Eclipse Marketplace Update Site Composite Repo of Buildship is broken

[mhoffrog]

Issue

At the time being the P2 composite repo at the Eclipse Marketplace listed Update Site URL https://download.eclipse.org/buildship/updates/e410/releases/3.x is broken.

Root Cause

The P2 composite content file at https://download.eclipse.org/buildship/updates/e410/releases/3.x/compositeContent.jar
contains a non existing folder <child location='3.1.10.v20250903-1508/'/> does not exist!
Current (at 18-Dec-2025 18:54 CET) unzipped content of the inner compositeContent.xml:

<?xml version='1.0' encoding='UTF-8'?>
<?compositeMetadataRepository version='1.0.0'?>
<repository name='Buildship' type='org.eclipse.equinox.internal.p2.metadata.repository.CompositeMetadataRepository' version='1.0.0'>
   <properties size='3'>
    <property name='p2.timestamp' value='1756988378'/>
    <property name='p2.compressed' value='true'/>
    <property name='p2.atomic.composite.loading' value='true'/>
  </properties>
  <children size='15'>
    <child location='3.0.0.v20181205-1821/'/>
    <child location='3.0.1.v20181217-1554/'/>
    <child location='3.1.0.v20190501-0830/'/>
    <child location='3.1.1.v20190701-1623/'/>
    <child location='3.1.10.v20240802-1613/'/>
    <child location='3.1.10.v20250903-1508/'/>
    <child location='3.1.11.v20250904-1213/'/>
    <child location='3.1.2.v20190903-1732/'/>
    <child location='3.1.3.v20191117-2045/'/>
    <child location='3.1.4.v20200326-1718/'/>
    <child location='3.1.5.v20210113-0904/'/>
    <child location='3.1.6.v20220511-1224/'/>
    <child location='3.1.7.v20230428-1602/'/>
    <child location='3.1.8.v20231120-0947/'/>
    <child location='3.1.9.v20240116-1515/'/>
  </children>
</repository>

Probable Solution

Fix build procedure of the update site deployment.