Upgrade remain to 0.2.12

This project was upgraded with external_updater.
Usage: tools/external_updater/updater.sh update external/rust/crates/remain
For more info, check https://cs.android.com/android/platform/superproject/+/main:tools/external_updater/README.md

Test: TreeHugger
Change-Id: Ic78855d22fce79150a837be6eacc94cbbc41039d

11 files changed, 73 insertions, 47 deletions

diff --git a/.cargo_vcs_info.json b/.cargo_vcs_info.json
index 85fde91..258bfa4 100644
--- a/.cargo_vcs_info.json
+++ b/.cargo_vcs_info.json
@@ -1,6 +1,6 @@
 {
   "git": {
-    "sha1": "d9197a8b0b0b5652c22fc9ded094543544dc83d2"
+    "sha1": "d933911a0b6aa090c6158eaae3c40a4739b8dbaf"
   },
   "path_in_vcs": ""
 }
\ No newline at end of file
diff --git a/.clippy.toml b/.clippy.toml
deleted file mode 100644
index 0d369b5..0000000
--- a/.clippy.toml
+++ /dev/null
@@ -1 +0,0 @@
-msrv = "1.56.0"
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 6a4eee9..9b34038 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -23,7 +23,7 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 45
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: dtolnay/rust-toolchain@nightly
       - name: Enable type layout randomization
         run: echo RUSTFLAGS=${RUSTFLAGS}\ -Zrandomize-layout >> $GITHUB_ENV
@@ -40,7 +40,7 @@ jobs:
         rust: [beta, stable, 1.56.0]
     timeout-minutes: 45
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: dtolnay/rust-toolchain@master
         with:
           toolchain: ${{matrix.rust}}
@@ -48,13 +48,39 @@ jobs:
         env:
           RUSTFLAGS: --cfg remain_stable_testing ${{env.RUSTFLAGS}}
 
+  minimal:
+    name: Minimal versions
+    needs: pre_ci
+    if: needs.pre_ci.outputs.continue
+    runs-on: ubuntu-latest
+    timeout-minutes: 45
+    steps:
+      - uses: actions/checkout@v4
+      - uses: dtolnay/rust-toolchain@nightly
+      - run: cargo generate-lockfile -Z minimal-versions
+      - run: cargo check --locked
+
+  doc:
+    name: Documentation
+    needs: pre_ci
+    if: needs.pre_ci.outputs.continue
+    runs-on: ubuntu-latest
+    timeout-minutes: 45
+    env:
+      RUSTDOCFLAGS: -Dwarnings
+    steps:
+      - uses: actions/checkout@v4
+      - uses: dtolnay/rust-toolchain@nightly
+      - uses: dtolnay/install@cargo-docs-rs
+      - run: cargo docs-rs
+
   clippy:
     name: Clippy
     runs-on: ubuntu-latest
     if: github.event_name != 'pull_request'
     timeout-minutes: 45
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: dtolnay/rust-toolchain@clippy
       - run: cargo clippy --tests -- -Dclippy::all -Dclippy::pedantic
 
