Pruning incompete on simple DUPLICATE_KEY error

Server: r2590
Persistit: r422

First noticed when testing REST POST, but happens through SQL just as easily:

test=> CREATE TABLE t(id INT NOT NULL PRIMARY KEY);
CREATE TABLE
test=> INSERT INTO t VALUES (1);
INSERT 0 1
test=> INSERT INTO t VALUES (1);
ERROR: Non-unique key for index PRIMARY: {(long)1}

And shortly thereafter, pruning warnings star to appear in the log:
2013-02-25 18:04:18,513 [PostgresServer_Session-1] INFO AISDDL - DDL in test: CREATE TABLE t(id INT NOT NULL PRIMARY KEY);
2013-02-25 18:04:24,246 [PostgresServer_Session-1] WARN PostgresServerConnection - Error in query INSERT INTO t VALUES (1);
com.akiban.server.error.DuplicateKeyException: DUPLICATE_KEY: Non-unique key for index PRIMARY: {(long)1}
 at com.akiban.server.store.PersistitStore.checkUniqueness(PersistitStore.java:1255)
 at com.akiban.server.store.PersistitStore.insertIntoIndex(PersistitStore.java:1225)
 at com.akiban.server.store.PersistitStore.insertIntoIndex(PersistitStore.java:1211)
 at com.akiban.server.store.PersistitStore.writeRowStandard(PersistitStore.java:455)
 at com.akiban.server.store.PersistitStore.writeRow(PersistitStore.java:415)
 at com.akiban.server.store.DelegatingStore.writeRow(DelegatingStore.java:94)
 at com.akiban.qp.persistitadapter.OperatorStore.writeRow(OperatorStore.java:189)
 at com.akiban.qp.persistitadapter.PersistitAdapter.writeRow(PersistitAdapter.java:157)
 at com.akiban.qp.operator.Insert_Returning$Execution.next(Insert_Returning.java:173)
 at com.akiban.qp.operator.Insert_Returning$Execution.next(Insert_Returning.java:137)
 at com.akiban.qp.operator.ChainedCursor.next(ChainedCursor.java:49)
 at com.akiban.qp.operator.ChainedCursor.next(ChainedCursor.java:32)
 at com.akiban.sql.pg.PostgresModifyOperatorStatement.execute(PostgresModifyOperatorStatement.java:167)
 at com.akiban.sql.pg.PostgresServerConnection.executeStatement(PostgresServerConnection.java:1147)
 at com.akiban.sql.pg.PostgresServerConnection.processQuery(PostgresServerConnection.java:694)
 at com.akiban.sql.pg.PostgresServerConnection.topLevel(PostgresServerConnection.java:263)
 at com.akiban.sql.pg.PostgresServerConnection.run(PostgresServerConnection.java:179)
 at java.lang.Thread.run(Thread.java:722)
2013-02-25 18:04:24,631 [CLEANUP_MANAGER] WARN TreeService - [CLEANUP_MANAGER] WARNING Transaction <ts=5,098 tc=ABORTED mvv=1> pruning incomplete at JournalAddress 1,200,882{5,098} after rollback
2013-02-25 18:04:29,637 [CLEANUP_MANAGER] WARN TreeService - [CLEANUP_MANAGER] WARNING Transaction <ts=5,098 tc=ABORTED mvv=1> pruning incomplete at JournalAddress 1,200,882{5,098} after rollback
<repeat forever>

Marking as HIGH as this will fill up the log with cruft and, more importantly, keep journal files around.