diff --git a/build_sysroot/Cargo.toml b/build_sysroot/Cargo.toml
index 1039f4613efc..24feabb2226c 100644
--- a/build_sysroot/Cargo.toml
+++ b/build_sysroot/Cargo.toml
@@ -7,7 +7,7 @@ version = "0.0.0"
 core = { path = "./sysroot_src/src/libcore" }
 compiler_builtins = "0.1"
 alloc = { path = "./sysroot_src/src/liballoc" }
-std = { path = "./sysroot_src/src/libstd", features = ["panic_unwind"] }
+std = { path = "./sysroot_src/src/libstd", features = ["panic_unwind", "backtrace"] }
 test = { path = "./sysroot_src/src/libtest" }
 
 alloc_system = { path = "./alloc_system" }
diff --git a/patches/0019-Workaround-rust-regression.patch b/patches/0019-Workaround-rust-regression.patch
deleted file mode 100644
index 524af0b39a62..000000000000
--- a/patches/0019-Workaround-rust-regression.patch
+++ /dev/null
@@ -1,23 +0,0 @@
-From 8956b4fa10af0df2f8912f6116aa1e970dc0283a Mon Sep 17 00:00:00 2001
-From: bjorn3 <bjorn3@users.noreply.github.com>
-Date: Sun, 18 Aug 2019 17:44:47 +0200
-Subject: [PATCH] Workaround rust regression
-
----
- src/liballoc/macros.rs | 2 +-
- 1 file changed, 1 insertion(+), 1 deletion(-)
-
-diff --git a/src/liballoc/macros.rs b/src/liballoc/macros.rs
-index 0b5e186..250c419 100644
---- a/src/liballoc/macros.rs
-+++ b/src/liballoc/macros.rs
-@@ -98,5 +98,5 @@ macro_rules! vec {
- #[macro_export]
- #[stable(feature = "rust1", since = "1.0.0")]
- macro_rules! format {
--    ($($arg:tt)*) => ($crate::fmt::format(::core::format_args!($($arg)*)))
-+    ($($arg:tt)*) => ($crate::fmt::format(format_args!($($arg)*)))
- }
--- 
-2.20.1 (Apple Git-117)
-