Compilation error when using grin_wallet_libwallet as dependency

[jafalter]

Describe the bug
When adding grin_wallet_libwallet as a dependency to a Rust project like this:
`
I receive a compilation error which seems to be coming from an issue with a dalek and the grin-core dependency. The bug appears for any version of grin_wallet_libwallet above 3.0.0. (2.1.0 and below works fine)

error: aborting due to 26 previous errors

Some errors have detailed explanations: E0026, E0027, E0308, E0560, E0599, E0609, E0615.
For more information about an error, try `rustc --explain E0026`.
error: could not compile `grin_wallet_libwallet`.

To Reproduce
Steps to reproduce the behavior:

1. mkdir minimal
2. cd minimal
3. cargo init
4. Add grin_wallet_libwallet = "4.0.0" as dependency to Cargo.toml
5. cargo build

Expected behavior
Should compile without errors

Desktop (please complete the following information):

• Ubuntu 20.04
• Rust 1.47.0

Screenshots

[trevyn]

This appears to be fixed in grin_wallet_libwallet = 5.0.1.

I can reproduce the issue with Rust 1.50 and grin_wallet_libwallet = 4.0.0, but this works for me:

[dependencies]
grin_wallet_libwallet = "5.0.1"
serde = "=1.0.118"

(Note that serde = "=1.0.118" is required due to serde-rs/serde#1949. This is fixed in mimblewimble/grin#3585, but that is not yet released to crates.io.)

[quentinlesceller]

Can confirm @trevyn message. Thanks! Closing.