Greg Leonard

The hint for `traits5` implies the solution should involve specifying multiple trait bounds: ``` ❯ rustlings hint traits5 To ensure a paramter implements multiple traits use the '+ syntax'. Try...

[crypto](https://crates.io/crates/crypto) has [no maintainers](https://rustsec.org/advisories/RUSTSEC-2016-0005.html), [sha2](https://crates.io/crates/sha2) is a good modern alternative to switch to.

The `SelfDescribingJson` type in [core](https://github.com/snowplow/snowplow-javascript-tracker/blob/master/libraries/tracker-core/src/core.ts#L48) takes a type parameter, but will not accept a type with optional properties: ```typescript type Foo = { bar: string; baz?: string; }; const sdj:...

Currently `id` is required to be a string, meaning the function (either `enableYouTubeTracking` or `enableMediaTracking` has to be called multiple times for as many videos. Allowing `id` to accept either...