[postgis-tickets] [PostGIS] #4571: PostGIS upgrade tests trying to downgrade

[PostGIS]

#4571: PostGIS upgrade tests trying to downgrade
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 Reporter:  robe                   |      Owner:  strk
     Type:  defect                 |     Status:  new
 Priority:  blocker                |  Milestone:  PostGIS 3.0.1
Component:  build/upgrade/install  |    Version:  3.0.x
 Keywords:                         |
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 I think there is something wrong with our postgres upgrade regress tests
 in that it's trying future versions to downgrade.

 Debbie is failing on PostGIS 3.0 upgrade test with:
 https://debbie.postgis.net/job/PostGIS_Regress/13498/consoleFull

 {{{
 15:05:26 PostgreSQL 12.0 on x86_64-pc-linux-gnu, compiled by gcc (Debian
 9.2.1-9) 9.2.1 20191008, 64-bit
 15:05:26   Postgis 3.0.1dev - r17988 - 2019-11-06 20:01:22
 15:05:26   scripts 3.0.1dev r17988
 15:05:26   GEOS: 3.9.0dev-CAPI-1.14.0
 15:05:26   PROJ: 6.2.0
 15:05:26
 15:05:26 Running tests
 15:05:26

 15:22:17
 psql:/var/lib/jenkins/workspace/pg/rel/pg12w64/share/postgresql/contrib/postgis-3.1/postgis.sql:2793:
 ERROR:  could not find function "postgis_lib_revision" in file
 "/var/lib/jenkins/workspace/pg/rel/pg12w64/lib/postgresql/postgis-3.so"
 }}}


 15:22:17 make: Leaving directory
 '/var/lib/jenkins/workspace/postgis/branches/3.0/raster/test/regress'
 15:22:17 FAIL: upgrade unpackaged3.1--3.0.1dev

 Why are future versions of PostGIS even in past test runs?

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Ticket URL: <https://trac.osgeo.org/postgis/ticket/4571>
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