From 8b366849481f76ae7a1c738c24bf48e95aed83c6 Mon Sep 17 00:00:00 2001
From: David Tolnay <dtolnay@gmail.com>
Date: Wed, 24 May 2023 08:14:53 -0700
Subject: [PATCH] Hide dev-dependencies from old cargo

    error: failed to select a version for the requirement `clap = "^4"`
      candidate versions found which didn't match: 3.2.25, 3.2.24, 3.2.23, ...
      location searched: crates.io index
    required by package `criterion v0.5.0`
        ... which is depended on by `unicode-ident v1.0.8 (/home/runner/work/unicode-ident/unicode-ident)`
---
 .github/workflows/ci.yml |  4 ++--
 tests/crate/.gitignore   |  2 ++
 tests/crate/Cargo.toml   | 14 ++++++++++++++
 tests/crate/test.rs      |  3 +++
 4 files changed, 21 insertions(+), 2 deletions(-)
 create mode 100644 tests/crate/.gitignore
 create mode 100644 tests/crate/Cargo.toml
 create mode 100644 tests/crate/test.rs

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index b74694e..50363ca 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -44,7 +44,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        rust: [nightly, beta, stable]
+        rust: [nightly, beta, stable, 1.64.0]
     timeout-minutes: 45
     steps:
       - uses: actions/checkout@v3
@@ -66,7 +66,7 @@ jobs:
     steps:
       - uses: actions/checkout@v3
       - uses: dtolnay/rust-toolchain@1.31.0
-      - run: cargo check
+      - run: cargo check --manifest-path tests/crate/Cargo.toml
 
   clippy:
     name: Clippy
diff --git a/tests/crate/.gitignore b/tests/crate/.gitignore
new file mode 100644
index 0000000..4fffb2f
--- /dev/null
+++ b/tests/crate/.gitignore
@@ -0,0 +1,2 @@
+/target
+/Cargo.lock
diff --git a/tests/crate/Cargo.toml b/tests/crate/Cargo.toml
new file mode 100644
index 0000000..5d71a4d
--- /dev/null
+++ b/tests/crate/Cargo.toml
@@ -0,0 +1,14 @@
+[package]
+name = "unicode-ident-test"
+version = "0.0.0"
+authors = ["David Tolnay <dtolnay@gmail.com>"]
+edition = "2018"
+publish = false
+
+[lib]
+path = "test.rs"
+
+[dependencies]
+unicode-ident = { path = "../.." }
+
+[workspace]
diff --git a/tests/crate/test.rs b/tests/crate/test.rs
new file mode 100644
index 0000000..0881831
--- /dev/null
+++ b/tests/crate/test.rs
@@ -0,0 +1,3 @@
+#![no_std]
+
+pub use unicode_ident::*;