log CPU starvation message as single line

[mr-git]

Currently on Cats Effect 3.4.8, the CPU starvation message gets logged like:

2023-04-17T10:18:37.277Z [WARNING] Your app's responsiveness to a new asynchronous 
event (such as a new connection, an upstream response, or a timer) was in excess
of 5 milliseconds. Your CPU is probably starving. Consider increasing the 
granularity of your delays or adding more cedes. This may also be a sign that you
are unintentionally running blocking I/O operations (such as File or InetAddress)
without the blocking combinator.

As it gets written as multi-line entry, it breaks logging.

Please consider to print it as single line.

Probably something like following would work:

  private[this] def mkWarning(threshold: Duration)(when: FiniteDuration) =
    s"""|${format(when)} [WARNING] Your app's responsiveness to a new asynchronous
        | event (such as a new connection, an upstream response, or a timer) was in excess
        | of $threshold. Your CPU is probably starving. Consider increasing the
        | granularity of your delays or adding more cedes. This may also be a sign that you
        | are unintentionally running blocking I/O operations (such as File or InetAddress)
        | without the blocking combinator.""".stripMargin.replaceAll("\n", "")

[armanbilge]

Note that #3496 will enable you to fully customize the logging to your liking, do you think that would be sufficient?

[djspiewak]

I think that will suffice in part, but also it's good to do it on a single line by default since stderr is very commonly redirected to log aggregators.

[mr-git]

redirected to log aggregators.

I created a ticket due to this reason :)