Merge branch 'master' into overflow

Author: ehuss

src/what-unsafe-does.md

@@ -71,7 +71,6 @@ Rust considers it "safe" to:
 * Deadlock
 * Have a [race condition][race]
 * Leak memory
-* Fail to call destructors
 * Overflow integers (with the built-in operators such as `+` etc.)
 * Abort the program
 * Delete the production database