Took on a "destroy installations" mission and destroyed - well - everything. Installations, ships, the whole lot. Didn't get a "mission successful" message.
Went into cruise and got told I was fleeing the scene. Mission failure, no payment, just a big damage bill.
happened again last night (27/6/17) in Omicron Delta. Again, weapons platforms. Since i'm playing Nomad indie with no tractor, this limits me to "kill ships" missions only.