Auto merge of #39100 - Mark-Simulacrum:fix-stage1, r=eddyb
Auto merge of #39100 - Mark-Simulacrum:fix-stage1, r=eddyb

Fix stage 1 tests broken because i128 doesn't work in stage 1

Broken by https://github.com/rust-lang/rust/pull/38992.

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