Auto merge of rust-lang#116487 - tamird:avoid-unwrap-absolute, r=bjorn3

compiler: env/path handling fixes Please see individual commits. r? `@bjorn3` cf. rust-lang#116426
bjorn3 · Oct 8, 2023 · fea943d · fea943d
2 parents c9f6ac4 + 2753052
commit fea943d
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/build_system/main.rs b/build_system/main.rs
@@ -55,7 +55,7 @@ enum CodegenBackend {
 }
 
 fn main() {
-    if env::var("RUST_BACKTRACE").is_err() {
+    if env::var_os("RUST_BACKTRACE").is_none() {
         env::set_var("RUST_BACKTRACE", "1");
     }
     env::set_var("CG_CLIF_DISABLE_INCR_CACHE", "1");