Rust

Combined version of LMDB mdb.master and mdb.master3 #351

Job	Run time
Check all the features of the heed project (ubuntu-latest)	22s
Check all the features of the heed3 project (ubuntu-latest)	26s
Check all the features of the heed project (macos-latest)	28s
Check all the features of the heed3 project (macos-latest)	30s
Check the heed3 project (ubuntu-latest)	25s
Run the heed examples (ubuntu-latest)	31s
Check the heed3 project (windows-latest)	49s
Run the heed examples (macos-latest)	37s
Ensure the heed project is formatted	12s
Check the heed3 project (macos-latest)	27s
Run the heed3 examples (ubuntu-latest)	27s
Run the heed3 examples (macos-latest)	30s
Test the heed project (ubuntu-latest)	35s
Test the heed project (windows-latest)	2m 4s
Test the heed project (macos-latest)	48s
	9m 11s

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