Merge commit 'b52fb5234cd7c11ecfae51897a6f7fa52e8777fc' into clippyup

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diff --git a/src/docs/integer_division.txt b/src/docs/integer_division.txt
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+### What it does
+Checks for division of integers
+
+### Why is this bad?
+When outside of some very specific algorithms,
+integer division is very often a mistake because it discards the
+remainder.
+
+### Example
+```
+let x = 3 / 2;
+println!("{}", x);
+```
+
+Use instead:
+```
+let x = 3f32 / 2f32;
+println!("{}", x);
+```
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