Hi!  Since some time, 'guix reconfigure' on my machine fails:

building /gnu/store/chilbs792mqssmi726zmvff5zg49gija-provenance.drv...
building /gnu/store/9skvgwsl0vxccv5sbgvqimkhk3938v8y-rsnapshot-1.4.4.drv...
\ 'check' phasebuilder for `/gnu/store/9skvgwsl0vxccv5sbgvqimkhk3938v8y-rsnapshot-1.4.4.drv' failed with exit code 1
build of /gnu/store/9skvgwsl0vxccv5sbgvqimkhk3938v8y-rsnapshot-1.4.4.drv failed
View build log at '/var/log/guix/drvs/9s/kvgwsl0vxccv5sbgvqimkhk3938v8y-rsnapshot-1.4.4.drv.bz2'.
cannot build derivation `/gnu/store/a9kw0xkbx6wy0w893b4kzzrxh3a5lnx6-profile.drv': 1 dependencies couldn't be built
building /gnu/store/89hsi8xglfybbvrjrqf0zhkg546ahjyd-shepherd-console-font-tty1.scm.drv...
cannot build derivation `/gnu/store/mx5zqmx388ixzr55rzak59wfygpyn6fm-system.drv': 1 dependencies couldn't be built
guix system: error: build of `/gnu/store/mx5zqmx388ixzr55rzak59wfygpyn6fm-system.drv' failed
root@hamster ~# bzcat /var/log/guix/drvs/9s/kvgwsl0vxccv5sbgvqimkhk3938v8y-rsnapshot-1.4.4.drv.bz2|tail 
  Failed test:  1
  Non-zero exit status: 1
t/cmd-post_pre-exec/cmd-post_pre-exec.t                                    (Wstat: 256 Tests: 4 Failed: 1)
  Failed test:  4
  Non-zero exit status: 1
Files=12, Tests=38,  3 wallclock secs ( 0.04 usr  0.01 sys +  1.51 cusr  0.23 csys =  1.79 CPU)
Result: FAIL
Failed 2/12 test programs. 2/38 subtests failed.
make: *** [Makefile:938: test] Error 255
command "make" "test" failed with status 2
root@hamster ~# 

How can I fix this?  Is this something unique on my machine, or does it
indicate a bug in the packaging of 'rsnapshot'?  I'm not sure how to
proceed with debugging.

How come others haven't noticed this, aren't all packages built
centrally to make sure things build?

Thanks,
/Simon