Document that cargo test --release uses profile.bench

diff --git a/src/doc/book/src/reference/manifest.md b/src/doc/book/src/reference/manifest.md
index 6a79c7a1bac438f38c3285f759a4d065f5f7821f..34dff512a3b1e04a48252fa80fcc0ac9bd927ab4 100644 (file)
--- a/src/doc/book/src/reference/manifest.md
+++ b/src/doc/book/src/reference/manifest.md
@@ -310,7 +310,7 @@ debug-assertions = true
 codegen-units = 1
 panic = 'unwind'
 
-# The benchmarking profile, used for `cargo bench`.
+# The benchmarking profile, used for `cargo bench` and `cargo test --release`.
 [profile.bench]
 opt-level = 3
 debug = false