p2 repository at eclipse.org contains outdated mirrors

Summary

Some of the mirrors that are listed for the 2024-09 release don't contain the expected artifacts.

Steps to reproduce

The result from https://www.eclipse.org/downloads/download.php?format=xml&file=/releases/2024-09/202409111000 :

<mirrors>
        <mirror url="https://ftp.fau.de/eclipse" label="[Germany] University of Erlangen-Nuremberg (https)" />
        <mirror url="https://mirror.dkm.cz/eclipse" label="[Czech Republic] UPC Ceska republika, a.s. (https)" />
        <mirror url="https://ftp.linux.org.tr/eclipse/" label="[Turkey] Linux Kullanicilari Dernegi (https)" />
        <mirror url="https://ftp.halifax.rwth-aachen.de/eclipse" label="[Germany] RWTH Aachen University (https)" />
        <mirror url="https://mirrors.dotsrc.org/eclipse/" label="[Denmark] dotsrc.org (https)" />
        <mirror url="https://mirror.ibcp.fr/pub/eclipse" label="[France] CNRS IBCP (https)" />
        <mirror url="https://eclipse.mirror.garr.it" label="[Italy] Consortium GARR (https)" />
        <mirror url="https://mirror.accum.se/mirror/eclipse.org/" label="[Sweden] Academic Computer Club in Umeå, Sweden (https)" />
        <mirror url="https://ftp.snt.utwente.nl/pub/software/eclipse" label="[Netherlands] SNT, University of Twente (https)" />
        <mirror url="https://eclipse.mirror.liteserver.nl" label="[Netherlands] LiteServer (https)" />
        <mirror url="https://mirror.tspu.ru/eclipse" label="[Russian Federation] Tomsk State Pedagogical University (https)" />
        <mirror url="https://mirrors.jevincanders.net/eclipse" label="[United States] Jevin Canders (https)" />
        <mirror url="https://eclipse.mirror.rafal.ca" label="[Canada] Rafal Rzeczkowski (https)" />
        <mirror url="https://mirror.csclub.uwaterloo.ca/eclipse" label="[Canada] University of Waterloo Computer Science Club (https)" />
        <mirror url="https://mirror.umd.edu/eclipse" label="[United States] University of Maryland (https)" />
        <mirror url="https://ca.mirrors.cicku.me/eclipse/" label="[Canada] CICKU (https)" />
        <mirror url="https://ftp2.osuosl.org/pub/eclipse" label="[United States] OSU Open Source Lab (https)" />
        <mirror url="https://mirrors.xmission.com/eclipse" label="[United States] XMission Internet (https)" />
        <mirror url="https://mirror.clarkson.edu/eclipse" label="[United States] Clarkson University Open Source Institute (https)" />
        <mirror url="https://mirror.kakao.com/eclipse" label="[Korea, Republic Of] Kakao Corp. (https)" />
        <mirror url="https://mirror.library.ucy.ac.cy/eclipse" label="[Cyprus] University of Cyprus, Library (https)" />
        <mirror url="https://ftp.yz.yamagata-u.ac.jp/pub/eclipse" label="[Japan] Yamagata University (https)" />
        <mirror url="https://ftp.yz.yamagata-u.ac.jp/pub/eclipse/" label="[Japan] Yamagata University (https)" />
        <mirror url="https://ftp.jaist.ac.jp/pub/eclipse" label="[Japan] Japan Advanced Institute of Science and Technology (https)" />
        <mirror url="https://www.ftp.saix.net/Eclipse/" label="[South Africa] Openserve (https)" />
        <mirror url="https://www.ftp.saix.net/Eclipse/" label="[South Africa] Telkom SAIX (https)" />
        <mirror url="https://mirror.aarnet.edu.au/pub/eclipse" label="[Australia] Australian Academic Research Network (https)" />
        <mirror url="https://eclipse.c3sl.ufpr.br" label="[Brazil] C3SL - Federal University of Parana (https)" />
</mirrors>

But accessing the following mirror results in a 404: https://mirrors.jevincanders.net/eclipse/releases/2024-09/202409111000

Accessing the URL via the browser reveals that it only contains the artifact up until last month.

Priority

• Urgent
• High
• Medium
• Low

Severity

• Blocker
• Major
• Normal
• Low

Impact

It's very hard to get reliable nightly builds, as the jobs frequently fail due to missing dependencies.