Merge pull request #14 from rust-osdev/p

 Error when trying to build with stable

Author: phil-opp

CHANGELOG.md

@@ -5,6 +5,9 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 
 ## [Unreleased]
 
+## [v0.5.0] - 2018-10-01
+- Error instead of warn when `cargo xbuild` is executed with a stable or beta compiler.
+
 ## [v0.4.9] - 2018-08-20
 - Add `cargo xclippy` command for invoking `cargo clippy`
 
@@ -361,7 +364,8 @@ stage = 1
 
 - Initial release
 
-[Unreleased]: https://github.com/rust-osdev/cargo-xbuild/compare/v0.4.9...HEAD
+[Unreleased]: https://github.com/rust-osdev/cargo-xbuild/compare/v0.5.0...HEAD
+[v0.5.0]: https://github.com/rust-osdev/cargo-xbuild/compare/v0.4.9...v0.5.0
 [v0.4.9]: https://github.com/rust-osdev/cargo-xbuild/compare/v0.4.8...v0.4.9
 [v0.4.8]: https://github.com/rust-osdev/cargo-xbuild/compare/v0.4.7...v0.4.8
 [v0.4.7]: https://github.com/rust-osdev/cargo-xbuild/compare/v0.4.6...v0.4.7

Cargo.lock

@@ -8,7 +8,7 @@ keywords = ["cli", "cross", "compilation", "std", "osdev"]
 license = "MIT OR Apache-2.0"
 name = "cargo-xbuild"
 repository = "https://github.com/rust-osdev/cargo-xbuild"
-version = "0.4.9"
+version = "0.5.0"
 
 [lib]
 name = "xargo_lib"

Cargo.toml

@@ -136,7 +136,7 @@ fn run(command_name: &str) -> Result<Option<ExitStatus>> {
     }
 }
 
-fn build(args: cli::Args, command_name: &str) -> Result<(ExitStatus)> {
+fn build(args: cli::Args, command_name: &str) -> Result<ExitStatus> {
     let verbose = args.verbose();
     let meta = rustc::version();
     let cd = CurrentDirectory::get()?;
@@ -161,13 +161,10 @@ fn build(args: cli::Args, command_name: &str) -> Result<(ExitStatus)> {
             sysroot.src()?
         },
         Channel::Stable | Channel::Beta => {
-            writeln!(
-                io::stderr(),
-                "WARNING: the sysroot can't be built for the {:?} channel. \
+            bail!(
+                "The sysroot can't be built for the {:?} channel. \
                  Switch to nightly.",
-                meta.channel
-            ).ok();
-            return cargo::run(&args, verbose);
+                meta.channel);
         }
     };