Rust

Remove non-utc trait impls and make InfluxDbWriteable fail-able #344

Job	Run time
Style Check (clippy)	35s
Style Checks (rustfmt)	13s
Code Coverage (stable/ubuntu-latest)	1m 27s
Integration Tests (Rust Stable with reqwest-client-rustls)	50s
README Format Check	1m 16s
Unit and Doc Tests (Rust Nightly on ubuntu-latest)	42s
Unit and Doc Tests (Rust Beta on windows-latest)	2m 25s
Unit and Doc Tests (Rust Beta on macOS-latest)	52s
Unit and Doc Tests (Rust Stable on windows-latest)	5m 0s
Unit and Doc Tests (Rust Nightly on windows-latest)	2m 2s
Integration Tests (Rust Stable with reqwest-client-native-tls)	59s
Integration Tests (Rust Stable with reqwest-client-native-tls-vendored)	2m 26s
Unit and Doc Tests (Rust Nightly on macOS-latest)	1m 2s
Unit and Doc Tests (Rust Beta on ubuntu-latest)	41s
Unit and Doc Tests (Rust Stable on ubuntu-latest)	41s
Unit and Doc Tests (Rust Stable on macOS-latest)	55s
Unit and Doc Tests (Rust MSRV on ubuntu-latest)	1m 51s
pages	0s
	23m 57s

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