Seems that the nightly build is just a tiny bit too large to fit into 1 gig USB key.
Though liveusb-creator reports
[creator:544] Verifying filesystem...
[creator:245] freebytes = 994951168
[creator:246] isosize = 980418560
[creator:248] overlaysize = 0
df -k during the install:
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/sdb1 971632 217184 754448 23% /media/FEDORA
/dev/loop0 957102 957102 0 100% /tmp/tmpLLEWnm
Both of the above indicate that there is enough space in the USB key.
Ie. Freebytes > isosize and /dev/sdb1 > /dev/loop
cp: writing `/media/FEDORA/EFI/boot/vmlinuz0': No space left on device
Second try running liveusb creator comes up with:
Not enough free space on device.
935MB ISO + 0MB overlay > 934MB free space
Any workarounds for that?