diff --git a/coverage.txt b/coverage.txt
index e69de29..6a3289e 100644
--- a/coverage.txt
+++ b/coverage.txt
@@ -0,0 +1,50 @@
+mode: atomic
+github.com/FelixSeptem/mortise/error.go:13.43,15.2 1 0
+github.com/FelixSeptem/mortise/error.go:23.43,25.2 1 0
+github.com/FelixSeptem/mortise/error.go:32.35,34.2 1 0
+github.com/FelixSeptem/mortise/error.go:37.68,38.29 1 2
+github.com/FelixSeptem/mortise/error.go:43.2,43.12 1 0
+github.com/FelixSeptem/mortise/error.go:38.29,40.3 1 1
+github.com/FelixSeptem/mortise/error.go:40.8,40.36 1 1
+github.com/FelixSeptem/mortise/error.go:40.36,42.3 1 1
+github.com/FelixSeptem/mortise/mutex.go:21.52,23.2 1 6
+github.com/FelixSeptem/mortise/mutex.go:26.58,28.2 1 9
+github.com/FelixSeptem/mortise/mutex.go:31.62,34.2 2 6
+github.com/FelixSeptem/mortise/mutex.go:37.83,42.16 5 6
+github.com/FelixSeptem/mortise/mutex.go:45.2,46.16 2 6
+github.com/FelixSeptem/mortise/mutex.go:49.2,49.18 1 6
+github.com/FelixSeptem/mortise/mutex.go:52.2,53.16 2 1
+github.com/FelixSeptem/mortise/mutex.go:56.2,56.81 1 1
+github.com/FelixSeptem/mortise/mutex.go:59.2,59.26 1 0
+github.com/FelixSeptem/mortise/mutex.go:42.16,44.3 1 0
+github.com/FelixSeptem/mortise/mutex.go:46.16,48.3 1 0
+github.com/FelixSeptem/mortise/mutex.go:49.18,51.3 1 5
+github.com/FelixSeptem/mortise/mutex.go:53.16,55.3 1 0
+github.com/FelixSeptem/mortise/mutex.go:56.81,58.3 1 1
+github.com/FelixSeptem/mortise/mutex.go:63.69,68.16 5 2
+github.com/FelixSeptem/mortise/mutex.go:71.2,71.16 1 2
+github.com/FelixSeptem/mortise/mutex.go:74.2,75.16 2 2
+github.com/FelixSeptem/mortise/mutex.go:78.2,78.17 1 2
+github.com/FelixSeptem/mortise/mutex.go:81.2,81.81 1 1
+github.com/FelixSeptem/mortise/mutex.go:84.2,84.12 1 0
+github.com/FelixSeptem/mortise/mutex.go:68.16,70.3 1 0
+github.com/FelixSeptem/mortise/mutex.go:71.16,73.3 1 0
+github.com/FelixSeptem/mortise/mutex.go:75.16,77.3 1 0
+github.com/FelixSeptem/mortise/mutex.go:78.17,80.3 1 1
+github.com/FelixSeptem/mortise/mutex.go:81.81,83.3 1 1
+github.com/FelixSeptem/mortise/mutex.go:88.74,91.2 2 1
+github.com/FelixSeptem/mortise/mutex.go:94.93,97.16 3 0
+github.com/FelixSeptem/mortise/mutex.go:100.2,100.9 1 0
+github.com/FelixSeptem/mortise/mutex.go:97.16,99.3 1 0
+github.com/FelixSeptem/mortise/mutex.go:101.32,102.84 1 0
+github.com/FelixSeptem/mortise/mutex.go:103.32,104.84 1 0
+github.com/FelixSeptem/mortise/mutex.go:105.10,106.19 1 0
+github.com/FelixSeptem/mortise/mutex.go:126.44,127.28 1 3
+github.com/FelixSeptem/mortise/mutex.go:130.2,130.30 1 2
+github.com/FelixSeptem/mortise/mutex.go:141.2,141.57 1 0
+github.com/FelixSeptem/mortise/mutex.go:127.28,129.3 1 1
+github.com/FelixSeptem/mortise/mutex.go:130.30,132.23 2 2
+github.com/FelixSeptem/mortise/mutex.go:135.3,136.17 2 2
+github.com/FelixSeptem/mortise/mutex.go:139.3,139.16 1 2
+github.com/FelixSeptem/mortise/mutex.go:132.23,134.4 1 6
+github.com/FelixSeptem/mortise/mutex.go:136.17,138.4 1 0