From fd4bc88880bd7aeb2a1a5cb56fbfea639bc6f2e7 Mon Sep 17 00:00:00 2001
From: Jeremy Soller <jackpot51@gmail.com>
Date: Tue, 20 Dec 2016 17:52:47 -0700
Subject: [PATCH] Fix building without backtrace

---
 src/libstd/sys/redox/mod.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/libstd/sys/redox/mod.rs b/src/libstd/sys/redox/mod.rs
index d4811a3444fd..a8dbac28fb65 100644
--- a/src/libstd/sys/redox/mod.rs
+++ b/src/libstd/sys/redox/mod.rs
@@ -13,6 +13,7 @@
 use io::{self, ErrorKind};
 
 pub mod args;
+#[cfg(any(not(cargobuild), feature = "backtrace"))]
 pub mod backtrace;
 pub mod condvar;
 pub mod env;