Issue #20895 has been updated by vo.x (Vit Ondruch). Actually, it seems that I was a bit unlucky and `ruby 3.4.0dev (2024-11-14 master 54ff9d3525) +PRISM [x86_64-linux]` works just fine. ---------------------------------------- Bug #20895: Network related test failures https://bugs.ruby-lang.org/issues/20895#change-110660 * Author: vo.x (Vit Ondruch) * Status: Open * ruby -v: ruby 3.4.0dev (2024-11-14 master 54ff9d3525) +PRISM [x86_64-linux] * Backport: 3.1: UNKNOWN, 3.2: UNKNOWN, 3.3: UNKNOWN ---------------------------------------- Testing recent Ruby in Fedora Rawhide, I have started to observe following errors: ~~~ 183) Failure: TestSocket_TCPSocket#test_initialize_resolv_timeout_with_connection_failure [/builddir/build/BUILD/ruby-3.4.0_20241114git54ff9d3525-build/ruby-3.4.0-54ff9d3525/test/socket/test_tcp.rb:284]: [Errno::ETIMEDOUT] exception expected, not #<Errno::ECONNREFUSED: Connection refused - connect(2) for "localhost" port 41615>. 184) Failure: TestSocket_TCPSocket#test_initialize_with_hostname_resolution_failure_after_connection_failure [/builddir/build/BUILD/ruby-3.4.0_20241114git54ff9d3525-build/ruby-3.4.0-54ff9d3525/test/socket/test_tcp.rb:303]: [Socket::ResolutionError] exception expected, not #<Errno::ECONNREFUSED: Connection refused - connect(2) for "localhost" port 43017>. 185) Failure: TestNetHTTP_v1_2#test_timeout_during_HTTP_session [/builddir/build/BUILD/ruby-3.4.0_20241114git54ff9d3525-build/ruby-3.4.0-54ff9d3525/test/net/http/test_http.rb:625]: [Net::ReadTimeout] exception expected, not #<Errno::ECONNREFUSED: Failed to open TCP connection to localhost:43017 (Connection refused - connect(2) for "localhost" port 43017)>. 186) Error: TestSocket_TCPSocket#test_initialize_v6_hostname_resolution_failed_and_v4_hostname_resolution_is_success: Socket::ResolutionError: getaddrinfo(3): Non-recoverable failure in name resolution /builddir/build/BUILD/ruby-3.4.0_20241114git54ff9d3525-build/ruby-3.4.0-54ff9d3525/test/socket/test_tcp.rb:266:in 'TCPSocket#initialize' /builddir/build/BUILD/ruby-3.4.0_20241114git54ff9d3525-build/ruby-3.4.0-54ff9d3525/test/socket/test_tcp.rb:266:in 'IO.new' /builddir/build/BUILD/ruby-3.4.0_20241114git54ff9d3525-build/ruby-3.4.0-54ff9d3525/test/socket/test_tcp.rb:266:in '<main>' /builddir/build/BUILD/ruby-3.4.0_20241114git54ff9d3525-build/ruby-3.4.0-54ff9d3525/test/socket/test_tcp.rb:259:in 'TestSocket_TCPSocket#test_initialize_v6_hostname_resolution_failed_and_v4_hostname_resolution_is_success' 187) Error: TestSocket_TCPSocket#test_initialize_v6_hostname_resolved_earlier_and_v6_server_is_not_listening: Errno::ECONNREFUSED: Connection refused - connect(2) for "localhost" port 39421 /builddir/build/BUILD/ruby-3.4.0_20241114git54ff9d3525-build/ruby-3.4.0-54ff9d3525/test/socket/test_tcp.rb:222:in 'TCPSocket#initialize' /builddir/build/BUILD/ruby-3.4.0_20241114git54ff9d3525-build/ruby-3.4.0-54ff9d3525/test/socket/test_tcp.rb:222:in 'IO.new' /builddir/build/BUILD/ruby-3.4.0_20241114git54ff9d3525-build/ruby-3.4.0-54ff9d3525/test/socket/test_tcp.rb:222:in '<main>' /builddir/build/BUILD/ruby-3.4.0_20241114git54ff9d3525-build/ruby-3.4.0-54ff9d3525/test/socket/test_tcp.rb:213:in 'TestSocket_TCPSocket#test_initialize_v6_hostname_resolved_earlier_and_v6_server_is_not_listening' ~~~ Please note that the build system does not have internet access. At least some of the test failures are likely related to #20782 / https://github.com/ruby/ruby/pull/11653 -- https://bugs.ruby-lang.org/