Use CPU with all required features when kvm=no is specified

1 job for master in 3 minutes and 55 seconds (queued for 1 second)
Status Job ID Name Coverage
  Test
failed #29775
img

00:03:55

 
Name Stage Failure
failed
img Test
mv "target/x86_64-unknown-redox"/openlibm.partial "target/x86_64-unknown-redox"/openlibm
touch "target/x86_64-unknown-redox"/openlibm
make[2]: Leaving directory '/builds/redox-os/redox/relibc'
mk/prefix.mk:19: recipe for target 'prefix/x86_64-unknown-redox/relibc-install' failed
make[1]: Leaving directory '/builds/redox-os/redox'
make[1]: *** [prefix/x86_64-unknown-redox/relibc-install] Error 2
make: *** [ci-img] Error 2
Makefile:69: recipe for target 'ci-img' failed
ERROR: Job failed: exit code 1