error: expected expression, found `let` statement --> $DIR/feature-gate.rs:10:16 | LL | () if (let 0 = 1) => {} | ^^^ error: expected expression, found `let` statement --> $DIR/feature-gate.rs:15:18 | LL | () if (((let 0 = 1))) => {} | ^^^ error: expected expression, found `let` statement --> $DIR/feature-gate.rs:28:16 | LL | () if (let 0 = 1) && true => {} | ^^^ error: expected expression, found `let` statement --> $DIR/feature-gate.rs:33:24 | LL | () if true && (let 0 = 1) => {} | ^^^ error: expected expression, found `let` statement --> $DIR/feature-gate.rs:38:16 | LL | () if (let 0 = 1) && (let 0 = 1) => {} | ^^^ error: expected expression, found `let` statement --> $DIR/feature-gate.rs:38:31 | LL | () if (let 0 = 1) && (let 0 = 1) => {} | ^^^ error: expected expression, found `let` statement --> $DIR/feature-gate.rs:46:42 | LL | () if let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = 5) => {} | ^^^ error: expected expression, found `let` statement --> $DIR/feature-gate.rs:46:55 | LL | () if let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = 5) => {} | ^^^ error: expected expression, found `let` statement --> $DIR/feature-gate.rs:46:68 | LL | () if let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = 5) => {} | ^^^ error: expected expression, found `let` statement --> $DIR/feature-gate.rs:78:16 | LL | use_expr!((let 0 = 1 && 0 == 0)); | ^^^ error: expected expression, found `let` statement --> $DIR/feature-gate.rs:82:16 | LL | use_expr!((let 0 = 1)); | ^^^ error: no rules expected the token `let` --> $DIR/feature-gate.rs:92:15 | LL | macro_rules! use_expr { | --------------------- when calling this macro ... LL | use_expr!(let 0 = 1); | ^^^ no rules expected this token in macro call | note: while trying to match meta-variable `$e:expr` --> $DIR/feature-gate.rs:71:10 | LL | ($e:expr) => { | ^^^^^^^ error: `let` expressions are not supported here --> $DIR/feature-gate.rs:10:16 | 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/feature-gate.rs:10:16 | LL | () if (let 0 = 1) => {} | ^^^^^^^^^ error: `let` expressions are not supported here --> $DIR/feature-gate.rs:15:18 | 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/feature-gate.rs:15:18 | LL | () if (((let 0 = 1))) => {} | ^^^^^^^^^ error: `let` expressions are not supported here --> $DIR/feature-gate.rs:28:16 | 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/feature-gate.rs:28:16 | LL | () if (let 0 = 1) && true => {} | ^^^^^^^^^ error: `let` expressions are not supported here --> $DIR/feature-gate.rs:33:24 | 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/feature-gate.rs:33:24 | LL | () if true && (let 0 = 1) => {} | ^^^^^^^^^ error: `let` expressions are not supported here --> $DIR/feature-gate.rs:38:16 | 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/feature-gate.rs:38:16 | LL | () if (let 0 = 1) && (let 0 = 1) => {} | ^^^^^^^^^ error: `let` expressions are not supported here --> $DIR/feature-gate.rs:38:31 | 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/feature-gate.rs:38:31 | LL | () if (let 0 = 1) && (let 0 = 1) => {} | ^^^^^^^^^ error: `let` expressions are not supported here --> $DIR/feature-gate.rs:46:42 | 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/feature-gate.rs:46:42 | 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/feature-gate.rs:46:55 | 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/feature-gate.rs:46:42 | 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/feature-gate.rs:46:68 | 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/feature-gate.rs:46:42 | 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/feature-gate.rs:78:16 | 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/feature-gate.rs:78:16 | LL | use_expr!((let 0 = 1 && 0 == 0)); | ^^^^^^^^^^^^^^^^^^^ error: `let` expressions are not supported here --> $DIR/feature-gate.rs:82:16 | 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/feature-gate.rs:82:16 | LL | use_expr!((let 0 = 1)); | ^^^^^^^^^ error[E0658]: `if let` guards are experimental --> $DIR/feature-gate.rs:7:12 | LL | () if let 0 = 1 => {} | ^^^^^^^^^^^^ | = note: see issue #51114 for more information = help: add `#![feature(if_let_guard)]` to the crate attributes to enable = help: you can write `if matches!(, )` instead of `if let = ` error[E0658]: `if let` guards are experimental --> $DIR/feature-gate.rs:20:12 | LL | () if true && let 0 = 1 => {} | ^^^^^^^^^^^^^^^^^^^^ | = note: see issue #51114 for more information = help: add `#![feature(if_let_guard)]` to the crate attributes to enable = help: you can write `if matches!(, )` instead of `if let = ` error[E0658]: `if let` guards are experimental --> $DIR/feature-gate.rs:24:12 | LL | () if let 0 = 1 && true => {} | ^^^^^^^^^^^^^^^^^^^^ | = note: see issue #51114 for more information = help: add `#![feature(if_let_guard)]` to the crate attributes to enable = help: you can write `if matches!(, )` instead of `if let = ` error[E0658]: `if let` guards are experimental --> $DIR/feature-gate.rs:46:12 | LL | () if let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = 5) => {} | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | = note: see issue #51114 for more information = help: add `#![feature(if_let_guard)]` to the crate attributes to enable = help: you can write `if matches!