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error[E0381]: assigned binding `x.0` isn't fully initialized
--> $DIR/borrowck-partial-reinit-4.rs:17:5
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LL | let mut x : (Test2, Test2);
| ----- binding declared here but left uninitialized
LL | (x.0).0 = Some(Test);
| ^^^^^^^ `x.0` assigned here but it isn't fully initialized
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= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate it, or use `std::mem::MaybeUninit`
error: aborting due to 1 previous error
For more information about this error, try `rustc --explain E0381`.
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