clippy: suppress warning requiring a newer Rust

[codecov[bot]]

Codecov Report

Merging #65 (b950aab) into master (00a108c) will decrease coverage by 12.78%. The diff coverage is 100.00%.

Additional details and impacted files

[](https://app.codecov.io/gh/mathstuf/rust-keyutils/pull/65?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Ben+Boeckel) ```diff @@ Coverage Diff @@ ## master #65 +/- ## =========================================== - Coverage 79.64% 66.87% -12.78% =========================================== Files 38 39 +1 Lines 2378 2919 +541 =========================================== + Hits 1894 1952 +58 - Misses 484 967 +483 ``` | [Impacted Files](https://app.codecov.io/gh/mathstuf/rust-keyutils/pull/65?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Ben+Boeckel) | Coverage Δ | | |---|---|---| | [src/keytypes/encrypted.rs](https://app.codecov.io/gh/mathstuf/rust-keyutils/pull/65?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Ben+Boeckel#diff-c3JjL2tleXR5cGVzL2VuY3J5cHRlZC5ycw==) | `0.00% <ø> (ø)` | | | [src/tests/utils/kernel.rs](https://app.codecov.io/gh/mathstuf/rust-keyutils/pull/65?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Ben+Boeckel#diff-c3JjL3Rlc3RzL3V0aWxzL2tlcm5lbC5ycw==) | `81.96% <100.00%> (-1.91%)` | :arrow_down: | ... and [6 files with indirect coverage changes](https://app.codecov.io/gh/mathstuf/rust-keyutils/pull/65/indirect-changes?src=pr&el=tree-more&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Ben+Boeckel) ------ [Continue to review full report in Codecov by Sentry](https://app.codecov.io/gh/mathstuf/rust-keyutils/pull/65?src=pr&el=continue&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Ben+Boeckel). > **Legend** - [Click here to learn more](https://docs.codecov.io/docs/codecov-delta?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Ben+Boeckel) > `Δ = absolute (impact)`, `ø = not affected`, `? = missing data` > Powered by [Codecov](https://app.codecov.io/gh/mathstuf/rust-keyutils/pull/65?src=pr&el=footer&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Ben+Boeckel). Last update [00a108c...b950aab](https://app.codecov.io/gh/mathstuf/rust-keyutils/pull/65?src=pr&el=lastupdated&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Ben+Boeckel). Read the [comment docs](https://docs.codecov.io/docs/pull-request-comments?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Ben+Boeckel).