error: expected expression, found `let` statement
  --> $DIR/disallowed-positions.rs:29:9
   |
LL |     if (let 0 = 1) {}
   |         ^^^

error: expected expression, found `let` statement
  --> $DIR/disallowed-positions.rs:33:11
   |
LL |     if (((let 0 = 1))) {}
   |           ^^^

error: expected expression, found `let` statement
  --> $DIR/disallowed-positions.rs:37:9
   |
LL |     if (let 0 = 1) && true {}
   |         ^^^

error: expected expression, found `let` statement
  --> $DIR/disallowed-positions.rs:41:17
   |
LL |     if true && (let 0 = 1) {}
   |                 ^^^

error: expected expression, found `let` statement
  --> $DIR/disallowed-positions.rs:45:9
   |
LL |     if (let 0 = 1) && (let 0 = 1) {}
   |         ^^^

error: expected expression, found `let` statement
  --> $DIR/disallowed-positions.rs:45:24
   |
LL |     if (let 0 = 1) && (let 0 = 1) {}
   |                        ^^^

error: expected expression, found `let` statement
  --> $DIR/disallowed-positions.rs:51:35
   |
LL |     if let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = 5) {}
   |                                   ^^^

error: expected expression, found `let` statement
  --> $DIR/disallowed-positions.rs:51:48
   |
LL |     if let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = 5) {}
   |                                                ^^^

error: expected expression, found `let` statement
  --> $DIR/disallowed-positions.rs:51:61
   |
LL |     if let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = 5) {}
   |                                                             ^^^

error: expected expression, found `let` statement
  --> $DIR/disallowed-positions.rs:61:12
   |
LL |     while (let 0 = 1) {}
   |            ^^^

error: expected expression, found `let` statement
  --> $DIR/disallowed-positions.rs:65:14
   |
LL |     while (((let 0 = 1))) {}
   |              ^^^

error: expected expression, found `let` statement
  --> $DIR/disallowed-positions.rs:69:12
   |
LL |     while (let 0 = 1) && true {}
   |            ^^^

error: expected expression, found `let` statement
  --> $DIR/disallowed-positions.rs:73:20
   |
LL |     while true && (let 0 = 1) {}
   |                    ^^^

error: expected expression, found `let` statement
  --> $DIR/disallowed-positions.rs:77:12
   |
LL |     while (let 0 = 1) && (let 0 = 1) {}
   |            ^^^

error: expected expression, found `let` statement
  --> $DIR/disallowed-positions.rs:77:27
   |
LL |     while (let 0 = 1) && (let 0 = 1) {}
   |                           ^^^

error: expected expression, found `let` statement
  --> $DIR/disallowed-positions.rs:83:38
   |
LL |     while let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = 5) {}
   |                                      ^^^

error: expected expression, found `let` statement
  --> $DIR/disallowed-positions.rs:83:51
   |
LL |     while let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = 5) {}
   |                                                   ^^^

error: expected expression, found `let` statement
  --> $DIR/disallowed-positions.rs:83:64
   |
LL |     while let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = 5) {}
   |                                                                ^^^

error: expected expression, found `let` statement
  --> $DIR/disallowed-positions.rs:110:9
   |
LL |     if &let 0 = 0 {}
   |         ^^^

error: expected expression, found `let` statement
  --> $DIR/disallowed-positions.rs:115:9
   |
LL |     if !let 0 = 0 {}
   |         ^^^

error: expected expression, found `let` statement
  --> $DIR/disallowed-positions.rs:118:9
   |
LL |     if *let 0 = 0 {}
   |         ^^^

error: expected expression, found `let` statement
  --> $DIR/disallowed-positions.rs:122:9
   |
LL |     if -let 0 = 0 {}
   |         ^^^

error: expected expression, found `let` statement
  --> $DIR/disallowed-positions.rs:132:9
   |
LL |     if (let 0 = 0)? {}
   |         ^^^

error: expected expression, found `let` statement
  --> $DIR/disallowed-positions.rs:138:16
   |
LL |     if true || let 0 = 0 {}
   |                ^^^

error: expected expression, found `let` statement
  --> $DIR/disallowed-positions.rs:141:17
   |
LL |     if (true || let 0 = 0) {}
   |                 ^^^

error: expected expression, found `let` statement
  --> $DIR/disallowed-positions.rs:144:25
   |
LL |     if true && (true || let 0 = 0) {}
   |                         ^^^

error: expected expression, found `let` statement
  --> $DIR/disallowed-positions.rs:147:25
   |
LL |     if true || (true && let 0 = 0) {}
   |                         ^^^

error: expected expression, found `let` statement
  --> $DIR/disallowed-positions.rs:152:12
   |
LL |     if x = let 0 = 0 {}
   |            ^^^

error: expected expression, found `let` statement
  --> $DIR/disallowed-positions.rs:157:15
   |
LL |     if true..(let 0 = 0) {}
   |               ^^^

error: expected expression, found `let` statement
  --> $DIR/disallowed-positions.rs:161:11
   |
LL |     if ..(let 0 = 0) {}
   |           ^^^

error: expected expression, found `let` statement
  --> $DIR/disallowed-positions.rs:165:9
   |
LL |     if (let 0 = 0).. {}
   |         ^^^

error: expected expression, found `let` statement
  --> $DIR/disallowed-positions.rs:196:19
   |
LL |     if let true = let true = true {}
   |                   ^^^

error: expected expression, found `let` statement
  --> $DIR/disallowed-positions.rs:202:12
   |
LL |     while &let 0 = 0 {}
   |            ^^^

error: expected expression, found `let` statement
  --> $DIR/disallowed-positions.rs:207:12
   |
LL |     while !let 0 = 0 {}
   |            ^^^

error: expected expression, found `let` statement
  --> $DIR/disallowed-positions.rs:210:12
   |
LL |     while *let 0 = 0 {}
   |            ^^^

error: expected expression, found `let` statement
  --> $DIR/disallowed-positions.rs:214:12
   |
LL |     while -let 0 = 0 {}
   |            ^^^

error: expected expression, found `let` statement
  --> $DIR/disallowed-positions.rs:224:12
   |
LL |     while (let 0 = 0)? {}
   |            ^^^

error: expected expression, found `let` statement
  --> $DIR/disallowed-positions.rs:230:19
   |
LL |     while true || let 0 = 0 {}
   |                   ^^^

error: expected expression, found `let` statement
  --> $DIR/disallowed-positions.rs:233:20
   |
LL |     while (true || let 0 = 0) {}
   |                    ^^^

error: expected expression, found `let` statement
  --> $DIR/disallowed-positions.rs:236:28
   |
LL |     while true && (true || let 0 = 0) {}
   |                            ^^^

error: expected expression, found `let` statement
  --> $DIR/disallowed-positions.rs:239:28
   |
LL |     while true || (true && let 0 = 0) {}
   |                            ^^^

error: expected expression, found `let` statement
  --> $DIR/disallowed-positions.rs:244:15
   |
LL |     while x = let 0 = 0 {}
   |               ^^^

error: expected expression, found `let` statement
  --> $DIR/disallowed-positions.rs:249:18
   |
LL |     while true..(let 0 = 0) {}
   |                  ^^^

