error[E0106]: missing lifetime specifier
  --> $DIR/return-elided-lifetime.rs:6:12
   |
LL | fn f1() -> &i32 { loop {} }
   |            ^ expected named lifetime parameter
   |
   = help: this function's return type contains a borrowed value, but there is no value for it to be borrowed from
help: consider using the `'static` lifetime, but this is uncommon unless you're returning a borrowed value from a `const` or a `static`
   |
LL | fn f1() -> &'static i32 { loop {} }
   |             +++++++
help: instead, you are more likely to want to return an owned value
   |
LL - fn f1() -> &i32 { loop {} }
LL + fn f1() -> i32 { loop {} }
   |

error[E0106]: missing lifetime specifiers
  --> $DIR/return-elided-lifetime.rs:8:14
   |
LL | fn f1_() -> (&i32, &i32) { loop {} }
   |              ^     ^ expected named lifetime parameter
   |              |
   |              expected named lifetime parameter
   |
   = help: this function's return type contains a borrowed value, but there is no value for it to be borrowed from
help: consider using the `'static` lifetime, but this is uncommon unless you're returning a borrowed value from a `const` or a `static`
   |
LL | fn f1_() -> (&'static i32, &'static i32) { loop {} }
   |               +++++++       +++++++

error[E0106]: missing lifetime specifier
  --> $DIR/return-elided-lifetime.rs:11:26
   |
LL | fn f2(a: i32, b: i32) -> &i32 { loop {} }
   |                          ^ expected named lifetime parameter
   |
   = help: this function's return type contains a borrowed value, but there is no value for it to be borrowed from
help: consider using the `'static` lifetime, but this is uncommon unless you're returning a borrowed value from a `const` or a `static`
   |
LL | fn f2(a: i32, b: i32) -> &'static i32 { loop {} }
   |                           +++++++
help: instead, you are more likely to want to change one of the arguments to be borrowed...
   |
LL | fn f2(a: &i32, b: &i32) -> &i32 { loop {} }
   |          +        +
help: ...or alternatively, you might want to return an owned value
   |
LL - fn f2(a: i32, b: i32) -> &i32 { loop {} }
LL + fn f2(a: i32, b: i32) -> i32 { loop {} }
   |

error[E0106]: missing lifetime specifiers
  --> $DIR/return-elided-lifetime.rs:13:28
   |
LL | fn f2_(a: i32, b: i32) -> (&i32, &i32) { loop {} }
   |                            ^     ^ expected named lifetime parameter
   |                            |
   |                            expected named lifetime parameter
   |
   = help: this function's return type contains a borrowed value, but there is no value for it to be borrowed from
help: consider using the `'static` lifetime, but this is uncommon unless you're returning a borrowed value from a `const` or a `static`
   |
LL | fn f2_(a: i32, b: i32) -> (&'static i32, &'static i32) { loop {} }
   |                             +++++++       +++++++

error[E0106]: missing lifetime specifier
  --> $DIR/return-elided-lifetime.rs:17:17
   |
LL | fn f3(s: &S) -> &i32 { loop {} }
   |          --     ^ expected named lifetime parameter
   |
   = help: this function's return type contains a borrowed value, but the signature does not say which one of `s`'s 3 lifetimes it is borrowed from
help: consider introducing a named lifetime parameter
   |
LL | fn f3<'a>(s: &'a S<'a, 'a>) -> &'a i32 { loop {} }
   |      ++++     ++  ++++++++      ++

error[E0106]: missing lifetime specifiers
  --> $DIR/return-elided-lifetime.rs:19:26
   |
LL | fn f3_(s: &S, t: &S) -> (&i32, &i32) { loop {} }
   |           --     --      ^     ^ expected named lifetime parameter
   |                          |
   |                          expected named lifetime parameter
   |
   = help: this function's return type contains a borrowed value, but the signature does not say whether it is borrowed from one of `s`'s 3 lifetimes or one of `t`'s 3 lifetimes
help: consider introducing a named lifetime parameter
   |
LL | fn f3_<'a>(s: &'a S<'a, 'a>, t: &'a S<'a, 'a>) -> (&'a i32, &'a i32) { loop {} }
   |       ++++     ++  ++++++++      ++  ++++++++       ++       ++

error[E0106]: missing lifetime specifier
  --> $DIR/return-elided-lifetime.rs:22:42
   |
LL | fn f4<'a, 'b>(a: &'a i32, b: &'b i32) -> &i32 { loop {} }
   |                  -------     -------     ^ expected named lifetime parameter
   |
   = help: this function's return type contains a borrowed value with an elided lifetime, but the lifetime cannot be derived from the arguments
note: these named lifetimes are available to use
  --> $DIR/return-elided-lifetime.rs:22:7
   |
LL | fn f4<'a, 'b>(a: &'a i32, b: &'b i32) -> &i32 { loop {} }
   |       ^^  ^^
help: consider using one of the available lifetimes here
   |
LL | fn f4<'a, 'b>(a: &'a i32, b: &'b i32) -> &'lifetime i32 { loop {} }
   |                                           +++++++++

error[E0106]: missing lifetime specifiers
  --> $DIR/return-elided-lifetime.rs:24:44
   |
LL | fn f4_<'a, 'b>(a: &'a i32, b: &'b i32) -> (&i32, &i32) { loop {} }
   |                   -------     -------      ^     ^ expected named lifetime parameter
   |                                            |
   |                                            expected named lifetime parameter
   |
   = help: this function's return type contains a borrowed value with an elided lifetime, but the lifetime cannot be derived from the arguments
note: these named lifetimes are available to use
  --> $DIR/return-elided-lifetime.rs:24:8
   |
LL | fn f4_<'a, 'b>(a: &'a i32, b: &'b i32) -> (&i32, &i32) { loop {} }
   |        ^^  ^^
help: consider using one of the available lifetimes here
   |
LL | fn f4_<'a, 'b>(a: &'a i32, b: &'b i32) -> (&'lifetime i32, &'lifetime i32) { loop {} }
   |                                             +++++++++       +++++++++

error[E0106]: missing lifetime specifier
  --> $DIR/return-elided-lifetime.rs:27:35
   |
LL | fn f5<'a>(a: &'a i32, b: &i32) -> &i32 { loop {} }
   |              -------     ----     ^ expected named lifetime parameter
   |
   = help: this function's return type contains a borrowed value, but the signature does not say whether it is borrowed from `a` or `b`
help: consider using the `'a` lifetime
   |
LL | fn f5<'a>(a: &'a i32, b: &i32) -> &'a i32 { loop {} }
   |                                    ++

error[E0106]: missing lifetime specifiers
  --> $DIR/return-elided-lifetime.rs:29:37
   |
LL | fn f5_<'a>(a: &'a i32, b: &i32) -> (&i32, &i32) { loop {} }
   |               -------     ----      ^     ^ expected named lifetime parameter
   |                                     |
   |                                     expected named lifetime parameter
   |
   = help: this function's return type contains a borrowed value, but the signature does not say whether it is borrowed from `a` or `b`
help: consider using the `'a` lifetime
   |
LL | fn f5_<'a>(a: &'a i32, b: &i32) -> (&'a i32, &'a i32) { loop {} }
   |                                      ++       ++

error: aborting due to 10 previous errors

For more information about this error, try `rustc --explain E0106`.