+>STDERR>write to stderr: 1
+<STDERR<write to stdout
+>STDERR>error!: Cannot allocate memory
+<STDERR<>STDERR>write to stderr 2<STDERR<write to stdout 2>STDERR>
+<STDERR<
+>STDERR>more on stderr
+<STDERR<>STDERR>stderr ...
+<STDERR<more on stdout
+>STDERR>x<STDERR<