Can't compile bitvec 0.19.4 "multiple `BITS` found"

Question

I ran cargo update on my application and can now no longer compile the app. I am not really sure where to start debugging this issue since the errors are in a library that I am not familiar with.

Cargo.toml

[package]
name = "web-app"
version = "1.1.0"
authors = ["Me <my_emailg@gmail.com>"]
edition = "2018"

[dependencies]
actix = "0.10"
actix-web = { version = "3.3.2", default-features = false }
actix-rt = "1.1.1"
async-trait = "0.1.42"
lapin = { version = "1.6.6", features = ["rustls"], default-features = false }
futures = "0.3.12"
handlebars = "3.5.2"
jsonwebtoken = "7.2.0"
listenfd = "0.3.3"
log = "0.4.14"
paperclip = { version = "0.5.0", features = ["actix"] }
rand = "0.8.2"
ring = "0.16.19"
rust-argon2 = "0.8.3"
rustls = "0.19.0"
serde = { version = "1.0.121", features = ["derive"] }
serde_json = "1.0.61"
slog-scope = "4.4.0"
slog-stdlog = "4.1.0"
validator = "0.12.0"
zxcvbn = "2.1.1"
bitvec = "0.21.0"

[dev-dependencies]
fake = "2.4.0"

rustc version: 1.50.0; Ubuntu: 20.10

In the interest of brevity I have not posted the 43 errors that occurred, nor the entirety of my code base.

Answer 1

Issues have been created on the bitvec and funty repositories regarding this error.

As a temporary workaround you can force it to use version 1.1.0 of funty in your Cargo.toml

[dependencies]
funty = "=1.1.0"