Since version 4.032 (04/2020) verilator linter messages also contain the
column number, and look like:
%Error: /tmp/test.sv:3:1: syntax error, unexpected endmodule, expecting ';'
To stay compatible with old versions of the tool, the column number is
optional in the researched pattern regular expression.
See commit:
https://github.com/verilator/verilator/commit/81c659957e89f28861fde870f000cce2d5f76729
TG