dep ensure failed

[daixiang0]

$ dep ensure -v
(1/12) Wrote github.com/benbjohnson/phantomjs@master
(2/12) Wrote github.com/gofrs/uuid@v3.2.0
(3/12) Wrote github.com/bmaupin/go-epub@v0.5.0
(4/12) Wrote golang.org/x/text@v0.3.0
(5/12) Wrote github.com/go-yaml/yaml@v2.2.2
(6/12) Wrote github.com/mattn/go-runewidth@v0.0.4
(7/12) Failed to write golang.org/x/net@master
(8/12) Failed to write golang.org/x/sys@master
(9/12) Failed to write gopkg.in/cheggaaa/pb.v1@v1.0.27
(10/12) Failed to write github.com/antchfx/htmlquery@v1.0.0
(11/12) Failed to write github.com/antchfx/xpath@master
(12/12) Failed to write github.com/urfave/cli@v1.20.0
grouped write of manifest, lock and vendor: error while writing out vendor tree: failed to write dep tree: failed to export golang.org/x/net: fatal: failed to unpack tree object 3a22650c66bd7f4fb6d1e8072ffd7b75c8a27898
: exit status 128

$ dep version
dep:
 version     : devel
 build date  : 
 git hash    : 
 go version  : go1.9.4
 go compiler : gc
 platform    : linux/amd64
 features    : ImportDuringSolve=false
$ go version
go version go1.11 linux/amd64