ビルド時のライフタイム省略に関する警告について

[kyutaze]

事象

cargo buildまたはcargo build --release実行時に、以下のメッセージが出力されます：

warning: hiding a lifetime that's elided elsewhere is confusing
  --> src\bin\colmsg\app.rs:45:30
   |
45 |     pub fn sakurazaka_config(&self) -> Result<Config<SClient>> {
   |                              ^^^^^            ^^^^^^^^^^^^^^^ 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: `#[warn(mismatched_lifetime_syntaxes)]` on by default
help: use `'_` for type paths
   |
45 |     pub fn sakurazaka_config(&self) -> Result<Config<'_, SClient>> {
   |                                                      +++

warning: hiding a lifetime that's elided elsewhere is confusing
  --> src\bin\colmsg\app.rs:50:30
   |
50 |     pub fn hinatazaka_config(&self) -> Result<Config<HClient>> {
   |                              ^^^^^            ^^^^^^^^^^^^^^^ 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
   |
50 |     pub fn hinatazaka_config(&self) -> Result<Config<'_, HClient>> {
   |                                                      +++

warning: hiding a lifetime that's elided elsewhere is confusing
  --> src\bin\colmsg\app.rs:55:28
   |
55 |     pub fn nogizaka_config(&self) -> Result<Config<NClient>> {
   |                            ^^^^^            ^^^^^^^^^^^^^^^ 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
   |
55 |     pub fn nogizaka_config(&self) -> Result<Config<'_, NClient>> {
   |                                                    +++

warning: hiding a lifetime that's elided elsewhere is confusing
  --> src\bin\colmsg\app.rs:60:30
   |
60 |     pub fn asukasaito_config(&self) -> Result<Config<AClient>> {
   |                              ^^^^^            ^^^^^^^^^^^^^^^ 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
   |
60 |     pub fn asukasaito_config(&self) -> Result<Config<'_, AClient>> {
   |                                                      +++

warning: hiding a lifetime that's elided elsewhere is confusing
  --> src\bin\colmsg\app.rs:65:32
   |
65 |     pub fn maishiraishi_config(&self) -> Result<Config<MClient>> {
   |                                ^^^^^            ^^^^^^^^^^^^^^^ the same lifetime is hidden here
   |                                |
   |                                the lifetime is elided 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
   |
65 |     pub fn maishiraishi_config(&self) -> Result<Config<'_, MClient>> {
   |                                                        +++

warning: hiding a lifetime that's elided elsewhere is confusing
  --> src\bin\colmsg\app.rs:70:25
   |
70 |     pub fn yodel_config(&self) -> Result<Config<YClient>> {
   |                         ^^^^^            ^^^^^^^^^^^^^^^ 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 yodel_config(&self) -> Result<Config<'_, YClient>> {
   |                                                 +++

warning: hiding a lifetime that's elided elsewhere is confusing
  --> src\bin\colmsg\app.rs:75:44
   |
75 |     fn config<S: AsRef<str>, C: SHNClient>(&self, refresh_token_str: S, client: C) -> Result<Config<C>> {
   |                                            ^^^^^ the lifetime is elided here                 ^^^^^^^^^ the same lifetime is hidden here
   |
   = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
help: use `'_` for type paths
   |
75 |     fn config<S: AsRef<str>, C: SHNClient>(&self, refresh_token_str: S, client: C) -> Result<Config<'_, C>> {
   |                                                                                                     +++

環境

• OS: Windows 11
• Rustバージョン: rustc 1.92.0 (ded5c06cf 2025-12-08)
• colmsgバージョン: d50f3d2

補足

生成された colmsg.exe は問題なく動作します。