Print crate count for check::Rustc in snapshot tests

Author: Kobzol

src/bootstrap/src/core/build_steps/check.rs

@@ -232,7 +232,13 @@ impl Step for Rustc {
     }
 
     fn metadata(&self) -> Option<StepMetadata> {
-        Some(StepMetadata::check("rustc", self.target).built_by(self.build_compiler))
+        let metadata = StepMetadata::check("rustc", self.target).built_by(self.build_compiler);
+        let metadata = if self.crates.is_empty() {
+            metadata
+        } else {
+            metadata.with_metadata(format!("({} crates)", self.crates.len()))
+        };
+        Some(metadata)
     }
 }
 

src/bootstrap/src/core/builder/tests.rs

@@ -1515,7 +1515,7 @@ mod snapshot {
             ctx.config("check")
                 .path("compiler")
                 .render_steps(), @r"
-        [check] rustc 0 <host> -> rustc 1 <host>
+        [check] rustc 0 <host> -> rustc 1 <host> (73 crates)
         [check] rustc 0 <host> -> rustc 1 <host>
         [check] rustc 0 <host> -> rustc_codegen_cranelift 1 <host>
         [check] rustc 0 <host> -> rustc_codegen_gcc 1 <host>
@@ -1528,9 +1528,7 @@ mod snapshot {
         insta::assert_snapshot!(
             ctx.config("check")
                 .path("rustc")
-                .render_steps(), @r"
-        [check] rustc 0 <host> -> rustc 1 <host>
-        ");
+                .render_steps(), @"[check] rustc 0 <host> -> rustc 1 <host> (1 crates)");
     }
 
     #[test]
@@ -1548,7 +1546,7 @@ mod snapshot {
                 .path("compiler")
                 .stage(1)
                 .render_steps(), @r"
-        [check] rustc 0 <host> -> rustc 1 <host>
+        [check] rustc 0 <host> -> rustc 1 <host> (73 crates)
         [check] rustc 0 <host> -> rustc 1 <host>
         [check] rustc 0 <host> -> rustc_codegen_cranelift 1 <host>
         [check] rustc 0 <host> -> rustc_codegen_gcc 1 <host>
@@ -1566,7 +1564,7 @@ mod snapshot {
         [build] llvm <host>
         [build] rustc 0 <host> -> rustc 1 <host>
         [build] rustc 1 <host> -> std 1 <host>
-        [check] rustc 1 <host> -> rustc 2 <host>
+        [check] rustc 1 <host> -> rustc 2 <host> (73 crates)
         [check] rustc 1 <host> -> rustc 2 <host>
         [check] rustc 1 <host> -> rustc_codegen_cranelift 2 <host>
         [check] rustc 1 <host> -> rustc_codegen_gcc 2 <host>
@@ -1585,7 +1583,7 @@ mod snapshot {
         [build] rustc 0 <host> -> rustc 1 <host>
         [build] rustc 1 <host> -> std 1 <host>
         [build] rustc 1 <host> -> std 1 <target1>
-        [check] rustc 1 <host> -> rustc 2 <target1>
+        [check] rustc 1 <host> -> rustc 2 <target1> (73 crates)
         [check] rustc 1 <host> -> rustc 2 <target1>
         [check] rustc 1 <host> -> Rustdoc 2 <target1>
         [check] rustc 1 <host> -> rustc_codegen_cranelift 2 <target1>
@@ -1682,7 +1680,7 @@ mod snapshot {
                 .paths(&["library", "compiler"])
                 .args(&args)
                 .render_steps(), @r"
-        [check] rustc 0 <host> -> rustc 1 <host>
+        [check] rustc 0 <host> -> rustc 1 <host> (73 crates)
         [check] rustc 0 <host> -> rustc 1 <host>
         [check] rustc 0 <host> -> rustc_codegen_cranelift 1 <host>
         [check] rustc 0 <host> -> rustc_codegen_gcc 1 <host>