Due to luck of network access the libguestfs build with the pre-compiled appliance.
The package was built successfully, but during the installation test faced the issue (see the output):
+ /usr/bin/libguestfs-test-tool
     ************************************************************
     *                    IMPORTANT NOTICE
     *
     * When reporting bugs, include the COMPLETE, UNEDITED
     * output below in your bug report.
     *
     ************************************************************
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
SELinux: Enforcing
library version: 1.20.11rhel=6,release=2.mira4
guestfs_get_append: (null)
guestfs_get_attach_method: appliance
guestfs_get_autosync: 1
guestfs_get_cachedir: /var/tmp
guestfs_get_direct: 0
guestfs_get_memsize: 500
guestfs_get_network: 0
guestfs_get_path: /usr/lib64/guestfs
guestfs_get_pgroup: 0
guestfs_get_qemu: /usr/bin/qemu-kvm
guestfs_get_recovery_proc: 1
guestfs_get_selinux: 0
guestfs_get_smp: 1
guestfs_get_tmpdir: /tmp
guestfs_get_trace: 0
guestfs_get_verbose: 1
host_cpu: x86_64
Launching appliance, timeout set to 600 seconds.
libguestfs: launch: attach-method=appliance
libguestfs: launch: tmpdir=/tmp/libguestfs0adqtv
libguestfs: launch: umask=0022
libguestfs: launch: euid=0
libguestfs: command: run: febootstrap-supermin-helper
libguestfs: command: run: \ --verbose
libguestfs: command: run: \ -f checksum
libguestfs: command: run: \ /usr/lib64/guestfs/supermin.d
libguestfs: command: run: \ x86_64
supermin helper [00000ms] whitelist = (not specified), host_cpu = x86_64, kernel = (null), initrd = (null), appliance = (null)
supermin helper [00002ms] inputs[0] = /usr/lib64/guestfs/supermin.d
checking modpath /lib/modules/2.6.32-358.2.1.el6.x86_64 is a directory
picked vmlinuz-2.6.32-358.2.1.el6.x86_64 because modpath /lib/modules/2.6.32-358.2.1.el6.x86_64 exists
supermin helper [00004ms] finished creating kernel
supermin helper [00004ms] visiting /usr/lib64/guestfs/supermin.d
supermin helper [00004ms] visiting /usr/lib64/guestfs/supermin.d/daemon.img
supermin helper [00004ms] visiting /usr/lib64/guestfs/supermin.d/init.img
supermin helper [00004ms] visiting /usr/lib64/guestfs/supermin.d/udev-rules.img
supermin helper [00004ms] adding kernel modules
supermin helper [00234ms] finished creating appliance
libguestfs: checksum of existing appliance: 0e1c5945c4770888dc09aa2a8ec16676e74ea1bd1516ba0462dc3e0c79695937
libguestfs: [00241ms] begin building supermin appliance
libguestfs: [00241ms] run supermin-helper
libguestfs: command: run: febootstrap-supermin-helper
libguestfs: command: run: \ --verbose
libguestfs: command: run: \ --copy-kernel
libguestfs: command: run: \ -f ext2
libguestfs: command: run: \ /usr/lib64/guestfs/supermin.d
libguestfs: command: run: \ x86_64
libguestfs: command: run: \ /var/tmp/guestfs.W7RIue/kernel
libguestfs: command: run: \ /var/tmp/guestfs.W7RIue/initrd
libguestfs: command: run: \ /var/tmp/guestfs.W7RIue/root
supermin helper [00000ms] whitelist = (not specified), host_cpu = x86_64, kernel = /var/tmp/guestfs.W7RIue/kernel, initrd = /var/tmp/guestfs.W7RIue/initrd, appliance = /var/tmp/guestfs.W7RIue/root
supermin helper [00000ms] inputs[0] = /usr/lib64/guestfs/supermin.d
checking modpath /lib/modules/2.6.32-358.2.1.el6.x86_64 is a directory
picked vmlinuz-2.6.32-358.2.1.el6.x86_64 because modpath /lib/modules/2.6.32-358.2.1.el6.x86_64 exists
supermin helper [00030ms] finished creating kernel
supermin helper [00324ms] finished mke2fs
supermin helper [00325ms] visiting /usr/lib64/guestfs/supermin.d
supermin helper [00325ms] visiting /usr/lib64/guestfs/supermin.d/daemon.img
supermin helper [00332ms] visiting /usr/lib64/guestfs/supermin.d/init.img
supermin helper [00332ms] visiting /usr/lib64/guestfs/supermin.d/udev-rules.img
febootstrap-supermin-helper: ext2: parent directory not found: /lib: File not found by ext2_lookup