rustc-1.30.0-src/src/tools/lldb/unittests/SymbolFile/DWARF/Inputs/test-dwarf.exe
It is installed for some unit test with Rust for some purpose ?
Relates to (Mac):
Homebrew/downloads/1d49ea42373b3bc3a966ce08027f958cb636942ca4e1d2273dd608b9c29a0485--rustc-1.30.0-src.tar.gz
It's part of LLDB's test suite and likely a false positive
I'll inform Avira that https://github.com/llvm-mirror/lldb/blob/master/unittests/SymbolFile/DWARF/SymbolFileDWARFTests.cpp (or the exe from it) is innocent.

Most helpful comment
It's part of LLDB's test suite and likely a false positive