FileNotFoundException if `build/scoverage` dir does not exist

[gabrieljones]

> ./gradlew -version                        

------------------------------------------------------------
Gradle 8.10.2
------------------------------------------------------------

Build time:    2024-09-23 21:28:39 UTC
Revision:      415adb9e06a516c44b391edff552fd42139443f7

Kotlin:        1.9.24
Groovy:        3.0.22
Ant:           Apache Ant(TM) version 1.10.14 compiled on August 16 2023
Launcher JVM:  21.0.4 (Eclipse Adoptium 21.0.4+7-LTS)
Daemon JVM:    /Users/XXX/.sdkman/candidates/java/21.0.4-tem (no JDK specified, using current Java home)
OS:            Mac OS X 14.6.1 aarch64

org.scoverage:gradle-scoverage:8.1

org.scoverage:scalac-scoverage-domain_2.13:2.2.1=scoverage
org.scoverage:scalac-scoverage-plugin_2.13.15:2.2.1=scoverage
org.scoverage:scalac-scoverage-reporter_2.13:2.2.1=scoverage
org.scoverage:scalac-scoverage-runtime_2.13:2.2.1=scoverage
org.scoverage:scalac-scoverage-serializer_2.13:2.2.1=scoverage

Reproduce:

rm -r build/scoverage
./gradlew reportTestScoverage

Workaround:

mkdir -p build/scoverage
./gradlew reportTestScoverage