[INFO] cloning repository https://github.com/hch12907/rfcmei
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hch12907/rfcmei" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhch12907%2Frfcmei", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhch12907%2Frfcmei'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9c2441af83bb62eb614c1b9f7d0d29933a5e052e
[INFO] checking hch12907/rfcmei against 011c518242557d21690f7936b5812318dc2fec47 for pr-159877
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhch12907%2Frfcmei" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/hch12907/rfcmei
[INFO] finished tweaking git repo https://github.com/hch12907/rfcmei
[INFO] tweaked toml for git repo https://github.com/hch12907/rfcmei written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/hch12907/rfcmei on toolchain 011c518242557d21690f7936b5812318dc2fec47
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+011c518242557d21690f7936b5812318dc2fec47" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/hch12907/rfcmei 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" "+011c518242557d21690f7936b5812318dc2fec47" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded argh v0.1.12
[INFO] [stderr]   Downloaded html5gum v0.5.7
[INFO] [stderr]   Downloaded argh_shared v0.1.12
[INFO] [stderr]   Downloaded argh_derive v0.1.12
[INFO] [stderr]   Downloaded syn v2.0.87
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:1fa6594d87c8fa7b311925a7a77a16f539833322d9dfba4ce891f211db2f90b1" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] d89a8b50106f2935d63550e8480e317265feff49a809cea51aba8cb3eb5f3396
[INFO] running `Command { std: "docker" "start" "d89a8b50106f2935d63550e8480e317265feff49a809cea51aba8cb3eb5f3396", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d89a8b50106f2935d63550e8480e317265feff49a809cea51aba8cb3eb5f3396", kill_on_drop: false }`
[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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "d89a8b50106f2935d63550e8480e317265feff49a809cea51aba8cb3eb5f3396" "/opt/rustwide/cargo-home/bin/cargo" "+011c518242557d21690f7936b5812318dc2fec47" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d89a8b50106f2935d63550e8480e317265feff49a809cea51aba8cb3eb5f3396", kill_on_drop: false }`
[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" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-w" "/opt/rustwide/workdir" "--user" "0:0" "d89a8b50106f2935d63550e8480e317265feff49a809cea51aba8cb3eb5f3396" "/opt/rustwide/cargo-home/bin/cargo" "+011c518242557d21690f7936b5812318dc2fec47" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.89
[INFO] [stderr]    Compiling serde v1.0.214
[INFO] [stderr]    Compiling jetscii v0.5.3
[INFO] [stderr]     Checking memchr v2.7.4
[INFO] [stderr]     Checking html5gum v0.5.7
[INFO] [stderr]     Checking aho-corasick v1.1.3
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]    Compiling syn v2.0.87
[INFO] [stderr]     Checking regex-automata v0.4.8
[INFO] [stderr]    Compiling serde_derive v1.0.214
[INFO] [stderr]     Checking regex v1.11.1
[INFO] [stderr]    Compiling argh_shared v0.1.12
[INFO] [stderr]    Compiling argh_derive v0.1.12
[INFO] [stderr]     Checking argh v0.1.12
[INFO] [stderr]     Checking rfcmei v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]    --> src/document/phase1.rs:225:19
[INFO] [stdout]     |
[INFO] [stdout] 225 |               while let Some(Element::Text { text, .. } | Element::Line(text)) =
[INFO] [stdout]     |  ___________________^
[INFO] [stdout] 226 | |                 self.elements.get(self.elements.len() - count)
[INFO] [stdout]     | |______________________________________________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]    --> src/document/phase1.rs:230:20
[INFO] [stdout]     |
[INFO] [stdout] 230 |                 if let Some(x) = self.elements.get(self.elements.len() - count - 1)
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]    --> src/document/phase1.rs:441:44
[INFO] [stdout]     |
[INFO] [stdout] 441 | ...                   let inner = if let Some(section) = id.split('-').nth(1)
[INFO] [stdout]     |                                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]    --> src/document/phase1.rs:225:19
[INFO] [stdout]     |
[INFO] [stdout] 225 |               while let Some(Element::Text { text, .. } | Element::Line(text)) =
[INFO] [stdout]     |  ___________________^
[INFO] [stdout] 226 | |                 self.elements.get(self.elements.len() - count)
[INFO] [stdout]     | |______________________________________________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]    --> src/document/phase1.rs:230:20
[INFO] [stdout]     |
