I found several vm_trace! macros under vm/src directory while debugging codes, but I don't have an idea how to use them.

I guess those are for debugging, but they didn't print anything on the console, or write file log, when I added vm-tracing-logging to the features of vm/Cargo.toml.

And there were some compile errors which had to fix it to compile, looks like it would be good to fix this.