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$ cargo build
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Compiling libc v0.2.86
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Compiling getrandom v0.2.2
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Compiling cfg-if v1.0.0
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Compiling ppv-lite86 v0.2.10
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Compiling rand_core v0.6.2
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Compiling rand_chacha v0.3.0
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Compiling rand v0.8.5
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Compiling guessing_game v0.1.0 (file:///projects/guessing_game)
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error[E0308]: mismatched types
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--> src/main.rs:22:21
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22 | match guess.cmp(&secret_number) {
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| --- ^^^^^^^^^^^^^^ expected `&String`, found `&{integer}`
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| arguments to this method are incorrect
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= note: expected reference `&String`
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found reference `&{integer}`
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note: method defined here
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--> /rustc/9b00956e56009bab2aa15d7bff10916599e3d6d6/library/core/src/cmp.rs:836:8
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For more information about this error, try `rustc --explain E0308`.
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error: could not compile `guessing_game` (bin "guessing_game") due to 1 previous error
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