unneeded-field-pattern: make lint adhere to lint message convention

Author: matthiaskrgr

clippy_lints/src/misc_early.rs

@@ -298,9 +298,9 @@ impl EarlyLintPass for MiscEarlyLints {
                     cx,
                     UNNEEDED_FIELD_PATTERN,
                     pat.span,
-                    "All the struct fields are matched to a wildcard pattern, consider using `..`.",
+                    "all the struct fields are matched to a wildcard pattern, consider using `..`",
                     None,
-                    &format!("Try with `{} {{ .. }}` instead", type_name),
+                    &format!("try with `{} {{ .. }}` instead", type_name),
                 );
                 return;
             }
@@ -313,7 +313,7 @@ impl EarlyLintPass for MiscEarlyLints {
                                 cx,
                                 UNNEEDED_FIELD_PATTERN,
                                 field.span,
-                                "You matched a field with a wildcard pattern. Consider using `..` instead",
+                                "you matched a field with a wildcard pattern, consider using `..` instead",
                             );
                         } else {
                             let mut normal = vec![];
@@ -333,10 +333,10 @@ impl EarlyLintPass for MiscEarlyLints {
                                 cx,
                                 UNNEEDED_FIELD_PATTERN,
                                 field.span,
-                                "You matched a field with a wildcard pattern. Consider using `..` \
+                                "you matched a field with a wildcard pattern, consider using `..` \
                                  instead",
                                 None,
-                                &format!("Try with `{} {{ {}, .. }}`", type_name, normal[..].join(", ")),
+                                &format!("try with `{} {{ {}, .. }}`", type_name, normal[..].join(", ")),
                             );
                         }
                     }

tests/ui/unneeded_field_pattern.stderr

@@ -1,19 +1,19 @@
-error: You matched a field with a wildcard pattern. Consider using `..` instead
+error: you matched a field with a wildcard pattern, consider using `..` instead
   --> $DIR/unneeded_field_pattern.rs:14:15
    |
 LL |         Foo { a: _, b: 0, .. } => {},
    |               ^^^^
    |
    = note: `-D clippy::unneeded-field-pattern` implied by `-D warnings`
-   = help: Try with `Foo { b: 0, .. }`
+   = help: try with `Foo { b: 0, .. }`
 
-error: All the struct fields are matched to a wildcard pattern, consider using `..`.
+error: all the struct fields are matched to a wildcard pattern, consider using `..`
   --> $DIR/unneeded_field_pattern.rs:16:9
    |
 LL |         Foo { a: _, b: _, c: _ } => {},
    |         ^^^^^^^^^^^^^^^^^^^^^^^^
    |
-   = help: Try with `Foo { .. }` instead
+   = help: try with `Foo { .. }` instead
 
 error: aborting due to 2 previous errors