Failures on Fedora-x86_64-m64, branch gdb-8.0-branch

[sergiodj+buildbot@sergiodj.net]

Buildslave:
	fedora-x86-64-4

Full Build URL:
	<http://gdb-build.sergiodj.net/builders/Fedora-x86_64-m64/builds/6172>

Commit(s) tested:
	b6486c1f82fab968ee119b0fbcfadfdbd0dad745

Author(s) (in the same order as the commits):
	Tom Tromey <tom@tromey.com>

Subject:
	Fix rust_dump_subexp_body

Testsuite log (gdb.sum and gdb.log) URL(s):
	<http://gdb-build.sergiodj.net/results/Fedora-x86_64-m64/b6/b6486c1f82fab968ee119b0fbcfadfdbd0dad745/>

*** Diff to previous build ***
============================
PASS -> FAIL: gdb.threads/process-dies-while-detaching.exp: single-process: continue: watchpoint: continue
PASS -> FAIL: gdb.threads/process-dies-while-detaching.exp: single-process: continue: killed outside: continue
PASS -> FAIL: gdb.threads/signal-while-stepping-over-bp-other-thread.exp: step
PASS -> FAIL: gdb.threads/watchpoint-fork.exp: child: multithreaded: breakpoint
============================


*** Complete list of XFAILs for this builder ***

FAILURE TO OBTAIN THE COMMIT FOR THE XFAIL LIST.  PLEASE CONTACT THE BUILDBOT ADMIN.