Rust

Add exponential backoff and log suppression for scheduler disconnection #57

Job	Run time
windows test	14m 46s
linux build test	6m 4s
check linux workspace	4m 42s
Clippy (amd64, stable)	5m 53s
test linux balista	8m 1s
Check Cargo.toml formatting (amd64, stable)	1m 14s
test linux crates	8m 12s
macos test	12m 48s
verify benchmark results (amd64)	17m 14s
Lint	36s
cargo doc	2m 27s
	1h 21m 57s

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