Today I'm starting to see winmm_test spew an infinite series of failures on line 467 of mixer.c:
../../../tools/runtest -q -P wine -M winmm.dll -T ../../.. -p winmm_test.exe.so mixer.c && touch mixer.ok ALSA lib seq_hw.c:456:(snd_seq_hw_open) open /dev/snd/seq failed: No such file or directory mixer.c:359: Test failed: mixerGetDevCapsA: MMSYSERR_NOERROR expected, got MMSYSERR_BADDEVICEID mixer.c:364: Test failed: mixerGetDevCapsA: MMSYSERR_NOERROR expected, got MMSYSERR_BADDEVICEID mixer.c:408: Test failed: mixerGetLineInfoA(MIXER_GETLINEINFOF_DESTINATION): MMSYSERR_INVALPARAM or MIXERR_INVALLINE expected, got MMSYSERR_BADDEVICEID mixer.c:433: Test failed: mixerGetLineInfoA(MIXER_GETLINEINFOF_DESTINATION): MMSYSERR_NOERROR expected, got MMSYSERR_BADDEVICEID mixer.c:467: Test failed: mixerGetLineInfoA(MIXER_GETLINEINFOF_SOURCE): MMSYSERR_NOERROR expected, got MMSYSERR_BADDEVICEID mixer.c:467: Test failed: mixerGetLineInfoA(MIXER_GETLINEINFOF_SOURCE): MMSYSERR_NOERROR expected, got MMSYSERR_BADDEVICEID mixer.c:467: Test failed: mixerGetLineInfoA(MIXER_GETLINEINFOF_SOURCE): MMSYSERR_NOERROR expected, got MMSYSERR_BADDEVICEID mixer.c:467: Test failed: mixerGetLineInfoA(MIXER_GETLINEINFOF_SOURCE): MMSYSERR_NOERROR expected, got MMSYSERR_BADDEVICEID ...
I have to do wineserver -k to make progress.