error: expected expression, found `let` statement
  --> $DIR/disallowed-positions.rs:253:14
   |
LL |     while ..(let 0 = 0) {}
   |              ^^^

error: expected expression, found `let` statement
  --> $DIR/disallowed-positions.rs:257:12
   |
LL |     while (let 0 = 0).. {}
   |            ^^^

error: expected expression, found `let` statement
  --> $DIR/disallowed-positions.rs:288:22
   |
LL |     while let true = let true = true {}
   |                      ^^^

error: expected expression, found `let` statement
  --> $DIR/disallowed-positions.rs:304:6
   |
LL |     &let 0 = 0;
   |      ^^^

error: expected expression, found `let` statement
  --> $DIR/disallowed-positions.rs:308:6
   |
LL |     !let 0 = 0;
   |      ^^^

error: expected expression, found `let` statement
  --> $DIR/disallowed-positions.rs:311:6
   |
LL |     *let 0 = 0;
   |      ^^^

error: expected expression, found `let` statement
  --> $DIR/disallowed-positions.rs:315:6
   |
LL |     -let 0 = 0;
   |      ^^^

error: expected expression, found `let` statement
  --> $DIR/disallowed-positions.rs:325:6
   |
LL |     (let 0 = 0)?;
   |      ^^^

error: expected expression, found `let` statement
  --> $DIR/disallowed-positions.rs:331:13
   |
LL |     true || let 0 = 0;
   |             ^^^

error: expected expression, found `let` statement
  --> $DIR/disallowed-positions.rs:334:14
   |
LL |     (true || let 0 = 0);
   |              ^^^

error: expected expression, found `let` statement
  --> $DIR/disallowed-positions.rs:337:22
   |
LL |     true && (true || let 0 = 0);
   |                      ^^^

error: expected expression, found `let` statement
  --> $DIR/disallowed-positions.rs:342:9
   |
LL |     x = let 0 = 0;
   |         ^^^

error: expected expression, found `let` statement
  --> $DIR/disallowed-positions.rs:346:12
   |
LL |     true..(let 0 = 0);
   |            ^^^

error: expected expression, found `let` statement
  --> $DIR/disallowed-positions.rs:349:8
   |
LL |     ..(let 0 = 0);
   |        ^^^

error: expected expression, found `let` statement
  --> $DIR/disallowed-positions.rs:352:6
   |
LL |     (let 0 = 0)..;
   |      ^^^

error: expected expression, found `let` statement
  --> $DIR/disallowed-positions.rs:356:6
   |
LL |     (let Range { start: _, end: _ } = true..true || false);
   |      ^^^

error: expected expression, found `let` statement
  --> $DIR/disallowed-positions.rs:361:6
   |
LL |     (let true = let true = true);
   |      ^^^

error: expected expression, found `let` statement
  --> $DIR/disallowed-positions.rs:361:17
   |
LL |     (let true = let true = true);
   |                 ^^^

error: expected expression, found `let` statement
  --> $DIR/disallowed-positions.rs:368:25
   |
LL |         let x = true && let y = 1;
   |                         ^^^

error: expected expression, found `let` statement
  --> $DIR/disallowed-positions.rs:374:19
   |
LL |         [1, 2, 3][let _ = ()]
   |                   ^^^

error: expected expression, found `let` statement
  --> $DIR/disallowed-positions.rs:379:6
   |
LL |     &let 0 = 0
   |      ^^^

error: expected expression, found `let` statement
  --> $DIR/disallowed-positions.rs:391:17
   |
LL |         true && let 1 = 1
   |                 ^^^

error: expected expression, found `let` statement
  --> $DIR/disallowed-positions.rs:397:17
   |
LL |         true && let 1 = 1
   |                 ^^^

error: expected expression, found `let` statement
  --> $DIR/disallowed-positions.rs:403:17
   |
LL |         true && let 1 = 1
   |                 ^^^

error: expected expression, found `let` statement
  --> $DIR/disallowed-positions.rs:415:17
   |
LL |         true && let 1 = 1
   |                 ^^^

error: expressions must be enclosed in braces to be used as const generic arguments
  --> $DIR/disallowed-positions.rs:415:9
   |
LL |         true && let 1 = 1
   |         ^^^^^^^^^^^^^^^^^
   |
help: enclose the `const` expression in braces
   |
LL |         { true && let 1 = 1 }
   |         +                   +

error: expected expression, found `let` statement
  --> $DIR/disallowed-positions.rs:425:9
   |
LL |     if (let Some(a) = opt && true) {
   |         ^^^

error: expected expression, found `let` statement
  --> $DIR/disallowed-positions.rs:430:9
   |
LL |     if (let Some(a) = opt) && true {
   |         ^^^

error: expected expression, found `let` statement
  --> $DIR/disallowed-positions.rs:434:9
   |
LL |     if (let Some(a) = opt) && (let Some(b) = a) {
   |         ^^^

error: expected expression, found `let` statement
  --> $DIR/disallowed-positions.rs:434:32
   |
LL |     if (let Some(a) = opt) && (let Some(b) = a) {
   |                                ^^^

error: expected expression, found `let` statement
  --> $DIR/disallowed-positions.rs:443:9
   |
LL |     if (let Some(a) = opt && (let Some(b) = a)) && b == 1 {
   |         ^^^

error: expected expression, found `let` statement
  --> $DIR/disallowed-positions.rs:443:31
   |
LL |     if (let Some(a) = opt && (let Some(b) = a)) && b == 1 {
   |                               ^^^

error: expected expression, found `let` statement
  --> $DIR/disallowed-positions.rs:449:9
   |
LL |     if (let Some(a) = opt && (let Some(b) = a)) && true {
   |         ^^^

error: expected expression, found `let` statement
  --> $DIR/disallowed-positions.rs:449:31
   |
LL |     if (let Some(a) = opt && (let Some(b) = a)) && true {
   |                               ^^^

error: expected expression, found `let` statement
  --> $DIR/disallowed-positions.rs:455:9
   |
LL |     if (let Some(a) = opt && (true)) && true {
   |         ^^^

error: expected expression, found `let` statement
  --> $DIR/disallowed-positions.rs:472:22
   |
LL |     let x = (true && let y = 1);
   |                      ^^^

error: expected expression, found `let` statement
  --> $DIR/disallowed-positions.rs:477:20
   |
LL |         ([1, 2, 3][let _ = ()])
   |                    ^^^

error: expected expression, found `let` statement
  --> $DIR/disallowed-positions.rs:99:16
   |
LL |     use_expr!((let 0 = 1 && 0 == 0));
   |                ^^^

error: expected expression, found `let` statement
  --> $DIR/disallowed-positions.rs:103:16
   |
LL |     use_expr!((let 0 = 1));
   |                ^^^

error: `let` expressions are not supported here
  --> $DIR/disallowed-positions.rs:29:9
   |
LL |     if (let 0 = 1) {}
   |         ^^^^^^^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions
note: `let`s wrapped in parentheses are not supported in a context with let chains
  --> $DIR/disallowed-positions.rs:29:9
   |
LL |     if (let 0 = 1) {}
   |         ^^^^^^^^^