[INFO] [stdout] 230 |                 if let Some(x) = self.elements.get(self.elements.len() - count - 1)
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]    --> src/document/phase1.rs:441:44
[INFO] [stdout]     |
[INFO] [stdout] 441 | ...                   let inner = if let Some(section) = id.split('-').nth(1)
[INFO] [stdout]     |                                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]    --> src/document/phase2.rs:263:16
[INFO] [stdout]     |
[INFO] [stdout] 263 |             if let Phase1Element::Anchor { id, .. } = &elements[i]
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]    --> src/document/phase2.rs:266:23
[INFO] [stdout]     |
[INFO] [stdout] 266 |                 while let Some(Phase1Element::Line(line)) = elements.get(i - 1)
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]    --> src/document/phase2.rs:275:20
[INFO] [stdout]     |
[INFO] [stdout] 275 |                 if let Some(Phase1Element::Text { text, ending: true }) = elements.get(i + 1)
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]    --> src/document/phase2.rs:263:16
[INFO] [stdout]     |
[INFO] [stdout] 263 |             if let Phase1Element::Anchor { id, .. } = &elements[i]
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]    --> src/document/phase2.rs:266:23
[INFO] [stdout]     |
[INFO] [stdout] 266 |                 while let Some(Phase1Element::Line(line)) = elements.get(i - 1)
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]    --> src/document/phase2.rs:275:20
[INFO] [stdout]     |
[INFO] [stdout] 275 |                 if let Some(Phase1Element::Text { text, ending: true }) = elements.get(i + 1)
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]    --> src/document/phase2.rs:286:23
[INFO] [stdout]     |
[INFO] [stdout] 286 |                 while let Some(Phase1Element::Line(text)) = elements.get(i + 2)
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]    --> src/document/phase2.rs:322:39
[INFO] [stdout]     |
[INFO] [stdout] 322 |                   let next_element = if let Some(Phase1Element::Text { text, ending: true }) =
[INFO] [stdout]     |  _______________________________________^
[INFO] [stdout] 323 | |                     elements.get(i + 1)
[INFO] [stdout]     | |_______________________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]    --> src/document/phase2.rs:331:20
[INFO] [stdout]     |
[INFO] [stdout] 331 |                 if let Some(title_start) = this.find(". ")
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]    --> src/document/phase2.rs:480:12
[INFO] [stdout]     |
[INFO] [stdout] 480 |         if let Some(Phase1Element::Line(text)) = left_column.first()
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]    --> src/document/phase2.rs:481:16
[INFO] [stdout]     |
[INFO] [stdout] 481 |             && let Some(captured) = stream_regex.captures(text)
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]    --> src/document/phase2.rs:634:28
[INFO] [stdout]     |
[INFO] [stdout] 634 |                         && let Phase1Element::Text { text, ending: true } = &xs[0]
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]    --> src/document/phase2.rs:286:23
[INFO] [stdout]     |
[INFO] [stdout] 286 |                 while let Some(Phase1Element::Line(text)) = elements.get(i + 2)
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]    --> src/document/phase2.rs:322:39
[INFO] [stdout]     |
[INFO] [stdout] 322 |                   let next_element = if let Some(Phase1Element::Text { text, ending: true }) =
[INFO] [stdout]     |  _______________________________________^
[INFO] [stdout] 323 | |                     elements.get(i + 1)
[INFO] [stdout]     | |_______________________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]    --> src/document/phase2.rs:331:20
[INFO] [stdout]     |
[INFO] [stdout] 331 |                 if let Some(title_start) = this.find(". ")
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]    --> src/document/phase2.rs:480:12
[INFO] [stdout]     |
[INFO] [stdout] 480 |         if let Some(Phase1Element::Line(text)) = left_column.first()
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]    --> src/document/phase2.rs:481:16
[INFO] [stdout]     |
[INFO] [stdout] 481 |             && let Some(captured) = stream_regex.captures(text)
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]    --> src/document/phase2.rs:634:28
[INFO] [stdout]     |
[INFO] [stdout] 634 |                         && let Phase1Element::Text { text, ending: true } = &xs[0]
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]    --> src/document/phase3.rs:524:32
[INFO] [stdout]     |
[INFO] [stdout] 524 |             let extracted = if let Some(dot) = captured.name("dotLetterUpper")