@@ -65,8 +91,9 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 45
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: dtolnay/rust-toolchain@miri
+      - run: cargo miri setup
       - run: cargo miri test
         env:
           MIRIFLAGS: -Zmiri-strict-provenance
@@ -77,6 +104,6 @@ jobs:
     if: github.event_name != 'pull_request'
     timeout-minutes: 45
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: dtolnay/install@cargo-outdated
       - run: cargo outdated --workspace --exit-code 1
diff --git a/Android.bp b/Android.bp
index 53c4784..4ee7075 100644
--- a/Android.bp
+++ b/Android.bp
@@ -41,9 +41,9 @@ rust_proc_macro {
     name: "libremain",
     crate_name: "remain",
     cargo_env_compat: true,
-    cargo_pkg_version: "0.2.8",
+    cargo_pkg_version: "0.2.12",
     srcs: ["src/lib.rs"],
-    edition: "2018",
+    edition: "2021",
     rustlibs: [
         "libproc_macro2",
         "libquote",
@@ -55,14 +55,14 @@ rust_test_host {
     name: "remain_test_tests_stable",
     crate_name: "stable",
     cargo_env_compat: true,
-    cargo_pkg_version: "0.2.8",
+    cargo_pkg_version: "0.2.12",
     srcs: ["tests/stable.rs"],
     test_suites: ["general-tests"],
     auto_gen_config: true,
     test_options: {
         unit_test: true,
     },
-    edition: "2018",
+    edition: "2021",
     rustlibs: [
         "libproc_macro2",
         "libquote",
@@ -78,14 +78,14 @@ rust_test_host {
     name: "remain_test_tests_unstable",
     crate_name: "unstable",
     cargo_env_compat: true,
-    cargo_pkg_version: "0.2.8",
+    cargo_pkg_version: "0.2.12",
     srcs: ["tests/unstable.rs"],
     test_suites: ["general-tests"],
     auto_gen_config: true,
     test_options: {
         unit_test: true,
     },
-    edition: "2018",
+    edition: "2021",
     rustlibs: [
         "libproc_macro2",
         "libquote",
diff --git a/Cargo.toml b/Cargo.toml
index 685b30c..a65b7cc 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -10,10 +10,10 @@
 # See Cargo.toml.orig for the original contents.
 
 [package]
-edition = "2018"
+edition = "2021"
 rust-version = "1.56"
 name = "remain"
-version = "0.2.8"
+version = "0.2.12"
 authors = ["David Tolnay <dtolnay@gmail.com>"]
 description = "Compile-time checks that an enum, struct, or match is written in sorted order."
 documentation = "https://docs.rs/remain"
@@ -21,32 +21,34 @@ readme = "README.md"
 categories = [
     "development-tools",
     "no-std",
+    "no-std::no-alloc",
 ]
 license = "MIT OR Apache-2.0"
 repository = "https://github.com/dtolnay/remain"
 
 [package.metadata.docs.rs]
+rustdoc-args = ["--generate-link-to-definition"]
 targets = ["x86_64-unknown-linux-gnu"]
 
 [lib]
 proc-macro = true
 
 [dependencies.proc-macro2]
-version = "1.0"
+version = "1.0.74"
 
 [dependencies.quote]
-version = "1.0"
+version = "1.0.35"
 
 [dependencies.syn]
-version = "2.0"
+version = "2.0.46"
 features = [
     "full",
     "visit-mut",
 ]
 
 [dev-dependencies.rustversion]
-version = "1.0"
+version = "1.0.13"
 
 [dev-dependencies.trybuild]
-version = "1.0.49"
+version = "1.0.81"
 features = ["diff"]
diff --git a/Cargo.toml.orig b/Cargo.toml.orig
index d6cb234..f764958 100644
--- a/Cargo.toml.orig
+++ b/Cargo.toml.orig
@@ -1,11 +1,11 @@
 [package]
 name = "remain"
-version = "0.2.8"
+version = "0.2.12"
 authors = ["David Tolnay <dtolnay@gmail.com>"]
-categories = ["development-tools", "no-std"]
+categories = ["development-tools", "no-std", "no-std::no-alloc"]
 description = "Compile-time checks that an enum, struct, or match is written in sorted order."
 documentation = "https://docs.rs/remain"
-edition = "2018"
+edition = "2021"
 license = "MIT OR Apache-2.0"
 repository = "https://github.com/dtolnay/remain"
 rust-version = "1.56"
@@ -14,13 +14,14 @@ rust-version = "1.56"
 proc-macro = true
 
 [dependencies]
-proc-macro2 = "1.0"
-quote = "1.0"
-syn = { version = "2.0", features = ["full", "visit-mut"] }
+proc-macro2 = "1.0.74"
+quote = "1.0.35"
+syn = { version = "2.0.46", features = ["full", "visit-mut"] }
 
