Replace some println! with tidy_error! to simplify

src/tools/tidy/src/deps.rs

@@ -214,12 +214,12 @@ fn check_exceptions(metadata: &Metadata, bad: &mut bool) {
     for (name, license) in EXCEPTIONS {
         // Check that the package actually exists.
         if !metadata.packages.iter().any(|p| p.name == *name) {
-            println!(
+            tidy_error!(
+                bad,
                 "could not find exception package `{}`\n\
                 Remove from EXCEPTIONS list if it is no longer used.",
                 name
             );
-            *bad = true;
         }
         // Check that the license hasn't changed.
         for pkg in metadata.packages.iter().filter(|p| p.name == *name) {
@@ -232,11 +232,11 @@ fn check_exceptions(metadata: &Metadata, bad: &mut bool) {
             }
             match &pkg.license {
                 None => {
-                    println!(
+                    tidy_error!(
+                        bad,
                         "dependency exception `{}` does not declare a license expression",
                         pkg.id
                     );
-                    *bad = true;
                 }
                 Some(pkg_license) => {
                     if pkg_license.as_str() != *license {
@@ -273,8 +273,7 @@ fn check_exceptions(metadata: &Metadata, bad: &mut bool) {
         let license = match &pkg.license {
             Some(license) => license,
             None => {
-                println!("dependency `{}` does not define a license expression", pkg.id,);
-                *bad = true;
+                tidy_error!(bad, "dependency `{}` does not define a license expression", pkg.id);
                 continue;
             }
         };
@@ -286,8 +285,7 @@ fn check_exceptions(metadata: &Metadata, bad: &mut bool) {
                 // general, these should never be added.
                 continue;
             }
-            println!("invalid license `{}` in `{}`", license, pkg.id);
-            *bad = true;
+            tidy_error!(bad, "invalid license `{}` in `{}`", license, pkg.id);
         }
     }
 }
@@ -300,12 +298,12 @@ fn check_dependencies(metadata: &Metadata, bad: &mut bool) {
     // Check that the PERMITTED_DEPENDENCIES does not have unused entries.
     for name in PERMITTED_DEPENDENCIES {
         if !metadata.packages.iter().any(|p| p.name == *name) {
-            println!(
+            tidy_error!(
+                bad,
                 "could not find allowed package `{}`\n\
                 Remove from PERMITTED_DEPENDENCIES list if it is no longer used.",
                 name
             );
-            *bad = true;
         }
     }
     // Get the list in a convenient form.
@@ -322,11 +320,10 @@ fn check_dependencies(metadata: &Metadata, bad: &mut bool) {
     }
 
     if !unapproved.is_empty() {
-        println!("Dependencies not explicitly permitted:");
+        tidy_error!(bad, "Dependencies not explicitly permitted:");
         for dep in unapproved {
             println!("* {}", dep);
         }
-        *bad = true;
     }
 }
 
@@ -381,16 +378,17 @@ fn check_crate_duplicate(metadata: &Metadata, bad: &mut bool) {
         let matches: Vec<_> = metadata.packages.iter().filter(|pkg| pkg.name == name).collect();
         match matches.len() {
             0 => {
-                println!(
+                tidy_error!(
+                    bad,
                     "crate `{}` is missing, update `check_crate_duplicate` \
                     if it is no longer used",
                     name
                 );
-                *bad = true;
             }
             1 => {}
             _ => {
-                println!(
+                tidy_error!(
+                    bad,
                     "crate `{}` is duplicated in `Cargo.lock`, \
                     it is too expensive to build multiple times, \
                     so make sure only one version appears across all dependencies",
@@ -399,7 +397,6 @@ fn check_crate_duplicate(metadata: &Metadata, bad: &mut bool) {
                 for pkg in matches {
                     println!("  * {}", pkg.id);
                 }
-                *bad = true;
             }
         }
     }

src/tools/tidy/src/extdeps.rs

@@ -27,8 +27,7 @@ pub fn check(root: &Path, bad: &mut bool) {
 
         // Ensure source is allowed.
         if !ALLOWED_SOURCES.contains(&&*source) {
-            println!("invalid source: {}", source);
-            *bad = true;
+            tidy_error!(bad, "invalid source: {}", source);
         }
     }
 }

src/tools/tidy/src/features.rs

@@ -330,7 +330,6 @@ fn collect_lang_features_in(base: &Path, file: &str, bad: &mut bool) -> Features
             let issue_str = parts.next().unwrap().trim();
             let tracking_issue = if issue_str.starts_with("None") {
                 if level == Status::Unstable && !next_feature_omits_tracking_issue {
-                    *bad = true;
                     tidy_error!(
                         bad,
                         "{}:{}: no tracking issue for feature {}",

src/tools/tidy/src/lib.rs

@@ -28,6 +28,10 @@ macro_rules! t {
 }
 
 macro_rules! tidy_error {
+    ($bad:expr, $fmt:expr) => ({
+        *$bad = true;
+        eprintln!("tidy error: {}", $fmt);
+    });
     ($bad:expr, $fmt:expr, $($arg:tt)*) => ({
         *$bad = true;
         eprint!("tidy error: ");

src/tools/tidy/src/ui_tests.rs

@@ -67,14 +67,12 @@ pub fn check(path: &Path, bad: &mut bool) {
                     let testname =
                         file_path.file_name().unwrap().to_str().unwrap().split_once('.').unwrap().0;
                     if !file_path.with_file_name(testname).with_extension("rs").exists() {
-                        println!("Stray file with UI testing output: {:?}", file_path);
-                        *bad = true;
+                        tidy_error!(bad, "Stray file with UI testing output: {:?}", file_path);
                     }
 
                     if let Ok(metadata) = fs::metadata(file_path) {
                         if metadata.len() == 0 {
-                            println!("Empty file with UI testing output: {:?}", file_path);
-                            *bad = true;
+                            tidy_error!(bad, "Empty file with UI testing output: {:?}", file_path);
                         }
                     }
                 }