dooku-~ mcr 10001 %cargo install filedescriptor
Updating crates.io index
Downloaded filedescriptor v0.8.0
error: failed to parse manifest at /home/mcr/.cargo/registry/src/github.com-1ecc6299db9ec823/filedescriptor-0.8.0/Cargo.toml

I expected to get installed. (I came across this after an cargo update on another project)

Steps

1. install cargo 1.50.0
2. try to install this version of filedescriptor (which I think is the latest)

Possible Solution(s)
Upgrade to cargo 1.53.0

Notes

The comment at the top of that file says:

# If you believe there's an error in this file please file an
# issue against the rust-lang/cargo repository. If you're
# editing this file be aware that the upstream Cargo.toml
# will likely look very different (and much more reasonable)

I think that the goal of the rewriting is to keep people from being forced to upgrade.