error: `let` expressions are not supported here
  --> $DIR/disallowed-positions.rs:33:11
   |
LL |     if (((let 0 = 1))) {}
   |           ^^^^^^^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions
note: `let`s wrapped in parentheses are not supported in a context with let chains
  --> $DIR/disallowed-positions.rs:33:11
   |
LL |     if (((let 0 = 1))) {}
   |           ^^^^^^^^^

error: `let` expressions are not supported here
  --> $DIR/disallowed-positions.rs:37:9
   |
LL |     if (let 0 = 1) && true {}
   |         ^^^^^^^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions
note: `let`s wrapped in parentheses are not supported in a context with let chains
  --> $DIR/disallowed-positions.rs:37:9
   |
LL |     if (let 0 = 1) && true {}
   |         ^^^^^^^^^

error: `let` expressions are not supported here
  --> $DIR/disallowed-positions.rs:41:17
   |
LL |     if true && (let 0 = 1) {}
   |                 ^^^^^^^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions
note: `let`s wrapped in parentheses are not supported in a context with let chains
  --> $DIR/disallowed-positions.rs:41:17
   |
LL |     if true && (let 0 = 1) {}
   |                 ^^^^^^^^^

error: `let` expressions are not supported here
  --> $DIR/disallowed-positions.rs:45:9
   |
LL |     if (let 0 = 1) && (let 0 = 1) {}
   |         ^^^^^^^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions
note: `let`s wrapped in parentheses are not supported in a context with let chains
  --> $DIR/disallowed-positions.rs:45:9
   |
LL |     if (let 0 = 1) && (let 0 = 1) {}
   |         ^^^^^^^^^

error: `let` expressions are not supported here
  --> $DIR/disallowed-positions.rs:45:24
   |
LL |     if (let 0 = 1) && (let 0 = 1) {}
   |                        ^^^^^^^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions
note: `let`s wrapped in parentheses are not supported in a context with let chains
  --> $DIR/disallowed-positions.rs:45:24
   |
LL |     if (let 0 = 1) && (let 0 = 1) {}
   |                        ^^^^^^^^^

error: `let` expressions are not supported here
  --> $DIR/disallowed-positions.rs:51:35
   |
LL |     if let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = 5) {}
   |                                   ^^^^^^^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions
note: `let`s wrapped in parentheses are not supported in a context with let chains
  --> $DIR/disallowed-positions.rs:51:35
   |
LL |     if let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = 5) {}
   |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: `let` expressions are not supported here
  --> $DIR/disallowed-positions.rs:51:48
   |
LL |     if let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = 5) {}
   |                                                ^^^^^^^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions
note: `let`s wrapped in parentheses are not supported in a context with let chains
  --> $DIR/disallowed-positions.rs:51:35
   |
LL |     if let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = 5) {}
   |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: `let` expressions are not supported here
  --> $DIR/disallowed-positions.rs:51:61
   |
LL |     if let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = 5) {}
   |                                                             ^^^^^^^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions
note: `let`s wrapped in parentheses are not supported in a context with let chains
  --> $DIR/disallowed-positions.rs:51:35
   |
LL |     if let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = 5) {}
   |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: `let` expressions are not supported here
  --> $DIR/disallowed-positions.rs:61:12
   |
LL |     while (let 0 = 1) {}
   |            ^^^^^^^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions
note: `let`s wrapped in parentheses are not supported in a context with let chains
  --> $DIR/disallowed-positions.rs:61:12
   |
LL |     while (let 0 = 1) {}
   |            ^^^^^^^^^

error: `let` expressions are not supported here
  --> $DIR/disallowed-positions.rs:65:14
   |
LL |     while (((let 0 = 1))) {}
   |              ^^^^^^^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions
note: `let`s wrapped in parentheses are not supported in a context with let chains
  --> $DIR/disallowed-positions.rs:65:14
   |
LL |     while (((let 0 = 1))) {}
   |              ^^^^^^^^^

error: `let` expressions are not supported here
  --> $DIR/disallowed-positions.rs:69:12
   |
LL |     while (let 0 = 1) && true {}
   |            ^^^^^^^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions
note: `let`s wrapped in parentheses are not supported in a context with let chains
  --> $DIR/disallowed-positions.rs:69:12
   |
LL |     while (let 0 = 1) && true {}
   |            ^^^^^^^^^

error: `let` expressions are not supported here
  --> $DIR/disallowed-positions.rs:73:20
   |
LL |     while true && (let 0 = 1) {}
   |                    ^^^^^^^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions
note: `let`s wrapped in parentheses are not supported in a context with let chains
  --> $DIR/disallowed-positions.rs:73:20
   |
LL |     while true && (let 0 = 1) {}
   |                    ^^^^^^^^^

error: `let` expressions are not supported here
  --> $DIR/disallowed-positions.rs:77:12
   |
LL |     while (let 0 = 1) && (let 0 = 1) {}
   |            ^^^^^^^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions
note: `let`s wrapped in parentheses are not supported in a context with let chains
  --> $DIR/disallowed-positions.rs:77:12
   |
LL |     while (let 0 = 1) && (let 0 = 1) {}
   |            ^^^^^^^^^

error: `let` expressions are not supported here
  --> $DIR/disallowed-positions.rs:77:27
   |
LL |     while (let 0 = 1) && (let 0 = 1) {}
   |                           ^^^^^^^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions
note: `let`s wrapped in parentheses are not supported in a context with let chains
  --> $DIR/disallowed-positions.rs:77:27
   |
LL |     while (let 0 = 1) && (let 0 = 1) {}
   |                           ^^^^^^^^^

error: `let` expressions are not supported here
  --> $DIR/disallowed-positions.rs:83:38
   |
LL |     while let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = 5) {}
   |                                      ^^^^^^^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions
note: `let`s wrapped in parentheses are not supported in a context with let chains
  --> $DIR/disallowed-positions.rs:83:38
   |
LL |     while let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = 5) {}
   |                                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: `let` expressions are not supported here
  --> $DIR/disallowed-positions.rs:83:51
   |
LL |     while let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = 5) {}
   |                                                   ^^^^^^^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions
note: `let`s wrapped in parentheses are not supported in a context with let chains
  --> $DIR/disallowed-positions.rs:83:38
   |
LL |     while let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = 5) {}
   |                                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: `let` expressions are not supported here
  --> $DIR/disallowed-positions.rs:83:64
   |
LL |     while let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = 5) {}
   |                                                                ^^^^^^^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions
note: `let`s wrapped in parentheses are not supported in a context with let chains
  --> $DIR/disallowed-positions.rs:83:38
   |
LL |     while let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = 5) {}
   |                                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: `let` expressions are not supported here
  --> $DIR/disallowed-positions.rs:99:16
   |
LL |     use_expr!((let 0 = 1 && 0 == 0));
   |                ^^^^^^^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions
note: `let`s wrapped in parentheses are not supported in a context with let chains
  --> $DIR/disallowed-positions.rs:99:16
   |
LL |     use_expr!((let 0 = 1 && 0 == 0));
   |                ^^^^^^^^^^^^^^^^^^^

