I'm getting this weird issue when building core-image-full-cmdline with 4.3.1 and these local.conf settings:

MACHINE = "qemux86-64"
EXTRA_IMAGE_FEATURES += "package-management"
DISTRO = "poky-altcfg"
PACKAGE_CLASSES = "package_ipk"
PACKAGE_FEED_URIS = "http://192.168.1.20:8000"
PRSERV_HOST = "localhost:0"
INHERIT += "buildhistory"
BUILDHISTORY_COMMIT = "1"

   ERROR: libsolv-0.7.25-r0 do_packagedata_setscene: QA Issue: Package version for package libsolv-src went backwards which would break package feeds (from 0:0.7.25-r0.1 to 0:0.7.25-r0.0) [version-going-backwards]
   ERROR: libsolv-0.7.25-r0 do_packagedata_setscene: QA Issue: Package version for package libsolv-dbg went backwards which would break package feeds (from 0:0.7.25-r0.1 to 0:0.7.25-r0.0) [version-going-backwards]
   ERROR: libsolv-0.7.25-r0 do_packagedata_setscene: QA Issue: Package version for package libsolv-tools went backwards which would break package feeds (from 0:0.7.25-r0.1 to 0:0.7.25-r0.0) [version-going-backwards]
   ERROR: libsolv-0.7.25-r0 do_packagedata_setscene: QA Issue: Package version for package libsolvext went backwards which would break package feeds (from 0:0.7.25-r0.1 to 0:0.7.25-r0.0) [version-going-backwards]
   ERROR: libsolv-0.7.25-r0 do_packagedata_setscene: QA Issue: Package version for package libsolv-staticdev went backwards which would break package feeds (from 0:0.7.25-r0.1 to 0:0.7.25-r0.0) [version-going-backwards]
   ERROR: libsolv-0.7.25-r0 do_packagedata_setscene: QA Issue: Package version for package libsolv-dev went backwards which would break package feeds (from 0:0.7.25-r0.1 to 0:0.7.25-r0.0) [version-going-backwards]
   ERROR: libsolv-0.7.25-r0 do_packagedata_setscene: QA Issue: Package version for package libsolv-doc went backwards which would break package feeds (from 0:0.7.25-r0.1 to 0:0.7.25-r0.0) [version-going-backwards]
   ERROR: libsolv-0.7.25-r0 do_packagedata_setscene: QA Issue: Package version for package libsolv-locale went backwards which would break package feeds (from 0:0.7.25-r0.1 to 0:0.7.25-r0.0) [version-going-backwards]
   ERROR: libsolv-0.7.25-r0 do_packagedata_setscene: QA Issue: Package version for package libsolv went backwards which would break package feeds (from 0:0.7.25-r0.1 to 0:0.7.25-r0.0) [version-going-backwards]
   ERROR: libsolv-0.7.25-r0 do_packagedata_setscene: Fatal QA errors were found, failing task.
   WARNING: Logfile for failed setscene task is /home/tux/yocto/poky/build/tmp/work/core2-64-poky-linux/libsolv/0.7.25/temp/log.do_packagedata_setscene.3612846
   WARNING: Setscene task (/home/tux/yocto/poky/meta/recipes-extended/libsolv/libsolv_0.7.25.bb:do_packagedata_setscene) failed with exit code '1' - real task will be run instead
   NOTE: Tasks Summary: Attempted 5499 tasks of which 5488 didn't need to be rerun and all succeeded.

Before running this, I initially built my image with ipk packages, then deb and rpm, and went back to ipk.

Something seems to have broken the revision for libsolv.
This is confirmed by dumping the PR database with "bitbake-prserv-tool export prserv.conf". Only libsolv is impacted:

PRAUTO$libsolv-0.7.25-r0$core2-64$2c45079321f257024cfd58e7ded541edc82ba287932774f2bc3c31b61499d3b0 = "2"
PRAUTO_libsolv-0.7.25-r0_core2-64 = "2"

All other packages have a "0" revision.

I wonder what happened to this package. Checking the recipe sources, I see that SRC_URI is based on a fixed git commit, so I don't see what could have made its revision bump.

Not critical for me as it doesn't prevent me from generating an image.
However, keeping track of this issue in case someone else faces a similar one.