warning: missing `package` declaration
 --> testdata/parser/syntax/eof_after_kw.proto
   = note: not explicitly specifying a package places the file in the unnamed
           package; using it strongly is discouraged

error: unexpected end-of-file in `syntax` declaration
  --> testdata/parser/syntax/eof_after_kw.proto:1:7
   |
 1 | syntax
   |       ^

encountered 1 error and 1 warning
