Go panic in weave container

[berlic]

What you expected to happen?

Weave container to run smoothly.

What happened?

panic: assignment to entry in nil map

goroutine 82 [running]:
github.com/weaveworks/weave/vendor/github.com/weaveworks/mesh.makeLocalConnectionStatusSlice.func1(0xc421263f40)
    /go/src/github.com/weaveworks/weave/vendor/github.com/weaveworks/mesh/status.go:179 +0x42f
github.com/weaveworks/weave/vendor/github.com/weaveworks/mesh.(*connectionMaker).queryLoop(0xc4212c0620, 0xc42133a300)
    /go/src/github.com/weaveworks/weave/vendor/github.com/weaveworks/mesh/connection_maker.go:228 +0xf6
created by github.com/weaveworks/weave/vendor/github.com/weaveworks/mesh.newConnectionMaker
    /go/src/github.com/weaveworks/weave/vendor/github.com/weaveworks/mesh/connection_maker.go:75 +0x21a

How to reproduce it?

Don't know exact steps. Happens often when we start many (10-15) peers simultaneously.

Anything else we need to know?

Seems that this panic situation was suppressed in weaveworks/mesh#79 but weave 2.0.5 and 2.1.1 still refers to old version of mesh.

Versions:

$ weave version
weave script 2.0.4
weave 2.0.4
$ docker version
Client:
 Version:      17.06.2-ce
 API version:  1.30
 Go version:   go1.8.3
 Git commit:   cec0b72
 Built:        Tue Sep  5 20:00:17 2017
 OS/Arch:      linux/amd64

Server:
 Version:      17.06.2-ce
 API version:  1.30 (minimum version 1.12)
 Go version:   go1.8.3
 Git commit:   cec0b72
 Built:        Tue Sep  5 19:59:11 2017
 OS/Arch:      linux/amd64
 Experimental: false
$ uname -a
Linux Node-3 4.4.0-101-generic #124-Ubuntu SMP Fri Nov 10 18:29:59 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux

Logs:

$ docker logs weave
INFO: 2017/11/21 07:34:40.343172 ->[45.63.92.80:6783|fe:3b:45:b1:ea:4b(Call-9)]: connection added (new peer)
INFO: 2017/11/21 07:34:40.343532 ->[104.238.182.129:33934|b6:88:97:c8:d0:ba(Call-8)]: connection added (new peer)
INFO: 2017/11/21 07:34:40.343767 ->[45.63.93.145:59070|d2:b8:0e:ce:de:5a(Call-3)]: connection added (new peer)
INFO: 2017/11/21 07:34:40.343985 ->[104.238.181.46:33251|22:86:72:9c:eb:5c(Call-2)]: connection added (new peer)
INFO: 2017/11/21 07:34:40.344248 ->[45.77.188.54:6783|66:4c:cb:70:8c:b7(Call-6)]: connection added (new peer)
INFO: 2017/11/21 07:34:40.345839 ->[104.238.182.129:6783|b6:88:97:c8:d0:ba(Call-8)]: connection ready; using protocol version 2
panic: assignment to entry in nil map

goroutine 82 [running]:
github.com/weaveworks/weave/vendor/github.com/weaveworks/mesh.makeLocalConnectionStatusSlice.func1(0xc421263f40)
    /go/src/github.com/weaveworks/weave/vendor/github.com/weaveworks/mesh/status.go:179 +0x42f
github.com/weaveworks/weave/vendor/github.com/weaveworks/mesh.(*connectionMaker).queryLoop(0xc4212c0620, 0xc42133a300)
    /go/src/github.com/weaveworks/weave/vendor/github.com/weaveworks/mesh/connection_maker.go:228 +0xf6
created by github.com/weaveworks/weave/vendor/github.com/weaveworks/mesh.newConnectionMaker
    /go/src/github.com/weaveworks/weave/vendor/github.com/weaveworks/mesh/connection_maker.go:75 +0x21a