Close files in fetch_delayed
Close files in fetch_delayed

Close #12192

Also removed transforming arbitrary exceptions into Faulty to make it
easier to reason about exception flow

JasonGross/coq,Zimmi48/coq,JasonGross/coq,gares/coq,coq/coq,SkySkimmer/coq,ejgallego/coq,coq/coq,SkySkimmer/coq,coq/coq,JasonGross/coq,gares/coq,gares/coq,SkySkimmer/coq,silene/coq,Zimmi48/coq,SkySkimmer/coq,gares/coq,Zimmi48/coq,gares/coq,ejgallego/coq,ejgallego/coq,coq/coq,Zimmi48/coq,ejgallego/coq,silene/coq,silene/coq,JasonGross/coq