[...]

tforms: x86_64-linux
Building for target x86_64-linux
Wrote: /home/users/builder/rpm/SRPMS/libadwaita-1.5.2-1.src.rpm
real 0.14
user 0.13
sys 0.01
Writing git revision for tag tld/libadwaita-1.5.2-1
error: Macro %_builddir has empty body
Begin-TLD-Builder-Info
Build-Time: user:1.10s sys:0.27s real:3.92s (faults io:2 non-io:148645)
Files queued for ftp:
   4468412 libadwaita-1.5.2-1.src.rpm
       188 libadwaita-1.5.2-1.src.rpm.uploadinfo
End-TLD-Builder-Info