test-network.sh uses a deprecated arithmetic syntax
test-network.sh uses a deprecated bash-specific syntax to do arithmetic. This fails on systems like Ubuntu and Debian that use dash instead of bash for
test-network.sh should probably use the POSIX
$((arithmetic_expr)) syntax instead.
Typical error from the log files:
/home/tlyu/src/tor/../chutney/tools/test-network.sh: 302: [: Illegal number: $[n_rounds+1] Completed $[n_rounds+1] of 1 verify rounds.