error: `let` expressions are not supported here
  --> $DIR/disallowed-positions.rs:99:16
   |
LL |     use_expr!((let 0 = 1 && 0 == 0));
   |                ^^^^^^^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions
note: `let`s wrapped in parentheses are not supported in a context with let chains
  --> $DIR/disallowed-positions.rs:99:16
   |
LL |     use_expr!((let 0 = 1 && 0 == 0));
   |                ^^^^^^^^^^^^^^^^^^^

error: `let` expressions are not supported here
  --> $DIR/disallowed-positions.rs:103:16
   |
LL |     use_expr!((let 0 = 1));
   |                ^^^^^^^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions
note: `let`s wrapped in parentheses are not supported in a context with let chains
  --> $DIR/disallowed-positions.rs:103:16
   |
LL |     use_expr!((let 0 = 1));
   |                ^^^^^^^^^

error: `let` expressions are not supported here
  --> $DIR/disallowed-positions.rs:103:16
   |
LL |     use_expr!((let 0 = 1));
   |                ^^^^^^^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions
note: `let`s wrapped in parentheses are not supported in a context with let chains
  --> $DIR/disallowed-positions.rs:103:16
   |
LL |     use_expr!((let 0 = 1));
   |                ^^^^^^^^^

error: `let` expressions are not supported here
  --> $DIR/disallowed-positions.rs:110:9
   |
LL |     if &let 0 = 0 {}
   |         ^^^^^^^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions

error: `let` expressions are not supported here
  --> $DIR/disallowed-positions.rs:115:9
   |
LL |     if !let 0 = 0 {}
   |         ^^^^^^^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions

error: `let` expressions are not supported here
  --> $DIR/disallowed-positions.rs:118:9
   |
LL |     if *let 0 = 0 {}
   |         ^^^^^^^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions

error: `let` expressions are not supported here
  --> $DIR/disallowed-positions.rs:122:9
   |
LL |     if -let 0 = 0 {}
   |         ^^^^^^^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions

error: `let` expressions are not supported here
  --> $DIR/disallowed-positions.rs:132:9
   |
LL |     if (let 0 = 0)? {}
   |         ^^^^^^^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions
note: `let`s wrapped in parentheses are not supported in a context with let chains
  --> $DIR/disallowed-positions.rs:132:9
   |
LL |     if (let 0 = 0)? {}
   |         ^^^^^^^^^

error: `let` expressions are not supported here
  --> $DIR/disallowed-positions.rs:138:16
   |
LL |     if true || let 0 = 0 {}
   |                ^^^^^^^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions
note: `||` operators are not supported in let chain expressions
  --> $DIR/disallowed-positions.rs:138:13
   |
LL |     if true || let 0 = 0 {}
   |             ^^

error: `let` expressions are not supported here
  --> $DIR/disallowed-positions.rs:141:17
   |
LL |     if (true || let 0 = 0) {}
   |                 ^^^^^^^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions
note: `||` operators are not supported in let chain expressions
  --> $DIR/disallowed-positions.rs:141:14
   |
LL |     if (true || let 0 = 0) {}
   |              ^^

error: `let` expressions are not supported here
  --> $DIR/disallowed-positions.rs:144:25
   |
LL |     if true && (true || let 0 = 0) {}
   |                         ^^^^^^^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions
note: `||` operators are not supported in let chain expressions
  --> $DIR/disallowed-positions.rs:144:22
   |
LL |     if true && (true || let 0 = 0) {}
   |                      ^^

error: `let` expressions are not supported here
  --> $DIR/disallowed-positions.rs:147:25
   |
LL |     if true || (true && let 0 = 0) {}
   |                         ^^^^^^^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions
note: `let`s wrapped in parentheses are not supported in a context with let chains
  --> $DIR/disallowed-positions.rs:147:17
   |
LL |     if true || (true && let 0 = 0) {}
   |                 ^^^^^^^^^^^^^^^^^

error: `let` expressions are not supported here
  --> $DIR/disallowed-positions.rs:152:12
   |
LL |     if x = let 0 = 0 {}
   |            ^^^^^^^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions

error: `let` expressions are not supported here
  --> $DIR/disallowed-positions.rs:157:15
   |
LL |     if true..(let 0 = 0) {}
   |               ^^^^^^^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions
note: `let`s wrapped in parentheses are not supported in a context with let chains
  --> $DIR/disallowed-positions.rs:157:15
   |
LL |     if true..(let 0 = 0) {}
   |               ^^^^^^^^^

error: `let` expressions are not supported here
  --> $DIR/disallowed-positions.rs:161:11
   |
LL |     if ..(let 0 = 0) {}
   |           ^^^^^^^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions
note: `let`s wrapped in parentheses are not supported in a context with let chains
  --> $DIR/disallowed-positions.rs:161:11
   |
LL |     if ..(let 0 = 0) {}
   |           ^^^^^^^^^

error: `let` expressions are not supported here
  --> $DIR/disallowed-positions.rs:165:9
   |
LL |     if (let 0 = 0).. {}
   |         ^^^^^^^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions
note: `let`s wrapped in parentheses are not supported in a context with let chains
  --> $DIR/disallowed-positions.rs:165:9
   |
LL |     if (let 0 = 0).. {}
   |         ^^^^^^^^^

error: `let` expressions are not supported here
  --> $DIR/disallowed-positions.rs:171:8
   |
LL |     if let Range { start: _, end: _ } = true..true && false {}
   |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions

error: `let` expressions are not supported here
  --> $DIR/disallowed-positions.rs:175:8
   |
LL |     if let Range { start: _, end: _ } = true..true || false {}
   |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions

error: `let` expressions are not supported here
  --> $DIR/disallowed-positions.rs:182:8
   |
LL |     if let Range { start: F, end } = F..|| true {}
   |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions

error: `let` expressions are not supported here
  --> $DIR/disallowed-positions.rs:190:8
   |
LL |     if let Range { start: true, end } = t..&&false {}
   |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions

error: `let` expressions are not supported here
  --> $DIR/disallowed-positions.rs:196:19
   |
LL |     if let true = let true = true {}
   |                   ^^^^^^^^^^^^^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions

error: `let` expressions are not supported here
  --> $DIR/disallowed-positions.rs:202:12
   |
LL |     while &let 0 = 0 {}
   |            ^^^^^^^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions

error: `let` expressions are not supported here
  --> $DIR/disallowed-positions.rs:207:12
   |
LL |     while !let 0 = 0 {}
   |            ^^^^^^^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions

error: `let` expressions are not supported here
  --> $DIR/disallowed-positions.rs:210:12
   |
LL |     while *let 0 = 0 {}
   |            ^^^^^^^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions

error: `let` expressions are not supported here
  --> $DIR/disallowed-positions.rs:214:12
   |
LL |     while -let 0 = 0 {}
   |            ^^^^^^^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions

error: `let` expressions are not supported here
  --> $DIR/disallowed-positions.rs:224:12
   |
LL |     while (let 0 = 0)? {}
   |            ^^^^^^^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions
note: `let`s wrapped in parentheses are not supported in a context with let chains
  --> $DIR/disallowed-positions.rs:224:12
   |
LL |     while (let 0 = 0)? {}
   |            ^^^^^^^^^

