deny warnings

Author: lovasoa

.github/workflows/sqlx.yml

@@ -29,6 +29,8 @@ jobs:
             --manifest-path sqlx-core/Cargo.toml
             --no-default-features
             --features offline,all-databases,all-types,migrate,runtime-${{ matrix.runtime }}-${{ matrix.tls }}
+        env:
+          RUSTFLAGS: -D warnings
 
       - run:
           cargo check

sqlx-core/src/net/mod.rs

@@ -3,6 +3,7 @@ mod tls;
 
 #[allow(unused_imports)]
 pub use socket::Socket;
+#[allow(unused_imports)]
 pub use tls::CertificateInput;
 #[allow(unused_imports)]
 pub use tls::MaybeTlsStream;

sqlx-macros/Cargo.toml

@@ -87,4 +87,10 @@ url = { version = "2.2.2", default-features = false }
 # This is basically default features plus "full" but if they add more defaults later then we don't need to enable those.
 version = "1.0.109"
 default-features = false
-features = ["full", "parsing", "printing", "derive", "clone-impls", "proc-macro"]
+features = ["full", "parsing", "printing", "derive", "clone-impls", "proc-macro"]
+
+[lints.rust]
+unexpected_cfgs = { level = "warn", check-cfg = [
+    'cfg(procmacro2_semver_exempt)',
+    'cfg(sqlx_macros_unstable)',
+] }