Build fails on master due to bitvec -> funty dependency

[adizere]

Crate

relayer

Summary of Bug

We depend on funty via bitvec.

├── k256 v0.7.2
│   ├── cfg-if v1.0.0
│   ├── ecdsa v0.10.2
│   │   ├── elliptic-curve v0.8.4
│   │   │   ├── bitvec v0.18.4
│   │   │   │   ├── funty v1.2.0
│   │   │   │   ├── radium v0.4.1
│   │   │   │   └── wyz v0.2.0
│   │   │   ├── digest v0.9.0 (*)
│   │   │   ├── ff v0.8.0
│   │   │   │   ├── bitvec v0.18.4 (*)
│   │   │   │   ├── rand_core v0.5.1 (*)
│   │   │   │   └── subtle v2.4.0

Crate funty recently had a breaking change release, which result in breaking bitvec, thus breaking relayer also.

A complete build log can be seen here: https://github.com/informalsystems/ibc-rs/actions/runs/568080453.

@ancazamfir found the quick fix, proposed in the funty repo, to pin to the previous version of funty.

$ g diff
diff --git a/relayer/Cargo.toml b/relayer/Cargo.toml
index 3f4b05f..05854b6 100644
--- a/relayer/Cargo.toml
+++ b/relayer/Cargo.toml
@@ -51,6 +51,7 @@ dyn-clonable = "0.9.0"
 tonic = "0.4"
 dirs-next = "2.0.0"
 dyn-clone = "1.0.3"
+funty="=1.1.0"
 [dependencies.tendermint]
 version = "=0.18.0"

It would be ideal to eventually undo this quick fix.

Related -- a few other crates report the same build breaking with the new funty 1.2: ferrilab/funty#3

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