patch 7.4.2364
Problem:    Sort test sometimes fails.
Solution:   Add it to the list of flaky tests.
diff --git a/src/testdir/runtest.vim b/src/testdir/runtest.vim
index 19f1c5f..05a1053 100644
--- a/src/testdir/runtest.vim
+++ b/src/testdir/runtest.vim
@@ -144,7 +144,12 @@
 endif
 
 " Names of flaky tests.
-let s:flaky = ['Test_reltime()', 'Test_nb_basic()', 'Test_communicate()']
+let s:flaky = [
+      \ 'Test_reltime()',
+      \ 'Test_nb_basic()',
+      \ 'Test_communicate()'
+      \ 'Test_pipe_through_sort_some()'
+      \ ]
 
 " Locate Test_ functions and execute them.
 set nomore