Compilation fails with `/tmp/fsio_*.sh: line 3: : command not found`, possibly because of cargo-make

[sy3c4ll]

On cargo make build,

[cargo-make] INFO - cargo make 0.37.23
[cargo-make] INFO -
[cargo-make] INFO - Build File: Makefile.toml
[cargo-make] INFO - Task: build
[cargo-make] INFO - Profile: development
[cargo-make] INFO - Running Task: build-loader
/tmp/fsio_wNaBImMbyE.sh: line 3: : command not found
Error while executing command, exit code: 127

I suspect this is an upstream (sagiegurari/cargo-make) issue, since I don't see any references to fsio here.

Sadly I cannot inspect the temporary shell script, since it is deleted right after, and I have lost all race conditions so far.

What might be the cause for this?