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# error kind ExecutionFailed
# pre-build errors command failed: exit status: 101
# rustc version rustc 1.99.0-nightly (d0babd8b6 2026-07-15)
# docs.rs version docsrs 0.0.0 (f1b150f0cd76f7cabcd39e1f4790ba771b28b5c4 2026-07-19 )
# build log [INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "DOCS_RS=1" "-w" "/opt/rustwide/workdir" "--user" "1001:1001" "12c7eb31c7dedea9c9f1d2de3b80ba813abb315a2ce09282e5bb9a7fb49cec6d" "/opt/rustwide/cargo-home/bin/cargo" "+nightly-2026-07-16" "rustdoc" "--lib" "-Zrustdoc-map" "--config" "build.rustdocflags=[\"--cfg\", \"docsrs\", \"-Z\", \"unstable-options\", \"--emit=html-non-static-files\", \"--resource-suffix\", \"-20260715-1.99.0-nightly-d0babd8b6\", \"--static-root-path\", \"/-/rustdoc.static/\", \"--cap-lints\", \"warn\", \"--extern-html-root-takes-precedence\"]" "--offline" "-Zunstable-options" "--config=doc.extern-map.registries.crates-io=\"https://docs.rs/{pkg_name}/{version}/x86_64-unknown-linux-gnu\"" "-Zrustdoc-scrape-examples" "-j6" "--target" "x86_64-unknown-linux-gnu", kill_on_drop: false }` [INFO] [stderr] warning: target filter specified, but no targets matched; this is a no-op [INFO] [stderr] Documenting badlang-parser v0.1.2 (/opt/rustwide/workdir) [INFO] [stderr] error: let chains are only allowed in Rust 2024 or later [INFO] [stderr] --> src/lib.rs:796:28 [INFO] [stderr] | [INFO] [stderr] 796 | if let Some(elif_index) = elif_statements.remove(if_index) [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error: let chains are only allowed in Rust 2024 or later [INFO] [stderr] --> src/lib.rs:797:32 [INFO] [stderr] | [INFO] [stderr] 797 | ... && let Some(Token::Elif(jump_addr)) = tokens.get_mut(elif_index) [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error: let chains are only allowed in Rust 2024 or later [INFO] [stderr] --> src/lib.rs:928:12 [INFO] [stderr] | [INFO] [stderr] 928 | if let Some(limit) = time_limit [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error: let chains are only allowed in Rust 2024 or later [INFO] [stderr] --> src/lib.rs:939:20 [INFO] [stderr] | [INFO] [stderr] 939 | if let Some(a) = stack.pop() [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error: let chains are only allowed in Rust 2024 or later [INFO] [stderr] --> src/lib.rs:940:24 [INFO] [stderr] | [INFO] [stderr] 940 | && let Some(b) = stack.pop() [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error: let chains are only allowed in Rust 2024 or later [INFO] [stderr] --> src/lib.rs:948:20 [INFO] [stderr] | [INFO] [stderr] 948 | if let Some(a) = stack.pop() [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error: let chains are only allowed in Rust 2024 or later [INFO] [stderr] --> src/lib.rs:949:24 [INFO] [stderr] | [INFO] [stderr] 949 | && let Some(b) = stack.pop() [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error: let chains are only allowed in Rust 2024 or later [INFO] [stderr] --> src/lib.rs:957:20 [INFO] [stderr] | [INFO] [stderr] 957 | if let Some(a) = stack.pop() [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error: let chains are only allowed in Rust 2024 or later [INFO] [stderr] --> src/lib.rs:958:24 [INFO] [stderr] | [INFO] [stderr] 958 | && let Some(b) = stack.pop() [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error: let chains are only allowed in Rust 2024 or later [INFO] [stderr] --> src/lib.rs:966:20 [INFO] [stderr] | [INFO] [stderr] 966 | if let Some(a) = stack.pop() [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error: let chains are only allowed in Rust 2024 or later [INFO] [stderr] --> src/lib.rs:967:24 [INFO] [stderr] | [INFO] [stderr] 967 | && let Some(b) = stack.pop() [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error: let chains are only allowed in Rust 2024 or later [INFO] [stderr] --> src/lib.rs:978:20 [INFO] [stderr] | [INFO] [stderr] 978 | if let Some(a) = stack.pop() [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error: let chains are only allowed in Rust 2024 or later [INFO] [stderr] --> src/lib.rs:979:24 [INFO] [stderr] | [INFO] [stderr] 979 | && let Some(b) = stack.pop() [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error: let chains are only allowed in Rust 2024 or later [INFO] [stderr] --> src/lib.rs:987:20 [INFO] [stderr] | [INFO] [stderr] 987 | if let Some(a) = stack.pop() [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error: let chains are only allowed in Rust 2024 or later [INFO] [stderr] --> src/lib.rs:988:24 [INFO] [stderr] | [INFO] [stderr] 988 | && let Some(b) = stack.pop() [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error: