Commit
e2f65f425 added contrib/pg_prewarm to the prerequisites for
running the src/test/recovery suite, but did not bother to update
the documentation about that.
NOTE: You must have given the --enable-tap-tests argument to configure.
Also, to use "make installcheck", you must have built and installed
-contrib/test_decoding in addition to the core code.
+contrib/pg_prewarm and contrib/test_decoding in addition to the core code.
Run
make check