%Warning-PINMISSING: t/t_lint_pindup_bad.v:18:4: Instance has missing pin: 'exists'
   18 |    sub (.o(o),
      |    ^~~
                     t/t_lint_pindup_bad.v:32:15: ... Location of port declaration
   32 |    input wire exists
      |               ^~~~~~
                     ... For warning description see https://verilator.org/warn/PINMISSING?v=latest
                     ... Use "/* verilator lint_off PINMISSING */" and lint_on around source to disable this message.
%Error: t/t_lint_pindup_bad.v:20:10: Duplicate pin connection: 'i'
   20 |         .i(i2),   
      |          ^
        t/t_lint_pindup_bad.v:19:10: ... Location of original pin connection
   19 |         .i(i),
      |          ^
        ... See the manual at https://verilator.org/verilator_doc.html?v=latest for more assistance.
%Error-PINNOTFOUND: t/t_lint_pindup_bad.v:21:10: Pin not found: 'nexist'
                                               : ... Suggested alternative: 'exists'
   21 |         .nexist(i2)   
      |          ^~~~~~
                    ... For error description see https://verilator.org/warn/PINNOTFOUND?v=latest
%Error-PINNOTFOUND: t/t_lint_pindup_bad.v:15:9: Parameter not found: 'NEXIST'
                                              : ... Suggested alternative: 'EXIST'
   15 |      #(.NEXIST(1),   
      |         ^~~~~~
%Error: t/t_lint_pindup_bad.v:17:9: Duplicate parameter connection: 'P'
   17 |        .P(3))   
      |         ^
        t/t_lint_pindup_bad.v:16:9: ... Location of original parameter connection
   16 |        .P(2),
      |         ^
%Error: Exiting due to