error: `let` expressions are not supported here
  --> $DIR/disallowed-positions.rs:230:19
   |
LL |     while true || let 0 = 0 {}
   |                   ^^^^^^^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions
note: `||` operators are not supported in let chain expressions
  --> $DIR/disallowed-positions.rs:230:16
   |
LL |     while true || let 0 = 0 {}
   |                ^^

error: `let` expressions are not supported here
  --> $DIR/disallowed-positions.rs:233:20
   |
LL |     while (true || let 0 = 0) {}
   |                    ^^^^^^^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions
note: `||` operators are not supported in let chain expressions
  --> $DIR/disallowed-positions.rs:233:17
   |
LL |     while (true || let 0 = 0) {}
   |                 ^^

error: `let` expressions are not supported here
  --> $DIR/disallowed-positions.rs:236:28
   |
LL |     while true && (true || let 0 = 0) {}
   |                            ^^^^^^^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions
note: `||` operators are not supported in let chain expressions
  --> $DIR/disallowed-positions.rs:236:25
   |
LL |     while true && (true || let 0 = 0) {}
   |                         ^^

error: `let` expressions are not supported here
  --> $DIR/disallowed-positions.rs:239:28
   |
LL |     while true || (true && let 0 = 0) {}
   |                            ^^^^^^^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions
note: `let`s wrapped in parentheses are not supported in a context with let chains
  --> $DIR/disallowed-positions.rs:239:20
   |
LL |     while true || (true && let 0 = 0) {}
   |                    ^^^^^^^^^^^^^^^^^

error: `let` expressions are not supported here
  --> $DIR/disallowed-positions.rs:244:15
   |
LL |     while x = let 0 = 0 {}
   |               ^^^^^^^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions

error: `let` expressions are not supported here
  --> $DIR/disallowed-positions.rs:249:18
   |
LL |     while true..(let 0 = 0) {}
   |                  ^^^^^^^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions
note: `let`s wrapped in parentheses are not supported in a context with let chains
  --> $DIR/disallowed-positions.rs:249:18
   |
LL |     while true..(let 0 = 0) {}
   |                  ^^^^^^^^^

error: `let` expressions are not supported here
  --> $DIR/disallowed-positions.rs:253:14
   |
LL |     while ..(let 0 = 0) {}
   |              ^^^^^^^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions
note: `let`s wrapped in parentheses are not supported in a context with let chains
  --> $DIR/disallowed-positions.rs:253:14
   |
LL |     while ..(let 0 = 0) {}
   |              ^^^^^^^^^

error: `let` expressions are not supported here
  --> $DIR/disallowed-positions.rs:257:12
   |
LL |     while (let 0 = 0).. {}
   |            ^^^^^^^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions
note: `let`s wrapped in parentheses are not supported in a context with let chains
  --> $DIR/disallowed-positions.rs:257:12
   |
LL |     while (let 0 = 0).. {}
   |            ^^^^^^^^^

error: `let` expressions are not supported here
  --> $DIR/disallowed-positions.rs:263:11
   |
LL |     while let Range { start: _, end: _ } = true..true && false {}
   |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions

error: `let` expressions are not supported here
  --> $DIR/disallowed-positions.rs:267:11
   |
LL |     while let Range { start: _, end: _ } = true..true || false {}
   |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions

error: `let` expressions are not supported here
  --> $DIR/disallowed-positions.rs:274:11
   |
LL |     while let Range { start: F, end } = F..|| true {}
   |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions

error: `let` expressions are not supported here
  --> $DIR/disallowed-positions.rs:282:11
   |
LL |     while let Range { start: true, end } = t..&&false {}
   |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions

error: `let` expressions are not supported here
  --> $DIR/disallowed-positions.rs:288:22
   |
LL |     while let true = let true = true {}
   |                      ^^^^^^^^^^^^^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions

error: `let` expressions are not supported here
  --> $DIR/disallowed-positions.rs:304:6
   |
LL |     &let 0 = 0;
   |      ^^^^^^^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions

error: `let` expressions are not supported here
  --> $DIR/disallowed-positions.rs:308:6
   |
LL |     !let 0 = 0;
   |      ^^^^^^^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions

error: `let` expressions are not supported here
  --> $DIR/disallowed-positions.rs:311:6
   |
LL |     *let 0 = 0;
   |      ^^^^^^^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions

error: `let` expressions are not supported here
  --> $DIR/disallowed-positions.rs:315:6
   |
LL |     -let 0 = 0;
   |      ^^^^^^^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions

error: `let` expressions are not supported here
  --> $DIR/disallowed-positions.rs:325:6
   |
LL |     (let 0 = 0)?;
   |      ^^^^^^^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions
note: `let`s wrapped in parentheses are not supported in a context with let chains
  --> $DIR/disallowed-positions.rs:325:6
   |
LL |     (let 0 = 0)?;
   |      ^^^^^^^^^

error: `let` expressions are not supported here
  --> $DIR/disallowed-positions.rs:331:13
   |
LL |     true || let 0 = 0;
   |             ^^^^^^^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions
note: `||` operators are not supported in let chain expressions
  --> $DIR/disallowed-positions.rs:331:10
   |
LL |     true || let 0 = 0;
   |          ^^

error: `let` expressions are not supported here
  --> $DIR/disallowed-positions.rs:334:14
   |
LL |     (true || let 0 = 0);
   |              ^^^^^^^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions
note: `||` operators are not supported in let chain expressions
  --> $DIR/disallowed-positions.rs:334:11
   |
LL |     (true || let 0 = 0);
   |           ^^

error: `let` expressions are not supported here
  --> $DIR/disallowed-positions.rs:337:22
   |
LL |     true && (true || let 0 = 0);
   |                      ^^^^^^^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions
note: `||` operators are not supported in let chain expressions
  --> $DIR/disallowed-positions.rs:337:19
   |
LL |     true && (true || let 0 = 0);
   |                   ^^

error: `let` expressions are not supported here
  --> $DIR/disallowed-positions.rs:342:9
   |
LL |     x = let 0 = 0;
   |         ^^^^^^^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions

error: `let` expressions are not supported here
  --> $DIR/disallowed-positions.rs:346:12
   |
LL |     true..(let 0 = 0);
   |            ^^^^^^^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions
note: `let`s wrapped in parentheses are not supported in a context with let chains
  --> $DIR/disallowed-positions.rs:346:12
   |
LL |     true..(let 0 = 0);
   |            ^^^^^^^^^

error: `let` expressions are not supported here
  --> $DIR/disallowed-positions.rs:349:8
   |
LL |     ..(let 0 = 0);
   |        ^^^^^^^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions
note: `let`s wrapped in parentheses are not supported in a context with let chains
  --> $DIR/disallowed-positions.rs:349:8
   |
LL |     ..(let 0 = 0);
   |        ^^^^^^^^^

error: `let` expressions are not supported here
  --> $DIR/disallowed-positions.rs:352:6
   |
LL |     (let 0 = 0)..;
   |      ^^^^^^^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions
note: `let`s wrapped in parentheses are not supported in a context with let chains
  --> $DIR/disallowed-positions.rs:352:6
   |
LL |     (let 0 = 0)..;
   |      ^^^^^^^^^

