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 --> $DIR/format.rs:11:22 | LL | println!("{:?}", 0); | ^ | = note: calls in constant functions are limited to constant functions, tuple structs and tuple variants = note: this error originates in the macro `$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 --> $DIR/format.rs:11:5 | LL | println!("{:?}", 0); | ^^^^^^^^^^^^^^^^^^^ | = help: add `#![feature(const_fmt_arguments_new)]` to the crate attributes to enable = note: this error originates in the macro `$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:11:5 | 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) error: erroneous constant used --> $DIR/format.rs:2:12 | LL | panic!("{:?}", 0); | ^^^^^^ referenced constant has errors | = note: `#[deny(const_err)]` on by default = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! = note: for more information, see issue #71800 error: erroneous constant used --> $DIR/format.rs:2:20 | LL | panic!("{:?}", 0); | ^ referenced constant has errors | = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! = note: for more information, see issue #71800 = note: this error originates in the macro `$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: erroneous constant used --> $DIR/format.rs:11:14 | LL | println!("{:?}", 0); | ^^^^^^ referenced constant has errors | = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! = note: for more information, see issue #71800 error: erroneous constant used --> $DIR/format.rs:11:22 | LL | println!("{:?}", 0); | ^ referenced constant has errors | = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! = note: for more information, see issue #71800 = note: this error originates in the macro `$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: aborting due to 8 previous errors For more information about this error, try `rustc --explain E0015`. Future incompatibility report: Future breakage diagnostic: error: erroneous constant used --> $DIR/format.rs:2:12 | LL | panic!("{:?}", 0); | ^^^^^^ referenced constant has errors | = note: `#[deny(const_err)]` on by default = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! = note: for more information, see issue #71800 Future breakage diagnostic: error: erroneous constant used --> $DIR/format.rs:2:20 | LL | panic!("{:?}", 0); | ^ referenced constant has errors | = note: `#[deny(const_err)]` on by default = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! = note: for more information, see issue #71800 = note: this error originates in the macro `$crate::const_format_args` which comes from the expansion of the macro `panic` (in Nightly builds, run with -Z macro-backtrace for more info) Future breakage diagnostic: error: erroneous constant used --> $DIR/format.rs:11:14 | LL | println!("{:?}", 0); | ^^^^^^ referenced constant has errors | = note: `#[deny(const_err)]` on by default = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! = note: for more information, see issue #71800 Future breakage diagnostic: error: erroneous constant used --> $DIR/format.rs:11:22 | LL | println!("{:?}", 0); | ^ referenced constant has errors | = note: `#[deny(const_err)]` on by default = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! = note: for more information, see issue #71800 = note: this error originates in the macro `$crate::format_args_nl` which comes from the expansion of the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info)