chore: pop_address should use crate scope

[rakita]

closes #1401

[github-actions]

Valgrind Results:

==4131== Cachegrind, a cache and branch-prediction profiler
==4131== Copyright (C) 2002-2017, and GNU GPL'd, by Nicholas Nethercote et al.
==4131== Using Valgrind-3.18.1 and LibVEX; rerun with -h for copyright info
==4131== Command: target/release/snailtracer
==4131== 
--4131-- warning: L3 cache found, using its data for the LL simulation.
Running snailtracer example!
elapsed: 1.829999968s
==4131== 
==4131== I   refs:      429,372,260
==4131== I1  misses:          3,199
==4131== LLi misses:          2,812
==4131== I1  miss rate:        0.00%
==4131== LLi miss rate:        0.00%
==4131== 
==4131== D   refs:      206,205,215  (133,650,791 rd   + 72,554,424 wr)
==4131== D1  misses:        321,926  (    182,218 rd   +    139,708 wr)
==4131== LLd misses:        137,712  (      4,339 rd   +    133,373 wr)
==4131== D1  miss rate:         0.2% (        0.1%     +        0.2%  )
==4131== LLd miss rate:         0.1% (        0.0%     +        0.2%  )
==4131== 
==4131== LL refs:           325,125  (    185,417 rd   +    139,708 wr)
==4131== LL misses:         140,524  (      7,151 rd   +    133,373 wr)
==4131== LL miss rate:          0.0% (        0.0%     +        0.2%  )