From 6e8e3c967ada43ba47d0b85842607a5f975c5c81 Mon Sep 17 00:00:00 2001
From: Bruno Oliveira <nicoddemus@gmail.com>
Date: Tue, 10 Apr 2018 21:07:34 -0300
Subject: [PATCH] Add changelog entry for #2798

---
 changelog/2798.bugfix.rst | 3 +++
 1 file changed, 3 insertions(+)
 create mode 100644 changelog/2798.bugfix.rst

diff --git a/changelog/2798.bugfix.rst b/changelog/2798.bugfix.rst
new file mode 100644
index 00000000000..dc24a724c32
--- /dev/null
+++ b/changelog/2798.bugfix.rst
@@ -0,0 +1,3 @@
+Reset ``sys.last_type``, ``sys.last_value`` and ``sys.last_traceback`` before each test executes. Those attributes
+are added by pytest during the test run to aid debugging, but were never reset so they would create a leaking
+reference to the last failing test's frame which in turn could never be reclaimed by the garbage collector.