From c7f734d8c1c288ea5fc48391a419c23ade441cac Mon Sep 17 00:00:00 2001
From: David Tolnay <dtolnay@gmail.com>
Date: Mon, 25 Mar 2024 22:24:54 -0700
Subject: [PATCH 1/5] Explicitly install a Rust toolchain for cargo-outdated
 job

Debugging a recent cargo-outdated bug, it would have been nice not to
wonder whether a rustc version change in GitHub's runner image was a
contributing factor.
---
 .github/workflows/ci.yml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 50c14dc44..05df555b0 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -179,6 +179,7 @@ jobs:
     timeout-minutes: 45
     steps:
       - uses: actions/checkout@v4
+      - uses: dtolnay/rust-toolchain@stable
       - uses: dtolnay/install@cargo-outdated
       - run: cargo outdated --workspace --exit-code 1
       - run: cargo outdated --manifest-path fuzz/Cargo.toml --exit-code 1

From 6c7c709c40e10c319817f684e2632bebe3bf8459 Mon Sep 17 00:00:00 2001
From: BD103 <59022059+BD103@users.noreply.github.com>
Date: Fri, 29 Mar 2024 22:06:58 -0400
Subject: [PATCH 2/5] refactor: use `dep:` prefix for `quote` dependency

---
 Cargo.toml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Cargo.toml b/Cargo.toml
index 16a8d4164..756e80927 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -25,7 +25,7 @@ default = ["derive", "parsing", "printing", "clone-impls", "proc-macro"]
 derive = []
 full = []
 parsing = []
-printing = ["quote"]
+printing = ["dep:quote"]
 visit = []
 visit-mut = []
 fold = []

From 694f6044a8351c99b392da9c252409d80adef085 Mon Sep 17 00:00:00 2001
From: BD103 <59022059+BD103@users.noreply.github.com>
Date: Fri, 29 Mar 2024 22:15:08 -0400
Subject: [PATCH 3/5] feat: use optional dependency feature syntax `?`

This syntax needs Rust 1.60, so it will require a MSRV bump. If this is not wanted, I would be willing to revert it.
---
 Cargo.toml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Cargo.toml b/Cargo.toml
index 756e80927..76422ec22 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -31,7 +31,7 @@ visit-mut = []
 fold = []
 clone-impls = []
 extra-traits = []
-proc-macro = ["proc-macro2/proc-macro", "quote/proc-macro"]
+proc-macro = ["proc-macro2/proc-macro", "quote?/proc-macro"]
 test = ["syn-test-suite/all-features"]
 
 [dependencies]

From 4913ab2fe69d03a0a1821dc6c40fe6fabfc44d8f Mon Sep 17 00:00:00 2001
From: BD103 <59022059+BD103@users.noreply.github.com>
Date: Fri, 29 Mar 2024 22:17:16 -0400
Subject: [PATCH 4/5] chore: bump msrv to 1.60

---
 .github/workflows/ci.yml | 1 +
 Cargo.toml               | 2 +-
 README.md                | 2 +-
 3 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 05df555b0..896f4f61a 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -37,6 +37,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
+        # TODO: Remove 1.56 CI
         rust: [stable, beta, 1.60.0, 1.56.0]
         include:
           - rust: nightly
diff --git a/Cargo.toml b/Cargo.toml
index 76422ec22..d1b564c4b 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -18,7 +18,7 @@ include = [
 keywords = ["macros", "syn"]
 license = "MIT OR Apache-2.0"
 repository = "https://github.com/dtolnay/syn"
-rust-version = "1.56"
+rust-version = "1.60"
 
 [features]
 default = ["derive", "parsing", "printing", "clone-impls", "proc-macro"]
diff --git a/README.md b/README.md
index e8d99abcf..04f9bf6cb 100644
--- a/README.md
+++ b/README.md
@@ -46,7 +46,7 @@ contains some APIs that may be useful more generally.
 [`syn::DeriveInput`]: https://docs.rs/syn/2.0/syn/struct.DeriveInput.html
 [parser functions]: https://docs.rs/syn/2.0/syn/parse/index.html
 
-*Version requirement: Syn supports rustc 1.56 and up.*
+*Version requirement: Syn supports rustc 1.60 and up.*
 
 [*Release notes*](https://github.com/dtolnay/syn/releases)
 

From d7650b2af89274b94172e671e92bb72acfac3a37 Mon Sep 17 00:00:00 2001
From: BD103 <59022059+BD103@users.noreply.github.com>
Date: Fri, 29 Mar 2024 22:43:05 -0400
Subject: [PATCH 5/5] chore: bump msrv to 1.60 (pt. 2)

This change is using 6e8a372 for reference. I'm not entirely sure what the purpost of `manifestpath` was, so I may have done something incorrect.
---
 .github/workflows/ci.yml | 34 ++++++++++++++++------------------
 tests/crate/Cargo.toml   | 26 --------------------------
 tests/crate/test.rs      |  1 -
 3 files changed, 16 insertions(+), 45 deletions(-)
 delete mode 100644 tests/crate/Cargo.toml
 delete mode 100644 tests/crate/test.rs

