Crashing when withdrawing funds

[CryptoCloaks]

Issue and Steps to Reproduce

Hello, currently I am having an issue with withdrawing funds from my C-Lightning wallet on my BTCPAY Server. Whenever I run the command "withdraw BTC ADDRESS all" the C-Lightning crashes.

At first I thought it was just Spark as it would completely shutdown spark and would have to restart the entire server for it to come back up, but even trying it in command line for c-lightning, I still am unable to pull the funds out.

• All channels have closed, I've been watching all the blocks to clear over the past week.

Crash Log

Here is the crash log from C-Lightning after trying to withdraw.
crash.log

getinfo output

$ getinfo
id: 03e81a5b8af31bc00a1c1c08419d3272b4982db02feafd739904df2edfcbdf6f7e
alias: CryptoCloaksBTCPAY
color: 03e81a
num_peers: 4
num_pending_channels: 1
num_active_channels: 2
num_inactive_channels: 1
address:

• type: ipv4
  address: 68.169.217.236
  port: 9735
• type: torv3
  address: 624wyjnjzznfju4wom2ucdpc2azpfy3iardtyklzw7ll4o5nleunfwyd.onion
  port: 9735
  binding:
• type: ipv4
  address: 0.0.0.0
  port: 9735
  version: basedon-v0.7.0-3
  blockheight: 581672
  network: bitcoin
  msatoshi_fees_collected: 38851
  fees_collected_msat: 38851msat

@NicolasDorier

[rustyrussell]

I hate how we never get complete backtraces from docker :( It seems to kill the process during it.

Is this because it prints the crash to stderr and something kills us for doing that @NicolasDorier ?

[NicolasDorier]

I definitively remember having full backtraces at one point.
Will check around, maybe related to the tini utility.

[NicolasDorier]

@rustyrussell it seems to me that tini is properly waiting for the child to be closed.

https://github.com/krallin/tini/blob/master/src/tini.c

We invoke tini with -g.

[NicolasDorier]

@CryptoCloaks how do you get those logs?
Did you do docker logs btcpayserver_clightning_bitcoin ? Or are you giving some files generated by clightning?

[CryptoCloaks]

LIAB helped me get it this way,

• copied it out of the Docker folder and downloaded it using WinSCP

[NicolasDorier]

do you get something more interesting when you try docker logs btcpayserver_clightning_bitcoin ?

[CryptoCloaks]

Here's the docker log.

Docker Log.txt

[NicolasDorier]

that's interesting, you have an already spent output.

[NicolasDorier]

This is the conflicting transaction https://blockstream.info/tx/b6a1ff257f881fba61aff528fb893198df5088e55470a6c1528f912835b926f7 (which do the same thing with 2 satoshi of difference)

[NicolasDorier]

@CryptoCloaks did you tried to crash your c-lightning instance by withdrawing before checking the docker log?

[CryptoCloaks]

Alright, this should have it!

Docker Logs Withdraw.txt