error[E0759]: `v` has an anonymous lifetime `'_` but it needs to satisfy a `'static` lifetime requirement
  --> $DIR/region-object-lifetime-in-coercion.rs:8:46
   |
LL | fn a(v: &[u8]) -> Box<dyn Foo + 'static> {
   |         ----- this data with an anonymous lifetime `'_`...
LL |     let x: Box<dyn Foo + 'static> = Box::new(v);
   |                                              ^ ...is captured here, requiring it to live as long as `'static`
   |
help: consider changing the trait object's explicit `'static` bound to the lifetime of argument `v`
   |
LL | fn a(v: &[u8]) -> Box<dyn Foo + '_> {
   |                                 ~~
help: alternatively, add an explicit `'static` bound to this reference
   |
LL | fn a(v: &'static [u8]) -> Box<dyn Foo + 'static> {
   |         ~~~~~~~~~~~~~

error[E0759]: `v` has an anonymous lifetime `'_` but it needs to satisfy a `'static` lifetime requirement
  --> $DIR/region-object-lifetime-in-coercion.rs:13:14
   |
LL | fn b(v: &[u8]) -> Box<dyn Foo + 'static> {
   |         ----- this data with an anonymous lifetime `'_`...
LL |     Box::new(v)
   |              ^ ...is captured here, requiring it to live as long as `'static`
   |
help: consider changing the trait object's explicit `'static` bound to the lifetime of argument `v`
   |
LL | fn b(v: &[u8]) -> Box<dyn Foo + '_> {
   |                                 ~~
help: alternatively, add an explicit `'static` bound to this reference
   |
LL | fn b(v: &'static [u8]) -> Box<dyn Foo + 'static> {
   |         ~~~~~~~~~~~~~

error[E0759]: `v` has an anonymous lifetime `'_` but it needs to satisfy a `'static` lifetime requirement
  --> $DIR/region-object-lifetime-in-coercion.rs:19:14
   |
LL | fn c(v: &[u8]) -> Box<dyn Foo> {
   |         ----- this data with an anonymous lifetime `'_`...
...
LL |     Box::new(v)
   |              ^ ...is captured here, requiring it to live as long as `'static`
   |
help: to declare that the trait object captures data from argument `v`, you can add an explicit `'_` lifetime bound
   |
LL | fn c(v: &[u8]) -> Box<dyn Foo + '_> {
   |                               ++++

error[E0495]: cannot infer an appropriate lifetime due to conflicting requirements
  --> $DIR/region-object-lifetime-in-coercion.rs:23:14
   |
LL |     Box::new(v)
   |              ^
   |
note: first, the lifetime cannot outlive the lifetime `'a` as defined on the function body at 22:6...
  --> $DIR/region-object-lifetime-in-coercion.rs:22:6
   |
LL | fn d<'a,'b>(v: &'a [u8]) -> Box<dyn Foo+'b> {
   |      ^^
note: ...so that the expression is assignable
  --> $DIR/region-object-lifetime-in-coercion.rs:23:14
   |
LL |     Box::new(v)
   |              ^
   = note: expected `&[u8]`
              found `&'a [u8]`
note: but, the lifetime must be valid for the lifetime `'b` as defined on the function body at 22:9...
  --> $DIR/region-object-lifetime-in-coercion.rs:22:9
   |
LL | fn d<'a,'b>(v: &'a [u8]) -> Box<dyn Foo+'b> {
   |         ^^
note: ...so that the types are compatible
  --> $DIR/region-object-lifetime-in-coercion.rs:23:5
   |
LL |     Box::new(v)
   |     ^^^^^^^^^^^
   = note: expected `Box<(dyn Foo + 'b)>`
              found `Box<dyn Foo>`

error: aborting due to 4 previous errors

Some errors have detailed explanations: E0495, E0759.
For more information about an error, try `rustc --explain E0495`.