Raise required compiler to rust 1.67

Required by recent versions of the cc crate.

    error: package `cc v1.0.106` cannot be built because it requires rustc 1.67 or newer, while the currently active rustc version is 1.63.0

.github/workflows/ci.yml

@@ -25,8 +25,7 @@ jobs:
           - rust: nightly
           - rust: beta
           - rust: stable
-          - rust: 1.63.0
-          - rust: 1.64.0
+          - rust: 1.67.0
           - rust: 1.70.0
           - rust: 1.74.0
           - name: Cargo on macOS
@@ -65,7 +64,7 @@ jobs:
         shell: bash
       - run: cargo run --manifest-path demo/Cargo.toml
       - run: cargo test --workspace ${{steps.testsuite.outputs.exclude}}
-        if: matrix.rust != '1.63.0' && matrix.rust != '1.64.0'
+        if: matrix.rust != '1.67.0'
       - run: cargo check --no-default-features --features alloc
         env:
           RUSTFLAGS: --cfg compile_error_if_std ${{env.RUSTFLAGS}}

Cargo.toml

@@ -12,7 +12,7 @@ keywords = ["ffi", "c++"]
 license = "MIT OR Apache-2.0"
 links = "cxxbridge1"
 repository = "https://github.com/dtolnay/cxx"
-rust-version = "1.63"
+rust-version = "1.67"
 
 [features]
 default = ["std", "cxxbridge-flags/default"] # c++11

README.md

@@ -24,7 +24,7 @@ cxx = "1.0"
 cxx-build = "1.0"
 ```
 
-*Compiler support: requires rustc 1.63+ and c++11 or newer*<br>
+*Compiler support: requires rustc 1.67+ and c++11 or newer*<br>
 *[Release notes](https://github.com/dtolnay/cxx/releases)*
 
 <br>

build.rs

@@ -37,8 +37,8 @@ fn main() {
             println!("cargo:rustc-check-cfg=cfg(skip_ui_tests)");
         }
 
-        if rustc.minor < 63 {
-            println!("cargo:warning=The cxx crate requires a rustc version 1.63.0 or newer.");
+        if rustc.minor < 67 {
+            println!("cargo:warning=The cxx crate requires a rustc version 1.67.0 or newer.");
             println!(
                 "cargo:warning=You appear to be building with: {}",
                 rustc.version,

flags/Cargo.toml

@@ -7,7 +7,7 @@ description = "Compiler configuration of the `cxx` crate (implementation detail)
 edition = "2021"
 license = "MIT OR Apache-2.0"
 repository = "https://github.com/dtolnay/cxx"
-rust-version = "1.63"
+rust-version = "1.67"
 
 [features]
 default = [] # c++11

gen/build/Cargo.toml

@@ -11,7 +11,7 @@ homepage = "https://cxx.rs"
 keywords = ["ffi", "build-dependencies"]
 license = "MIT OR Apache-2.0"
 repository = "https://github.com/dtolnay/cxx"
-rust-version = "1.63"
+rust-version = "1.67"
 
 [features]
 parallel = ["cc/parallel"]

gen/build/src/lib.rs

@@ -58,6 +58,7 @@
     clippy::inherent_to_string,
     clippy::into_iter_without_iter,
     clippy::items_after_statements,
+    clippy::manual_let_else,
     clippy::match_bool,
     clippy::match_on_vec_items,
     clippy::match_same_arms,

gen/lib/Cargo.toml

@@ -10,7 +10,7 @@ exclude = ["build.rs"]
 keywords = ["ffi"]
 license = "MIT OR Apache-2.0"
 repository = "https://github.com/dtolnay/cxx"
-rust-version = "1.63"
+rust-version = "1.67"
 
 [dependencies]
 codespan-reporting = "0.11.1"

gen/lib/src/lib.rs

@@ -20,6 +20,7 @@
     clippy::inherent_to_string,
     clippy::into_iter_without_iter,
     clippy::items_after_statements,
+    clippy::manual_let_else,
     clippy::match_bool,
     clippy::match_on_vec_items,
     clippy::match_same_arms,

macro/Cargo.toml

@@ -10,7 +10,7 @@ homepage = "https://cxx.rs"
 keywords = ["ffi"]
 license = "MIT OR Apache-2.0"
 repository = "https://github.com/dtolnay/cxx"
-rust-version = "1.63"
+rust-version = "1.67"
 
 [lib]
 proc-macro = true

macro/src/lib.rs

@@ -9,6 +9,7 @@
     clippy::into_iter_without_iter,
     clippy::items_after_statements,
     clippy::large_enum_variant,
+    clippy::manual_let_else,
     clippy::match_bool,
     clippy::match_same_arms,
     clippy::module_name_repetitions,

src/lib.rs

@@ -18,7 +18,7 @@
 //!
 //! <br>
 //!
-//! *Compiler support: requires rustc 1.63+ and c++11 or newer*<br>
+//! *Compiler support: requires rustc 1.67+ and c++11 or newer*<br>
 //! *[Release notes](https://github.com/dtolnay/cxx/releases)*
 //!
 //! <br>
@@ -400,6 +400,7 @@
     clippy::or_fun_call,
     clippy::ptr_arg,
     clippy::ptr_as_ptr,
+    clippy::ptr_cast_constness,
     clippy::toplevel_ref_arg,
     clippy::transmute_undefined_repr, // clippy bug: https://github.com/rust-lang/rust-clippy/issues/8417
     clippy::uninlined_format_args,

tests/test.rs

@@ -4,8 +4,9 @@
     clippy::cast_possible_truncation,
     clippy::cast_possible_wrap,
     clippy::float_cmp,
-    clippy::needless_pass_by_value,
     clippy::needless_pass_by_ref_mut,
+    clippy::needless_pass_by_value,
+    clippy::ptr_cast_constness,
     clippy::unit_cmp,
     clippy::unseparated_literal_suffix
 )]