bugfix: compilation with no default features

[akorchyn]

Resolves: #1

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[race-of-sloths]

@akorchyn Thank you for your contribution! Your pull request is now a part of the Race of Sloths!

Current status: executed

Reviewer	Score
@frol	5

Your contribution is much appreciated with a final score of 5!
You have received 69 (50 base + 15 weekly bonus + 5% lifetime bonus) Sloth points for this contribution

Another weekly streak completed, well done @akorchyn! To keep your weekly streak and get another bonus make pull request next week! Looking forward to see you in race-of-sloths

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[race-of-sloths]

🥁 Score it!

@akorchyn, please ask your peers to score the PR using @race-of-sloths score [1/2/3/5/8/13].
If no scoring is provided within 24 hours, this PR will be scored as 1 🦥

[frol]

@race-of-sloths score 5