The lldb tests only run on macos on CI. I think it might be worthwhile to run them on one CI builder for Linux, just to give a little more coverage. However, it's not really clear if anyone is actually using rust-lldb.

I discovered this because the debuginfo tests always fail on my local development system because I have lldb installed. This was a little frustrating, so I investigated and discovered that the pretty-std-collections.rs was not being tested on CI because it is ignored on macos, and it was broken a while ago.

It might be as easy as just adding apt install lldb to a builder. I don't think it is important to try to build it from source. Note that due to some oddity with how lldb apt package is installed, there is a missing symlink. Something like ln -s /usr/lib/llvm-10/bin/lldb-server /usr/bin/lldb-server-10.0.0 may be needed to get it to work.