Fix alloc/std ambiguity

[dr-orlovsky]

No description provided.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 42.8%. Comparing base (b671b88) to head (adca3f6).
Report is 2 commits behind head on master.

Additional details and impacted files

@@          Coverage Diff           @@
##           master    #129   +/-   ##
======================================
  Coverage    42.8%   42.8%           
======================================
  Files          21      21           
  Lines        6552    6552           
======================================
  Hits         2803    2803           
  Misses       3749    3749           

Flag	Coverage Δ
rust	42.8% <ø> (ø)

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