--listen-address flag doesn't work from CLI

[volkanunsal]

Expected this to work:

martin --listen_addresses="0.0.0.0:3001" postgres://postgres@localhost:5433/db

But I get this instead:

 INFO 2019-09-25T11:52:56Z: martin: Starting martin v0.2.0
 INFO 2019-09-25T11:52:56Z: martin: Connecting to postgres://postgres@localhost:5433/db
 INFO 2019-09-25T11:52:57Z: martin: Connected to postgres: postgres://postgres@localhost:5433/db
 INFO 2019-09-25T11:52:57Z: martin::table_source: public.points table found
 INFO 2019-09-25T11:52:57Z: martin: Martin has been started on 0.0.0.0:3000.
thread 'main' panicked at 'Can't bind to 0.0.0.0:3000: Os { code: 48, kind: AddrInUse, message: "Address already in use" }', libcore/result.rs:1009:5
note: Run with `RUST_BACKTRACE=1` for a backtrace.