[INFO] fetching crate lique 0.1.0...
[INFO] testing lique-0.1.0 against 1.91.0 for beta-1.92-2
[INFO] extracting crate lique 0.1.0 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate lique 0.1.0
[INFO] finished tweaking crates.io crate lique 0.1.0
[INFO] tweaked toml for crates.io crate lique 0.1.0 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate lique 0.1.0 on toolchain 1.91.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate lique 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded oq3_source_file v0.7.0
[INFO] [stderr]   Downloaded ra_ap_limit v0.0.188
[INFO] [stderr]   Downloaded concolor-query v0.3.3
[INFO] [stderr]   Downloaded drop_bomb v0.1.5
[INFO] [stderr]   Downloaded oq3_parser v0.7.0
[INFO] [stderr]   Downloaded cov-mark v2.0.0
[INFO] [stderr]   Downloaded oq3_syntax v0.7.0
[INFO] [stderr]   Downloaded thiserror v2.0.11
[INFO] [stderr]   Downloaded clap v4.5.27
[INFO] [stderr]   Downloaded ariadne v0.5.0
[INFO] [stderr]   Downloaded oq3_semantics v0.7.0
[INFO] [stderr]   Downloaded clap_derive v4.5.24
[INFO] [stderr]   Downloaded ariadne v0.3.0
[INFO] [stderr]   Downloaded clap_builder v4.5.27
[INFO] [stderr]   Downloaded xshell v0.2.7
[INFO] [stderr]   Downloaded thiserror-impl v2.0.11
[INFO] [stderr]   Downloaded boolenum v0.1.0
[INFO] [stderr]   Downloaded concolor v0.1.1
[INFO] [stderr]   Downloaded lique_core v0.1.0
[INFO] [stderr]   Downloaded oq3_lexer v0.7.0
[INFO] [stderr]   Downloaded xshell-macros v0.2.7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 86592d71f7b883c9db962596dbf6c9451919912165ffb912c897331e6ac24621
[INFO] running `Command { std: "docker" "start" "-a" "86592d71f7b883c9db962596dbf6c9451919912165ffb912c897331e6ac24621", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "86592d71f7b883c9db962596dbf6c9451919912165ffb912c897331e6ac24621", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "86592d71f7b883c9db962596dbf6c9451919912165ffb912c897331e6ac24621", kill_on_drop: false }`
[INFO] [stdout] 86592d71f7b883c9db962596dbf6c9451919912165ffb912c897331e6ac24621
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ea45e73ede9781921688da5818a766a620fd41d4ec47707dfc0aa79aed76fb6d
[INFO] running `Command { std: "docker" "start" "-a" "ea45e73ede9781921688da5818a766a620fd41d4ec47707dfc0aa79aed76fb6d", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.93
[INFO] [stderr]    Compiling unicode-ident v1.0.16
[INFO] [stderr]    Compiling libc v0.2.169
[INFO] [stderr]    Compiling unicode-properties v0.1.3
[INFO] [stderr]    Compiling unicode-xid v0.2.6
[INFO] [stderr]    Compiling rustversion v1.0.19
[INFO] [stderr]    Compiling hashbrown v0.14.5
[INFO] [stderr]    Compiling xshell-macros v0.2.7
[INFO] [stderr]    Compiling ra_ap_limit v0.0.188
[INFO] [stderr]    Compiling memoffset v0.9.1
[INFO] [stderr]    Compiling ahash v0.7.8
[INFO] [stderr]    Compiling countme v3.0.1
[INFO] [stderr]    Compiling concolor-query v0.3.3
[INFO] [stderr]    Compiling drop_bomb v0.1.5
[INFO] [stderr]    Compiling text-size v1.1.1
[INFO] [stderr]    Compiling indexmap v2.7.1
[INFO] [stderr]    Compiling itertools v0.10.5
[INFO] [stderr]    Compiling cov-mark v2.0.0
[INFO] [stderr]    Compiling triomphe v0.1.11
[INFO] [stderr]    Compiling yansi v0.5.1
[INFO] [stderr]    Compiling oq3_lexer v0.7.0
[INFO] [stderr]    Compiling serde v1.0.217
[INFO] [stderr]    Compiling anstyle-parse v0.2.6
[INFO] [stderr]    Compiling is_terminal_polyfill v1.70.1
[INFO] [stderr]    Compiling anstyle-query v1.1.2
[INFO] [stderr]    Compiling anstyle v1.0.10
[INFO] [stderr]    Compiling thiserror v2.0.11
[INFO] [stderr]    Compiling colorchoice v1.0.3
[INFO] [stderr]    Compiling serde_json v1.0.138
[INFO] [stderr]    Compiling clap_lex v0.7.4
[INFO] [stderr]    Compiling xshell v0.2.7
[INFO] [stderr]    Compiling anyhow v1.0.95
[INFO] [stderr]    Compiling anstream v0.6.18
[INFO] [stderr]    Compiling rowan v0.15.15
[INFO] [stderr]    Compiling memchr v2.7.4
[INFO] [stderr]    Compiling ryu v1.0.19
[INFO] [stderr]    Compiling oq3_parser v0.7.0
[INFO] [stderr]    Compiling itoa v1.0.14
[INFO] [stderr]    Compiling clap_builder v4.5.27
[INFO] [stderr]    Compiling ariadne v0.5.0
[INFO] [stderr]    Compiling is-terminal v0.4.15
[INFO] [stderr]    Compiling getrandom v0.2.15
[INFO] [stderr]    Compiling concolor v0.1.1
[INFO] [stderr]    Compiling quote v1.0.38
[INFO] [stderr]    Compiling ariadne v0.3.0
[INFO] [stderr]    Compiling hashbrown v0.12.3
[INFO] [stderr]    Compiling oq3_syntax v0.7.0
[INFO] [stderr]    Compiling syn v2.0.96
