These stop calls were put in place during a time when the "pump" threads were not easily interrupted. Usually this was due to being forced to work with opaque IO streams rather than the actual channels. At this point, with Thread#stop going away and still causing log noise, we have decided to remove all calls. This code was used primarily by the few remaining non-popen-based command launches (usually which read the streams to completion and do not need to be interrupted), and for much of IO on Windows (since we have not finished porting native IO logic to Windows). If the removal of these calls leads to leaky pump threads, we will find an alternative way or prioritize the completion of native IO on Windows.
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