feat(toml): Warn on unset Edition

rust-lang · Feb 29, 2024 · 0f9d4a3 · 0f9d4a3
1 parent 0955a80
commit 0f9d4a3
Show file tree

Hide file tree

Showing 2 changed files with 6 additions and 0 deletions.
diff --git a/src/cargo/util/toml/mod.rs b/src/cargo/util/toml/mod.rs
@@ -570,6 +570,11 @@ pub fn to_real_manifest(
         package.edition = Some(manifest::InheritableField::Value(edition.to_string()));
         edition
     } else {
+        warnings.push(format!(
+            "no edition set: defaulting to the {} edition while the latest is {}",
+            Edition::Edition2015,
+            Edition::LATEST_STABLE
+        ));
         Edition::Edition2015
     };
     // Add these lines if start a new unstable edition.

diff --git a/tests/testsuite/edition.rs b/tests/testsuite/edition.rs
@@ -141,6 +141,7 @@ fn unset_edition_works_on_old_msrv() {
     p.cargo("check -v")
         .with_stderr(
             "\
+[WARNING] no edition set: defaulting to the 2015 edition while the latest is 2021
 [CHECKING] foo [..]
 [RUNNING] `rustc [..] --edition=2015 [..]`
 [FINISHED] [..]