Auto merge of #74841 - infinity0:fix-exec, r=Mark-Simulacrum
Auto merge of #74841 - infinity0:fix-exec, r=Mark-Simulacrum

rustbuild: use Display for exit status instead of Debug, see #74832 for justification

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