Rust

Remove non-utc trait impls and make InfluxDbWriteable fail-able #346

Job	Run time
Style Check (clippy)	34s
README Format Check	1m 16s
Style Checks (rustfmt)	17s
Unit and Doc Tests (Rust Stable on windows-latest)	3m 7s
Unit and Doc Tests (Rust Stable on ubuntu-latest)	59s
Unit and Doc Tests (Rust Beta on ubuntu-latest)	34s
Unit and Doc Tests (Rust Nightly on macOS-latest)	29s
Unit and Doc Tests (Rust Stable on macOS-latest)	1m 2s
Unit and Doc Tests (Rust Nightly on windows-latest)	1m 39s
Code Coverage (stable/ubuntu-latest)	1m 9s
Unit and Doc Tests (Rust Beta on macOS-latest)	56s
Unit and Doc Tests (Rust MSRV on ubuntu-latest)	1m 47s
Integration Tests (Rust Stable with reqwest-client-rustls)	53s
Unit and Doc Tests (Rust Nightly on ubuntu-latest)	23s
Unit and Doc Tests (Rust Beta on windows-latest)	1m 44s
Integration Tests (Rust Stable with reqwest-client-native-tls-vendored)	2m 5s
Integration Tests (Rust Stable with reqwest-client-native-tls)	59s
pages	0s
	19m 53s

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