Release Scala 2.13.15-M1

[SethTisue]

Stage

• Make sure there are no stray staging repos on Sonatype
• Trigger a custom build on travis
  • Select the correct branch
  • Custom config: before_script: export SCALA_VER_BASE=2.13.15 SCALA_VER_SUFFIX=-M1
• https://app.travis-ci.com/github/scala/scala/builds/271920974
• Create the scala/scala tag locally: git tag -s -m "Scala 2.13.15-M1" v2.13.15-M1 4867f4512429772a15c5e3790a70ad833bd15887

Release

• Push scala/scala tag: git push https://github.com/scala/scala.git v2.13.15-M1
• Promote staging repos: st_stagingRepoPromote [scala-repo], st_stagingRepoPromote [modules-repo] (or use oss.sonatype.org web UI)

Find the release on Maven Central

• https://repo1.maven.org/maven2/org/scala-lang/scala-compiler/2.13.15-M1/

Afterwards

• Create a scala/scala PR to:
  • update starr.version in /versions.properties

[SethTisue]

sigh,

[error] Caused by: java.io.IOException: Server returned HTTP response code: 502 for URL: https://oss.sonatype.org/service/local/staging/deploy/maven2/org/scala-lang/scala-reflect/2.13.15-M1/scala-reflect-2.13.15-M1-sources.jar.asc.sha1

hopefully transient? I'll re-run

[SethTisue]

re-run fixed it

[SethTisue]

PR scala/scala#10847