P2 corrupted index metadata

[nedtwigg]

from diffplug/spotless#2331 (comment)

Caused by: java.lang.RuntimeException: java.io.EOFException
	at dev.equo.solstice.Unchecked.wrap(Unchecked.java:47)
	at dev.equo.solstice.SerializableMisc.fromFile(SerializableMisc.java:50)
	at dev.equo.solstice.p2.QueryCacheOnDisk.get(QueryCacheOnDisk.java:46)
	at dev.equo.solstice.p2.P2Model.query(P2Model.java:130)
	at com.diffplug.spotless.extra.EquoBasedStepBuilder.lambda$build$0(EquoBasedStepBuilder.java:128)
	... 93 more
Caused by: java.io.EOFException
	at java.base/java.io.ObjectInputStream$PeekInputStream.readFully(ObjectInputStream.java:2933)
	at java.base/java.io.ObjectInputStream$BlockDataInputStream.readShort(ObjectInputStream.java:3428)
	at java.base/java.io.ObjectInputStream.readStreamHeader(ObjectInputStream.java:985)
	at java.base/java.io.ObjectInputStream.<init>(ObjectInputStream.java:416)
	at dev.equo.solstice.SerializableMisc.fromFile(SerializableMisc.java:42)
	... 96 more