Log excerpt: Warning: Permanently added '2620:52:3:1:dead:beef:cafe:c191' (ED25519) to the list of known hosts.
Running (timeout=18000): unbuffer mock --spec /var/lib/copr-rpmbuild/workspace/workdir-mmgu1jug/perl-FileHandle-Fmode/perl-FileHandle-Fmode.spec --sources /var/lib/copr-rpmbuild/workspace/workdir-mmgu1jug/perl-FileHandle-Fmode --resultdir /var/lib/copr-rpmbuild/results --uniqueext 1706200861.636798 -r /var/lib/copr-rpmbuild/results/configs/child.cfg --with toolchain_clang --with clang_lto
INFO: mock.py version 5.4 starting (python version = 3.11.3, NVR = mock-5.4-1.fc38), args: /usr/libexec/mock/mock --spec /var/lib/copr-rpmbuild/workspace/workdir-mmgu1jug/perl-FileHandle-Fmode/perl-FileHandle-Fmode.spec --sources /var/lib/copr-rpmbuild/workspace/workdir-mmgu1jug/perl-FileHandle-Fmode --resultdir /var/lib/copr-rpmbuild/results --uniqueext 1706200861.636798 -r /var/lib/copr-rpmbuild/results/configs/child.cfg --with toolchain_clang --with clang_lto
Start(bootstrap): init plugins
INFO: tmpfs initialized
INFO: selinux enabled
INFO: chroot_scan: initialized
INFO: compress_logs: initialized
Finish(bootstrap): init plugins
Start: init plugins
INFO: tmpfs initialized
INFO: selinux enabled
INFO: chroot_scan: initialized
INFO: compress_logs: initialized
Finish: init plugins
INFO: Signal handler active
Start: run
INFO: Start(/var/lib/copr-rpmbuild/workspace/workdir-mmgu1jug/perl-FileHandle-Fmode/perl-FileHandle-Fmode.spec)  Config(fedora-eln-x86_64)
Start: clean chroot
Finish: clean chroot
Mock Version: 5.4
INFO: Mock Version: 5.4
Start(bootstrap): chroot init
INFO: mounting tmpfs at /var/lib/mock/fedora-eln-x86_64-bootstrap-1706200861.636798/root.
INFO: calling preinit hooks
INFO: enabled root cache
INFO: enabled package manager cache
Start(bootstrap): cleaning package manager metadata
Finish(bootstrap): cleaning package manager metadata
INFO: Guessed host environment type: unknown
INFO: Using bootstrap image: quay.io/fedoraci/fedora:eln
INFO: Pulling image: quay.io/fedoraci/fedora:eln
INFO: Copy content of container quay.io/fedoraci/fedor
Comment: This is one of the three attempts Mock does to install the BuildRequires specified in spec file. All of the three attempts failed to install `clang-rpm-macros` which runtime-depends on `clang = 13.0.0`.  But no package providing this exists.