[PATCH] [gdb/testsuite] Fix gdb.rust/completion.exp timeout on riscv64-linux

[Tom Tromey]

>>>>> "Tom" == Tom de Vries <tdevries@suse.de> writes:

Tom> So it seems reasonable that the test is somewhat slower on riscv64.

Tom> Fix this by using timeout factor 2.

Seems fine to me.
Approved-By: Tom Tromey <tom@tromey.com>

Tom