debbie's crashing on 3.0 subdivide

[robe]

I thought this was specific to her, but strk is complaining of crashers as well.

 subdivide .. failed (diff expected obtained: /var/lib/jenkins/workspace/postgis/tmp/3_0_pg11w64/test_115_diff)
-----------------------------------------------------------------------------
--- subdivide_expected	2019-01-23 17:21:20.654097315 +0000
+++ /var/lib/jenkins/workspace/postgis/tmp/3_0_pg11w64/test_115_out	2019-03-19 05:38:01.511693446 +0000
@@ -4,7 +4,7 @@
 ERROR:  lwgeom_subdivide: cannot subdivide to fewer than 5 vertices per output
 #3522|POINT(1 1)
 #3744|1600000000000000
-4|29321996468.6|29321996468.6|1857|256
-#4211|0.00008316000
-#4217|0.00002463668
-#4301|0.00213614552
+server closed the connection unexpectedly
+	This probably means the server terminated abnormally
+	before or while processing the request.
+connection to server was lost
-----------------------------------------------------------------------------
 voronoi .. failed (diff expected obtained: /var/lib/jenkins/workspace/postgis/tmp/3_0_pg11w64/test_116_diff)
-----------------------------------------------------------------------------
--- voronoi_expected	2018-10-19 23:06:41.137379569 +0000
+++ /var/lib/jenkins/workspace/postgis/tmp/3_0_pg11w64/test_116_out	2019-03-19 05:38:01.571693730 +0000
@@ -1,7 +1 @@
-1|t
-2|t
-ERROR:  Tolerance must be a positive number.
-ERROR:  Tolerance must be a positive number.
-6|t
-7|t
-8|t
+psql: FATAL:  the database system is in recovery mode
-----------------------------------------------------------------------------
 regress_brin_index .. failed (diff expected obtained: /var/lib/jenkins/workspace/postgis/tmp/3_0_pg11w64/test_117_diff)
-----------------------------------------------------------------------------
--- regress_brin_index_expected	2018-10-19 23:06:41.065380052 +0000
+++ /var/lib/jenkins/workspace/postgis/tmp/3_0_pg11w64/test_117_out	2019-03-19 05:38:01.619693956 +0000
@@ -1,61 +1 @@

I see a bunch of other crashers in brin, mvt_jsonb, but they may be just because debbie hadn't fully recovered from subdivide crash

​https://debbie.postgis.net/job/PostGIS_Regress/11573/consoleFull

[komzpa]

Can you make logbt a part of debbie's build process similar to what we have on Travis, so that such reports pinpoint a crasher in logs?

[robe]

Okay I'll try in a bit.

[robe]

I should note her 12 version doesn't seem to crash.

[robe]

oops didn't mention references in my commit.

Committed logic for debbie to run logbt at r17349

[robe]

In 17350:

don't bother testing non-logbt if logbt is chosen (would be largely redundant? )
References #4354

[robe]

okay she's refusing to crash now. Maybe it was just gas. But logbt testing should be in place now for future crashes.