sheldon: error while loading shared libraries: libgit2.so.1.1: cannot open shared object file: No such file or directory

failures:

---- lock::tests::external_plugin_lock_git_with_uses stdout ----
thread 'lock::tests::external_plugin_lock_git_with_uses' panicked at 'called `Result::unwrap()` on an `Err` value: failed to git clone `https://github.com/rossmacarthur/sheldon-test`

Caused by:
    invalid version 0 on git_proxy_options; class=Invalid (3)', src/lock.rs:1181:62

---- lock::tests::external_plugin_lock_git_with_matches_error stdout ----
thread 'lock::tests::external_plugin_lock_git_with_matches_error' panicked at 'called `Result::unwrap()` on an `Err` value: failed to git clone `https://github.com/rossmacarthur/sheldon-test`

Caused by:
    invalid version 0 on git_proxy_options; class=Invalid (3)', src/lock.rs:1255:62
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

---- lock::tests::external_plugin_lock_git_with_matches_not_each stdout ----
thread 'lock::tests::external_plugin_lock_git_with_matches_not_each' panicked at 'called `Result::unwrap()` on an `Err` value: failed to git clone `https://github.com/rossmacarthur/sheldon-test`

Caused by:
    invalid version 0 on git_proxy_options; class=Invalid (3)', src/lock.rs:1283:62

---- lock::tests::external_plugin_lock_git_with_matches stdout ----
thread 'lock::tests::external_plugin_lock_git_with_matches' panicked at 'called `Result::unwrap()` on an `Err` value: failed to git clone `https://github.com/rossmacarthur/sheldon-test`

Caused by:
    invalid version 0 on git_proxy_options; class=Invalid (3)', src/lock.rs:1221:62

---- lock::tests::source_lock_git_git_with_checkout stdout ----
thread 'lock::tests::source_lock_git_git_with_checkout' panicked at 'called `Result::unwrap()` on an `Err` value: failed to git clone `git://github.com/rossmacarthur/sheldon-test`

Caused by:
    invalid version 0 on git_proxy_options; class=Invalid (3)', src/lock.rs:1068:10

---- lock::tests::source_lock_git_and_reinstall stdout ----
thread 'lock::tests::source_lock_git_and_reinstall' panicked at 'called `Result::unwrap()` on an `Err` value: failed to git clone `https://github.com/rossmacarthur/sheldon-test`

Caused by:
    invalid version 0 on git_proxy_options; class=Invalid (3)', src/lock.rs:1009:89

---- lock::tests::locked_config_clean stdout ----
thread 'lock::tests::locked_config_clean' panicked at 'assertion failed: ctx.clone_dir().join(\"github.com/rossmacarthur/sheldon-test\").exists()', src/lock.rs:1397:9

---- lock::tests::source_lock_git_https_with_checkout stdout ----
thread 'lock::tests::source_lock_git_https_with_checkout' panicked at 'called `Result::unwrap()` on an `Err` value: failed to git clone `https://github.com/rossmacarthur/sheldon-test`

Caused by:
    invalid version 0 on git_proxy_options; class=Invalid (3)', src/lock.rs:1045:10

---- lock::tests::source_lock_with_git stdout ----
thread 'lock::tests::source_lock_with_git' panicked at 'called `Result::unwrap()` on an `Err` value: failed to git clone `https://github.com/rossmacarthur/sheldon-test`

Caused by:
    invalid version 0 on git_proxy_options; class=Invalid (3)', src/lock.rs:1135:40


failures:
    lock::tests::external_plugin_lock_git_with_matches
    lock::tests::external_plugin_lock_git_with_matches_error
    lock::tests::external_plugin_lock_git_with_matches_not_each
    lock::tests::external_plugin_lock_git_with_uses
    lock::tests::locked_config_clean
    lock::tests::source_lock_git_and_reinstall
    lock::tests::source_lock_git_git_with_checkout
    lock::tests::source_lock_git_https_with_checkout
    lock::tests::source_lock_with_git