[rb] fix failing specs

Author: titusfortner

rb/lib/selenium/webdriver/common/selenium_manager.rb

@@ -76,7 +76,7 @@ def run(command)
           begin
             stdout, stderr, status = Open3.capture3(command)
           rescue StandardError => e
-            raise Error::WebDriverError, "Unsuccessful command executed: #{command}", e
+            raise Error::WebDriverError, "Unsuccessful command executed: #{command}", e.message
           end
 
           if status.exitstatus.positive?

rb/spec/integration/selenium/webdriver/driver_spec.rb

@@ -28,10 +28,10 @@ module WebDriver
         reset_driver! do |driver|
           caps = driver.capabilities
           expect(caps.proxy).to be_nil
-          expect(caps.browser_version).to match(/^\d\d\./)
+          expect(caps.browser_version).to match(/^\d\d\d?\./)
           expect(caps.platform_name).not_to be_nil
 
-          expect(caps.accept_insecure_certs).to be == false
+          expect(caps.accept_insecure_certs).to be == (caps.browser_name == 'firefox')
           expect(caps.page_load_strategy).to be == 'normal'
           expect(caps.implicit_timeout).to be_zero
           expect(caps.page_load_timeout).to be == 300000