diff --git a/contrib/debian/copyright b/contrib/debian/copyright
index 39290b6fd..fee8739b6 100644
--- a/contrib/debian/copyright
+++ b/contrib/debian/copyright
@@ -124,6 +124,15 @@ Files: src/crypto/ctaes/*
 Copyright: Copyright (c) 2016 Pieter Wuille
 License: Expat
 
+Files: src/rust/include/tracing.h
+ src/rust/src/tracing_ffi.rs
+Copyright: Copyright (c) 2020 Jack Grigg
+License: Expat
+
+Files: src/rust/include/tracing/map.h
+Copyright: Copyright (c) 2012 William Swanson
+License: X11
+
 Files: src/secp256k1/*
 Copyright: Copyright (c) 2013 Pieter Wuille
 License: Expat
@@ -1235,3 +1244,28 @@ License: GPLv3-or-later-with-Autoconf-exception
 Comment:
  The "special exception" is extended to the versions of files covered by
  this license that are distributed with this software.
+
+License: X11
+ Permission is hereby granted, free of charge, to any person
+ obtaining a copy of this software and associated documentation
+ files (the "Software"), to deal in the Software without
+ restriction, including without limitation the rights to use, copy,
+ modify, merge, publish, distribute, sublicense, and/or sell copies
+ of the Software, and to permit persons to whom the Software is
+ furnished to do so, subject to the following conditions:
+
+ The above copyright notice and this permission notice shall be
+ included in all copies or substantial portions of the Software.
+
+ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY
+ CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
+ CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+ Except as contained in this notice, the names of the authors or
+ their institutions shall not be used in advertising or otherwise to
+ promote the sale, use or other dealings in this Software without
+ prior written authorization from the authors.
diff --git a/src/rust/include/tracing/map.h b/src/rust/include/tracing/map.h
new file mode 100644
index 000000000..acd5018e3
--- /dev/null
+++ b/src/rust/include/tracing/map.h
@@ -0,0 +1,70 @@
+/*
+ * Copyright (C) 2012 William Swanson
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use, copy,
+ * modify, merge, publish, distribute, sublicense, and/or sell copies
+ * of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY
+ * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
+ * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Except as contained in this notice, the names of the authors or
+ * their institutions shall not be used in advertising or otherwise to
+ * promote the sale, use or other dealings in this Software without
+ * prior written authorization from the authors.
+ */
+
+#ifndef MAP_H_INCLUDED
+#define MAP_H_INCLUDED
+
+#define EVAL0(...) __VA_ARGS__
+#define EVAL1(...) EVAL0(EVAL0(EVAL0(__VA_ARGS__)))
+#define EVAL2(...) EVAL1(EVAL1(EVAL1(__VA_ARGS__)))
+#define EVAL3(...) EVAL2(EVAL2(EVAL2(__VA_ARGS__)))
+#define EVAL4(...) EVAL3(EVAL3(EVAL3(__VA_ARGS__)))
+#define EVAL(...)  EVAL4(EVAL4(EVAL4(__VA_ARGS__)))
+
+#define MAP_END(...)
+#define MAP_OUT
+#define MAP_COMMA ,
+
+#define MAP_GET_END2() 0, MAP_END
+#define MAP_GET_END1(...) MAP_GET_END2
+#define MAP_GET_END(...) MAP_GET_END1
+#define MAP_NEXT0(test, next, ...) next MAP_OUT
+#define MAP_NEXT1(test, next) MAP_NEXT0(test, next, 0)
+#define MAP_NEXT(test, next)  MAP_NEXT1(MAP_GET_END test, next)
+
+#define MAP0(f, x, peek, ...) f(x) MAP_NEXT(peek, MAP1)(f, peek, __VA_ARGS__)
+#define MAP1(f, x, peek, ...) f(x) MAP_NEXT(peek, MAP0)(f, peek, __VA_ARGS__)
+
+#define MAP_LIST_NEXT1(test, next) MAP_NEXT0(test, MAP_COMMA next, 0)
+#define MAP_LIST_NEXT(test, next)  MAP_LIST_NEXT1(MAP_GET_END test, next)
+
+#define MAP_LIST0(f, x, peek, ...) f(x) MAP_LIST_NEXT(peek, MAP_LIST1)(f, peek, __VA_ARGS__)
+#define MAP_LIST1(f, x, peek, ...) f(x) MAP_LIST_NEXT(peek, MAP_LIST0)(f, peek, __VA_ARGS__)
+
+/**
+ * Applies the function macro `f` to each of the remaining parameters.
+ */
+#define MAP(f, ...) EVAL(MAP1(f, __VA_ARGS__, ()()(), ()()(), ()()(), 0))
+
+/**
+ * Applies the function macro `f` to each of the remaining parameters and
+ * inserts commas between the results.
+ */
+#define MAP_LIST(f, ...) EVAL(MAP_LIST1(f, __VA_ARGS__, ()()(), ()()(), ()()(), 0))
+
+#endif