Sometime in the last week (with no intervening code changes), Sonar has become much slower on Travis CI.
INFO: Total time: 4:24.111s
INFO: Final Memory: 68M/792M
INFO: Total time: 27:49.333s
INFO: Final Memory: 63M/499M
Initially I assumed there had been update to Sonar or perhaps Travis, but it appears the same version of SonarQube plugin, Java, and Linux kernel are being used.
INFO: SonarQube Scanner 188.8.131.528
INFO: Java 1.8.0_151 Oracle Corporation (64-bit)
INFO: Linux 4.4.0-101-generic amd64
Any idea what the problem could be?