build(deps): Bump rand to 0.8 and quickcheck to 1

[kpp]

Fixes #2847
Fixes #2732

It would be nice if you can help me with or at least give an advise:

• Some tests fail
• I didn't implement my own gen_range but used modulus instead
• There is a lot of leaky abstractions of rand in kad

[thomaseizinger]

Thank you! This is something that has been overdue for a while!

[kpp]

Ready for review! @thomaseizinger thank you for helping me with this.

[thomaseizinger]

Thank you for pushing this forward!

[kpp]

So I added an implementation of gen_range, however it is too generic and <T> sometimes is treated as integer which is then substituted as i32, so I have to fix T with something like:

-            match g.gen_range(0..5) {
+            match g.gen_range(0..5u8) {
                 0 => Message::Header(HeaderLine::V1),
                 1 => Message::NotAvailable,
                 2 => Message::ListProtocols,

I added a T: Unsigned bound to catch this kind of errors at compile time.

[kpp]

Also this is a very strange failed test https://github.com/libp2p/rust-libp2p/runs/8207467155?check_suite_focus=true, issued in #2874.

[thomaseizinger]

LGTM!

@mxinden Can you have a look at this too?

[thomaseizinger]

Excuse the bad merge commit, I've fixed the build error in 25f87c5.

[mxinden]

Solid work. Thanks @kpp for solving this long standing issue in such a clean way.

[kpp]

@mxinden I bumped the versions of crates and added CHANGELOG entries. pnet changelog should reflect the date of publishing.

[mxinden]

Thanks for the follow ups. Still a couple of comments. Keeping the libp2p-kad tests deterministic would ease debugging in the future by a lot.

[kpp]

@mxinden I made kad tests deterministic.

[thomaseizinger]

LGTM!

[thomaseizinger]

This is good to merge from my side. Thank you @kpp!

I think the only open point is #2857 (comment), plus there is now a merge conflict with master.

[thomaseizinger]

All comments are resolved and tests are passing. Going ahead with merging this. Interoperability tests fail because of libp2p/test-plans#41.