From 579f61106d19717e029c462ec25556aae09a4272 Mon Sep 17 00:00:00 2001
From: Alice Ryhl <alice@ryhl.io>
Date: Thu, 11 Nov 2021 21:53:15 +0100
Subject: [PATCH] ci: check for minimal versions with tokio_unstable (#4224)

---
 .github/workflows/ci.yml | 10 ++++++++++
 tokio/Cargo.toml         |  2 +-
 2 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 05f6e87f3..9fec5837e 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -248,6 +248,16 @@ jobs:
           # Update Cargo.lock to minimal version dependencies.
           cargo update -Z minimal-versions
           cargo hack check --all-features --ignore-private
+      - name: "check --all-features --unstable -Z minimal-versions"
+        env:
+          RUSTFLAGS: --cfg tokio_unstable -Dwarnings
+        run: |
+          # Remove dev-dependencies from Cargo.toml to prevent the next `cargo update`
+          # from determining minimal versions based on dev-dependencies.
+          cargo hack --remove-dev-deps --workspace
+          # Update Cargo.lock to minimal version dependencies.
+          cargo update -Z minimal-versions
+          cargo hack check --all-features --ignore-private
 
   fmt:
     name: fmt
diff --git a/tokio/Cargo.toml b/tokio/Cargo.toml
index aeebc36fc..fdd7e34ea 100644
--- a/tokio/Cargo.toml
+++ b/tokio/Cargo.toml
@@ -102,7 +102,7 @@ parking_lot = { version = "0.11.0", optional = true }
 # Currently unstable. The API exposed by these features may be broken at any time.
 # Requires `--cfg tokio_unstable` to enable.
 [target.'cfg(tokio_unstable)'.dependencies]
-tracing = { version = "0.1.21", default-features = false, features = ["std"], optional = true } # Not in full
+tracing = { version = "0.1.25", default-features = false, features = ["std"], optional = true } # Not in full
 
 [target.'cfg(unix)'.dependencies]
 libc = { version = "0.2.42", optional = true }