The program will panic when FileSpec.o_suffix is none.

[gamife]

version: 0.23
When the log file is empty, the file_stem does not contain .restart-. So the unwrap() is not ok.

flexi_logger/src/writers/file_log_writer/state.rs

Line 678 in 0fca68d

let index = file_stem.find(".restart-").unwrap(/*ok*/);