(, )` instead of `if let = ` error[E0658]: `if let` guards are experimental --> $DIR/feature-gate.rs:61:12 | LL | () if let Range { start: _, end: _ } = (true..true) && false => {} | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | = note: see issue #51114 for more information = help: add `#![feature(if_let_guard)]` to the crate attributes to enable = help: you can write `if matches!(, )` instead of `if let = ` error[E0658]: `if let` guards are experimental --> $DIR/feature-gate.rs:88:12 | LL | () if let 0 = 1 => {} | ^^^^^^^^^^^^ | = note: see issue #51114 for more information = help: add `#![feature(if_let_guard)]` to the crate attributes to enable = help: you can write `if matches!(, )` instead of `if let = ` error[E0658]: `let` expressions in this position are unstable --> $DIR/feature-gate.rs:10:16 | LL | () if (let 0 = 1) => {} | ^^^^^^^^^ | = note: see issue #53667 for more information = help: add `#![feature(let_chains)]` to the crate attributes to enable error[E0658]: `let` expressions in this position are unstable --> $DIR/feature-gate.rs:15:18 | LL | () if (((let 0 = 1))) => {} | ^^^^^^^^^ | = note: see issue #53667 for more information = help: add `#![feature(let_chains)]` to the crate attributes to enable error[E0658]: `let` expressions in this position are unstable --> $DIR/feature-gate.rs:20:23 | LL | () if true && let 0 = 1 => {} | ^^^^^^^^^ | = note: see issue #53667 for more information = help: add `#![feature(let_chains)]` to the crate attributes to enable error[E0658]: `let` expressions in this position are unstable --> $DIR/feature-gate.rs:24:15 | LL | () if let 0 = 1 && true => {} | ^^^^^^^^^ | = note: see issue #53667 for more information = help: add `#![feature(let_chains)]` to the crate attributes to enable error[E0658]: `let` expressions in this position are unstable --> $DIR/feature-gate.rs:28:16 | LL | () if (let 0 = 1) && true => {} | ^^^^^^^^^ | = note: see issue #53667 for more information = help: add `#![feature(let_chains)]` to the crate attributes to enable error[E0658]: `let` expressions in this position are unstable --> $DIR/feature-gate.rs:33:24 | LL | () if true && (let 0 = 1) => {} | ^^^^^^^^^ | = note: see issue #53667 for more information = help: add `#![feature(let_chains)]` to the crate attributes to enable error[E0658]: `let` expressions in this position are unstable --> $DIR/feature-gate.rs:38:16 | LL | () if (let 0 = 1) && (let 0 = 1) => {} | ^^^^^^^^^ | = note: see issue #53667 for more information = help: add `#![feature(let_chains)]` to the crate attributes to enable error[E0658]: `let` expressions in this position are unstable --> $DIR/feature-gate.rs:38:31 | LL | () if (let 0 = 1) && (let 0 = 1) => {} | ^^^^^^^^^ | = note: see issue #53667 for more information = help: add `#![feature(let_chains)]` to the crate attributes to enable error[E0658]: `let` expressions in this position are unstable --> $DIR/feature-gate.rs:46:15 | LL | () if let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = 5) => {} | ^^^^^^^^^ | = note: see issue #53667 for more information = help: add `#![feature(let_chains)]` to the crate attributes to enable error[E0658]: `let` expressions in this position are unstable --> $DIR/feature-gate.rs:46:28 | LL | () if let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = 5) => {} | ^^^^^^^^^ | = note: see issue #53667 for more information = help: add `#![feature(let_chains)]` to the crate attributes to enable error[E0658]: `let` expressions in this position are unstable --> $DIR/feature-gate.rs:46:42 | LL | () if let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = 5) => {} | ^^^^^^^^^ | = note: see issue #53667 for more information = help: add `#![feature(let_chains)]` to the crate attributes to enable error[E0658]: `let` expressions in this position are unstable --> $DIR/feature-gate.rs:46:55 | LL | () if let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = 5) => {} | ^^^^^^^^^ | = note: see issue #53667 for more information = help: add `#![feature(let_chains)]` to the crate attributes to enable error[E0658]: `let` expressions in this position are unstable --> $DIR/feature-gate.rs:46:68 | LL | () if let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = 5) => {} | ^^^^^^^^^ | = note: see issue #53667 for more information = help: add `#![feature(let_chains)]` to the crate attributes to enable error[E0658]: `let` expressions in this position are unstable --> $DIR/feature-gate.rs:61:15 | LL | () if let Range { start: _, end: _ } = (true..true) && false => {} | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | = note: see issue #53667 for more information = help: add `#![feature(let_chains)]` to the crate attributes to enable error[E0658]: `let` expressions in this position are unstable --> $DIR/feature-gate.rs:78:16 | LL | use_expr!((let 0 = 1 && 0 == 0)); | ^^^^^^^^^ | = note: see issue #53667 for more information = help: add `#![feature(let_chains)]` to the crate attributes to enable error[E0658]: `let` expressions in this position are unstable --> $DIR/feature-gate.rs:82:16 | LL | use_expr!((let 0 = 1)); | ^^^^^^^^^ | = note: see issue #53667 for more information = help: add `#![feature(let_chains)]` to the crate attributes to enable error: aborting due to 45 previous errors For more information about this error, try `rustc --explain E0658`.