 [dev-dependencies]
-rustversion = "1.0"
-trybuild = { version = "1.0.49", features = ["diff"] }
+rustversion = "1.0.13"
+trybuild = { version = "1.0.81", features = ["diff"] }
 
 [package.metadata.docs.rs]
 targets = ["x86_64-unknown-linux-gnu"]
+rustdoc-args = ["--generate-link-to-definition"]
diff --git a/METADATA b/METADATA
index 4bd0564..bf9eb65 100644
--- a/METADATA
+++ b/METADATA
@@ -1,23 +1,20 @@
 # This project was upgraded with external_updater.
-# Usage: tools/external_updater/updater.sh update rust/crates/remain
-# For more info, check https://cs.android.com/android/platform/superproject/+/master:tools/external_updater/README.md
+# Usage: tools/external_updater/updater.sh update external/rust/crates/remain
+# For more info, check https://cs.android.com/android/platform/superproject/+/main:tools/external_updater/README.md
 
 name: "remain"
 description: "Compile-time checks that an enum, struct, or match is written in sorted order."
 third_party {
-  url {
-    type: HOMEPAGE
-    value: "https://crates.io/crates/remain"
-  }
-  url {
-    type: ARCHIVE
-    value: "https://static.crates.io/crates/remain/remain-0.2.8.crate"
-  }
-  version: "0.2.8"
   license_type: NOTICE
   last_upgrade_date {
-    year: 2023
-    month: 3
-    day: 27
+    year: 2024
+    month: 2
+    day: 7
+  }
+  homepage: "https://crates.io/crates/remain"
+  identifier {
+    type: "Archive"
+    value: "https://static.crates.io/crates/remain/remain-0.2.12.crate"
+    version: "0.2.12"
   }
 }
diff --git a/src/lib.rs b/src/lib.rs
index 298c478..44f81b1 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -143,7 +143,7 @@
 //! # fn main() {}
 //! ```
 
-#![doc(html_root_url = "https://docs.rs/remain/0.2.8")]
+#![doc(html_root_url = "https://docs.rs/remain/0.2.12")]
 #![allow(
     clippy::derive_partial_eq_without_eq,
     clippy::enum_glob_use,
@@ -183,7 +183,7 @@ pub fn sorted(args: TokenStream, input: TokenStream) -> TokenStream {
     let output = TokenStream::from(quote!(#input));
 
     match result {
-        Ok(_) => output,
+        Ok(()) => output,
         Err(err) => emit(&err, kind, output),
     }
 }
diff --git a/src/visit.rs b/src/visit.rs
index 72c07cb..3a4e578 100644
--- a/src/visit.rs
+++ b/src/visit.rs
@@ -67,7 +67,7 @@ fn check_and_insert_error(input: ExprMatch, out: &mut Expr) {
     let mut input = Input::Match(input);
 
     *out = match crate::check::sorted(&mut input) {
-        Ok(_) => parse_quote!(#input),
+        Ok(()) => parse_quote!(#input),
         Err(err) => {
             let err = err.to_compile_error();
             parse_quote!({
diff --git a/tests/stable.rs b/tests/stable.rs
index c67aead..d8df330 100644
--- a/tests/stable.rs
+++ b/tests/stable.rs
@@ -50,7 +50,7 @@ fn test_let() {
     let value = TestEnum::A;
 
     #[sorted]
-    let _ = match value {
+    let () = match value {
         TestEnum::A => {}
         #[remain::unsorted]
         TestEnum::Ignored => {}
diff --git a/tests/ui/let-unstable.rs b/tests/ui/let-unstable.rs
index 8d65c52..066fa8e 100644
--- a/tests/ui/let-unstable.rs
+++ b/tests/ui/let-unstable.rs
@@ -1,4 +1,4 @@
-#![feature(proc_macro_hygiene, stmt_expr_attributes)]
+#![feature(proc_macro_hygiene)]
 
 use remain::sorted;