Replace govendor with dep. Update to latest version of all dependencies.

.gitignore

@@ -1,3 +1,4 @@
 .*.sw?
 process-exporter
 dist
+vendor/

.travis.yml

@@ -3,15 +3,23 @@ services:
 
 language: go
 
+env:
+  - DEP_VERSION="0.5.0"
+
 go:
   - 1.10.x
 
 before_install:
   - sudo apt-get -qq update
   - sudo apt-get install -y rpm
+  - curl -L -s https://github.com/golang/dep/releases/download/v${DEP_VERSION}/dep-linux-amd64 -o $GOPATH/bin/dep
+  - chmod +x $GOPATH/bin/dep
 
 go_import_path: github.com/ncabatoff/process-exporter
 
+install:
+  - dep ensure
+
 script:
   - make style vet test
 

Gopkg.toml

@@ -0,0 +1,58 @@
+# Gopkg.toml example
+#
+# Refer to https://github.com/golang/dep/blob/master/docs/Gopkg.toml.md
+# for detailed Gopkg.toml documentation.
+#
+# required = ["github.com/user/thing/cmd/thing"]
+# ignored = ["github.com/user/project/pkgX", "bitbucket.org/user/project/pkgA/pkgY"]
+#
+# [[constraint]]
+#   name = "github.com/user/project"
+#   version = "1.0.0"
+#
+# [[constraint]]
+#   name = "github.com/user/project2"
+#   branch = "dev"
+#   source = "github.com/myfork/project2"
+#
+# [[override]]
+#   name = "github.com/x/y"
+#   version = "2.4.0"
+#
+# [prune]
+#   non-go = false
+#   go-tests = true
+#   unused-packages = true
+
+
+[[constraint]]
+  name = "github.com/fatih/structs"
+  version = "1.0.0"
+
+[[constraint]]
+  name = "github.com/google/go-cmp"
+  version = "0.2.0"
+
+[[constraint]]
+  branch = "master"
+  name = "github.com/ncabatoff/fakescraper"
+
+[[constraint]]
+  name = "github.com/prometheus/client_golang"
+  version = "0.8.0"
+
+[[constraint]]
+  branch = "master"
+  name = "github.com/prometheus/procfs"
+
+[[constraint]]
+  branch = "v1"
+  name = "gopkg.in/check.v1"
+
+[[constraint]]
+  name = "gopkg.in/yaml.v2"
+  version = "2.2.1"
+
+[prune]
+  go-tests = true
+  unused-packages = true

proc/read.go

@@ -176,7 +176,7 @@ type (
 	// FS implements Source.
 	FS struct {
 		procfs.FS
-		BootTime   int64
+		BootTime   uint64
 		MountPoint string
 	}
 )
@@ -307,7 +307,7 @@ func (p *proccache) GetStatic() (Static, error) {
 	if err != nil {
 		return Static{}, err
 	}
-	startTime := time.Unix(p.fs.BootTime, 0).UTC()
+	startTime := time.Unix(int64(p.fs.BootTime), 0).UTC()
 	startTime = startTime.Add(time.Second / userHZ * time.Duration(stat.Starttime))
 	return Static{
 		Name:      stat.Comm,