Briar fails to start on the Sony Xperia Tipo (Android 4.0.4) because H2 crashes with the following stacktrace:

06-30 09:51:48.069 2888-3099/org.briarproject.briar E/ACRA: ACRA caught a NoClassDefFoundError for org.briarproject.briar
java.lang.NoClassDefFoundError: java.util.concurrent.ThreadLocalRandom
    at org.h2.util.MathUtils.randomBytes(MathUtils.java:290)
    at org.h2.engine.User.setUserPasswordHash(User.java:71)
    at org.h2.engine.Engine.openSession(Engine.java:72)
    at org.h2.engine.Engine.openSession(Engine.java:176)
    at org.h2.engine.Engine.createSessionAndValidate(Engine.java:154)
    at org.h2.engine.Engine.createSession(Engine.java:137)
    at org.h2.engine.Engine.createSession(Engine.java:27)
    at org.h2.engine.SessionRemote.connectEmbeddedOrServer(SessionRemote.java:354)
    at org.h2.jdbc.JdbcConnection.<init>(JdbcConnection.java:116)
    at org.h2.jdbc.JdbcConnection.<init>(JdbcConnection.java:100)
    at org.h2.Driver.connect(Driver.java:69)
    at java.sql.DriverManager.getConnection(DriverManager.java:175)
    at org.briarproject.bramble.db.H2Database.createConnection(H2Database.java:93)
    at org.briarproject.bramble.db.JdbcDatabase.startTransaction(JdbcDatabase.java:364)
    at org.briarproject.bramble.db.JdbcDatabase.open(JdbcDatabase.java:271)
    at org.briarproject.bramble.db.H2Database.open(H2Database.java:46)
    at org.briarproject.bramble.db.DatabaseComponentImpl.open(DatabaseComponentImpl.java:117)
    at org.briarproject.bramble.lifecycle.LifecycleManagerImpl.startServices(LifecycleManagerImpl.java:122)
    at org.briarproject.briar.android.BriarService$1.run(BriarService.java:98)

It looks like the recent H2 upgrade has introduce a dependency on a newer version of Java.