libtcl8.6.so do not have write permission for owner. That is required for striping debug info with new debugedit 5.1 version. Following error is visible in logs.
find-debuginfo: starting
Extracting debug info from 2 files
objcopy: unable to copy file '/builddir/build/BUILD/tcl-8.6.14-build/BUILDROOT/usr/lib64/libtcl8.6.so'; reason: Permission denied

Similar problem was detected by nfs-utils where mount.nfs also don't have write permission for owner. https://src.fedoraproject.org/rpms/nfs-utils/blob/rawhide/f/nfs-utils.2.8.2-rc1.patch 


Reproducible: Always

Steps to Reproduce:
1.fedpkg mockbuild --target f41
2.
3.
Actual Results:  
rpm build failed

Expected Results:  
rpm build is successful.

After adding following change, build is ok.
@@ -94,6 +94,8 @@ ln -s tclsh%{majorver} %{buildroot}%{_bindir}/tclsh
 
 # for linking with -lib%%{name}
 ln -s lib%{name}%{majorver}.so %{buildroot}%{_libdir}/lib%{name}.so
+# set write permission for allowing stripping debug symbols
+chmod +w %{buildroot}%{_libdir}/lib%{name}.so
 
 mkdir -p %{buildroot}/%{_libdir}/%{name}%{majorver}
 
@@ -125,7 +127,7 @@ ln -s %{_bindir}/tclsh %{_bindir}/tclsh%{majorver} %{buildroot}%{_usr}/bin/
 %{_datadir}/%{name}%{majorver}
 %exclude %{_datadir}/%{name}%{majorver}/tclAppInit.c
 %{_datadir}/%{name}8
-%{_libdir}/lib%{name}%{majorver}.so
+%attr(555, root, root) %{_libdir}/lib%{name}%{majorver}.so
 %{_mandir}/man1/*
 %if 0%{?flatpak}
 %{_usr}/bin/tclsh*