Hmm... I'm now using GCC 10.5 + MinGW-w64 6.0.1, and I used that toolchain to rebuild CB. Also, I set that compiler as the default compiler for building programs, but CB still crashed today... The RPT file contains the same content as above.
There's another thing that is worth mentioning. When I opened a project, CB suddenly gave me a debugging check failure, shown as the attached picture.