Package: ftp.debian.org Severity: important Similar to #974877 in fact:
=== cut === packer_0.10.2+dfsg-6+deb9u1_amd64.deb: Built-Using refers to non-existing source package golang-fsnotify (= 1.4.2-1) === Please feel free to respond to this email if you don't understand why your files were rejected, or if you upload new files which address our concerns. === cut === How do we resolve this?