openSUSE admin

On mx-test.i.o.o I successfully implemented mtail to gather additional Postfix metrics.
Somehow the same setup (applied through Salt) does not work on mx{1,2}.i.o.o:

Apr 14 16:12:56 mx1 systemd-coredump[4188]: [🡕] Process 4180 (mtail) of user 466 dumped core.

                                            Found module linux-vdso.so.1 with build-id: d74f0fa9e6060ef50f04c54743fb715c80644efa
                                            Found module ld-linux-x86-64.so.2 with build-id: 05822256d9a387231c1407bb78e3bb897dab7683
                                            Found module libc.so.6 with build-id: 1d516dbeef7c3ce248cba1adcbd9d5d0617b1a54
                                            Found module libpthread.so.0 with build-id: 9f18ae6e80129ab977c51f69ac92b7fd18fc0b24
                                            Found module mtail without build-id.
                                            Stack trace of thread 4180:
                                            #0  0x000055a43c49536e runtime/internal/syscall.Syscall6 (mtail + 0x436e)
                                            #1  0x000055a43c495353 syscall.RawSyscall6 (mtail + 0x4353)
                                            #2  0x000055a43c512efb syscall.RawSyscall (mtail + 0x81efb)
                                            #3  0x000055a43c511dcf syscall.setrlimit (mtail + 0x80dcf)
                                            #4  0x000055a43c50dfd4 syscall.init.0 (mtail + 0x7cfd4)
                                            #5  0x000055a43c4dc628 runtime.doInit (mtail + 0x4b628)
                                            #6  0x000055a43c4dc571 runtime.doInit (mtail + 0x4b571)
                                            #7  0x000055a43c4dc571 runtime.doInit (mtail + 0x4b571)
                                            #8  0x000055a43c4dc571 runtime.doInit (mtail + 0x4b571)
                                            #9  0x000055a43c4cf1f4 runtime.main (mtail + 0x3e1f4)
                                            #10 0x000055a43c500ae1 runtime.goexit.abi0 (mtail + 0x6fae1)

                                            Stack trace of thread 4182:
                                            #0  0x000055a43c5023dd runtime.usleep.abi0 (mtail + 0x713dd)
                                            #1  0x000055a43c4da4a5 runtime.sysmon (mtail + 0x494a5)
                                            #2  0x000055a43c4d1e95 runtime.mstart1 (mtail + 0x40e95)
                                            #3  0x000055a43c4d1dd9 runtime.mstart0 (mtail + 0x40dd9)
                                            #4  0x000055a43c4fe7a5 runtime.mstart.abi0 (mtail + 0x6d7a5)
                                            #5  0x000055a43c4929d4 runtime/cgo(.text) (mtail + 0x19d4)