$ ./zig test ../lib/std/math/big/rational.zig --test-filter "setFloatString"  -target i386-native
Test [1/1] test "big.rational setFloatString"...error: TargetTooSmall
/home/andy/Downloads/zig/lib/std/heap/general_purpose_allocator.zig:561:13: 0x40481e in std.heap.general_purpose_allocator.GeneralPurposeAllocator((struct std.heap.general_purpose_allocator.Config constant)).resize (test)
            return error.OutOfMemory;
            ^
/home/andy/Downloads/zig/lib/std/heap/general_purpose_allocator.zig:561:13: 0x40481e in std.heap.general_purpose_allocator.GeneralPurposeAllocator((struct std.heap.general_purpose_allocator.Config constant)).resize (test)
            return error.OutOfMemory;
            ^
/home/andy/Downloads/zig/lib/std/heap/general_purpose_allocator.zig:561:13: 0x40481e in std.heap.general_purpose_allocator.GeneralPurposeAllocator((struct std.heap.general_purpose_allocator.Config constant)).resize (test)
            return error.OutOfMemory;
            ^
/home/andy/Downloads/zig/lib/std/heap/general_purpose_allocator.zig:561:13: 0x40481e in std.heap.general_purpose_allocator.GeneralPurposeAllocator((struct std.heap.general_purpose_allocator.Config constant)).resize (test)
            return error.OutOfMemory;
            ^
/home/andy/Downloads/zig/lib/std/heap/general_purpose_allocator.zig:561:13: 0x40481e in std.heap.general_purpose_allocator.GeneralPurposeAllocator((struct std.heap.general_purpose_allocator.Config constant)).resize (test)
            return error.OutOfMemory;
            ^
/home/andy/Downloads/zig/lib/std/heap/general_purpose_allocator.zig:561:13: 0x40481e in std.heap.general_purpose_allocator.GeneralPurposeAllocator((struct std.heap.general_purpose_allocator.Config constant)).resize (test)
            return error.OutOfMemory;
            ^
/home/andy/Downloads/zig/lib/std/math/big/int.zig:1025:21: 0x40e8eb in std.math.big.int.Const.to (test)
                    return error.TargetTooSmall;
                    ^
/home/andy/Downloads/zig/lib/std/math/big/int.zig:1518:9: 0x405b44 in std.math.big.int.Managed.to (test)
        return self.toConst().to(T);
        ^
/home/andy/Downloads/zig/lib/std/math/big/rational.zig:574:21: 0x404dbb in test "big.rational setFloatString" (test)
    testing.expect((try a.p.to(u128)) == 7214159312071241458852455252781510353);
                    ^
/home/andy/Downloads/zig/lib/std/special/test_runner.zig:75:17: 0x43e7d2 in std.special.main (test)
                return err;
                ^