Make Cargo print timing information to stdout
Make Cargo print timing information to stdout

This adds lines such as

```
   Completed cssparser v0.27.1 custom-build in 2.4s
   Completed cssparser v0.27.1 custom-build (run) in 0.6s
   Completed cssparser v0.27.1 in 1.1s
```

KiChjang/servo,splav/servo,DominoTree/servo,DominoTree/servo,splav/servo,DominoTree/servo,DominoTree/servo,KiChjang/servo,splav/servo,splav/servo,DominoTree/servo,splav/servo,KiChjang/servo,KiChjang/servo,KiChjang/servo,DominoTree/servo,DominoTree/servo,DominoTree/servo,KiChjang/servo,splav/servo,KiChjang/servo,splav/servo,splav/servo,KiChjang/servo,DominoTree/servo,splav/servo,KiChjang/servo,splav/servo,DominoTree/servo,KiChjang/servo