Index: target-spec/Cargo.toml
===================================================================
--- target-spec.orig/Cargo.toml
+++ target-spec/Cargo.toml
@@ -62,7 +62,7 @@ name = "target_spec"
 path = "src/lib.rs"
 
 [dependencies.cfg-expr]
-version = "0.20.6"
+version = "0.18"
 features = ["targets"]
 
 [dependencies.guppy-workspace-hack]
