Rust升级到1.70.0
C:\Users\hann>rustup update
info: syncing channel updates for 'stable-x86_64-pc-windows-gnu'
info: latest update on 2023-06-01, rust version 1.70.0 (90c541806 2023-05-31)
info: downloading component 'cargo'
info: downloading component 'clippy'
info: downloading component 'rust-docs'
info: downloading component 'rust-mingw'
info: downloading component 'rust-std'
info: downloading component 'rustc'
72.8 MiB / 72.8 MiB (100 %) 31.5 MiB/s in 2s ETA: 0s
info: downloading component 'rustfmt'
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stable-x86_64-pc-windows-gnu updated - rustc 1.70.0 (90c541806 2023-05-31) (from rustc 1.69.0 (84c898d65 2023-04-16))
stable-x86_64-pc-windows-msvc updated - rustc 1.70.0 (90c541806 2023-05-31) (from rustc 1.69.0 (84c898d65 2023-04-16))

info: cleaning up downloads & tmp directories

C:\Users\hann>rustc -V
rustc 1.70.0 (90c541806 2023-05-31)