update MSRV to 1.80 and test it in CI

.github/workflows/test.yml

@@ -18,6 +18,7 @@ jobs:
     strategy:
       matrix:
         rust:
+          - 1.80.0
           - stable
           - beta
         experimental:

Cargo.toml

@@ -6,7 +6,7 @@ edition = "2021"
 license = "Apache-2.0 OR MIT"
 repository = "https://github.com/salsa-rs/salsa"
 description = "A generic framework for on-demand, incrementalized computation (experimental)"
-rust-version = "1.76"
+rust-version = "1.80"
 
 [dependencies]
 arc-swap = "1"

tests/compile_fail.rs

@@ -1,4 +1,4 @@
-#[rustversion::stable]
+#[rustversion::all(stable, since(1.84))]
 #[test]
 fn compile_fail() {
     let t = trybuild::TestCases::new();