Exception while driving - "set trap funnel on top of terrain downspout which already has a built-in trap"

[jkraybill]

Describe the bug

Was driving through a densely-populated city. Hit a couple zeds with my vehicle, and got this crash. I was not doing anything abnormal, and had not been in this city before. I don't have a theory as to why this occurred.

I did get a "you hear crash!" message at the end of the turn this occurred, not sure if it's related.

Steps To Reproduce

Not sure.

Expected behavior

No crash.

Screenshots

Here's my messages log, after the end of the turn in which this occurred.

Here's the exception.

Debug log below.

Versions and configuration

• OS: Windows
  • OS Version: 10.0 1903
• Game Version: 0.D-12681-ga92612b [64-bit]
• Graphics Version: Tiles
• Mods loaded: [
  Dark Days Ahead [dda],
  Disable NPC Needs [no_npc_food],
  Beta National Guard Camp [national_guard_camp],
  More Locations [more_locations],
  Fuji's More Buildings [FujiStruct],
  More City Locations [cityside],
  Urban Development [Urban_Development],
  No Fungal Monsters [No_Fungi]
  ]

Additional context

debug.log

[wapcaplet]

Observed as well in 0.E-9806-g10ba62cb47, immediately after starting a new game and spawning in an Evac shelter. Cause still unknown.

[actual-nh]

You would appear to have confirmed it?