$ rustc TemperatureTable.rs error: unknown format trait `s` --> TemperatureTable.rs:13:31 | 13 | println!("{}", format!("{0:>7s} {1:>7s} {2:>7s} {3:>7s}", "C", "F", "K", "R")); | ^ | = note: the only appropriate formatting traits are: - ``, which uses the `Display` trait - `?`, which uses the `Debug` trait - `e`, which uses the `LowerExp` trait - `E`, which uses the `UpperExp` trait - `o`, which uses the `Octal` trait - `p`, which uses the `Pointer` trait - `b`, which uses the `Binary` trait - `x`, which uses the `LowerHex` trait - `X`, which uses the `UpperHex` trait error: unknown format trait `s` --> TemperatureTable.rs:13:39 | 13 | println!("{}", format!("{0:>7s} {1:>7s} {2:>7s} {3:>7s}", "C", "F", "K", "R")); | ^ | = note: the only appropriate formatting traits are: - ``, which uses the `Display` trait - `?`, which uses the `Debug` trait - `e`, which uses the `LowerExp` trait - `E`, which uses the `UpperExp` trait - `o`, which uses the `Octal` trait - `p`, which uses the `Pointer` trait - `b`, which uses the `Binary` trait - `x`, which uses the `LowerHex` trait - `X`, which uses the `UpperHex` trait error: unknown format trait `s` --> TemperatureTable.rs:13:47 | 13 | println!("{}", format!("{0:>7s} {1:>7s} {2:>7s} {3:>7s}", "C", "F", "K", "R")); | ^ | = note: the only appropriate formatting traits are: - ``, which uses the `Display` trait - `?`, which uses the `Debug` trait - `e`, which uses the `LowerExp` trait - `E`, which uses the `UpperExp` trait - `o`, which uses the `Octal` trait - `p`, which uses the `Pointer` trait - `b`, which uses the `Binary` trait - `x`, which uses the `LowerHex` trait - `X`, which uses the `UpperHex` trait error: unknown format trait `s` --> TemperatureTable.rs:13:55 | 13 | println!("{}", format!("{0:>7s} {1:>7s} {2:>7s} {3:>7s}", "C", "F", "K", "R")); | ^ | = note: the only appropriate formatting traits are: - ``, which uses the `Display` trait - `?`, which uses the `Debug` trait - `e`, which uses the `LowerExp` trait - `E`, which uses the `UpperExp` trait - `o`, which uses the `Octal` trait - `p`, which uses the `Pointer` trait - `b`, which uses the `Binary` trait - `x`, which uses the `LowerHex` trait - `X`, which uses the `UpperHex` trait error: unknown format trait `f` --> TemperatureTable.rs:21:34 | 21 | println!("{}", format!("{0:7.2f} {1:7.2f} {2:7.2f} {3:7.2f}", degreesC, degreesF, degreesK, degreesR)); | ^ | = note: the only appropriate formatting traits are: - ``, which uses the `Display` trait - `?`, which uses the `Debug` trait - `e`, which uses the `LowerExp` trait - `E`, which uses the `UpperExp` trait - `o`, which uses the `Octal` trait - `p`, which uses the `Pointer` trait - `b`, which uses the `Binary` trait - `x`, which uses the `LowerHex` trait - `X`, which uses the `UpperHex` trait error: unknown format trait `f` --> TemperatureTable.rs:21:43 | 21 | println!("{}", format!("{0:7.2f} {1:7.2f} {2:7.2f} {3:7.2f}", degreesC, degreesF, degreesK, degreesR)); | ^ | = note: the only appropriate formatting traits are: - ``, which uses the `Display` trait - `?`, which uses the `Debug` trait - `e`, which uses the `LowerExp` trait - `E`, which uses the `UpperExp` trait - `o`, which uses the `Octal` trait - `p`, which uses the `Pointer` trait - `b`, which uses the `Binary` trait - `x`, which uses the `LowerHex` trait - `X`, which uses the `UpperHex` trait error: unknown format trait `f` --> TemperatureTable.rs:21:52 | 21 | println!("{}", format!("{0:7.2f} {1:7.2f} {2:7.2f} {3:7.2f}", degreesC, degreesF, degreesK, degreesR)); | ^ | = note: the only appropriate formatting traits are: - ``, which uses the `Display` trait - `?`, which uses the `Debug` trait - `e`, which uses the `LowerExp` trait - `E`, which uses the `UpperExp` trait - `o`, which uses the `Octal` trait - `p`, which uses the `Pointer` trait - `b`, which uses the `Binary` trait - `x`, which uses the `LowerHex` trait - `X`, which uses the `UpperHex` trait error: unknown format trait `f` --> TemperatureTable.rs:21:61 | 21 | println!("{}", format!("{0:7.2f} {1:7.2f} {2:7.2f} {3:7.2f}", degreesC, degreesF, degreesK, degreesR)); | ^ | = note: the only appropriate formatting traits are: - ``, which uses the `Display` trait - `?`, which uses the `Debug` trait - `e`, which uses the `LowerExp` trait - `E`, which uses the `UpperExp` trait - `o`, which uses the `Octal` trait - `p`, which uses the `Pointer` trait - `b`, which uses the `Binary` trait - `x`, which uses the `LowerHex` trait - `X`, which uses the `UpperHex` trait error[E0610]: `{integer}` is a primitive type and therefore doesn't have fields --> TemperatureTable.rs:18:50 | 18 | let mut degreesF:f64 = 1.8f64 * degreesC + 32.f64; | ^^^ | help: if intended to be a floating point literal, consider adding a `0` after the period | 18 | let mut degreesF:f64 = 1.8f64 * degreesC + 32.0f64; | + error: aborting due to 9 previous errors For more information about this error, try `rustc --explain E0610`.