Cannot `cargo new` in the root directory.

[ehuss]

Problem
cargo new in the root directory of a posix-like system (linux or macos) will fail with:

failed to make directory '/foo/.git': No such file or directory; class=Os (2)

Notes

cargo 1.37.0-nightly (807429e 2019-06-11)

This is caused by the update to libgit2, see libgit2/libgit2#5130 for more details.

[RalfJung]

This currently blocks playground from updating to latest nightlies.

[nukeop]

I'm also experiencing this issue, reproducible with the following dockerfile:

FROM rust:latest

RUN USER=root cargo new --bin test

[shepmaster]

The workaround we did for the playground:

RUN cd / && \
    mkdir -p playground && \
    cargo init playground

[ehuss]

This was fixed a while ago, closing.