[#1569] fix(rust): flaky test for test_ticket_manager

[zuston]

What changes were proposed in this pull request?

Use i64 to fix overflow rather than u64

Why are the changes needed?

Fix: #1569. to fix test_ticket_manager

Does this PR introduce any user-facing change?

No.

How was this patch tested?

Existing uts

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 54.65%. Comparing base (d994b27) to head (df08df4).
Report is 264 commits behind head on master.

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #1570      +/-   ##
============================================
+ Coverage     53.72%   54.65%   +0.93%     
- Complexity     2838     2839       +1     
============================================
  Files           437      417      -20     
  Lines         24663    22302    -2361     
  Branches       2094     2094              
============================================
- Hits          13250    12189    -1061     
+ Misses        10581     9353    -1228     
+ Partials        832      760      -72     

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[github-actions]

Test Results

 2 326 files  ±0  2 326 suites  ±0   4h 29m 43s ⏱️ +17s
   851 tests ±0    849 ✅ ±0   2 💤 ±0  0 ❌ ±0 
10 018 runs  ±0  9 995 ✅ ±0  23 💤 ±0  0 ❌ ±0 

Results for commit df08df4. ± Comparison against base commit d994b27.

[smallzhongfeng]

Thanks @zuston Merged.