Build failure
As discussed in KDE chat I figured I'd place it here for you in the morning.
(gdb) bt
#0 KIdentityManagement::IdentityManager::begin() const (this=0xe97)
at /usr/src/debug/kf5-kidentitymanagement-20.12.2-1.fc34.x86_64/src/identitymanager.cpp:488
#1 0x000000000040a5d3 in main(int, char**) (argc=1, argv=0x7fffffffda38) at /tmp/quickmail/src/main.cpp:47
Carl Schwan: Iterator in api are evil