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diff --git a/src/doc/book/listings/ch12-an-io-project/output-only-02-missing-lifetimes/output.txt b/src/doc/book/listings/ch12-an-io-project/output-only-02-missing-lifetimes/output.txt
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+++ b/src/doc/book/listings/ch12-an-io-project/output-only-02-missing-lifetimes/output.txt
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+$ cargo build
+ Compiling minigrep v0.1.0 (file:///projects/minigrep)
+error[E0106]: missing lifetime specifier
+ --> src/lib.rs:28:51
+ |
+28 | pub fn search(query: &str, contents: &str) -> Vec<&str> {
+ | ---- ---- ^ expected named lifetime parameter
+ |
+ = help: this function's return type contains a borrowed value, but the signature does not say whether it is borrowed from `query` or `contents`
+help: consider introducing a named lifetime parameter
+ |
+28 | pub fn search<'a>(query: &'a str, contents: &'a str) -> Vec<&'a str> {
+ | ++++ ++ ++ ++
+
+For more information about this error, try `rustc --explain E0106`.
+error: could not compile `minigrep` due to previous error