diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..5162143
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+/tracing-0.1.19.crate
diff --git a/sources b/sources
new file mode 100644
index 0000000..3e0ea24
--- /dev/null
+++ b/sources
@@ -0,0 +1 @@
+SHA512 (tracing-0.1.19.crate) = ec27cfb994b49f8b2db4de244cbf60071e718034f01008313f2b35dce5b0b545fb245a530bc82bd759f2c0b6be4fc45363a246ca87b1ffcd0e39f838e72b1c4d