Fix deleted destructors. #1585

Job	Run time
Address Sanitizer	1m 2s
Examples Rust nightly	9m 44s
Examples Rust beta	8m 6s
Examples Rust stable	9m 59s
Examples macOS	11m 33s
Examples Windows (gnu)	9m 20s
Examples Windows (msvc)	11m 22s
Test Rust nightly	25s
Test Rust beta	58s
Test Rust stable	2m 16s
Test macOS	39s
Test Windows (msvc)	53s
Clippy	13s
Docs	21s
Test forcing wrapper generation	30s
Format	5s
Outdated	6s
	1h 7m 32s

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