message: Fix tests when CARGO_TARGET_DIR is set.
  Fixes
diff: @@ -23,7 +23,7 @@ fn cargo_build_plan_simple() {
  "invocations": [
  {
  "args": "{...}",
  - "cwd": "[..][/]target[/]cit[/][..][/]foo",
  + "cwd": "[..][/]cit[/][..][/]foo",
  "deps": [],
  "env": "{...}",
  "kind": "Host",
  @@ -93,7 +93,7 @@ fn cargo_build_plan_single_dep() {
  "invocations": [
  {
  "args": "{...}",
  - "cwd": "[..][/]target[/]cit[/][..][/]foo",
  + "cwd": "[..][/]cit[/][..][/]foo",
  "deps": [],
  "env": "{...}",
  "kind": "Host",
  @@ -108,7 +108,7 @@ fn cargo_build_plan_single_dep() {
  },
  {
  "args": "{...}",
  - "cwd": "[..][/]target[/]cit[/][..][/]foo",
  + "cwd": "[..][/]cit[/][..][/]foo",
  "deps": [0],
  "env": "{...}",
  "kind": "Host",
  @@ -160,7 +160,7 @@ fn cargo_build_plan_build_script() {
  "invocations": [
  {
  "args": "{...}",
  - "cwd": "[..][/]target[/]cit[/][..][/]foo",
  + "cwd": "[..][/]cit[/][..][/]foo",
  "deps": [],
  "env": "{...}",
  "kind": "Host",
  @@ -175,7 +175,7 @@ fn cargo_build_plan_build_script() {
  },
  {
  "args": "{...}",
  - "cwd": "[..][/]target[/]cit[/][..][/]foo",
  + "cwd": "[..][/]cit[/][..][/]foo",
  "deps": [0],
  "env": "{...}",
  "kind": "Host",
  @@ -188,7 +188,7 @@ fn cargo_build_plan_build_script() {
  },
  {
  "args": "{...}",
  - "cwd": "[..][/]target[/]cit[/][..][/]foo",
  + "cwd": "[..][/]cit[/][..][/]foo",
  "deps": [1],
  "env": "{...}",
  "kind": "Host",
  