error: cstring literals must not contain NUL characters
 --> <source attribute>:1:6
       "cr#\"\0\"#) }}"
 --> tests/ui/raw-prefix.rs:9:14
  |
9 |     source = "{{ z!(cr#\"\0\"#) }}",
  |              ^^^^^^^^^^^^^^^^^^^^^^

error: cstring literals must not contain NUL characters
 --> <source attribute>:1:6
       "cr##\"\0\"##) }}"
  --> tests/ui/raw-prefix.rs:16:14
   |
16 |     source = "{{ z!(cr##\"\0\"##) }}",
   |              ^^^^^^^^^^^^^^^^^^^^^^^^

error: cstring literals must not contain NUL characters
 --> <source attribute>:1:6
       "cr###\"\0\"###) }}"
  --> tests/ui/raw-prefix.rs:23:14
   |
23 |     source = "{{ z!(cr###\"\0\"###) }}",
   |              ^^^^^^^^^^^^^^^^^^^^^^^^^^

error: binary string literals must not contain non-ASCII characters
 --> <source attribute>:1:6
       "br#\"😶\u{200d}🌫\u{fe0f}\"#) }}"
  --> tests/ui/raw-prefix.rs:32:14
   |
32 |     source = "{{ z!(br#\"😶🌫️\"#) }}",
   |              ^^^^^^^^^^^^^^^^^^^^^^^

error: binary string literals must not contain non-ASCII characters
 --> <source attribute>:1:6
       "br##\"😶\u{200d}🌫\u{fe0f}\"##) }}"
  --> tests/ui/raw-prefix.rs:39:14
   |
39 |     source = "{{ z!(br##\"😶🌫️\"##) }}",
   |              ^^^^^^^^^^^^^^^^^^^^^^^^^

error: binary string literals must not contain non-ASCII characters
 --> <source attribute>:1:6
       "br###\"😶\u{200d}🌫\u{fe0f}\"###) }}"
  --> tests/ui/raw-prefix.rs:46:14
   |
46 |     source = "{{ z!(br###\"😶🌫️\"###) }}",
   |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: reserved prefix `br#`, only `r#` is allowed with raw identifiers
 --> <source attribute>:1:6
       "br#async) }}"
  --> tests/ui/raw-prefix.rs:55:14
   |
55 |     source = "{{ z!(br#async) }}",
   |              ^^^^^^^^^^^^^^^^^^^^

error: reserved prefix `cr#`, only `r#` is allowed with raw identifiers
 --> <source attribute>:1:6
       "cr#async) }}"
  --> tests/ui/raw-prefix.rs:62:14
   |
62 |     source = "{{ z!(cr#async) }}",
   |              ^^^^^^^^^^^^^^^^^^^^

error: only one `#` is allowed in raw identifier delimitation
 --> <source attribute>:1:6
       "r##async) }}"
  --> tests/ui/raw-prefix.rs:69:14
   |
69 |     source = "{{ z!(r##async) }}",
   |              ^^^^^^^^^^^^^^^^^^^^

error: reserved prefix `br#`, only `r#` is allowed with raw identifiers
 --> <source attribute>:1:6
       "br##async) }}"
  --> tests/ui/raw-prefix.rs:76:14
   |
76 |     source = "{{ z!(br##async) }}",
   |              ^^^^^^^^^^^^^^^^^^^^^

error: reserved prefix `cr#`, only `r#` is allowed with raw identifiers
 --> <source attribute>:1:6
       "cr##async) }}"
  --> tests/ui/raw-prefix.rs:83:14
   |
83 |     source = "{{ z!(cr##async) }}",
   |              ^^^^^^^^^^^^^^^^^^^^^

error: reserved prefix `hello#`
 --> <source attribute>:1:6
       "hello#world) }}"
  --> tests/ui/raw-prefix.rs:90:14
   |
90 |     source = "{{ z!(hello#world) }}",
   |              ^^^^^^^^^^^^^^^^^^^^^^^

error: reserved prefix `hello#`
 --> <source attribute>:1:6
       "hello##world) }}"
  --> tests/ui/raw-prefix.rs:97:14
   |
97 |     source = "{{ z!(hello##world) }}",
   |              ^^^^^^^^^^^^^^^^^^^^^^^^

error: a maximum of 255 hashes `#` are allowed with raw strings
 --> testing/templates/macro-call-raw-string-many-hashes.html:1:6
       "hello###########################################################################"...
   --> tests/ui/raw-prefix.rs:105:19
    |
105 | #[template(path = "macro-call-raw-string-many-hashes.html")]
    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^