2 files changed, 3 insertions, 0 deletions
diff --git a/src/libstd/sys/common/mod.rs b/src/libstd/sys/common/mod.rs
index c9279883ae5..a1f3f477b3a 100644
--- a/src/libstd/sys/common/mod.rs
+++ b/src/libstd/sys/common/mod.rs
@@ -28,6 +28,7 @@ macro_rules! rtassert {
 
 pub mod args;
 pub mod at_exit_imp;
+#[cfg(any(not(cargobuild), feature = "backtrace"))]
 pub mod backtrace;
 pub mod condvar;
 pub mod io;
@@ -42,6 +43,7 @@ pub mod thread_local;
 pub mod util;
 pub mod wtf8;
 
+#[cfg(any(not(cargobuild), feature = "backtrace"))]
 #[cfg(any(all(unix, not(any(target_os = "macos", target_os = "ios", target_os = "emscripten"))),
           all(windows, target_env = "gnu")))]
 pub mod gnu;
diff --git a/src/libstd/sys/unix/mod.rs b/src/libstd/sys/unix/mod.rs
index f0fd42fc99b..1c25c8f77c1 100644
--- a/src/libstd/sys/unix/mod.rs
+++ b/src/libstd/sys/unix/mod.rs
@@ -30,6 +30,7 @@ use libc;
 pub mod weak;
 
 pub mod android;
+#[cfg(any(not(cargobuild), feature = "backtrace"))]
 pub mod backtrace;
 pub mod condvar;
 pub mod ext;