let chains are only allowed in Rust 2024 or later [INFO] [stderr] --> src/lib.rs:996:20 [INFO] [stderr] | [INFO] [stderr] 996 | if let Some(a) = stack.pop() [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error: let chains are only allowed in Rust 2024 or later [INFO] [stderr] --> src/lib.rs:997:24 [INFO] [stderr] | [INFO] [stderr] 997 | && let Some(b) = stack.pop() [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error: let chains are only allowed in Rust 2024 or later [INFO] [stderr] --> src/lib.rs:1005:20 [INFO] [stderr] | [INFO] [stderr] 1005 | if let Some(a) = stack.pop() [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error: let chains are only allowed in Rust 2024 or later [INFO] [stderr] --> src/lib.rs:1006:24 [INFO] [stderr] | [INFO] [stderr] 1006 | && let Some(b) = stack.pop() [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error: let chains are only allowed in Rust 2024 or later [INFO] [stderr] --> src/lib.rs:1014:20 [INFO] [stderr] | [INFO] [stderr] 1014 | if let Some(a) = stack.pop() [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error: let chains are only allowed in Rust 2024 or later [INFO] [stderr] --> src/lib.rs:1015:24 [INFO] [stderr] | [INFO] [stderr] 1015 | && let Some(b) = stack.pop() [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error: let chains are only allowed in Rust 2024 or later [INFO] [stderr] --> src/lib.rs:1023:20 [INFO] [stderr] | [INFO] [stderr] 1023 | if let Some(a) = stack.pop() [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error: let chains are only allowed in Rust 2024 or later [INFO] [stderr] --> src/lib.rs:1024:24 [INFO] [stderr] | [INFO] [stderr] 1024 | && let Some(b) = stack.pop() [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error: let chains are only allowed in Rust 2024 or later [INFO] [stderr] --> src/lib.rs:1032:20 [INFO] [stderr] | [INFO] [stderr] 1032 | if let Some(a) = stack.pop() [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error: let chains are only allowed in Rust 2024 or later [INFO] [stderr] --> src/lib.rs:1033:24 [INFO] [stderr] | [INFO] [stderr] 1033 | && let Some(b) = stack.pop() [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error: let chains are only allowed in Rust 2024 or later [INFO] [stderr] --> src/lib.rs:1041:20 [INFO] [stderr] | [INFO] [stderr] 1041 | if let Some(a) = stack.pop() [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error: let chains are only allowed in Rust 2024 or later [INFO] [stderr] --> src/lib.rs:1042:24 [INFO] [stderr] | [INFO] [stderr] 1042 | && let Some(b) = stack.pop() [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error: let chains are only allowed in Rust 2024 or later [INFO] [stderr] --> src/lib.rs:1050:20 [INFO] [stderr] | [INFO] [stderr] 1050 | if let Some(a) = stack.pop() [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error: let chains are only allowed in Rust 2024 or later [INFO] [stderr] --> src/lib.rs:1051:24 [INFO] [stderr] | [INFO] [stderr] 1051 | && let Some(b) = stack.pop() [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error: let chains are only allowed in Rust 2024 or later [INFO] [stderr] --> src/lib.rs:1059:20 [INFO] [stderr] | [INFO] [stderr] 1059 | if let Some(a) = stack.pop() [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error: let chains are only allowed in Rust 2024 or later [INFO] [stderr] --> src/lib.rs:1060:24 [INFO] [stderr] | [INFO] [stderr] 1060 | && let Some(b) = stack.pop() [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error: let chains are only allowed in Rust 2024 or later [INFO] [stderr] --> src/lib.rs:1068:20 [INFO] [stderr] | [INFO] [stderr] 1068 | if let Some(a) = stack.pop() [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error: let chains are only allowed in Rust 2024 or later [INFO] [stderr] --> src/lib.rs:1069:24 [INFO] [stderr] | [INFO] [stderr] 1069 | && let Some(b) = stack.pop() [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error: let chains are only allowed in Rust 2024 or later [INFO] [stderr] --> src/lib.rs:1077:20 [INFO] [stderr] | [INFO] [stderr] 1077 | if let Some(a) = stack.pop() [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error: let chains are only allowed in Rust 2024 or later [INFO] [stderr] --> src/lib.rs:1078:24 [INFO] [stderr] | [INFO] [stderr] 1078 | && let Some(b) = stack.pop() [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error: let chains are only allowed in Rust 2024 or later [INFO] [stderr] --> src/lib.rs:1086:20 [INFO] [stderr] | [INFO] [stderr] 1086 | if let Some(a) = stack.pop() [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error: let chains are