error: this will panic at run-time if the environment variable doesn't exist at compile-time
  --> $DIR/option_env_unwrap.rs:18:13
   |
LL |     let _ = option_env!("PATH").unwrap();
   |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: `-D clippy::option-env-unwrap` implied by `-D warnings`
   = help: consider using the `env!` macro instead

error: this will panic at run-time if the environment variable doesn't exist at compile-time
  --> $DIR/option_env_unwrap.rs:19:13
   |
LL |     let _ = option_env!("PATH").expect("environment variable PATH isn't set");
   |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = help: consider using the `env!` macro instead

error: this will panic at run-time if the environment variable doesn't exist at compile-time
  --> $DIR/option_env_unwrap.rs:10:9
   |
LL |         option_env!($env).unwrap()
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
...
LL |     let _ = option_env_unwrap!("PATH");
   |             -------------------------- in this macro invocation
   |
   = help: consider using the `env!` macro instead
   = note: this error originates in the macro `option_env_unwrap` (in Nightly builds, run with -Z macro-backtrace for more info)

error: this will panic at run-time if the environment variable doesn't exist at compile-time
  --> $DIR/option_env_unwrap.rs:13:9
   |
LL |         option_env!($env).expect($message)
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
...
LL |     let _ = option_env_unwrap!("PATH", "environment variable PATH isn't set");
   |             ----------------------------------------------------------------- in this macro invocation
   |
   = help: consider using the `env!` macro instead
   = note: this error originates in the macro `option_env_unwrap` (in Nightly builds, run with -Z macro-backtrace for more info)

error: this will panic at run-time if the environment variable doesn't exist at compile-time
  --> $DIR/option_env_unwrap.rs:22:13
   |
LL |     let _ = option_env_unwrap_external!("PATH");
   |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = help: consider using the `env!` macro instead
   = note: this error originates in the macro `option_env_unwrap_external` (in Nightly builds, run with -Z macro-backtrace for more info)

error: this will panic at run-time if the environment variable doesn't exist at compile-time
  --> $DIR/option_env_unwrap.rs:23:13
   |
LL |     let _ = option_env_unwrap_external!("PATH", "environment variable PATH isn't set");
   |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = help: consider using the `env!` macro instead
   = note: this error originates in the macro `option_env_unwrap_external` (in Nightly builds, run with -Z macro-backtrace for more info)

error: aborting due to 6 previous errors