Was attempting to figure out why something wasn't being grabbed from the
sstate-cache, but running "bitbake -S printdiff qt4-embedded" only yields tons
of lines like this:

WARNING: /home/mike/.../bitbake/lib/bb/runqueue.py:1347: ResourceWarning:
unclosed file <_io.BufferedReader
name='/home/mike/.../build/tmp-glibc/stamps/cortexa9hf-neon-oe-linux-gnueabi/tiff/4.0.6-r0.do_populate_sysroot.sigdata.868460a5d532ef809db9bfa7ce2a89e4'>
  out2 = bb.siggen.compare_sigfiles(hashfiles[hash1], hashfiles[hash2],
recursecb)

Left it running for about fifteen minutes, but nothing useful came out.