only allowed in Rust 2024 or later [INFO] [stderr] --> src/lib.rs:1087:24 [INFO] [stderr] | [INFO] [stderr] 1087 | && let Some(b) = stack.pop() [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error: let chains are only allowed in Rust 2024 or later [INFO] [stderr] --> src/lib.rs:1095:20 [INFO] [stderr] | [INFO] [stderr] 1095 | if let Some(a) = stack.pop() [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error: let chains are only allowed in Rust 2024 or later [INFO] [stderr] --> src/lib.rs:1096:24 [INFO] [stderr] | [INFO] [stderr] 1096 | && let Some(b) = stack.pop() [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error: let chains are only allowed in Rust 2024 or later [INFO] [stderr] --> src/lib.rs:1104:20 [INFO] [stderr] | [INFO] [stderr] 1104 | if let Some(a) = stack.pop() [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error: let chains are only allowed in Rust 2024 or later [INFO] [stderr] --> src/lib.rs:1105:24 [INFO] [stderr] | [INFO] [stderr] 1105 | && let Some(b) = stack.pop() [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error: let chains are only allowed in Rust 2024 or later [INFO] [stderr] --> src/lib.rs:1113:20 [INFO] [stderr] | [INFO] [stderr] 1113 | if let Some(a) = stack.pop() [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error: let chains are only allowed in Rust 2024 or later [INFO] [stderr] --> src/lib.rs:1114:24 [INFO] [stderr] | [INFO] [stderr] 1114 | && let Some(b) = stack.pop() [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error: let chains are only allowed in Rust 2024 or later [INFO] [stderr] --> src/lib.rs:1122:20 [INFO] [stderr] | [INFO] [stderr] 1122 | if let Some(a) = stack.pop() [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error: let chains are only allowed in Rust 2024 or later [INFO] [stderr] --> src/lib.rs:1123:24 [INFO] [stderr] | [INFO] [stderr] 1123 | && let Some(b) = stack.pop() [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error: let chains are only allowed in Rust 2024 or later [INFO] [stderr] --> src/lib.rs:1131:20 [INFO] [stderr] | [INFO] [stderr] 1131 | if let Some(a) = stack.pop() [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error: let chains are only allowed in Rust 2024 or later [INFO] [stderr] --> src/lib.rs:1132:24 [INFO] [stderr] | [INFO] [stderr] 1132 | && let Some(b) = stack.pop() [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error: let chains are only allowed in Rust 2024 or later [INFO] [stderr] --> src/lib.rs:1147:20 [INFO] [stderr] | [INFO] [stderr] 1147 | if let Some(a) = stack.pop() [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error: let chains are only allowed in Rust 2024 or later [INFO] [stderr] --> src/lib.rs:1148:24 [INFO] [stderr] | [INFO] [stderr] 1148 | && let Some(b) = stack.pop() [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error: let chains are only allowed in Rust 2024 or later [INFO] [stderr] --> src/lib.rs:1169:20 [INFO] [stderr] | [INFO] [stderr] 1169 | if let Some(a) = stack.pop() [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error: let chains are only allowed in Rust 2024 or later [INFO] [stderr] --> src/lib.rs:1170:24 [INFO] [stderr] | [INFO] [stderr] 1170 | && let Some(b) = stack.pop() [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error: let chains are only allowed in Rust 2024 or later [INFO] [stderr] --> src/lib.rs:1179:20 [INFO] [stderr] | [INFO] [stderr] 1179 | if let Some(a) = stack.pop() [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error: let chains are only allowed in Rust 2024 or later [INFO] [stderr] --> src/lib.rs:1180:24 [INFO] [stderr] | [INFO] [stderr] 1180 | && let Some(b) = stack.pop() [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error: let chains are only allowed in Rust 2024 or later [INFO] [stderr] --> src/lib.rs:1190:20 [INFO] [stderr] | [INFO] [stderr] 1190 | if let Some(a) = stack.pop() [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error: let chains are only allowed in Rust 2024 or later [INFO] [stderr] --> src/lib.rs:1191:24 [INFO] [stderr] | [INFO] [stderr] 1191 | && let Some(b) = stack.pop() [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error: let chains are only allowed in Rust 2024 or later [INFO] [stderr] --> src/lib.rs:1192:24 [INFO] [stderr] | [INFO] [stderr] 1192 | && let Some(c) = stack.pop() [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error: Compilation failed, aborting rustdoc [INFO] [stderr] [INFO] [stderr] error: could not document `badlang-parser` [INFO] running `Command { std: "docker" "inspect" "12c7eb31c7dedea9c9f1d2de3b80ba813abb315a2ce09282e5bb9a7fb49cec6d", kill_on_drop: false }`