retitle 40316 nss not reproducible
thanks

Still an issue on master as of d29e5a83e887cd2f4f459a12cbbfc40c77e55ce2:

guix challenge --verbose --diff=simple nss
guix challenge: warning: could not determine current substitute URLs; using defaults
/gnu/store/mc9gdsm0cqpyd2522f5xghdl59p1l35r-nss-3.88.1 contents differ:
  no local build for '/gnu/store/mc9gdsm0cqpyd2522f5xghdl59p1l35r-nss-3.88.1'
  https://ci.guix.gnu.org/nar/lzip/mc9gdsm0cqpyd2522f5xghdl59p1l35r-nss-3.88.1: 18xvq9cb7y2hajixnkk24bh969px0h5289hgby484iyg3x73sagp
  https://bordeaux.guix.gnu.org/nar/lzip/mc9gdsm0cqpyd2522f5xghdl59p1l35r-nss-3.88.1: 0pnmzsy7m34v51qxpi4lrj2a9m7l19prldabwad8gx24gih4irah
  differing files:
    /lib/nss/libfreebl3.chk
    /lib/nss/libfreeblpriv3.chk
    /lib/nss/libnssdbm3.chk
    /lib/nss/libsoftokn3.chk

1 store items were analyzed:
  - 0 (0.0%) were identical
  - 1 (100.0%) differed
  - 0 (0.0%) were inconclusive

According to the notes in Debian, this is due to cryptographic
signatures performed at build time:

  https://tests.reproducible-builds.org/debian/rb-pkg/unstable/amd64/diffoscope-results/nss.html


live well,
  vagrant