error: regex syntax error: empty alternate
  --> $DIR/regex.rs:16:45
   |
16 |     let pipe_in_wrong_position = Regex::new("|");
   |                                             ^^^
   |
   = note: `-D invalid-regex` implied by `-D warnings`

error: regex syntax error: empty alternate
  --> $DIR/regex.rs:17:60
   |
17 |     let pipe_in_wrong_position_builder = RegexBuilder::new("|");
   |                                                            ^^^

error: regex syntax error: invalid character class range
  --> $DIR/regex.rs:18:40
   |
18 |     let wrong_char_ranice = Regex::new("[z-a]");
   |                                        ^^^^^^^

error: regex syntax error: invalid character class range
  --> $DIR/regex.rs:19:35
   |
19 |     let some_unicode = Regex::new("[é-è]");
   |                                   ^^^^^^^

error: regex syntax error on position 0: unclosed parenthesis
  --> $DIR/regex.rs:21:33
   |
21 |     let some_regex = Regex::new(OPENING_PAREN);
   |                                 ^^^^^^^^^^^^^

error: regex syntax error: empty alternate
  --> $DIR/regex.rs:23:53
   |
23 |     let binary_pipe_in_wrong_position = BRegex::new("|");
   |                                                     ^^^

error: regex syntax error on position 0: unclosed parenthesis
  --> $DIR/regex.rs:24:41
   |
24 |     let some_binary_regex = BRegex::new(OPENING_PAREN);
   |                                         ^^^^^^^^^^^^^

error: regex syntax error on position 0: unclosed parenthesis
  --> $DIR/regex.rs:25:56
   |
25 |     let some_binary_regex_builder = BRegexBuilder::new(OPENING_PAREN);
   |                                                        ^^^^^^^^^^^^^

error: regex syntax error on position 0: unclosed parenthesis
  --> $DIR/regex.rs:40:9
   |
40 |         OPENING_PAREN,
   |         ^^^^^^^^^^^^^

error: regex syntax error on position 0: unclosed parenthesis
  --> $DIR/regex.rs:44:9
   |
44 |         OPENING_PAREN,
   |         ^^^^^^^^^^^^^

error: trivial regex
  --> $DIR/regex.rs:50:33
   |
50 |     let trivial_eq = Regex::new("^foobar$");
   |                                 ^^^^^^^^^^
   |
   = note: `-D trivial-regex` implied by `-D warnings`
   = help: consider using consider using `==` on `str`s

error: trivial regex
  --> $DIR/regex.rs:52:48
   |
52 |     let trivial_eq_builder = RegexBuilder::new("^foobar$");
   |                                                ^^^^^^^^^^
   |
   = help: consider using consider using `==` on `str`s

error: trivial regex
  --> $DIR/regex.rs:54:42
   |
54 |     let trivial_starts_with = Regex::new("^foobar");
   |                                          ^^^^^^^^^
   |
   = help: consider using consider using `str::starts_with`

error: trivial regex
  --> $DIR/regex.rs:56:40
   |
56 |     let trivial_ends_with = Regex::new("foobar$");
   |                                        ^^^^^^^^^
   |
   = help: consider using consider using `str::ends_with`

error: trivial regex
  --> $DIR/regex.rs:58:39
   |
58 |     let trivial_contains = Regex::new("foobar");
   |                                       ^^^^^^^^
   |
   = help: consider using consider using `str::contains`

error: trivial regex
  --> $DIR/regex.rs:60:39
   |
60 |     let trivial_contains = Regex::new(NOT_A_REAL_REGEX);
   |                                       ^^^^^^^^^^^^^^^^
   |
   = help: consider using consider using `str::contains`

error: trivial regex
  --> $DIR/regex.rs:62:40
   |
62 |     let trivial_backslash = Regex::new("a//.b");
   |                                        ^^^^^^^
   |
   = help: consider using consider using `str::contains`

error: trivial regex
  --> $DIR/regex.rs:65:36
   |
65 |     let trivial_empty = Regex::new("");
   |                                    ^^
   |
   = help: consider using the regex is unlikely to be useful as it is

error: trivial regex
  --> $DIR/regex.rs:67:36
   |
67 |     let trivial_empty = Regex::new("^");
   |                                    ^^^
   |
   = help: consider using the regex is unlikely to be useful as it is

error: trivial regex
  --> $DIR/regex.rs:69:36
   |
69 |     let trivial_empty = Regex::new("^$");
   |                                    ^^^^
   |
   = help: consider using consider using `str::is_empty`

error: trivial regex
  --> $DIR/regex.rs:71:44
   |
71 |     let binary_trivial_empty = BRegex::new("^$");
   |                                            ^^^^
   |
   = help: consider using consider using `str::is_empty`

error: aborting due to 21 previous errors