Bump cexpr to 0.5

.github/workflows/bindgen.yml

@@ -42,11 +42,11 @@ jobs:
           profile: minimal
           # MSRV below is documented in README.md, please update that if you
           # change this.
-          toolchain: 1.40.0
+          toolchain: 1.44.0
           override: true
 
       - name: Build with msrv
-        run: rm Cargo.lock && cargo +1.40.0 build --lib
+        run: rm Cargo.lock && cargo +1.44.0 build --lib
 
   quickchecking:
     runs-on: ubuntu-latest

Cargo.toml

@@ -47,7 +47,7 @@ tempfile = "3"
 
 [dependencies]
 bitflags = "1.0.3"
-cexpr = "0.4"
+cexpr = "0.5"
 # This kinda sucks: https://github.com/rust-lang/cargo/issues/1982
 clap = { version = "2", optional = true }
 clang-sys = { version = "1", features = ["clang_6_0"] }
@@ -59,8 +59,6 @@ regex = { version = "1.0", default-features = false , features = [ "std", "unico
 which = { version = "3.0", optional = true, default-features = false }
 shlex = "1"
 rustc-hash = "1.0.1"
-# New validation in 0.3.6 breaks bindgen-integration:
-# https://github.com/alexcrichton/proc-macro2/commit/489c642.
 proc-macro2 = { version = "1", default-features = false }
 
 [dependencies.env_logger]

README.md

@@ -39,7 +39,7 @@ extern "C" {
 
 ## MSRV
 
-The minimum supported Rust version is **1.40**.
+The minimum supported Rust version is **1.44**.
 
 No MSRV bump policy has been established yet, so MSRV may increase in any release.