fix(rust): fix session life cycle

[ShadowySpirits]

fix #645

[codecov-commenter]

Codecov Report

Attention: 1 lines in your changes are missing coverage. Please review.

Comparison is base (1c43ebe) 46.29% compared to head (72b8dd1) 46.27%.
Report is 18 commits behind head on master.

Files	Patch %	Lines
rust/src/session.rs	75.00%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##             master     #646      +/-   ##
============================================
- Coverage     46.29%   46.27%   -0.03%     
  Complexity      650      650              
============================================
  Files           207      207              
  Lines         11990    12095     +105     
  Branches       3405     3510     +105     
============================================
+ Hits           5551     5597      +46     
- Misses         6195     6249      +54     
- Partials        244      249       +5     

Flag	Coverage Δ
rust	79.43% <75.00%> (-1.20%)	⬇️

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