Resolved needs_to_handle TODO's

[SarthakSingh31]

The compiler error mentioned in the TODO doesn't occur in any version of rust that can use the 2021 edition.
Ran cargo test on the following versions without getting any errors:

• 1.56.0
• 1.56.1
• 1.57.0
• 1.58.0-beta.2 (0e07bcb68 2021-12-04)
• 1.59.0-nightly (51e8031e1 2021-12-25)

[codecov-commenter]

Codecov Report

Merging #568 (bb4b398) into main (91b7632) will decrease coverage by 0.51%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##             main     #568      +/-   ##
==========================================
- Coverage   61.15%   60.64%   -0.52%     
==========================================
  Files          85       99      +14     
  Lines       12564    12667     +103     
==========================================
- Hits         7684     7682       -2     
- Misses       4880     4985     +105     

[Furisto]

@SarthakSingh31 Thanks!