if err != nil {
		err = msgp.WrapError(err, "ActualSize")
		return
	}
	// write "ModTime"
	err = en.Append(0xa7, 0x4d, 0x6f, 0x64, 0x54, 0x69, 0x6d, 0x65)
	if err != nil {
		return
	}
	err = en.WriteTime(z.ModTime)
	if err != nil {
		err = msgp.WrapError(err, "ModTime")
		return
	}
	if (zb0001Mask & 0x20) == 0 { // if not omitted
		// write "index"
		err = en.Append(0xa5, 0x69, 0x6e, 0x64, 0x65, 0x78)

	if err != nil {
		return
	}
	if z.CreatedBefore == nil {
		err = en.WriteNil()
		if err != nil {
			return
		}
	} else {
		err = en.WriteTime(*z.CreatedBefore)
		if err != nil {
			err = msgp.WrapError(err, "CreatedBefore")
			return
		}
	}
	// write "Tags"
	err = en.Append(0xa4, 0x54, 0x61, 0x67, 0x73)
	if err != nil {
		return
	}

		err = msgp.WrapError(err, "TotalDowntime")
		return
	}
	// write "LastOnline"
	err = en.Append(0xaa, 0x4c, 0x61, 0x73, 0x74, 0x4f, 0x6e, 0x6c, 0x69, 0x6e, 0x65)
	if err != nil {
		return
	}
	err = en.WriteTime(z.LastOnline)
	if err != nil {
		err = msgp.WrapError(err, "LastOnline")
		return
	}
	// write "Online"
	err = en.Append(0xa6, 0x4f, 0x6e, 0x6c, 0x69, 0x6e, 0x65)
	if err != nil {
		return
	}

			return
		}
	}
	// write "Timestamp"
	err = en.Append(0xa9, 0x54, 0x69, 0x6d, 0x65, 0x73, 0x74, 0x61, 0x6d, 0x70)
	if err != nil {
		return
	}
	err = en.WriteTime(z.Timestamp)
	if err != nil {
		err = msgp.WrapError(err, "Timestamp")
		return
	}
	return
}

// MarshalMsg implements msgp.Marshaler

		err = msgp.WrapError(err, "NextCycle")
		return
	}
	// write "LastUpdate"
	err = en.Append(0xaa, 0x4c, 0x61, 0x73, 0x74, 0x55, 0x70, 0x64, 0x61, 0x74, 0x65)
	if err != nil {
		return
	}
	err = en.WriteTime(z.LastUpdate)
	if err != nil {
		err = msgp.WrapError(err, "LastUpdate")
		return
	}
	// write "SkipHealing"
	err = en.Append(0xab, 0x53, 0x6b, 0x69, 0x70, 0x48, 0x65, 0x61, 0x6c, 0x69, 0x6e, 0x67)

        then:
        1 * fileAccess.writeFile(!null) >> { Runnable action -> action.run() }
        1 * backingCache.put("key", "value")
        0 * _._
    }

    def "holds write lock while removing entry from cache"() {
        given:
        cacheOpened()

        when:
        cache.remove("key")

        then:
        1 * fileAccess.writeFile(!null) >> { Runnable action -> action.run() }

        lock.updateFile {}

        then:
        thrown FileIntegrityViolationException
    }

    def "writeFile does not throw integrity exception when not cleanly unlocked file"() {
        given:
        unlockUncleanly()

        when:
        createLock(Exclusive).writeFile {}

        then:
        notThrown FileIntegrityViolationException
    }

    def "can lock a file"() {

        // Use writeFile because the cache can internally recover from datafile
        // corruption, so we don't care at this level if it's corrupt
        fileAccess.writeFile(() -> cache.put(key, value));
    }

    @Override
    public void remove(final K key) {
        final BTreePersistentIndexedCache<K, V> cache = getCache();
        // Use writeFile because the cache can internally recover from datafile

            if (buildArtifacts) {
                files.each {
                    writeFile("file-file", writer, it)
                }
                files.filter { true }.each {
                    writeFile("file-filtered", writer, it)
                }

                incomingFiles.each {
                    writeFile("incoming-file", writer, it)
                }
                incomingArtifacts.each {

		os.RemoveAll(dir)
		log.Fatal(err)
	}
	tmpdir = dir

	writeFile("p1.go", `
		package p1

		func F() {
			println("hello from p1")
		}
	`)
	writeFile("p2.go", `
		package p2

		import "./p1"

		func F() {
			p1.F()
			println("hello from p2")
		}

		func main() {}
	`)
	writeFile("p3.go", `
		package main

		import "./p2"

		func main() {
			p2.F()