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eliminate the warnings #1301

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Dec 27, 2019
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eliminate the warnings #1301

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4 changes: 2 additions & 2 deletions src/error/multiple_error_types/boxing_errors.md
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Original file line number Diff line number Diff line change
Expand Up @@ -13,7 +13,7 @@ use std::error;
use std::fmt;

// Change the alias to `Box<error::Error>`.
type Result<T> = std::result::Result<T, Box<error::Error>>;
type Result<T> = std::result::Result<T, Box<dyn error::Error>>;

#[derive(Debug, Clone)]
struct EmptyVec;
Expand All @@ -29,7 +29,7 @@ impl error::Error for EmptyVec {
"invalid first item to double"
}

fn cause(&self) -> Option<&error::Error> {
fn cause(&self) -> Option<&(dyn error::Error)> {
// Generic error, underlying cause isn't tracked.
None
}
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