Use option_env! instead of env!

ClickHouse · Aug 25, 2024 · 85f2b27 · 85f2b27
1 parent c4acbb9
commit 85f2b27
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/src/headers.rs b/src/headers.rs
@@ -4,8 +4,8 @@ use hyper::http::request::Builder;
 use std::collections::HashMap;
 
 // See https://doc.rust-lang.org/cargo/reference/environment-variables.html#environment-variables-cargo-sets-for-crates
-const PKG_VER: &str = env!("CARGO_PKG_VERSION", "unknown");
-const RUST_VER: &str = env!("CARGO_PKG_RUST_VERSION", "unknown");
+const PKG_VER: &str = option_env!("CARGO_PKG_VERSION").unwrap_or("unknown");
+const RUST_VER: &str = option_env!("CARGO_PKG_RUST_VERSION").unwrap_or("unknown");
 const OS: &str = std::env::consts::OS;
 
 fn get_user_agent(products_info: &[ProductInfo]) -> String {