error: `let` expressions are not supported here
  --> $DIR/disallowed-positions.rs:356:6
   |
LL |     (let Range { start: _, end: _ } = true..true || false);
   |      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions

error: `let` expressions are not supported here
  --> $DIR/disallowed-positions.rs:361:6
   |
LL |     (let true = let true = true);
   |      ^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions
note: `let`s wrapped in parentheses are not supported in a context with let chains
  --> $DIR/disallowed-positions.rs:361:6
   |
LL |     (let true = let true = true);
   |      ^^^^^^^^^^^^^^^^^^^^^^^^^^

error: `let` expressions are not supported here
  --> $DIR/disallowed-positions.rs:379:6
   |
LL |     &let 0 = 0
   |      ^^^^^^^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions

error: `let` expressions are not supported here
  --> $DIR/disallowed-positions.rs:391:17
   |
LL |         true && let 1 = 1
   |                 ^^^^^^^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions

error: `let` expressions are not supported here
  --> $DIR/disallowed-positions.rs:397:17
   |
LL |         true && let 1 = 1
   |                 ^^^^^^^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions

error: `let` expressions are not supported here
  --> $DIR/disallowed-positions.rs:403:17
   |
LL |         true && let 1 = 1
   |                 ^^^^^^^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions

error: `let` expressions are not supported here
  --> $DIR/disallowed-positions.rs:415:17
   |
LL |         true && let 1 = 1
   |                 ^^^^^^^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions

error: `let` expressions are not supported here
  --> $DIR/disallowed-positions.rs:425:9
   |
LL |     if (let Some(a) = opt && true) {
   |         ^^^^^^^^^^^^^^^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions
note: `let`s wrapped in parentheses are not supported in a context with let chains
  --> $DIR/disallowed-positions.rs:425:9
   |
LL |     if (let Some(a) = opt && true) {
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^

error: `let` expressions are not supported here
  --> $DIR/disallowed-positions.rs:430:9
   |
LL |     if (let Some(a) = opt) && true {
   |         ^^^^^^^^^^^^^^^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions
note: `let`s wrapped in parentheses are not supported in a context with let chains
  --> $DIR/disallowed-positions.rs:430:9
   |
LL |     if (let Some(a) = opt) && true {
   |         ^^^^^^^^^^^^^^^^^

error: `let` expressions are not supported here
  --> $DIR/disallowed-positions.rs:434:9
   |
LL |     if (let Some(a) = opt) && (let Some(b) = a) {
   |         ^^^^^^^^^^^^^^^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions
note: `let`s wrapped in parentheses are not supported in a context with let chains
  --> $DIR/disallowed-positions.rs:434:9
   |
LL |     if (let Some(a) = opt) && (let Some(b) = a) {
   |         ^^^^^^^^^^^^^^^^^

error: `let` expressions are not supported here
  --> $DIR/disallowed-positions.rs:434:32
   |
LL |     if (let Some(a) = opt) && (let Some(b) = a) {
   |                                ^^^^^^^^^^^^^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions
note: `let`s wrapped in parentheses are not supported in a context with let chains
  --> $DIR/disallowed-positions.rs:434:32
   |
LL |     if (let Some(a) = opt) && (let Some(b) = a) {
   |                                ^^^^^^^^^^^^^^^

error: `let` expressions are not supported here
  --> $DIR/disallowed-positions.rs:443:9
   |
LL |     if (let Some(a) = opt && (let Some(b) = a)) && b == 1 {
   |         ^^^^^^^^^^^^^^^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions
note: `let`s wrapped in parentheses are not supported in a context with let chains
  --> $DIR/disallowed-positions.rs:443:9
   |
LL |     if (let Some(a) = opt && (let Some(b) = a)) && b == 1 {
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: `let` expressions are not supported here
  --> $DIR/disallowed-positions.rs:443:31
   |
LL |     if (let Some(a) = opt && (let Some(b) = a)) && b == 1 {
   |                               ^^^^^^^^^^^^^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions
note: `let`s wrapped in parentheses are not supported in a context with let chains
  --> $DIR/disallowed-positions.rs:443:31
   |
LL |     if (let Some(a) = opt && (let Some(b) = a)) && b == 1 {
   |                               ^^^^^^^^^^^^^^^

error: `let` expressions are not supported here
  --> $DIR/disallowed-positions.rs:449:9
   |
LL |     if (let Some(a) = opt && (let Some(b) = a)) && true {
   |         ^^^^^^^^^^^^^^^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions
note: `let`s wrapped in parentheses are not supported in a context with let chains
  --> $DIR/disallowed-positions.rs:449:9
   |
LL |     if (let Some(a) = opt && (let Some(b) = a)) && true {
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: `let` expressions are not supported here
  --> $DIR/disallowed-positions.rs:449:31
   |
LL |     if (let Some(a) = opt && (let Some(b) = a)) && true {
   |                               ^^^^^^^^^^^^^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions
note: `let`s wrapped in parentheses are not supported in a context with let chains
  --> $DIR/disallowed-positions.rs:449:31
   |
LL |     if (let Some(a) = opt && (let Some(b) = a)) && true {
   |                               ^^^^^^^^^^^^^^^

error: `let` expressions are not supported here
  --> $DIR/disallowed-positions.rs:455:9
   |
LL |     if (let Some(a) = opt && (true)) && true {
   |         ^^^^^^^^^^^^^^^^^
   |
   = note: only supported directly in conditions of `if` and `while` expressions
note: `let`s wrapped in parentheses are not supported in a context with let chains
  --> $DIR/disallowed-positions.rs:455:9
   |
LL |     if (let Some(a) = opt && (true)) && true {
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^

error[E0308]: mismatched types
  --> $DIR/disallowed-positions.rs:110:8
   |
LL |     if &let 0 = 0 {}
   |        ^^^^^^^^^^ expected `bool`, found `&bool`
   |
help: consider removing the borrow
   |
LL -     if &let 0 = 0 {}
LL +     if let 0 = 0 {}
   |

error[E0614]: type `bool` cannot be dereferenced
  --> $DIR/disallowed-positions.rs:118:8
   |
LL |     if *let 0 = 0 {}
   |        ^^^^^^^^^^

error[E0600]: cannot apply unary operator `-` to type `bool`
  --> $DIR/disallowed-positions.rs:122:8
   |
LL |     if -let 0 = 0 {}
   |        ^^^^^^^^^^ cannot apply unary operator `-`

error[E0277]: the `?` operator can only be applied to values that implement `Try`
  --> $DIR/disallowed-positions.rs:132:8
   |
LL |     if (let 0 = 0)? {}
   |        ^^^^^^^^^^^^ the `?` operator cannot be applied to type `bool`
   |
   = help: the trait `Try` is not implemented for `bool`

error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `FromResidual`)
  --> $DIR/disallowed-positions.rs:132:19
   |
LL | fn nested_within_if_expr() {
   | -------------------------- this function should return `Result` or `Option` to accept `?`
...
LL |     if (let 0 = 0)? {}
   |                   ^ cannot use the `?` operator in a function that returns `()`
   |
   = help: the trait `FromResidual<_>` is not implemented for `()`

