make check fails

I have a report from BSD/OS developers that 'make check' fails during
the initdb stage. Any ideas?

/bin/sh ./pg_regress --temp-install --top-builddir=../../.. --schedule=./parallel_schedule --multibyte=
============== removing existing temp installation ==============
============== creating temporary installation ==============
============== initializing database system ==============
============== starting postmaster ==============
running on port 65432 with pid 14870
============== creating database "regression" ==============
psql: connectDBStart() -- connect() failed: No such file or directory
Is the postmaster running locally
and accepting connections on Unix socket '/tmp/.s.PGSQL.65432'?
createdb: database creation failed
pg_regress: createdb failed
kill: 14870: No such process
gmake[2]: Leaving directory `/usr/var/local/src/gen/pgsql/CURRENT/pgsql/src/test/regress'
gmake[1]: Leaving directory `/usr/var/local/src/gen/pgsql/CURRENT/pgsql/src/test'

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