50     return RecordID.takeError();  in parseRecord()
97     return RecordID.takeError();  in parseRecord()
163     return Next.takeError();  in parseBlock()
179       return Next.takeError();  in parseBlock()
218       return R.takeError();  in parseMagic()
225     return Next.takeError();  in parseBlockInfoBlock()
236     return MaybeBlockInfo.takeError();  in parseBlockInfoBlock()
254     return Next.takeError();  in isBlock()
292     return MagicNumber.takeError();  in advanceToMetaBlock()
300     return isMetaBlock.takeError();  in advanceToMetaBlock()
315     return MagicNumber.takeError();  in createBitstreamParserFromMeta()
530     return RemarkName.takeError();  in processRemark()
540     return PassName.takeError();  in processRemark()
549     return FunctionName.takeError();  in processRemark()
554       return SourceFileName.takeError();  in processRemark()
584       return Key.takeError();  in processRemark()
589       return Value.takeError();  in processRemark()
599         return SourceFileName.takeError();  in processRemark()