[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.

Sun Oct 23 12:25:48 UTC 2016 - https://jenkins.debian.net/job/reproducible_builder_armhf_60/249/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 10328 Oct 22 08:08 ./b1/qtwebkit_2.3.4.dfsg-9_armhf.buildinfo on cbxi4b-armhf-rb.debian.net
-rw-r--r-- 1 jenkins jenkins 10328 Oct 22 18:25 ./b2/qtwebkit_2.3.4.dfsg-9_armhf.buildinfo on opi2a-armhf-rb.debian.net