outlives: convert outlives to use an exhaustive match, for better reliability.
outlives: convert outlives to use an exhaustive match, for better
reliability.

dwillmer/rust,aidancully/rust,GBGamer/rust,GBGamer/rust,GBGamer/rust,GBGamer/rust,aidancully/rust,graydon/rust,dwillmer/rust,dwillmer/rust,GBGamer/rust,graydon/rust,dwillmer/rust,aidancully/rust,aidancully/rust,dwillmer/rust,graydon/rust,dwillmer/rust,GBGamer/rust,GBGamer/rust,GBGamer/rust,aidancully/rust,graydon/rust,graydon/rust,aidancully/rust,dwillmer/rust,graydon/rust,dwillmer/rust