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Fix beta clippy issue:
error: file opened with `create`, but `truncate` behavior not defined
--> src/main.rs:624:26
|
624 | .create(true)
| ^^^^^^^^^^^^- help: add: `.truncate(true)`
|
= help: if you intend to overwrite an existing file entirely, call `.truncate(true)`
= help: if you instead know that you may want to keep some parts of the old file, call `.truncate(false)`
= help: alternatively, use `.append(true)` to append to the file instead of overwriting it
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#suspicious_open_options
= note: `-D clippy::suspicious-open-options` implied by `-D warnings`
= help: to override `-D warnings` add `#[allow(clippy::suspicious_open_options)]`
Signed-off-by: Bo Chen <chen.bo@intel.com>