warning: lifetime flowing from input to output with different syntax can be confusing
       --> src/error.rs:489:18
        |
    489 |     pub fn chain(&self) -> Chain {
        |                  ^^^^^     ----- the lifetime gets resolved as `'_`
        |                  |
        |                  this lifetime flows to the output
        |
        = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
    help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
        |
    489 |     pub fn chain(&self) -> Chain<'_> {
        |                                 ++++

    warning: lifetime flowing from input to output with different syntax can be confusing
        --> src/error.rs:1082:14
         |
    1082 |     fn erase(&self) -> Ref<ErrorImpl> {
         |              ^^^^^     -------------- the lifetime gets resolved as `'_`
         |              |
         |              this lifetime flows to the output
         |
    help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
         |
    1082 |     fn erase(&self) -> Ref<'_, ErrorImpl> {
         |                            +++

    warning: lifetime flowing from input to output with different syntax can be confusing
        --> src/error.rs:1091:38
         |
    1091 |     pub(crate) unsafe fn error(this: Ref<Self>) -> &(dyn StdError + Send + Sync + 'static) {
         |                                      ^^^^^^^^^     --------------------------------------- the lifetime gets resolved as `'_`
         |                                      |
         |                                      this lifetime flows to the output
         |
    help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
         |
    1091 |     pub(crate) unsafe fn error(this: Ref<'_, Self>) -> &(dyn StdError + Send + Sync + 'static) {
         |                                          +++

    warning: lifetime flowing from input to output with different syntax can be confusing
        --> src/error.rs:1098:42
         |
    1098 |     pub(crate) unsafe fn error_mut(this: Mut<Self>) -> &mut (dyn StdError + Send + Sync + 'static) {
         |                                          ^^^^^^^^^     ------------------------------------------- the lifetime gets resolved as `'_`
         |                                          |
         |                                          this lifetime flows to the output
         |
    help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
         |
    1098 |     pub(crate) unsafe fn error_mut(this: Mut<'_, Self>) -> &mut (dyn StdError + Send + Sync + 'static) {
         |                                              +++

    warning: lifetime flowing from input to output with different syntax can be confusing
        --> src/error.rs:1114:42
         |
    1114 |     pub(crate) unsafe fn backtrace(this: Ref<Self>) -> &Backtrace {
         |                                          ^^^^^^^^^     ---------- the lifetime gets resolved as `'_`
         |                                          |
         |                                          this lifetime flows to the output
         |
    help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
         |
    1114 |     pub(crate) unsafe fn backtrace(this: Ref<'_, Self>) -> &Backtrace {
         |                                              +++

    warning: lifetime flowing from input to output with different syntax can be confusing
      --> src/ptr.rs:48:19
       |
    48 |     pub fn by_ref(&self) -> Ref<T> {
       |                   ^^^^^     ------ the lifetime gets resolved as `'_`
       |                   |
       |                   this lifetime flows to the output
       |
    help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
       |
    48 |     pub fn by_ref(&self) -> Ref<'_, T> {
       |                                 +++

    warning: lifetime flowing from input to output with different syntax can be confusing
      --> src/ptr.rs:55:19
       |
    55 |     pub fn by_mut(&mut self) -> Mut<T> {
       |                   ^^^^^^^^^     ------ the lifetime gets resolved as `'_`
       |                   |
       |                   this lifetime flows to the output
       |
    help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
       |
    55 |     pub fn by_mut(&mut self) -> Mut<'_, T> {
       |                                     +++

This reverts commit 11f0e81.

…non-fatal

Allow build-script cleanup failure with NFSv3 output directory to be non-fatal