[Qemu-devel] travis builds: failing because of duff data in ccache cache?

[Qemu-devel] travis builds: failing because of duff data in ccache cache?

[Peter Maydell]

Hi; since commit 4b887ae travis builds have been persistently
failing on one particular config with the error:
exec.o: could not read symbols: File truncated
trying to link the mipsn32-linux-user binary.

My theory is that the problem here is that:
 * for one build, the build host ran out of disk space or otherwise
   hiccupped, resulting in a truncated .o file
 * since travis saves the ccache cache across builds, the truncated .o
   file has persisted and now every build is going to fail the same
   way (until something gets committed that results in exec.c or one
   of its included headers changing)

It looks like there's a way to manually clear the cache, so that
seems like a good first step to see if it fixes things:
https://docs.travis-ci.com/user/caching/#Clearing-Caches

Could somebody with admin access to our travis config try this, please?

thanks
-- PMM

Re: [Qemu-devel] travis builds: failing because of duff data in ccache cache?

[Alex Bennée]

Peter Maydell <peter.maydell@linaro.org> writes:

> Hi; since commit 4b887ae travis builds have been persistently
> failing on one particular config with the error:
> exec.o: could not read symbols: File truncated
> trying to link the mipsn32-linux-user binary.
>
> My theory is that the problem here is that:
>  * for one build, the build host ran out of disk space or otherwise
>    hiccupped, resulting in a truncated .o file
>  * since travis saves the ccache cache across builds, the truncated .o
>    file has persisted and now every build is going to fail the same
>    way (until something gets committed that results in exec.c or one
>    of its included headers changing)
>
> It looks like there's a way to manually clear the cache, so that
> seems like a good first step to see if it fixes things:
> https://docs.travis-ci.com/user/caching/#Clearing-Caches
>
> Could somebody with admin access to our travis config try this,
> please?

I've reset the cache for the master branch and restarted the build.

FWIW anyone who is a member of the QEMU project on Github should have
the permissions to tweak the Travis caches for the project.

>
> thanks
> -- PMM


--
Alex Bennée

Re: [Qemu-devel] travis builds: failing because of duff data in ccache cache?

[Peter Maydell]

On 22 August 2016 at 10:33, Alex Bennée <alex.bennee@linaro.org> wrote:
> FWIW anyone who is a member of the QEMU project on Github should have
> the permissions to tweak the Travis caches for the project.

I thought about trying that, but Travis wanted a whole pile
of Github permissions I wasn't willing to give it just to
log in and do admin actions, so I didn't.

thanks
-- PMM