[Qa-jenkins-scm] reproducible-env-changes.log found

[jenkins at jenkins.debian.net]

A few entries per day are normal, a few dozens or hundreds probably not.

Thu Jan 14 16:02:52 UTC 2016 - https://jenkins.debian.net/job/reproducible_builder_armhf_20/624/console encountered a problem: different packages were installed in the 1st+2nd builds and also in the 2nd+3rd build.
-rw-r--r-- 1 jenkins jenkins 16876 Jan 14 16:02 ./b1/ncl_6.3.0-6_armhf.buildinfo on ff2a-armhf-rb.debian.net
-rw-r--r-- 1 jenkins jenkins 16882 Jan 14 08:11 ./b2/ncl_6.3.0-6_armhf.buildinfo on odxu4b-armhf-rb.debian.net