phase `patch-cargo-checksums' succeeded after 1.7 seconds
starting phase `build'
error: failed to load source for a dependency on `clap`

Caused by:
  Unable to update registry `https://github.com/rust-lang/crates.io-index`

Caused by:
  failed to update replaced source registry `https://github.com/rust-lang/crates.io-index`

Caused by:
  found a virtual manifest at `/tmp/guix-build-alacritty-0.4.0.drv-0/alacritty-0.4.0/guix-vendor/v0.4.0.tar.gz/Cargo.toml` instead of a package manifest
command "cargo" "build" "--release" failed with status 101
builder for `/gnu/store/nw19czv6vqkvr8war1xz8as1v2g9c6ar-alacritty-0.4.0.drv' failed with exit code 1
build of /gnu/store/nw19czv6vqkvr8war1xz8as1v2g9c6ar-alacritty-0.4.0.drv failed
View build log at '/var/log/guix/drvs/nw/19czv6vqkvr8war1xz8as1v2g9c6ar-alacritty-0.4.0.drv.bz2'.
guix build: error: build of `/gnu/store/nw19czv6vqkvr8war1xz8as1v2g9c6ar-alacritty-0.4.0.drv' failed