error[E0308]: mismatched types
  --> $DIR/disallowed-positions.rs:152:8
   |
LL |     if x = let 0 = 0 {}
   |        ^^^^^^^^^^^^^ expected `bool`, found `()`
   |
help: you might have meant to compare for equality
   |
LL |     if x == let 0 = 0 {}
   |           +

error[E0308]: mismatched types
  --> $DIR/disallowed-positions.rs:157:8
   |
LL |     if true..(let 0 = 0) {}
   |        ^^^^^^^^^^^^^^^^^ expected `bool`, found struct `Range`
   |
   = note: expected type `bool`
            found struct `std::ops::Range<bool>`

error[E0308]: mismatched types
  --> $DIR/disallowed-positions.rs:161:8
   |
LL |     if ..(let 0 = 0) {}
   |        ^^^^^^^^^^^^^ expected `bool`, found struct `RangeTo`
   |
   = note: expected type `bool`
            found struct `RangeTo<bool>`

error[E0308]: mismatched types
  --> $DIR/disallowed-positions.rs:165:8
   |
LL |     if (let 0 = 0).. {}
   |        ^^^^^^^^^^^^^ expected `bool`, found struct `RangeFrom`
   |
   = note: expected type `bool`
            found struct `RangeFrom<bool>`

error[E0308]: mismatched types
  --> $DIR/disallowed-positions.rs:171:12
   |
LL |     if let Range { start: _, end: _ } = true..true && false {}
   |            ^^^^^^^^^^^^^^^^^^^^^^^^^^   ---- this expression has type `bool`
   |            |
   |            expected `bool`, found struct `Range`
   |
   = note: expected type `bool`
            found struct `std::ops::Range<_>`

error[E0308]: mismatched types
  --> $DIR/disallowed-positions.rs:171:8
   |
LL |     if let Range { start: _, end: _ } = true..true && false {}
   |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `bool`, found struct `Range`
   |
   = note: expected type `bool`
            found struct `std::ops::Range<bool>`

error[E0308]: mismatched types
  --> $DIR/disallowed-positions.rs:175:12
   |
LL |     if let Range { start: _, end: _ } = true..true || false {}
   |            ^^^^^^^^^^^^^^^^^^^^^^^^^^   ---- this expression has type `bool`
   |            |
   |            expected `bool`, found struct `Range`
   |
   = note: expected type `bool`
            found struct `std::ops::Range<_>`

error[E0308]: mismatched types
  --> $DIR/disallowed-positions.rs:175:8
   |
LL |     if let Range { start: _, end: _ } = true..true || false {}
   |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `bool`, found struct `Range`
   |
   = note: expected type `bool`
            found struct `std::ops::Range<bool>`

error[E0308]: mismatched types
  --> $DIR/disallowed-positions.rs:182:12
   |
LL |     if let Range { start: F, end } = F..|| true {}
   |            ^^^^^^^^^^^^^^^^^^^^^^^   - this expression has type `fn() -> bool`
   |            |
   |            expected fn pointer, found struct `Range`
   |
   = note: expected fn pointer `fn() -> bool`
                  found struct `std::ops::Range<_>`

error[E0308]: mismatched types
  --> $DIR/disallowed-positions.rs:182:41
   |
LL |     if let Range { start: F, end } = F..|| true {}
   |                                         ^^^^^^^ expected `bool`, found closure
   |
   = note: expected type `bool`
           found closure `[closure@$DIR/disallowed-positions.rs:182:41: 182:43]`
help: use parentheses to call this closure
   |
LL |     if let Range { start: F, end } = F..(|| true)() {}
   |                                         +       +++

error[E0308]: mismatched types
  --> $DIR/disallowed-positions.rs:182:8
   |
LL |     if let Range { start: F, end } = F..|| true {}
   |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `bool`, found struct `Range`
   |
   = note: expected type `bool`
            found struct `std::ops::Range<bool>`

error[E0308]: mismatched types
  --> $DIR/disallowed-positions.rs:190:12
   |
LL |     if let Range { start: true, end } = t..&&false {}
   |            ^^^^^^^^^^^^^^^^^^^^^^^^^^   - this expression has type `&&bool`
   |            |
   |            expected `bool`, found struct `Range`
   |
   = note: expected type `bool`
            found struct `std::ops::Range<_>`

error[E0308]: mismatched types
  --> $DIR/disallowed-positions.rs:190:44
   |
LL |     if let Range { start: true, end } = t..&&false {}
   |                                            ^^^^^^^ expected `bool`, found `&&bool`
   |
help: consider removing the `&&`
   |
LL -     if let Range { start: true, end } = t..&&false {}
LL +     if let Range { start: true, end } = t..false {}
   |

error[E0308]: mismatched types
  --> $DIR/disallowed-positions.rs:190:8
   |
LL |     if let Range { start: true, end } = t..&&false {}
   |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `bool`, found struct `Range`
   |
   = note: expected type `bool`
            found struct `std::ops::Range<bool>`

error[E0277]: the `?` operator can only be applied to values that implement `Try`
  --> $DIR/disallowed-positions.rs:128:20
   |
LL |         if let 0 = 0? {}
   |                    ^^ the `?` operator cannot be applied to type `{integer}`
   |
   = help: the trait `Try` is not implemented for `{integer}`

error[E0308]: mismatched types
  --> $DIR/disallowed-positions.rs:202:11
   |
LL |     while &let 0 = 0 {}
   |           ^^^^^^^^^^ expected `bool`, found `&bool`
   |
help: consider removing the borrow
   |
LL -     while &let 0 = 0 {}
LL +     while let 0 = 0 {}
   |

error[E0614]: type `bool` cannot be dereferenced
  --> $DIR/disallowed-positions.rs:210:11
   |
LL |     while *let 0 = 0 {}
   |           ^^^^^^^^^^

error[E0600]: cannot apply unary operator `-` to type `bool`
  --> $DIR/disallowed-positions.rs:214:11
   |
LL |     while -let 0 = 0 {}
   |           ^^^^^^^^^^ cannot apply unary operator `-`

error[E0277]: the `?` operator can only be applied to values that implement `Try`
  --> $DIR/disallowed-positions.rs:224:11
   |
LL |     while (let 0 = 0)? {}
   |           ^^^^^^^^^^^^ the `?` operator cannot be applied to type `bool`
   |
   = help: the trait `Try` is not implemented for `bool`

error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `FromResidual`)
  --> $DIR/disallowed-positions.rs:224:22
   |
LL | fn nested_within_while_expr() {
   | ----------------------------- this function should return `Result` or `Option` to accept `?`
...
LL |     while (let 0 = 0)? {}
   |                      ^ cannot use the `?` operator in a function that returns `()`
   |
   = help: the trait `FromResidual<_>` is not implemented for `()`

error[E0308]: mismatched types
  --> $DIR/disallowed-positions.rs:244:11
   |
LL |     while x = let 0 = 0 {}
   |           ^^^^^^^^^^^^^ expected `bool`, found `()`
   |
help: you might have meant to compare for equality
   |
LL |     while x == let 0 = 0 {}
   |              +