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling oq3_source_file v0.7.0
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling boolenum v0.1.0
[INFO] [stderr]    Compiling oq3_semantics v0.7.0
[INFO] [stderr]    Compiling serde_derive v1.0.217
[INFO] [stderr]    Compiling thiserror-impl v2.0.11
[INFO] [stderr]    Compiling clap_derive v4.5.24
[INFO] [stderr]    Compiling clap v4.5.27
[INFO] [stderr]    Compiling lique_core v0.1.0
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/lique_core-0.1.0/src/lints.rs:37:16
[INFO] [stdout]    |
[INFO] [stdout] 37 |             if let Some(q1_index) = q1.index_operators().next().unwrap().index_kind()
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/lique_core-0.1.0/src/lints.rs:38:20
[INFO] [stdout]    |
[INFO] [stdout] 38 |                 && let Some(q2_index) = q2.index_operators().next().unwrap().index_kind()
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/lique_core-0.1.0/src/lints.rs:39:20
[INFO] [stdout]    |
[INFO] [stdout] 39 |                 && let IndexKind::ExpressionList(q1_index) = q1_index
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/lique_core-0.1.0/src/lints.rs:40:20
[INFO] [stdout]    |
[INFO] [stdout] 40 |                 && let IndexKind::ExpressionList(q2_index) = q2_index
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/lique_core-0.1.0/src/lints.rs:43:24
[INFO] [stdout]    |
[INFO] [stdout] 43 |                     if let Expr::Literal(index1) = e1
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/lique_core-0.1.0/src/lints.rs:44:28
[INFO] [stdout]    |
[INFO] [stdout] 44 |                         && let Expr::Literal(index2) = e2
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/lique_core-0.1.0/src/lints.rs:45:28
[INFO] [stdout]    |
[INFO] [stdout] 45 |                         && let LiteralKind::IntNumber(index1) = index1.kind()
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/lique_core-0.1.0/src/lints.rs:46:28
[INFO] [stdout]    |
[INFO] [stdout] 46 |                         && let LiteralKind::IntNumber(index2) = index2.kind()
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/lique_core-0.1.0/src/lints.rs:67:12
[INFO] [stdout]    |
[INFO] [stdout] 67 |         if let Stmt::QuantumDeclarationStatement(declaration) = stmt.clone()
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/lique_core-0.1.0/src/lints.rs:68:16
[INFO] [stdout]    |
[INFO] [stdout] 68 |             && let Some(qubit) = declaration.qubit_type()
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/lique_core-0.1.0/src/lints.rs:69:16
[INFO] [stdout]    |
[INFO] [stdout] 69 |             && let Some(bits_name) = declaration.name()
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/lique_core-0.1.0/src/lints.rs:70:16
[INFO] [stdout]    |
[INFO] [stdout] 70 |             && let Some(designator) = qubit.designator()
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/lique_core-0.1.0/src/lints.rs:71:16
[INFO] [stdout]    |
[INFO] [stdout] 71 |             && let Some(expr) = designator.expr()
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/lique_core-0.1.0/src/lints.rs:72:16
[INFO] [stdout]    |
[INFO] [stdout] 72 |             && let Expr::Literal(bits) = expr
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/lique_core-0.1.0/src/lints.rs:87:12
[INFO] [stdout]    |
[INFO] [stdout] 87 |         if let Stmt::ClassicalDeclarationStatement(declaration) = stmt.clone()
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/lique_core-0.1.0/src/lints.rs:88:16
[INFO] [stdout]    |
[INFO] [stdout] 88 |             && let Some(qubit) = declaration.scalar_type()
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/lique_core-0.1.0/src/lints.rs:89:16
[INFO] [stdout]    |
[INFO] [stdout] 89 |             && let Some(bits_name) = declaration.name()
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/lique_core-0.1.0/src/lints.rs:90:16
[INFO] [stdout]    |
[INFO] [stdout] 90 |             && let Some(designator) = qubit.designator()
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/lique_core-0.1.0/src/lints.rs:91:16
[INFO] [stdout]    |
[INFO] [stdout] 91 |             && let Some(expr) = designator.expr()
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/lique_core-0.1.0/src/lints.rs:92:16
[INFO] [stdout]    |
[INFO] [stdout] 92 |             && let Expr::Literal(bits) = expr
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/lique_core-0.1.0/src/lints.rs:118:20
[INFO] [stdout]     |
[INFO] [stdout] 118 |                 if let Some(kind) = operator.index_kind()
