Don't fail db restore for warnings

lib/backup/database.rb

@@ -9,6 +9,8 @@ module Backup
     attr_reader :config, :db_file_name
 
     IGNORED_ERRORS = [
+      # Ignore warnings
+      /WARNING:/,
       # Ignore the DROP errors; recent database dumps will use --if-exists with pg_dump
       /does not exist$/,
       # User may not have permissions to drop extensions or schemas

spec/lib/backup/database_spec.rb

@@ -38,7 +38,7 @@ RSpec.describe Backup::Database do
 
     context 'when the restore command prints errors' do
       let(:visible_error) { "This is a test error\n" }
-      let(:noise) { "Table projects does not exist\nmust be owner of extension pg_trgm\n" }
+      let(:noise) { "Table projects does not exist\nmust be owner of extension pg_trgm\nWARNING:  no privileges could be revoked for public\n" }
       let(:cmd) { %W[#{Gem.ruby} -e $stderr.write("#{noise}#{visible_error}")] }
 
       it 'filters out noise from errors' do