error: single-character string constant used as pattern
  --> $DIR/single_char_pattern.rs:9:13
   |
LL |     x.split("x");
   |             ^^^ help: try using a `char` instead: `'x'`
   |
   = note: `-D clippy::single-char-pattern` implied by `-D warnings`

error: single-character string constant used as pattern
  --> $DIR/single_char_pattern.rs:15:13
   |
LL |     x.split("ß");
   |             ^^^ help: try using a `char` instead: `'ß'`

error: single-character string constant used as pattern
  --> $DIR/single_char_pattern.rs:16:13
   |
LL |     x.split("ℝ");
   |             ^^^ help: try using a `char` instead: `'ℝ'`

error: single-character string constant used as pattern
  --> $DIR/single_char_pattern.rs:17:13
   |
LL |     x.split("💣");
   |             ^^^^ help: try using a `char` instead: `'💣'`

error: single-character string constant used as pattern
  --> $DIR/single_char_pattern.rs:20:16
   |
LL |     x.contains("x");
   |                ^^^ help: try using a `char` instead: `'x'`

error: single-character string constant used as pattern
  --> $DIR/single_char_pattern.rs:21:19
   |
LL |     x.starts_with("x");
   |                   ^^^ help: try using a `char` instead: `'x'`

error: single-character string constant used as pattern
  --> $DIR/single_char_pattern.rs:22:17
   |
LL |     x.ends_with("x");
   |                 ^^^ help: try using a `char` instead: `'x'`

error: single-character string constant used as pattern
  --> $DIR/single_char_pattern.rs:23:12
   |
LL |     x.find("x");
   |            ^^^ help: try using a `char` instead: `'x'`

error: single-character string constant used as pattern
  --> $DIR/single_char_pattern.rs:24:13
   |
LL |     x.rfind("x");
   |             ^^^ help: try using a `char` instead: `'x'`

error: single-character string constant used as pattern
  --> $DIR/single_char_pattern.rs:25:14
   |
LL |     x.rsplit("x");
   |              ^^^ help: try using a `char` instead: `'x'`

error: single-character string constant used as pattern
  --> $DIR/single_char_pattern.rs:26:24
   |
LL |     x.split_terminator("x");
   |                        ^^^ help: try using a `char` instead: `'x'`

error: single-character string constant used as pattern
  --> $DIR/single_char_pattern.rs:27:25
   |
LL |     x.rsplit_terminator("x");
   |                         ^^^ help: try using a `char` instead: `'x'`

error: single-character string constant used as pattern
  --> $DIR/single_char_pattern.rs:28:17
   |
LL |     x.splitn(0, "x");
   |                 ^^^ help: try using a `char` instead: `'x'`

error: single-character string constant used as pattern
  --> $DIR/single_char_pattern.rs:29:18
   |
LL |     x.rsplitn(0, "x");
   |                  ^^^ help: try using a `char` instead: `'x'`

error: single-character string constant used as pattern
  --> $DIR/single_char_pattern.rs:30:15
   |
LL |     x.matches("x");
   |               ^^^ help: try using a `char` instead: `'x'`

error: single-character string constant used as pattern
  --> $DIR/single_char_pattern.rs:31:16
   |
LL |     x.rmatches("x");
   |                ^^^ help: try using a `char` instead: `'x'`

error: single-character string constant used as pattern
  --> $DIR/single_char_pattern.rs:32:21
   |
LL |     x.match_indices("x");
   |                     ^^^ help: try using a `char` instead: `'x'`

error: single-character string constant used as pattern
  --> $DIR/single_char_pattern.rs:33:22
   |
LL |     x.rmatch_indices("x");
   |                      ^^^ help: try using a `char` instead: `'x'`

error: single-character string constant used as pattern
  --> $DIR/single_char_pattern.rs:34:26
   |
LL |     x.trim_start_matches("x");
   |                          ^^^ help: try using a `char` instead: `'x'`

error: single-character string constant used as pattern
  --> $DIR/single_char_pattern.rs:35:24
   |
LL |     x.trim_end_matches("x");
   |                        ^^^ help: try using a `char` instead: `'x'`

error: single-character string constant used as pattern
  --> $DIR/single_char_pattern.rs:37:13
   |
LL |     x.split("/n");
   |             ^^^^ help: try using a `char` instead: `'/n'`

error: single-character string constant used as pattern
  --> $DIR/single_char_pattern.rs:38:13
   |
LL |     x.split("'");
   |             ^^^ help: try using a `char` instead: `'/''`

error: single-character string constant used as pattern
  --> $DIR/single_char_pattern.rs:39:13
   |
LL |     x.split("/'");
   |             ^^^^ help: try using a `char` instead: `'/''`

error: single-character string constant used as pattern
  --> $DIR/single_char_pattern.rs:44:31
   |
LL |     x.replace(";", ",").split(","); // issue #2978
   |                               ^^^ help: try using a `char` instead: `','`

error: single-character string constant used as pattern
  --> $DIR/single_char_pattern.rs:45:19
   |
LL |     x.starts_with("/x03"); // issue #2996
   |                   ^^^^^^ help: try using a `char` instead: `'/x03'`

error: single-character string constant used as pattern
  --> $DIR/single_char_pattern.rs:52:13
   |
LL |     x.split(r"a");
   |             ^^^^ help: try using a `char` instead: `'a'`

error: single-character string constant used as pattern
  --> $DIR/single_char_pattern.rs:53:13
   |
LL |     x.split(r#"a"#);
   |             ^^^^^^ help: try using a `char` instead: `'a'`

error: single-character string constant used as pattern
  --> $DIR/single_char_pattern.rs:54:13
   |
LL |     x.split(r###"a"###);
   |             ^^^^^^^^^^ help: try using a `char` instead: `'a'`

error: single-character string constant used as pattern
  --> $DIR/single_char_pattern.rs:55:13
   |
LL |     x.split(r###"'"###);
   |             ^^^^^^^^^^ help: try using a `char` instead: `'/''`

error: single-character string constant used as pattern
  --> $DIR/single_char_pattern.rs:56:13
   |
LL |     x.split(r###"#"###);
   |             ^^^^^^^^^^ help: try using a `char` instead: `'#'`

error: aborting due to 30 previous errors