Tests

sync: update rextendr #143

Job	Run time
windows-latest (R-release rust-stable-msvc)	15m 48s
windows-latest (R-devel rust-stable-msvc)	12m 33s
ubuntu-latest w/ bindgen (R-devel rust-stable )	2m 41s
windows-latest (R-oldrel rust-stable-msvc)	16m 11s
macOS-latest w/ bindgen (R-devel rust-stable )	3m 39s
windows-latest w/ bindgen (R-release rust-stable-msvc x86_64-pc-windows-gnu)	9m 51s
macOS-latest (R-release rust-stable)	16m 48s
ubuntu-latest (R-release rust-stable)	5m 54s
windows-latest w/ bindgen (R-devel rust-stable-msvc x86_64-pc-windows-gnu)	3m 52s
ubuntu-latest (R-release rust-nightly)	5m 47s
windows-latest w/ bindgen (R-release rust-nightly-msvc x86_64-pc-windows-gnu)	7m 59s
ubuntu-latest (R-devel rust-stable)	5m 50s
windows-latest w/ bindgen (R-oldrel rust-nightly-msvc x86_64-pc-windows-gnu)	6m 41s
ubuntu-latest (R-oldrel rust-stable)	6m 0s
	1h 59m 34s

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