Each build will be executed by the same TeamCity config of the form:
`ABC_BUILD_NAME=<config name> ./build-configurations.sh`
ABC_BUILD_NAME will be provided at runtime.
The script was also run with ABC_BUILD_NAME not set: https://build.bitcoinabc.org/viewLog.html?buildId=16813&buildTypeId=BitcoinABC_Staging_BitcoinAbcDiffTestingMigrationWip&tab=buildLog