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/lique_core-0.1.0/src/lints.rs:119:24
[INFO] [stdout]     |
[INFO] [stdout] 119 |                     && let IndexKind::ExpressionList(list) = kind
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/lique_core-0.1.0/src/lints/conditional_without_measurement.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 19 |         if let Stmt::AssignmentStmt(assignment) = stmt.clone()
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/lique_core-0.1.0/src/lints/conditional_without_measurement.rs:20:16
[INFO] [stdout]    |
[INFO] [stdout] 20 |             && let Some(rhs) = assignment.rhs()
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/lique_core-0.1.0/src/lints/conditional_without_measurement.rs:21:16
[INFO] [stdout]    |
[INFO] [stdout] 21 |             && let Expr::MeasureExpression(_) = rhs
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/lique_core-0.1.0/src/lints/conditional_without_measurement.rs:27:23
[INFO] [stdout]    |
[INFO] [stdout] 27 |             } else if let Some(indexed_identifier) = assignment.indexed_identifier()
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/lique_core-0.1.0/src/lints/conditional_without_measurement.rs:28:20
[INFO] [stdout]    |
[INFO] [stdout] 28 |                 && let Some(identifier) = indexed_identifier.identifier()
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/lique_core-0.1.0/src/lints/conditional_without_measurement.rs:31:24
[INFO] [stdout]    |
[INFO] [stdout] 31 |                     if let Some(kind) = operator.index_kind()
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/lique_core-0.1.0/src/lints/conditional_without_measurement.rs:32:28
[INFO] [stdout]    |
[INFO] [stdout] 32 |                         && let IndexKind::ExpressionList(list) = kind
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/lique_core-0.1.0/src/lints/conditional_without_measurement.rs:50:12
[INFO] [stdout]    |
[INFO] [stdout] 50 |         if let Stmt::IfStmt(if_stmt) = stmt
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/lique_core-0.1.0/src/lints/conditional_without_measurement.rs:51:16
[INFO] [stdout]    |
[INFO] [stdout] 51 |             && let Some(condition) = if_stmt.condition()
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/lique_core-0.1.0/src/lints/conditional_without_measurement.rs:56:20
[INFO] [stdout]    |
[INFO] [stdout] 56 |                 if let Expr::BinExpr(binary_expr) = condition.clone()
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/lique_core-0.1.0/src/lints/conditional_without_measurement.rs:57:24
[INFO] [stdout]    |
[INFO] [stdout] 57 |                     && let Some(lhs) = binary_expr.lhs()
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/lique_core-0.1.0/src/lints/conditional_without_measurement.rs:91:32
[INFO] [stdout]    |
[INFO] [stdout] 91 | ...                   if let Some(kind) = operator.index_kind()
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/lique_core-0.1.0/src/lints/conditional_without_measurement.rs:92:36
[INFO] [stdout]    |
[INFO] [stdout] 92 | ...                   && let IndexKind::ExpressionList(list) = kind
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/lique_core-0.1.0/src/lints/double_measurement.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 16 |         if let Stmt::AssignmentStmt(assignment) = stmt
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/lique_core-0.1.0/src/lints/double_measurement.rs:17:16
[INFO] [stdout]    |
[INFO] [stdout] 17 |             && let Some(rhs) = assignment.rhs()
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/lique_core-0.1.0/src/lints/double_measurement.rs:18:16
[INFO] [stdout]    |
[INFO] [stdout] 18 |             && let Expr::MeasureExpression(measurement) = rhs
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/lique_core-0.1.0/src/lints/double_measurement.rs:19:16
[INFO] [stdout]    |
[INFO] [stdout] 19 |             && let Some(operand) = measurement.gate_operand()
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/lique_core-0.1.0/src/lints/op_after_measurement.rs:15:20
[INFO] [stdout]    |
[INFO] [stdout] 15 |                 if let Some(rhs) = assignment.rhs()
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/lique_core-0.1.0/src/lints/op_after_measurement.rs:16:24
[INFO] [stdout]    |
[INFO] [stdout] 16 |                     && let Expr::MeasureExpression(measurement) = rhs
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/lique_core-0.1.0/src/lints/op_after_measurement.rs:17:24
