Test failure: checkptr: converted pointer straddles multiple allocations

```
=== RUN TestServiceBasic
fatal error: checkptr: converted pointer straddles multiple allocations

goroutine 8 [running]:
runtime.throw(0xef145f, 0x3a)
/opt/hostedtoolcache/go/1.15.13/x64/src/runtime/panic.go:1116 +0x72 fp=0xc0000895f0 sp=0xc0000895c0 pc=0x46a872
runtime.checkptrAlignment(0xc000028c70, 0xe84c20, 0x1)
/opt/hostedtoolcache/go/1.15.13/x64/src/runtime/checkptr.go:20 +0xc9 fp=0xc000089620 sp=0xc0000895f0 pc=0x439729
github.com/boltdb/bolt.(*Bucket).write(0xc000089790, 0x0, 0x0, 0x0)
/home/runner/go/pkg/mod/github.com/boltdb/bolt@v1.3.1/bucket.go:626 +0x15f fp=0xc000089688 sp=0xc000089620 pc=0xd74bff
github.com/boltdb/bolt.(*Bucket).CreateBucket(0xc000162018, 0xc000031610, 0x4, 0x8, 0xc000031610, 0xed157c, 0x4)
/home/runner/go/pkg/mod/github.com/boltdb/bolt@v1.3.1/bucket.go:188 +0x32d fp=0xc000089840 sp=0xc000089688 pc=0xd7104d
github.com/boltdb/bolt.(*Bucket).CreateBucketIfNotExists(0xc000162018, 0xc000031610, 0x4, 0x8, 0x4, 0x8, 0x0)
/home/runner/go/pkg/mod/github.com/boltdb/bolt@v1.3.1/bucket.go:206 +0x5e fp=0xc0000898a8 sp=0xc000089840 pc=0xd714de
github.com/boltdb/bolt.(*Tx).CreateBucketIfNotExists(...)
/home/runner/go/pkg/mod/github.com/boltdb/bolt@v1.3.1/tx.go:115
github.com/Comcast/sheens/cmd/mcrew.(*Storage).EnsureCrew.func1(0xc000162000, 0xc000048c01, 0xc000162000)
```