Th
​is has been going on for the last few months.  It only seems to happen for
sys-libs/e2fsprogs-libs.  I haven't filed a bug yet as I'm unsure if there
is something I'm overlooking on my end.  I can delete /root/.ccache and
remerge and it seems to be fine after that, but while updating the world a
few weeks later it sporadically returns.

The relevant part of the build:

make[1]: 'compile_et' is up to date.
> make[1]: Leaving directory
> '/var/tmp/portage/sys-libs/e2fsprogs-libs-1.44.1/work/e2fsprogs-libs-1.44.1-ab
> i_x86_64.amd64/lib/et'
> making all in lib/et
> * ACCESS DENIED:  utimes:       /root/.ccache
> * ACCESS DENIED:  mkdir:        /root/.ccache/3
> make[1]: Entering directory
> '/var/tmp/portage/sys-libs/e2fsprogs-libs-1.44.1/work/e2fsprogs-libs-1.44.1-a
> bi_x86_64.amd64/lib/et'
> make[1]: Nothing to be done for 'all'.
> make[1]: Leaving directory
> '/var/tmp/portage/sys-libs/e2fsprogs-libs-1.44.1/work/e2fsprogs-libs-1.44.1-ab
> i_x86_64.amd64/lib/et'


​And the sandbox report:​

* --------------------------- ACCESS VIOLATION SUMMARY
> ---------------------------
> * LOG FILE: "/var/log/sandbox/sandbox-28430.log"
> *
> VERSION 1.0
> FORMAT: F - Function called
> FORMAT: S - Access Status
> FORMAT: P - Path as passed to function
> FORMAT: A - Absolute Path (not canonical)
> FORMAT: R - Canonical Path
> FORMAT: C - Command Line
>
> F: utimes
> S: deny
> P: /root/.ccache
> A: /root/.ccache
> R: /root/.ccache
> C: x86_64-pc-linux-gnu-gcc -x c -v -c /dev/null -o /dev/null
> F: mkdir
> S: deny
> P: /root/.ccache/3
> A: /root/.ccache/3
> R: /root/.ccache/3
> C: x86_64-pc-linux-gnu-gcc -x c -v -c /dev/null -o /dev/null
> *
> --------------------------------------------------------------------------------


Has anyone else run into sporadic build failures like this?