`cargo install --path .` on 'master' no longer compiles with newer Rust toolchains

Description:

Running cargo install --path . no longer compiles due to mismatched-lifetime-syntaxes being triggered.

How to reproduce:

run cargo install --path . with updated rust toolchain.

Expected behavior:

To compile.

Screenshots

error: hiding a lifetime that's elided elsewhere is confusing
  --> src/ui/edit_config.rs:67:30
   |
67 | pub fn mode_footer_text(app: &App) -> Vec<Span> {
   |                              ^^^^         ^^^^ the same lifetime is hidden here
   |                              |
   |                              the lifetime is elided here
   |
   = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
   = note: `-D mismatched-lifetime-syntaxes` implied by `-D warnings`
   = help: to override `-D warnings` add `#[allow(mismatched_lifetime_syntaxes)]`
help: use `'_` for type paths
   |
67 | pub fn mode_footer_text(app: &App) -> Vec<Span<'_>> {
   |                                               ++++

error: hiding a lifetime that's elided elsewhere is confusing
  --> src/ui/edit_config.rs:76:23
   |
76 | pub fn keys_hint(app: &App) -> Span {
   |                       ^^^^     ^^^^ the same lifetime is hidden here
   |                       |
   |                       the lifetime is elided here
   |
   = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
help: use `'_` for type paths
   |
76 | pub fn keys_hint(app: &App) -> Span<'_> {
   |                                    ++++

error: hiding a lifetime that's elided elsewhere is confusing
  --> src/ui/latest.rs:70:30
   |
70 | pub fn mode_footer_text(app: &App) -> Vec<Span> {
   |                              ^^^^         ^^^^ the same lifetime is hidden here
   |                              |
   |                              the lifetime is elided here
   |
   = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
help: use `'_` for type paths
   |
70 | pub fn mode_footer_text(app: &App) -> Vec<Span<'_>> {
   |                                               ++++

error: hiding a lifetime that's elided elsewhere is confusing
  --> src/ui/mail_list.rs:53:30
   |
53 | pub fn mode_footer_text(app: &App) -> Vec<Span> {
   |                              ^^^^         ^^^^ the same lifetime is hidden here
   |                              |
   |                              the lifetime is elided here
   |
   = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
help: use `'_` for type paths
   |
53 | pub fn mode_footer_text(app: &App) -> Vec<Span<'_>> {
   |                                               ++++

error: could not compile `patch-hub` (bin "patch-hub") due to 4 previous errors

Setup:

• Project branch: master
• Project commit hash: deba389

Start by running cargo install --path . with an updated Rust toolchain to reproduce the warnings. Review the affected signatures in src/ui/edit_config.rs, src/ui/latest.rs, and src/ui/mail_list.rs, then verify that the project compiles successfully with the same command and no mismatched-lifetime-syntaxes errors remain.