Sandbox executable not found when installed from Git via Cargo

[cairomassimo]

Install as follows:

cargo install task-maker-rust --git https://github.com/edomora97/task-maker-rust.git

then run task-maker in a task directory.

Worker threads panic with a NotFound error, probably related to tmbox not found in PATH, and print error messages on console. The process hangs.

[edomora97]

Fixed with 3c6e73f

Please note that only the hanging bit has been fixed: for sure task-maker should never hang, but it's your duty to install it correctly.
Unfortunately cargo is not yet able to install build artefacts (rust-lang/cargo#2729), so cargo install is not able to bring tmbox in the $PATH.