |
[INFO] [stderr] 93 |             .fold(0, |acc, (&x, &y)| acc + popcount(x as u64 ^ y as u64) as u32)
[INFO] [stderr]    |                                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `u32::from(popcount(x as u64 ^ y as u64))`
[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 u8 to u64 may become silently lossy if types change
[INFO] [stderr]   --> src/xor.rs:93:53
[INFO] [stderr]    |
[INFO] [stderr] 93 |             .fold(0, |acc, (&x, &y)| acc + popcount(x as u64 ^ y as u64) as u32)
[INFO] [stderr]    |                                                     ^^^^^^^^ help: try: `u64::from(x)`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#cast_lossless
[INFO] [stderr] 
[INFO] [stderr] warning: casting u8 to u64 may become silently lossy if types change
[INFO] [stderr]   --> src/xor.rs:93:64
[INFO] [stderr]    |
[INFO] [stderr] 93 |             .fold(0, |acc, (&x, &y)| acc + popcount(x as u64 ^ y as u64) as u32)
[INFO] [stderr]    |                                                                ^^^^^^^^ help: try: `u64::from(y)`
[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: an inclusive range would be more readable
[INFO] [stderr]    --> src/xor.rs:100:20
[INFO] [stderr]     |
[INFO] [stderr] 100 |     for keysize in 2..(cmp::min(40, cipher.len() / 2) + 1) {
[INFO] [stderr]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use: `2..=cmp::min(40, cipher.len() / 2)`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::range_plus_one)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#range_plus_one
[INFO] [stderr] 
[INFO] [stderr] warning: use of `or_insert` followed by a function call
[INFO] [stderr]    --> src/xor.rs:110:56
[INFO] [stderr]     |
[INFO] [stderr] 110 |         let ksizes = keysizes_by_dist.entry(dist_norm).or_insert(Vec::new());
[INFO] [stderr]     |                                                        ^^^^^^^^^^^^^^^^^^^^^ help: try this: `or_insert_with(Vec::new)`
[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: You are using an explicit closure for cloning elements
[INFO] [stderr]    --> src/xor.rs:114:5
[INFO] [stderr]     |
[INFO] [stderr] 114 | /     keysizes_by_dist.iter()
[INFO] [stderr] 115 | |         .flat_map(|(_dist, ksizes)| ksizes)
[INFO] [stderr] 116 | |         .map(|&size| size)
[INFO] [stderr]     | |__________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::map_clone)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#map_clone
[INFO] [stderr] help: Consider calling the dedicated `cloned` method
[INFO] [stderr]     |
[INFO] [stderr] 114 |     keysizes_by_dist.iter()
[INFO] [stderr] 115 |         .flat_map(|(_dist, ksizes)| ksizes).cloned()
[INFO] [stderr]     |
[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/xor.rs:172:25
[INFO] [stderr]     |
[INFO] [stderr] 172 |         assert_eq!(key, 'X' as u8);
[INFO] [stderr]     |                         ^^^^^^^^^
[INFO] [stderr]     |
[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: casting character literal to u8. `char`s are 4 bytes wide in rust, so casting to u8 truncates them
[INFO] [stderr]    --> src/xor.rs:190:25
[INFO] [stderr]     |
[INFO] [stderr] 190 |         assert_eq!(key, '5' as u8);
[INFO] [stderr]     |                         ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: Consider using a byte literal instead:
[INFO] [stderr]             b'5'
[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: use of `unwrap_or` followed by a function call
[INFO] [stderr]   --> src/main.rs:34:37
[INFO] [stderr]    |
[INFO] [stderr] 34 |     let cmd = &matches.opt_str("c").unwrap_or("xorguess".to_string());
[INFO] [stderr]    |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|| "xorguess".to_string())`
[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: use of `unwrap_or` followed by a function call
[INFO] [stderr]   --> src/main.rs:34:37
[INFO] [stderr]    |
[INFO] [stderr] 34 |     let cmd = &matches.opt_str("c").unwrap_or("xorguess".to_string());
[INFO] [stderr]    |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|| "xorguess".to_string())`
[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]     Finished dev [unoptimized + debuginfo] target(s) in 3.21s
[INFO] running `"docker" "inspect" "338bcc4f8e01528ab2b46f42e9a6c4268851f1c1ebd4afccb3f4f80fc83a576a"`
[INFO] running `"docker" "rm" "-f" "338bcc4f8e01528ab2b46f42e9a6c4268851f1c1ebd4afccb3f4f80fc83a576a"`
[INFO] [stdout] 338bcc4f8e01528ab2b46f42e9a6c4268851f1c1ebd4afccb3f4f80fc83a576a