From e2cf6f2b01f3ac990a1f11af3cd5fbcc5e3d8f14 Mon Sep 17 00:00:00 2001
From: Pietro Albini <pietro@pietroalbini.org>
Date: Wed, 9 Oct 2019 09:22:44 +0200
Subject: [PATCH] fix rustflags being concatenated without spaces between them

---
 src/docbuilder/rustwide_builder.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/docbuilder/rustwide_builder.rs b/src/docbuilder/rustwide_builder.rs
index c855162c8..1d128c02b 100644
--- a/src/docbuilder/rustwide_builder.rs
+++ b/src/docbuilder/rustwide_builder.rs
@@ -398,7 +398,7 @@ impl RustwideBuilder {
                     "RUSTFLAGS",
                     metadata
                         .rustc_args
-                        .map(|args| args.join(""))
+                        .map(|args| args.join(" "))
                         .unwrap_or("".to_owned()),
                 )
                 .env("RUSTDOCFLAGS", rustdoc_flags.join(" "))