warning: an implementation of `From` is preferred since it gives you `Into<_>` for free where the reverse isn't true
  --> src/data_model/time.rs:10:1
   |
10 | impl Into<Duration> for Milliseconds {
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = help: `impl From<Local> for Foreign` is allowed by the orphan rules, for more information see
           https://doc.rust-lang.org/reference/items/implementations.html#trait-implementation-coherence
   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#from_over_into
   = note: `#[warn(clippy::from_over_into)]` on by default
help: replace the `Into` implementation with `From<data_model::time::Milliseconds>`
   |
10 ~ impl From<Milliseconds> for Duration {
11 ~     fn from(val: Milliseconds) -> Self {
12 ~         Duration::try_milliseconds(val.0).unwrap()
   |

warning: an implementation of `From` is preferred since it gives you `Into<_>` for free where the reverse isn't true
  --> src/data_model/time.rs:10:1
   |
10 | impl Into<Duration> for Milliseconds {
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = help: `impl From<Local> for Foreign` is allowed by the orphan rules, for more information see
           https://doc.rust-lang.org/reference/items/implementations.html#trait-implementation-coherence
   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#from_over_into
   = note: `#[warn(clippy::from_over_into)]` on by default
help: replace the `Into` implementation with `From<data_model::time::Milliseconds>`
   |
10 ~ impl From<Milliseconds> for Duration {
11 ~     fn from(val: Milliseconds) -> Self {
12 ~         Duration::try_milliseconds(val.0).unwrap()
   |

warning: associated function `new` is never used
  --> src/data_model/time.rs:35:12
   |
34 | impl Timespan {
   | ------------- associated function in this implementation
35 |     pub fn new(start: DateTimeUtc, end: DateTimeUtc) -> Self {
   |            ^^^
   |
   = note: `#[warn(dead_code)]` on by default