Only run check-linkchecker when actually building docs

Otherwise the build fails, when running tests but not building docs, e.g.: https://buildd.debian.org/status/fetch.php?pkg=rustc&arch=ppc64el&ver=1.17.0%2Bdfsg2-3&stamp=1497403375&raw=0
2017-06-15 13:25:15 +02:00 · 2017-06-15 13:25:15 +02:00 · 13b1a80505
commit 13b1a80505
parent 62c245281c
1 changed files with 1 additions and 1 deletions
--- a/src/bootstrap/step.rs
+++ b/src/bootstrap/step.rs
@ -463,7 +463,7 @@ fn crate_rule<'a, 'b>(build: &'a Build,
    rules.test("check-linkchecker", "src/tools/linkchecker")
         .dep(|s| s.name("tool-linkchecker").stage(0))
         .dep(|s| s.name("default:doc"))
-         .default(true)
+         .default(build.config.docs)
         .host(true)
         .run(move |s| check::linkcheck(build, s.target));
    rules.test("check-cargotest", "src/tools/cargotest")