https://bugzilla.redhat.com/show_bug.cgi?id=2117954
--- Comment #5 from Fabio Valentini decathorpe@gmail.com --- Yes, these warnings are harmless, and can be ignored. The built packages will contain the correct files, and the correct files will be marked as %doc and %license, respectively. This change was implemented in rust2rpm to make RPM packages for Rust crates smaller by not including these files twice.