Each JSON log record contains the logging level of the log statement as a string.
Different handlers provide that string in uppercase or lowercase.
Documentation for slog.Level
says that its String() and MarshalJSON() methods will return uppercase
but UnmarshalJSON() will parse in a case-insensitive manner.
Chanchal Zap
'info'
Phsym Zerolog
'info'
Samber Logrus
'info'
Samber Zap
'info'
Samber Zerolog
'info'
Administrative
Unused
Unused Warnings(s)
If a warning is specified but the condition is not actually present
one of these warnings will be issued with the specified warning.
These are intended to help clean out unnecessary WarnOnly settings
from a test suite as issues are fixed in the tested handler.