Buildfarm member drongo has been failing the initdb TAP test in the 9.4 branch for the last week or two:
# Running: rm -rf 'C:\prog\bf\root\REL9_4_STABLE\pgsql.build\src\bin\initdb\tmp_check\tmp_testAHN7'/* 'rm' is not recognized as an internal or external command, operable program or batch file. Bail out! system rm -rf 'C:\prog\bf\root\REL9_4_STABLE\pgsql.build\src\bin\initdb\tmp_check\tmp_testAHN7'/* failed: 256 The test has not changed; rather, it looks like drongo wasn't trying to run it before. This test is passing in the newer branches --- evidently due to the 9.5-era commit 1a629c1b1, which removed this TAP script's dependency on "rm -rf". So we should either back-patch that commit into 9.4 or undo whatever configuration change caused drongo to try to run more tests. I favor the former. regards, tom lane