Memory leak?

Created by: rgurzhiy

I've made a simple OSX application:

AppDelegate.m

#import "AppDelegate.h"
#import <Bolts/Bolts.h>

@interface AppDelegate ()
@property (weak) IBOutlet NSWindow *window;
@end

@implementation AppDelegate

- (IBAction) test:(id)sender {
    [[self testAsync] continueWithBlock:^id (BFTask *task) {
        NSLog(@"%@", task.result);
        return nil;
    }];
}

- (BFTask *) testAsync {
    BFTaskCompletionSource *completionSource = [BFTaskCompletionSource taskCompletionSource];

    [[BFTask taskWithDelay:1000] continueWithBlock:^id (BFTask *task) {
        [completionSource setResult:[NSDate date]];
        return nil;
    }];

    return completionSource.task;
}

@end

When I run it with Allocations instrument, I get the trace BoltsMemory.trace.zip

Almost every time - (IBAction) test:(id)sender is being executed new allocations are added to the trace and stay Live forever. As you can see responsible caller is -[BFTask trySetResult:] or -[BFTask continueWithExecutor:block:cancellationToken:]

Can it be considered as memory leak?