Simple test panic.

[tubzby]

Seems this simple test failed for me:

    #[tokio::test]
    #[traced_test]
    async fn test_log() -> anyhow::Result<()> {
        info!("hello");
        Ok(())
    }

It will panic with output:

running 1 test
thread 'connector::rotate::tests::test_log' panicked at 'called `Result::unwrap()` on an `Err` value: Syntax(
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
regex parse error:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 1: (?x)
 2:             ^(?P<global_level>(?i:trace|debug|info|warn|error|off|[0-5]))$ |
                                      ^
 3:                 #                 ^^^.
 4:                 #                     `note: we match log level names case-insensitively
 5:             ^
 6:             (?: # target name or span name
 7:                 (?P<target>[\w:-]+)|(?P<span>\[[^\]]*\])
 8:             ){1,2}
 9:             (?: # level or nothing
10:                 =(?P<level>(?i:trace|debug|info|warn|error|off|[0-5]))?
11:                     #          ^^^.
12:                     #              `note: we match log level names case-insensitively
13:             )?
14:             $
15:             
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
error: Unicode-aware case insensitivity matching is not available (make sure the unicode-case feature is enabled)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~