Comment 52 for bug 1817395

I compiled on a fresh Ubuntu 18.04 install without an error.

sudo scons -j 4 2>&1 | tee build.log

I started mixxx, set the library folder and broadcasting settings and exited. 01run.log

./mixxx -f --developer --loglevel trace 2>&1 | tee 02run.log
...
Debug [Main]: "Mixxx" "2.3.0-alpha-pre" "(git master r6743; built on: Mar 9 2019 @ 07:20:46; flags: a$
Debug [Main]: Compile time library versions:
Debug [Main]: Qt: 5.9.5
Debug [Main]: libshout: 2.4.1
Debug [Main]: PortAudio: 1246720 PortAudio V19.6.0-devel, revision 396fe4b6699ae929d3a685b3ef8a7e97396$
Debug [Main]: RubberBand: 1.8.1
Debug [Main]: SoundTouch: 2.1.1
Debug [Main]: TagLib: 1.11.1
Debug [Main]: ChromaPrint: 1.4.3
Debug [Main]: Vorbis: Xiph.Org libVorbis 1.3.5
Debug [Main]: libsndfile: libsndfile-1.0.28
Debug [Main]: FLAC: 1.3.2
Debug [Main]: libmp3lame: 3.100
Debug [Main]: QStandardPaths::writableLocation(HomeLocation): "/home/tez"
Debug [Main]: QStandardPaths::writableLocation(DataLocation): "/home/tez/.local/share/Mixxx"
Debug [Main]: QCoreApplication::applicationDirPath() "/home/tez/mixxx"
Debug [Main]: Loading resources from "/home/tez/mixxx/res/"
...
Debug [ShoutOutput 'Connection 1']: ShoutConnection - run: Starting thread
Debug [ShoutOutput 'Connection 1']: ShoutConnection - processConnect
Debug [ShoutOutput 'Connection 1']: ShoutConnection - "Connection 1" : updating from preferences
Debug [ShoutOutput 'Connection 1']: ShoutConnection - Using server URL: QUrl("//192.168.1.50:8000")
Debug [ShoutOutput 'Connection 1']: CBR mode with bitrate: 128
Debug [ShoutOutput 'Connection 1']: ShoutConnection - Connection pending. Waiting...
Debug [ShoutOutput 'Connection 1']: ShoutConnection - Connection pending. Waiting...
Debug [ShoutOutput 'Connection 1']: ShoutConnection - Connection pending. Waiting...
Debug [ShoutOutput 'Connection 1']: ShoutConnection - ***********Connected to streaming server...
Debug [ShoutOutput 'Connection 1']: ShoutConnection - processConnect() returning true
Debug [Main]: keyboard press: "D"
Debug [Main]: Committing transaction on "MIXXX-1" result: true
Warning [ShoutOutput 'Connection 1']: ShoutConnection - shout_set_metadata fails with error code -1 1
...

The connection was succesful.
No metadata was sent to Shoutcast.

I had another look at thehttps://bugs.launchpad.net/mixxx/+bug/1817395/+attachment/5241090/+files/mixxx.log source code ~/mixxx/src/engine/sidechain/shoutconnection.cpp

Line 846 reads:
                kLogger.warning() << "shout_set_metadata fails with error code" << ret << shout_get_tls(m_pShout);

I suspect a bad variable between lines 790 and 846.

Can you please check the variables between lines 790 and 846 in shoutconnection.cpp?