Detect insufficient state early

[dr-orlovsky]

Improves testing verbosity in RGB-WG/rgb-tests#26

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 8 lines in your changes missing coverage. Please review.

Project coverage is 2.8%. Comparing base (55a814a) to head (b4f54bf).
Report is 2 commits behind head on master.

Files with missing lines	Patch %	Lines
src/pay.rs	0.0%	8 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##           master   #269     +/-   ##
=======================================
- Coverage     2.8%   2.8%   -0.0%     
=======================================
  Files          15     15             
  Lines        1914   1920      +6     
=======================================
  Hits           53     53             
- Misses       1861   1867      +6     

Flag	Coverage Δ
rust	2.8% <0.0%> (-<0.1%)	⬇️

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[zoedberg]

ACK