error[E0015]: cannot call non-const formatting macro in constant functions
  --> $DIR/format.rs:2:20
   |
LL |     panic!("{:?}", 0);
   |                    ^
   |
   = note: calls in constant functions are limited to constant functions, tuple structs and tuple variants
   = note: this error originates in the macro `$crate::const_format_args` which comes from the expansion of the macro `panic` (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0015]: cannot call non-const formatting macro in constant functions
  --> $DIR/format.rs:7:22
   |
LL |     println!("{:?}", 0);
   |                      ^
   |
   = note: calls in constant functions are limited to constant functions, tuple structs and tuple variants
   = note: this error originates in the macro `$crate::format_args_nl` which comes from the expansion of the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info)

error: `Arguments::<'a>::new_v1` is not yet stable as a const fn
  --> $DIR/format.rs:7:5
   |
LL |     println!("{:?}", 0);
   |     ^^^^^^^^^^^^^^^^^^^
   |
   = help: add `#![feature(const_fmt_arguments_new)]` to the crate attributes to enable
   = note: this error originates in the macro `$crate::format_args_nl` which comes from the expansion of the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0015]: cannot call non-const fn `_print` in constant functions
  --> $DIR/format.rs:7:5
   |
LL |     println!("{:?}", 0);
   |     ^^^^^^^^^^^^^^^^^^^
   |
   = note: calls in constant functions are limited to constant functions, tuple structs and tuple variants
   = note: this error originates in the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info)

note: erroneous constant used
  --> $DIR/format.rs:2:12
   |
LL |     panic!("{:?}", 0);
   |            ^^^^^^

note: erroneous constant used
  --> $DIR/format.rs:2:12
   |
LL |     panic!("{:?}", 0);
   |            ^^^^^^

note: erroneous constant used
  --> $DIR/format.rs:2:20
   |
LL |     panic!("{:?}", 0);
   |                    ^
   |
   = note: this note originates in the macro `$crate::const_format_args` which comes from the expansion of the macro `panic` (in Nightly builds, run with -Z macro-backtrace for more info)

note: erroneous constant used
  --> $DIR/format.rs:2:20
   |
LL |     panic!("{:?}", 0);
   |                    ^
   |
   = note: this note originates in the macro `$crate::const_format_args` which comes from the expansion of the macro `panic` (in Nightly builds, run with -Z macro-backtrace for more info)

note: erroneous constant used
  --> $DIR/format.rs:7:14
   |
LL |     println!("{:?}", 0);
   |              ^^^^^^

note: erroneous constant used
  --> $DIR/format.rs:7:14
   |
LL |     println!("{:?}", 0);
   |              ^^^^^^

note: erroneous constant used
  --> $DIR/format.rs:7:22
   |
LL |     println!("{:?}", 0);
   |                      ^
   |
   = note: this note originates in the macro `$crate::format_args_nl` which comes from the expansion of the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info)

note: erroneous constant used
  --> $DIR/format.rs:7:22
   |
LL |     println!("{:?}", 0);
   |                      ^
   |
   = note: this note originates in the macro `$crate::format_args_nl` which comes from the expansion of the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info)

error: aborting due to 4 previous errors

For more information about this error, try `rustc --explain E0015`.