[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.

Mon Dec 14 00:12:09 UTC 2015 - https://jenkins.debian.net/job/reproducible_builder_amd64_29/12118/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 4356 Dec 14 00:12 ./b1/pidgin-lastfm_0.4a-2_amd64.buildinfo on profitbricks-build6-amd64.debian.net
-rw-r--r-- 1 jenkins jenkins 4356 Dec 14 00:11 ./b2/pidgin-lastfm_0.4a-2_amd64.buildinfo on profitbricks-build2-amd64.debian.net