Update to ruby/mspec@9bce874

spec/mspec/lib/mspec/runner/context.rb

@@ -28,6 +28,7 @@ class ContextState
     @pre      = {}
     @post     = {}
     @examples = []
+    @state    = nil
     @parent   = nil
     @parents  = [self]
     @children = []
@@ -127,6 +128,7 @@ class ContextState
   # Creates an ExampleState instance for the block and stores it
   # in a list of examples to evaluate unless the example is filtered.
   def it(desc, &block)
+    raise "nested #it" if @state
     example = ExampleState.new(self, desc, block)
     MSpec.actions :add, example
     return if MSpec.guarded?

spec/mspec/lib/mspec/utils/warnings.rb

@@ -16,6 +16,10 @@ if RUBY_ENGINE == "ruby" and ruby_version_is("2.4")
   end
 
   def Warning.warn(message)
+    # Suppress any warning inside the method to prevent recursion
+    verbose = $VERBOSE
+    $VERBOSE = nil
+
     if Thread.current[:in_mspec_complain_matcher]
       return $stderr.write(message)
     end
@@ -52,9 +56,12 @@ if RUBY_ENGINE == "ruby" and ruby_version_is("2.4")
     when /env\/shared\/key\.rb:\d+: warning: ENV\.index is deprecated; use ENV\.key/
     when /exponent(_spec)?\.rb:\d+: warning: in a\*\*b, b may be too big/
     when /enumerator\/(new_spec|initialize_spec)\.rb:\d+: warning: Enumerator\.new without a block is deprecated/
+    when /Pattern matching is experimental, and the behavior may change in future versions of Ruby!/
     else
       $stderr.write message
     end
+  ensure
+    $VERBOSE = verbose
   end
 else
   $VERBOSE = nil unless ENV['OUTPUT_WARNINGS']

spec/mspec/tool/sync/sync-rubyspec.rb

@@ -157,7 +157,8 @@ end
 def test_new_specs
   require "yaml"
   Dir.chdir(SOURCE_REPO) do
-    versions = YAML.load_file("#{MSPEC_REPO}/.travis.yml").fetch("rvm")
+    workflow = YAML.load_file(".github/workflows/ci.yml")
+    versions = workflow.dig("jobs", "test", "strategy", "matrix", "ruby")
     versions = versions.grep(/^\d+\./) # Test on MRI
     min_version, max_version = versions.minmax