Philip Hyunsu Cho 6daa6ee4e0 [R] Address warnings to comply with CRAN submission policy (#5600)
* [R] Address warnings to comply with CRAN submission policy

* Include <xgboost/logging.h>
2020-05-04 09:08:16 -07:00
..
2015-03-08 00:38:22 +01:00
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