Alex Crichton 0992e45e7f Use std::fs read/write conveniences
In addition to being more ergonomic these are much more efficient at reading
large files as they preallocate internally. This provides a nice speed boost
locally, reducing the overhead of `wasm-bindgen-test-runner` from 0.23s to
0.19s, yay!
2018-07-25 16:08:42 -07:00
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2018-07-25 16:08:42 -07:00