fix(xtask): properly trim emscripten version at the source (tree-sitter#4402)

* fix(xtask): properly trim emscripten version at the source

* fix(loader): trim emscripten version in `cargo:rustc-env=` print

Author: WillLillis

cli/loader/build.rs

@@ -9,5 +9,8 @@ fn main() {
     );
 
     let emscripten_version = std::fs::read_to_string("emscripten-version").unwrap();
-    println!("cargo:rustc-env=EMSCRIPTEN_VERSION={emscripten_version}");
+    println!(
+        "cargo:rustc-env=EMSCRIPTEN_VERSION={}",
+        emscripten_version.trim()
+    );
 }

xtask/src/build_wasm.rs

@@ -107,7 +107,7 @@ pub fn run_wasm(args: &BuildWasm) -> Result<()> {
             };
 
             // Run `emcc` in a container using the `emscripten-slim` image
-            command.args([EMSCRIPTEN_TAG.trim(), "emcc"]);
+            command.args([EMSCRIPTEN_TAG, "emcc"]);
             command
         }
     };

xtask/src/main.rs

@@ -170,11 +170,12 @@ struct UpgradeWasmtime {
 
 const BUILD_VERSION: &str = env!("CARGO_PKG_VERSION");
 const BUILD_SHA: Option<&str> = option_env!("BUILD_SHA");
-const EMSCRIPTEN_VERSION: &str = include_str!("../../cli/loader/emscripten-version");
+const EMSCRIPTEN_VERSION: &str = include_str!("../../cli/loader/emscripten-version").trim_ascii();
 const EMSCRIPTEN_TAG: &str = concat!(
     "docker.io/emscripten/emsdk:",
     include_str!("../../cli/loader/emscripten-version")
-);
+)
+.trim_ascii();
 
 fn main() {
     let result = run();