Description of problem:

The latest rawhide updates on my system brought the following fonts:

bitstream-vera-sans-fonts
bitstream-vera-sans-mono-fonts
bitstream-vera-serif-fonts
dejavu-lgc-sans-fonts
dejavu-lgc-sans-mono-fonts
dejavu-lgc-serif-fonts
dejavu-sans-fonts
dejavu-sans-mono-fonts
dejavu-serif-fonts

With every of those packages I got a message like this:

/usr/share/fonts/dejavu: failed to write cache

It turns out that messages are coming from /usr/bin/fc-cache and running '/usr/bin/fc-cache -v /usr/share/fonts/dejavu' produces the following:

/usr/share/fonts/dejavu: caching, new cache contents: 42 fonts, 0 dirs
/usr/share/fonts/dejavu: failed to write cache
/var/cache/fontconfig: cleaning cache directory
/root/.fontconfig: not cleaning non-existent cache directory
/usr/bin/fc-cache: failed

Check with strace reveals what follows:

open("/var/cache/fontconfig/12b26b760a24f8b4feb03ad48a333a72-x86-64.cache-2", O_
RDONLY) = -1 ENOENT (No such file or directory)
open("/root/.fontconfig/12b26b760a24f8b4feb03ad48a333a72-x86-64.cache-2", O_RDON
LY) = -1 ENOENT (No such file or directory)
write(2, "/usr/share/fonts/dejavu: failed t"..., 47) = 47
unlink("/var/cache/fontconfig/12b26b760a24f8b4feb03ad48a333a72-x86-64.cache-2") 
= -1 ENOENT (No such file or directory)
unlink("/root/.fontconfig/12b26b760a24f8b4feb03ad48a333a72-x86-64.cache-2") = -1
 ENOENT (No such file or directory)

Attempts to open new files with O_RDONLY?  I do not think that this is going to work.

Version-Release number of selected component (if applicable):
fontconfig-2.6.90-3.git.63.g6bb4b9a.fc11.x86_64

How reproducible:
On every try.