Auto merge of #4650 - main--:patch-1, r=matklad

Document that cargo test --release uses profile.bench It certainly makes sense but it's still surprising behavior when the docs clearly state `cargo bench` = `profile.bench`, `cargo test` = `profile.test`. Had to dive into the code to figure this out.
rust-lang · Oct 26, 2017 · e5562dd · e5562dd
2 parents f6ef634 + 4b8249f
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diff --git a/src/doc/book/src/reference/manifest.md b/src/doc/book/src/reference/manifest.md
@@ -311,7 +311,7 @@ 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

diff --git a/src/doc/manifest.md b/src/doc/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