[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 Oct 19 15:00:40 UTC 2015 - https://jenkins.debian.net/job/reproducible_builder_amd64_20/1605/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 22118 Oct 19 15:00 ./b1/witty_3.3.4+dfsg-5_amd64.buildinfo on profitbricks-build2-amd64.debian.net
-rw-r--r-- 1 jenkins jenkins 22080 Oct 19 14:33 ./b2/witty_3.3.4+dfsg-5_amd64.buildinfo on profitbricks-build5-amd64.debian.net