Cargo stopped generating this in its project template 5 years ago. It
would belong in a global gitignore instead.

    warning: the following explicit lifetimes could be elided: 'a
      --> src/aserror.rs:47:6
       |
    47 | impl<'a> Sealed for dyn Error + 'a {}
       |      ^^                         ^^
       |
       = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#elidable_lifetime_names
       = note: `-W clippy::elidable-lifetime-names` implied by `-W clippy::pedantic`
       = help: to override `-W clippy::pedantic` add `#[allow(clippy::elidable_lifetime_names)]`
    help: elide the lifetimes
       |
    47 - impl<'a> Sealed for dyn Error + 'a {}
    47 + impl Sealed for dyn Error + '_ {}
       |

    warning: the following explicit lifetimes could be elided: 'a
      --> src/aserror.rs:48:6
       |
    48 | impl<'a> Sealed for dyn Error + Send + 'a {}
       |      ^^                                ^^
       |
       = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#elidable_lifetime_names
    help: elide the lifetimes
       |
    48 - impl<'a> Sealed for dyn Error + Send + 'a {}
    48 + impl Sealed for dyn Error + Send + '_ {}
       |

    warning: the following explicit lifetimes could be elided: 'a
      --> src/aserror.rs:49:6
       |
    49 | impl<'a> Sealed for dyn Error + Send + Sync + 'a {}
       |      ^^                                       ^^
       |
       = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#elidable_lifetime_names
    help: elide the lifetimes
       |
    49 - impl<'a> Sealed for dyn Error + Send + Sync + 'a {}
    49 + impl Sealed for dyn Error + Send + Sync + '_ {}
       |

    warning: the following explicit lifetimes could be elided: 'a
      --> src/aserror.rs:50:6
       |
    50 | impl<'a> Sealed for dyn Error + Send + Sync + UnwindSafe + 'a {}
       |      ^^                                                    ^^
       |
       = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#elidable_lifetime_names
    help: elide the lifetimes
       |
    50 - impl<'a> Sealed for dyn Error + Send + Sync + UnwindSafe + 'a {}
    50 + impl Sealed for dyn Error + Send + Sync + UnwindSafe + '_ {}
       |

    warning: the following explicit lifetimes could be elided: 'a
     --> src/var.rs:5:6
      |
    5 | impl<'a, T: Pointer + ?Sized> Pointer for Var<'a, T> {
      |      ^^                                       ^^
      |
      = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#elidable_lifetime_names
      = note: `-W clippy::elidable-lifetime-names` implied by `-W clippy::pedantic`
      = help: to override `-W clippy::pedantic` add `#[allow(clippy::elidable_lifetime_names)]`
    help: elide the lifetimes
      |
    5 - impl<'a, T: Pointer + ?Sized> Pointer for Var<'a, T> {
    5 + impl<T: Pointer + ?Sized> Pointer for Var<'_, T> {
      |

    warning: the following explicit lifetimes could be elided: 'a
      --> tests/test_lints.rs:40:22
       |
    40 |     pub enum MyError<'a> {
       |                      ^^
       |
       = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#elidable_lifetime_names
       = note: `-W clippy::elidable-lifetime-names` implied by `-W clippy::pedantic`
       = help: to override `-W clippy::pedantic` add `#[allow(clippy::elidable_lifetime_names)]`
    help: elide the lifetimes
       |
    40 -     pub enum MyError<'a> {
    40 +     pub enum MyError'_> {
       |

    warning: the following explicit lifetimes could be elided: 'a
       --> tests/test_display.rs:157:14
        |
    157 |         impl<'a> Display for Msg<'a> {
        |              ^^                  ^^
        |
        = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#elidable_lifetime_names
        = note: `-W clippy::elidable-lifetime-names` implied by `-W clippy::pedantic`
        = help: to override `-W clippy::pedantic` add `#[allow(clippy::elidable_lifetime_names)]`
    help: elide the lifetimes
        |
    157 -         impl<'a> Display for Msg<'a> {
    157 +         impl Display for Msg<'_> {
        |

Clippy elidable_lifetime_names lint