error[E0308]: mismatched types
  --> $DIR/disallowed-positions.rs:249:11
   |
LL |     while true..(let 0 = 0) {}
   |           ^^^^^^^^^^^^^^^^^ expected `bool`, found struct `Range`
   |
   = note: expected type `bool`
            found struct `std::ops::Range<bool>`

error[E0308]: mismatched types
  --> $DIR/disallowed-positions.rs:253:11
   |
LL |     while ..(let 0 = 0) {}
   |           ^^^^^^^^^^^^^ expected `bool`, found struct `RangeTo`
   |
   = note: expected type `bool`
            found struct `RangeTo<bool>`

error[E0308]: mismatched types
  --> $DIR/disallowed-positions.rs:257:11
   |
LL |     while (let 0 = 0).. {}
   |           ^^^^^^^^^^^^^ expected `bool`, found struct `RangeFrom`
   |
   = note: expected type `bool`
            found struct `RangeFrom<bool>`

error[E0308]: mismatched types
  --> $DIR/disallowed-positions.rs:263:15
   |
LL |     while let Range { start: _, end: _ } = true..true && false {}
   |               ^^^^^^^^^^^^^^^^^^^^^^^^^^   ---- this expression has type `bool`
   |               |
   |               expected `bool`, found struct `Range`
   |
   = note: expected type `bool`
            found struct `std::ops::Range<_>`

error[E0308]: mismatched types
  --> $DIR/disallowed-positions.rs:263:11
   |
LL |     while let Range { start: _, end: _ } = true..true && false {}
   |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `bool`, found struct `Range`
   |
   = note: expected type `bool`
            found struct `std::ops::Range<bool>`

error[E0308]: mismatched types
  --> $DIR/disallowed-positions.rs:267:15
   |
LL |     while let Range { start: _, end: _ } = true..true || false {}
   |               ^^^^^^^^^^^^^^^^^^^^^^^^^^   ---- this expression has type `bool`
   |               |
   |               expected `bool`, found struct `Range`
   |
   = note: expected type `bool`
            found struct `std::ops::Range<_>`

error[E0308]: mismatched types
  --> $DIR/disallowed-positions.rs:267:11
   |
LL |     while let Range { start: _, end: _ } = true..true || false {}
   |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `bool`, found struct `Range`
   |
   = note: expected type `bool`
            found struct `std::ops::Range<bool>`

error[E0308]: mismatched types
  --> $DIR/disallowed-positions.rs:274:15
   |
LL |     while let Range { start: F, end } = F..|| true {}
   |               ^^^^^^^^^^^^^^^^^^^^^^^   - this expression has type `fn() -> bool`
   |               |
   |               expected fn pointer, found struct `Range`
   |
   = note: expected fn pointer `fn() -> bool`
                  found struct `std::ops::Range<_>`

error[E0308]: mismatched types
  --> $DIR/disallowed-positions.rs:274:44
   |
LL |     while let Range { start: F, end } = F..|| true {}
   |                                            ^^^^^^^ expected `bool`, found closure
   |
   = note: expected type `bool`
           found closure `[closure@$DIR/disallowed-positions.rs:274:44: 274:46]`
help: use parentheses to call this closure
   |
LL |     while let Range { start: F, end } = F..(|| true)() {}
   |                                            +       +++

error[E0308]: mismatched types
  --> $DIR/disallowed-positions.rs:274:11
   |
LL |     while let Range { start: F, end } = F..|| true {}
   |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `bool`, found struct `Range`
   |
   = note: expected type `bool`
            found struct `std::ops::Range<bool>`

error[E0308]: mismatched types
  --> $DIR/disallowed-positions.rs:282:15
   |
LL |     while let Range { start: true, end } = t..&&false {}
   |               ^^^^^^^^^^^^^^^^^^^^^^^^^^   - this expression has type `&&bool`
   |               |
   |               expected `bool`, found struct `Range`
   |
   = note: expected type `bool`
            found struct `std::ops::Range<_>`

error[E0308]: mismatched types
  --> $DIR/disallowed-positions.rs:282:47
   |
LL |     while let Range { start: true, end } = t..&&false {}
   |                                               ^^^^^^^ expected `bool`, found `&&bool`
   |
help: consider removing the `&&`
   |
LL -     while let Range { start: true, end } = t..&&false {}
LL +     while let Range { start: true, end } = t..false {}
   |

error[E0308]: mismatched types
  --> $DIR/disallowed-positions.rs:282:11
   |
LL |     while let Range { start: true, end } = t..&&false {}
   |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `bool`, found struct `Range`
   |
   = note: expected type `bool`
            found struct `std::ops::Range<bool>`

error[E0277]: the `?` operator can only be applied to values that implement `Try`
  --> $DIR/disallowed-positions.rs:220:23
   |
LL |         while let 0 = 0? {}
   |                       ^^ the `?` operator cannot be applied to type `{integer}`
   |
   = help: the trait `Try` is not implemented for `{integer}`

error[E0614]: type `bool` cannot be dereferenced
  --> $DIR/disallowed-positions.rs:311:5
   |
LL |     *let 0 = 0;
   |     ^^^^^^^^^^

error[E0600]: cannot apply unary operator `-` to type `bool`
  --> $DIR/disallowed-positions.rs:315:5
   |
LL |     -let 0 = 0;
   |     ^^^^^^^^^^ cannot apply unary operator `-`

error[E0277]: the `?` operator can only be applied to values that implement `Try`
  --> $DIR/disallowed-positions.rs:325:5
   |
LL |     (let 0 = 0)?;
   |     ^^^^^^^^^^^^ the `?` operator cannot be applied to type `bool`
   |
   = help: the trait `Try` is not implemented for `bool`

error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `FromResidual`)
  --> $DIR/disallowed-positions.rs:325:16
   |
LL | fn outside_if_and_while_expr() {
   | ------------------------------ this function should return `Result` or `Option` to accept `?`
...
LL |     (let 0 = 0)?;
   |                ^ cannot use the `?` operator in a function that returns `()`
   |
   = help: the trait `FromResidual<_>` is not implemented for `()`

error[E0308]: mismatched types
  --> $DIR/disallowed-positions.rs:356:10
   |
LL |     (let Range { start: _, end: _ } = true..true || false);
   |          ^^^^^^^^^^^^^^^^^^^^^^^^^^   ---- this expression has type `bool`
   |          |
   |          expected `bool`, found struct `Range`
   |
   = note: expected type `bool`
            found struct `std::ops::Range<_>`

error[E0308]: mismatched types
  --> $DIR/disallowed-positions.rs:379:5
   |
LL | fn outside_if_and_while_expr() {
   |                                - help: try adding a return type: `-> &bool`
...
LL |     &let 0 = 0
   |     ^^^^^^^^^^ expected `()`, found `&bool`

error[E0277]: the `?` operator can only be applied to values that implement `Try`
  --> $DIR/disallowed-positions.rs:321:17
   |
LL |         let 0 = 0?;
   |                 ^^ the `?` operator cannot be applied to type `{integer}`
   |
   = help: the trait `Try` is not implemented for `{integer}`

error: aborting due to 215 previous errors

Some errors have detailed explanations: E0277, E0308, E0600, E0614.
For more information about an error, try `rustc --explain E0277`.