[INFO] [stdout]    |
[INFO] [stdout] 17 |                     && let Some(operand) = measurement.gate_operand()
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/lique_core-0.1.0/src/lints/op_after_measurement.rs:23:20
[INFO] [stdout]    |
[INFO] [stdout] 23 |                 if let Some(expr) = expr_stmt.expr()
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/lique_core-0.1.0/src/lints/op_after_measurement.rs:24:24
[INFO] [stdout]    |
[INFO] [stdout] 24 |                     && let Expr::GateCallExpr(gate_call) = expr
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/lique_core-0.1.0/src/lints/op_after_measurement.rs:25:24
[INFO] [stdout]    |
[INFO] [stdout] 25 |                     && let Some(qubit_list) = gate_call.qubit_list()
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/lique_core-0.1.0/src/lints/oversized_circuit.rs:47:20
[INFO] [stdout]    |
[INFO] [stdout] 47 |                 if let Some(expr) = expr_stmt.expr()
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/lique_core-0.1.0/src/lints/oversized_circuit.rs:48:24
[INFO] [stdout]    |
[INFO] [stdout] 48 |                     && let Expr::GateCallExpr(gate_call) = expr
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/lique_core-0.1.0/src/lints/oversized_circuit.rs:49:24
[INFO] [stdout]    |
[INFO] [stdout] 49 |                     && let Some(qubit_list) = gate_call.qubit_list()
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/lique_core-0.1.0/src/lints/oversized_circuit.rs:67:20
[INFO] [stdout]    |
[INFO] [stdout] 67 |                 if let Some(rhs) = assignment.rhs()
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/lique_core-0.1.0/src/lints/oversized_circuit.rs:68:24
[INFO] [stdout]    |
[INFO] [stdout] 68 |                     && let Expr::MeasureExpression(measurement) = rhs
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/lique_core-0.1.0/src/lints/oversized_circuit.rs:69:24
[INFO] [stdout]    |
[INFO] [stdout] 69 |                     && let Some(operand) = measurement.gate_operand()
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/lique_core-0.1.0/src/lints/unmanipulated_qubits.rs:31:20
[INFO] [stdout]    |
[INFO] [stdout] 31 |                 if let Some(expr) = expr_stmt.expr()
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/lique_core-0.1.0/src/lints/unmanipulated_qubits.rs:32:24
[INFO] [stdout]    |
[INFO] [stdout] 32 |                     && let Expr::GateCallExpr(gate_call) = expr
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/lique_core-0.1.0/src/lints/unmanipulated_qubits.rs:33:24
[INFO] [stdout]    |
[INFO] [stdout] 33 |                     && let Some(qubit_list) = gate_call.qubit_list()
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/lique_core-0.1.0/src/lints/unmanipulated_qubits.rs:51:20
[INFO] [stdout]    |
[INFO] [stdout] 51 |                 if let Some(rhs) = assignment.rhs()
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/lique_core-0.1.0/src/lints/unmanipulated_qubits.rs:52:24
[INFO] [stdout]    |
[INFO] [stdout] 52 |                     && let Expr::MeasureExpression(measurement) = rhs
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/lique_core-0.1.0/src/lints/unmanipulated_qubits.rs:53:24
[INFO] [stdout]    |
[INFO] [stdout] 53 |                     && let Some(operand) = measurement.gate_operand()
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/lique_core-0.1.0/src/lints/unmanipulated_qubits.rs:58:36
[INFO] [stdout]    |
[INFO] [stdout] 58 | ...                   if let Some(kind) = operator.index_kind()
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/lique_core-0.1.0/src/lints/unmanipulated_qubits.rs:59:40
[INFO] [stdout]    |
[INFO] [stdout] 59 | ...                   && let IndexKind::ExpressionList(list) = kind
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/lique_core-0.1.0/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(let_chains)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^ help: remove the attribute
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `let_chains` has been stable since `1.88.0` and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `lique_core` (lib) due to 60 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "ea45e73ede9781921688da5818a766a620fd41d4ec47707dfc0aa79aed76fb6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ea45e73ede9781921688da5818a766a620fd41d4ec47707dfc0aa79aed76fb6d", kill_on_drop: false }`
[INFO] [stdout] ea45e73ede9781921688da5818a766a620fd41d4ec47707dfc0aa79aed76fb6d
