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Update printing-to-screen post to use spin 0.4.5
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@@ -462,7 +462,7 @@ To use a spinning mutex, we can add the [spin crate] as a dependency:
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# in Cargo.toml
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# in Cargo.toml
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[dependencies]
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[dependencies]
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rlibc = "0.1.4"
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rlibc = "0.1.4"
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spin = "0.3.4"
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spin = "0.4.5"
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```
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```
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```rust
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```rust
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