[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.

Fri Oct 21 15:14:35 UTC 2016 - https://jenkins.debian.net/job/reproducible_builder_amd64_16/51837/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 58087 Oct 21 15:13 ./b1/gcc-6_6.2.0-9_amd64.buildinfo on profitbricks-build5-amd64.debian.net
-rw-r--r-- 1 jenkins jenkins 58087 Oct 21 07:24 ./b2/gcc-6_6.2.0-9_amd64.buildinfo on profitbricks-build1-amd64.debian.net