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 896f4f61a..4bd0f723c 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -37,8 +37,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        # TODO: Remove 1.56 CI
-        rust: [stable, beta, 1.60.0, 1.56.0]
+        rust: [stable, beta, 1.60.0]
         include:
           - rust: nightly
             components: rustc-dev
@@ -53,7 +52,6 @@ jobs:
             os: windows
     env:
       target: ${{matrix.target && format('--target={0}', matrix.target)}}
-      manifestpath: ${{matrix.rust == '1.56.0' && '--manifest-path tests/crate/Cargo.toml' || ''}}
     timeout-minutes: 45
     steps:
       - uses: actions/checkout@v4
@@ -62,21 +60,21 @@ jobs:
           toolchain: ${{matrix.rust}}
           targets: ${{matrix.target}}
           components: ${{matrix.components}}
-      - run: cargo check ${{env.manifestpath}} ${{env.target}} --no-default-features
-      - run: cargo check ${{env.manifestpath}} ${{env.target}}
-      - run: cargo check ${{env.manifestpath}} ${{env.target}} --features full
-      - run: cargo check ${{env.manifestpath}} ${{env.target}} --features 'fold visit visit-mut'
-      - run: cargo check ${{env.manifestpath}} ${{env.target}} --features 'full fold visit visit-mut'
-      - run: cargo check ${{env.manifestpath}} ${{env.target}} --no-default-features --features derive
-      - run: cargo check ${{env.manifestpath}} ${{env.target}} --no-default-features --features 'derive parsing'
-      - run: cargo check ${{env.manifestpath}} ${{env.target}} --no-default-features --features 'derive printing'
-      - run: cargo check ${{env.manifestpath}} ${{env.target}} --no-default-features --features 'proc-macro parsing printing'
-      - run: cargo check ${{env.manifestpath}} ${{env.target}} --no-default-features --features full
-      - run: cargo check ${{env.manifestpath}} ${{env.target}} --no-default-features --features 'full parsing'
-      - run: cargo check ${{env.manifestpath}} ${{env.target}} --no-default-features --features 'full printing'
-      - run: cargo check ${{env.manifestpath}} ${{env.target}} --no-default-features --features 'full parsing printing'
-      - run: cargo check ${{env.manifestpath}} ${{env.target}} --no-default-features --features 'fold visit visit-mut parsing printing'
-      - run: cargo check ${{env.manifestpath}} ${{env.target}} --no-default-features --features 'full fold visit visit-mut parsing printing'
+      - run: cargo check ${{env.target}} --no-default-features
+      - run: cargo check ${{env.target}}
+      - run: cargo check ${{env.target}} --features full
+      - run: cargo check ${{env.target}} --features 'fold visit visit-mut'
+      - run: cargo check ${{env.target}} --features 'full fold visit visit-mut'
+      - run: cargo check ${{env.target}} --no-default-features --features derive
+      - run: cargo check ${{env.target}} --no-default-features --features 'derive parsing'
+      - run: cargo check ${{env.target}} --no-default-features --features 'derive printing'
+      - run: cargo check ${{env.target}} --no-default-features --features 'proc-macro parsing printing'
+      - run: cargo check ${{env.target}} --no-default-features --features full
+      - run: cargo check ${{env.target}} --no-default-features --features 'full parsing'
+      - run: cargo check ${{env.target}} --no-default-features --features 'full printing'
+      - run: cargo check ${{env.target}} --no-default-features --features 'full parsing printing'
+      - run: cargo check ${{env.target}} --no-default-features --features 'fold visit visit-mut parsing printing'
+      - run: cargo check ${{env.target}} --no-default-features --features 'full fold visit visit-mut parsing printing'
       - if: matrix.components == 'rustc-dev'
         run: cargo check --benches --all-features --release
 
diff --git a/tests/crate/Cargo.toml b/tests/crate/Cargo.toml
deleted file mode 100644
index 54a305fdb..000000000
--- a/tests/crate/Cargo.toml
+++ /dev/null
@@ -1,26 +0,0 @@
-[workspace]
-[package]
-name = "syn-test-suite"
-version = "0.0.0"
-authors = ["David Tolnay <dtolnay@gmail.com>"]
-edition = "2021"
-publish = false
-
-[lib]
-path = "test.rs"
-
-[dependencies]
-syn = { path = "../..", default-features = false }
-
-[features]
-default = ["derive", "parsing", "printing", "clone-impls", "proc-macro"]
-derive = ["syn/derive"]
-full = ["syn/full"]
-parsing = ["syn/parsing"]
-printing = ["syn/printing"]
-visit = ["syn/visit"]
-visit-mut = ["syn/visit-mut"]
-fold = ["syn/fold"]
-clone-impls = ["syn/clone-impls"]
-extra-traits = ["syn/extra-traits"]
-proc-macro = ["syn/proc-macro"]
diff --git a/tests/crate/test.rs b/tests/crate/test.rs
deleted file mode 100644
index 6c7766063..000000000
--- a/tests/crate/test.rs
+++ /dev/null
@@ -1 +0,0 @@
-pub use syn::*;