Cannot launch the given command or it terminated too quickly.

[coderXYS]

Hello ,I want try to run the examples simply use "austin ./test.py",but every time I get a "Cannot launch the given command or it terminated too quickly" error.How can I solve this problem?thanks.
My system is ubuntu 18.02 and install from sources use command "gcc -O3 -Os -Wall -pthread src/*.c -o src/austin"

[coderXYS]

Because I did not set executable permissions...