Crash on tab completion

[peterebden]

Looks like you need remote execution enabled and just do plz help <tab>

$ plz help panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x38 pc=0xb8880a]

goroutine 1 [running]:
github.com/thought-machine/please/src/remote/fs.New({0xfbdfc0?, 0xc00122c100}, 0x0, {0xc001b87b85, 0x2})
	src/remote/fs/fs.go:67 +0x4a
github.com/thought-machine/please/src/remote.(*Client).SubrepoFS(0xc0004d0580, 0xc001fe7368?, {0xc001b87b85, 0x2})
	src/remote/remote.go:329 +0xcc
github.com/thought-machine/please/src/core.(*Subrepo).FS.func1()
	src/core/subrepo.go:58 +0x70
sync.(*Once).doSlow(0xc001fe73b0?, 0x4125ba?)
	sync/once.go:74 +0xbf
sync.(*Once).Do(...)
	sync/once.go:65
github.com/thought-machine/please/src/core.(*Subrepo).FS(0xc001c186e0)
	src/core/subrepo.go:51 +0x4a
github.com/thought-machine/please/src/help.getPluginBuildDefs(0xc001c186e0)
	src/help/help.go:239 +0x189
github.com/thought-machine/please/src/help.allTopics({0x7ffc1da78864, 0x0}, 0xc0004de000)
	src/help/help.go:319 +0x58b
github.com/thought-machine/please/src/help.Topic.Complete({0xd2c780?, 0xcf8d00?}, {0x7ffc1da78864, 0x0})
	src/help/completion.go:27 +0x57
github.com/thought-machine/go-flags.(*completion).completeValue(0xc000448f80?, {0xcf8d00?, 0x15c3368?, 0x4?}, 0x0, {0x0, 0x0}, {0x7ffc1da78864, 0x0})
	pkg/linux_amd64/github.com/thought-machine/go-flags/completion.go:153 +0x1e7
github.com/thought-machine/go-flags.(*completion).complete(0xc000275c68, {0xc000036080?, 0x1?, 0x0?})
	pkg/linux_amd64/github.com/thought-machine/go-flags/completion.go:295 +0xa4e
github.com/thought-machine/go-flags.(*Parser).ParseArgs(0xc000448080, {0xc000036080?, 0x6, 0x6})
	pkg/linux_amd64/github.com/thought-machine/go-flags/parser.go:233 +0x28a
github.com/peterebden/go-cli-init/v5/flags.ParseFlags({0xe639e5, 0x6}, {0xcba760, 0x15c2bc0}, {0xc000036070, 0x7, 0x7}, 0x4, 0xed1328, 0xed1180)
	pkg/linux_amd64/github.com/peterebden/go-cli-init/v5/flags/flags.go:38 +0x372
github.com/thought-machine/please/src/cli.ParseFlags(...)