error: single-character lifetime names are likely uninformative
  --> tests/ui/single_char_lifetime_names.rs:5:22
   |
LL | struct DiagnosticCtx<'a, 'b>
   |                      ^^
   |
   = help: use a more informative name
   = note: `-D clippy::single-char-lifetime-names` implied by `-D warnings`
   = help: to override `-D warnings` add `#[allow(clippy::single_char_lifetime_names)]`

error: single-character lifetime names are likely uninformative
  --> tests/ui/single_char_lifetime_names.rs:5:26
   |
LL | struct DiagnosticCtx<'a, 'b>
   |                          ^^
   |
   = help: use a more informative name

error: single-character lifetime names are likely uninformative
  --> tests/ui/single_char_lifetime_names.rs:16:6
   |
LL | impl<'a, 'b> DiagnosticCtx<'a, 'b> {
   |      ^^
   |
   = help: use a more informative name

error: single-character lifetime names are likely uninformative
  --> tests/ui/single_char_lifetime_names.rs:16:10
   |
LL | impl<'a, 'b> DiagnosticCtx<'a, 'b> {
   |          ^^
   |
   = help: use a more informative name

error: single-character lifetime names are likely uninformative
  --> tests/ui/single_char_lifetime_names.rs:38:15
   |
LL | fn split_once<'a>(base: &'a str, other: &'_ str) -> (&'a str, Option<&'a str>) {
   |               ^^
   |
   = help: use a more informative name

error: aborting due to 5 previous errors