debbie failing on regress PostGIS 2.4 +WARNING: 'postgis.backend' is already set and cannot be changed

[robe]

Now that have cunit issues cleared out of the way, sadly debbie is still unhappy with 2.4. Now it's failing at regress - but looks to be the upgrade regress - earlier passed fine

 -------------- Dependencies -------------- 
20:52:23   GEOS config:          /var/lib/jenkins/workspace/geos/rel-3.7w64/bin/geos-config
20:52:23   GEOS version:         3.7.4dev
20:52:23   GDAL config:          /var/lib/jenkins/workspace/gdal/rel-2.4w64/bin/gdal-config
20:52:23   GDAL version:         2.4.4
20:52:23   SFCGAL config:        /usr/bin/sfcgal-config
20:52:23   SFCGAL version:       1.3.8
20:52:23   PostgreSQL config:    /var/lib/jenkins/workspace/pg/rel/pg10w64/bin/pg_config
20:52:23   PostgreSQL version:   PostgreSQL 10.18
20:52:23   PROJ4 version:        72
20:52:23   Libxml2 config:       /usr/bin/xml2-config
20:52:23   Libxml2 version:      2.9.12
20:52:23   JSON-C support:       yes
20:52:23   protobuf-c support:   yes
20:52:23   protobuf-c version:   1003003
20:52:23   PCRE support:         no
20:52:23   Perl:                 /usr/bin/perl
20:52:23 
20:52:23  --------------- Extensions --------------- 
20:52:23   PostGIS Raster:       enabled
20:52:23   PostGIS Topology:     enabled
20:52:23   SFCGAL support:       enabled
20:52:23   Address Standardizer support:       disabled
20:52:23 
20:52:23  -------- Documentation Generation -------- 
20:52:23   xsltproc:             /usr/bin/xsltproc
20:52:23   xsl style sheets:     /usr/share/xml/docbook/stylesheet/docbook-xsl
20:52:23   dblatex:              /usr/bin/dblatex
20:52:23   convert:              /usr/bin/convert
20:52:23   mathml2.dtd:          /usr/share/xml/schema/w3c/mathml/dtd/mathml2.dtd

21:10:59  legacy .. failed (diff expected obtained: /var/lib/jenkins/workspace/postgis/tmp/2_4_pg10w64/test_47_diff)
21:10:59 -----------------------------------------------------------------------------
21:10:59 --- legacy_expected	2019-10-31 14:10:38.264865818 +0000
21:10:59 +++ /var/lib/jenkins/workspace/postgis/tmp/2_4_pg10w64/test_47_out	2021-08-16 01:10:59.874336674 +0000
21:10:59 @@ -1,3 +1,4 @@
21:10:59 +WARNING:  'postgis.backend' is already set and cannot be changed until you reconnect at character 192
21:10:59  Starting up MapServer/Geoserver tests...
21:10:59  Setting up the data table...
21:10:59  public.wmstest.pt SRID:4326 TYPE:POLYGON DIMS:2 
21:10:59 -----------------------------------------------------------------------------


21:11:57  sfcgal/legacy .. failed (diff expected obtained: /var/lib/jenkins/workspace/postgis/tmp/2_4_pg10w64/test_127_diff)
21:11:58 -----------------------------------------------------------------------------
21:11:58 --- sfcgal/legacy_expected	2019-10-31 14:10:38.364864952 +0000
21:11:58 +++ /var/lib/jenkins/workspace/postgis/tmp/2_4_pg10w64/test_127_out	2021-08-16 01:11:58.756509908 +0000
21:11:58 @@ -1,3 +1,4 @@
21:11:58 +WARNING:  'postgis.backend' is already set and cannot be changed until you reconnect at character 192
21:11:58  Starting up MapServer/Geoserver tests...
21:11:58  Setting up the data table...
21:11:58  public.wmstest.pt SRID:4326 TYPE:POLYGON DIMS:2 
21:11:58 -----------------------------------------------------------------------------

maybe it's just an intermittent that will go away if I retest. Although her 2.4 has been broken for a while because of the cunit issue so it might have been something else introduced in PostGIS or PostgreSQL proper

[Regina Obe <lr@…>]

In 4b1d5ff/git:

Try to fix debbie's complaining about warning backend change. Closes #4972 for PostGIS 2.4.10

[Regina Obe <lr@…>]

In 58434ed/git:

Put in legacy file - hopefully closes #4972