Using insecure protocols with repositories has been deprecated. This is scheduled to be removed in Gradle 7.0. Switch Maven repository 'maven(http://packages.confluent.io/maven/)' to a secure protocol (like HTTPS) or allow insecure protocols, see https://docs.gradle.org/6.0.1/dsl/org.gradle.api.artifacts.repositories.UrlArtifactRepository.html#org.gradle.api.artifacts.repositories.UrlArtifactRepository:allowInsecureProtocol.

geiralund · geiralund · commit 16385b93b6d8 · 2020-05-06T14:17:14.000+02:00
diff --git a/build.gradle.kts b/build.gradle.kts
@@ -21,7 +21,7 @@ apply {
 repositories {
     mavenCentral()
     jcenter()
-    maven("http://packages.confluent.io/maven/")
+    maven("https://packages.confluent.io/maven/")
     maven("https://jitpack.io")
 }
 

Original file line number	Diff line number	Diff line change
`@@ -21,7 +21,7 @@ apply {`
`21`	`21`	`repositories {`
`22`	`22`	`mavenCentral()`
`23`	`23`	`jcenter()`
`24`		`- maven("http://packages.confluent.io/maven/")`
	`24`	`+ maven("https://packages.confluent.io/maven/")`
`25`	`25`	`maven("https://jitpack.io")`
`26`	`26`	`}`
`27`	`27`