rubocop.yml: disable some buggy cops.

Library/.rubocop.yml

@@ -54,6 +54,12 @@ FormulaAudit:
 FormulaAuditStrict:
   Enabled: true
 
+# TODO: try to re-enable in RuboCop >=1.9.1
+Lint/SymbolConversion:
+  Enabled: false
+Style/EvalWithLocation:
+  Enabled: false
+
 # makes DSL usage ugly.
 Layout/SpaceBeforeBrackets:
   Exclude:
@@ -204,7 +210,8 @@ Rails/TimeZone:
 
 # Don't allow cops to be disabled in casks and formulae.
 Style/DisableCopsWithinSourceCodeDirective:
-  Enabled: true
+  # TODO: try to re-enable in RuboCop >=1.9.1
+  Enabled: false
   Include:
     - "Taps/*/*/*.rb"
     - "/**/{Formula,Casks}/*.rb"