vts-tradefed gives error when multiple ADB devices are connected

Question

Android vts-tradefed gives error when multiple ADB devices are connected:

07-01 11:23:20 E/ProcessHelper: Exception AttributeError: "'AndroidDevice' object has no attribute 'hal'" in 07-01 11:23:20 E/ProcessHelper: > ignored 07-01 11:23:20 E/ProcessHelper: Exception AttributeError: "'AndroidDevice' object has no attribute 'hal'" in > ignored

Ideas?

Answer 1

adb 1.0.41 solved the problem for me. Even adb 1.0.39 works for this usecase but 1.0.40 seems to have the issue.