Auto merge of #49771 - tamird:incremental-no-stage-1, r=Mark-Simulacrum
Auto merge of #49771 - tamird:incremental-no-stage-1, r=Mark-Simulacrum

Don't default to stage 1 with incremental

Closes #43177.

r? @Mark-Simulacrum

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