Raise required compiler to rust 1.56

.github/workflows/ci.yml

@@ -38,19 +38,6 @@ jobs:
       - run: cargo test
       - run: cargo run --manifest-path benches/Cargo.toml
 
-  msrv:
-    name: Rust 1.31.0
-    needs: pre_ci
-    if: needs.pre_ci.outputs.continue
-    runs-on: ubuntu-latest
-    timeout-minutes: 45
-    steps:
-      - uses: actions/checkout@v3
-      - uses: dtolnay/rust-toolchain@1.31.0
-        with:
-          components: rust-src
-      - run: cargo check
-
   minimal:
     name: Minimal versions
     needs: pre_ci

Cargo.toml

@@ -10,7 +10,7 @@ edition = "2018"
 keywords = ["macros", "syn"]
 license = "MIT OR Apache-2.0"
 repository = "https://github.com/dtolnay/quote"
-rust-version = "1.31"
+rust-version = "1.56"
 
 [dependencies]
 proc-macro2 = { version = "1.0.63", default-features = false }

README.md

@@ -34,7 +34,7 @@ macros.
 quote = "1.0"
 ```
 
-*Version requirement: Quote supports rustc 1.31 and up.*<br>
+*Version requirement: Quote supports rustc 1.56 and up.*<br>
 [*Release notes*](https://github.com/dtolnay/quote/releases)
 
 <br>