Merge pull request #2517 from grafana/release/v0.38.1

v0.38.1 release

Author: oleiade

lib/consts/consts.go

@@ -28,7 +28,7 @@ import (
 )
 
 // Version contains the current semantic version of k6.
-const Version = "0.38.0"
+const Version = "0.38.1"
 
 // VersionDetails can be set externally as part of the build process
 var VersionDetails = "" // nolint:gochecknoglobals

release notes/v0.38.1.md

@@ -0,0 +1,9 @@
+k6 v0.38.1 is a patch release containing a bugfix!
+
+### Threshold sub-metric selectors containing reserved symbols would fail ([#2512](https://github.com/grafana/k6/issues/2512))
+
+There was a bug in threshold sub-metric selector parsing, which led to errors when users would use specific symbols such as `{`, `}` or `:` as part of their definitions. For instance, thresholds used for sub-metrics with [URL Grouping](https://k6.io/docs/using-k6/http-requests/#url-grouping) like `http_req_duration{name:"http://example.com/${}"}` would have led to failures in `v0.38.0`. 
+
+The error messages for invalid metric, sub-metric and threshold definitions were also improved.
+
+Special thanks to @efdknittlfrank, who reported and helped us track down the issue.