Quang Ngô

I think this behaviour is good for swap file on SSD as we don't use the same location over and over again which can cause wearing.

One more data point: it crashed on Raspi 3 (armv7), but not on Raspi 0 (armv6).

Using "tag" and "content" at the same time on the enum have the same issue: ``` #[derive(Deserialize, Serialize)] struct A { #[serde(flatten)] b: B, } #[derive(Deserialize, Serialize)] #[serde(tag = "a",...