regionck.rs: experimentally adopt a more conservative strategy for projection outlives relations that prefers not to add extract edges to region graph
regionck.rs: experimentally adopt a more conservative strategy for
projection outlives relations that prefers not to add extract edges to
region graph

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