[INFO] [stdout]     |                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]    --> src/document/phase3.rs:550:23
[INFO] [stdout]     |
[INFO] [stdout] 550 |             } else if let Some(bracket) = captured.name("bracketLetterUpper")
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]    --> src/document/phase3.rs:560:23
[INFO] [stdout]     |
[INFO] [stdout] 560 |             } else if let Some(bracket) = captured.name("bracketLetterLower")
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]    --> src/document/phase3.rs:570:23
[INFO] [stdout]     |
[INFO] [stdout] 570 |             } else if let Some(bracket) = captured.name("bracketNumber")
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]    --> src/document/phase3.rs:601:23
[INFO] [stdout]     |
[INFO] [stdout] 601 |             } else if let Some(none) = captured.name("none")
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]    --> src/document/phase3.rs:832:20
[INFO] [stdout]     |
[INFO] [stdout] 832 |                   if let Some((item_style, num, marker, content)) =
[INFO] [stdout]     |  ____________________^
[INFO] [stdout] 833 | |                     OrderedListStyle::extract_from_line(line)
[INFO] [stdout]     | |_____________________________________________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]    --> src/document/phase3.rs:911:20
[INFO] [stdout]     |
[INFO] [stdout] 911 |                 if let Some((item_style, item_depth)) = UnorderedListStyle::extract_from_line(line)
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]    --> src/document/phase3.rs:524:32
[INFO] [stdout]     |
[INFO] [stdout] 524 |             let extracted = if let Some(dot) = captured.name("dotLetterUpper")
[INFO] [stdout]     |                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]    --> src/document/phase4.rs:546:44
[INFO] [stdout]     |
[INFO] [stdout] 546 |                         if is_reference && let Some(found) = REFERENCE_LEFT_COLUMN.find(&line.text)
[INFO] [stdout]     |                                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]    --> src/document/phase4.rs:556:32
[INFO] [stdout]     |
[INFO] [stdout] 556 | ...                   && let Some(found) = NORMAL_LEFT_COLUMN.captures(&line.text)
[INFO] [stdout]     |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]    --> src/document/phase4.rs:557:32
[INFO] [stdout]     |
[INFO] [stdout] 557 | ...                   && let Some(term) = found.get(1)
[INFO] [stdout]     |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]    --> src/document/phase4.rs:558:32
[INFO] [stdout]     |
[INFO] [stdout] 558 | ...                   && let Some(spaces) = found.get(2)
[INFO] [stdout]     |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]    --> src/document/phase5.rs:329:16
[INFO] [stdout]     |
[INFO] [stdout] 329 |             if let Some(InnerElement::Text(last)) = result.last_mut()
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]    --> src/document/phase5.rs:330:20
[INFO] [stdout]     |
[INFO] [stdout] 330 |                 && let Some(InnerElement::Text(this)) = this_line.first()
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]    --> src/document/phase5.rs:338:33
[INFO] [stdout]     |
[INFO] [stdout] 338 |             if !preformatted && let Some(next_line) = lines.get(i + 1) {
[INFO] [stdout]     |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]    --> src/document/phase5.rs:429:16
[INFO] [stdout]     |
[INFO] [stdout] 429 |             && let Some(connector) = line.connector
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]    --> src/document/phase3.rs:550:23
[INFO] [stdout]     |
[INFO] [stdout] 550 |             } else if let Some(bracket) = captured.name("bracketLetterUpper")
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]    --> src/document/phase3.rs:560:23
[INFO] [stdout]     |
[INFO] [stdout] 560 |             } else if let Some(bracket) = captured.name("bracketLetterLower")
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]    --> src/document/phase3.rs:570:23
[INFO] [stdout]     |
[INFO] [stdout] 570 |             } else if let Some(bracket) = captured.name("bracketNumber")
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]    --> src/document/phase3.rs:601:23
[INFO] [stdout]     |
[INFO] [stdout] 601 |             } else if let Some(none) = captured.name("none")
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]    --> src/document/phase3.rs:832:20
[INFO] [stdout]     |
[INFO] [stdout] 832 |                   if let Some((item_style, num, marker, content)) =
[INFO] [stdout]     |  ____________________^
[INFO] [stdout] 833 | |                     OrderedListStyle::extract_from_line(line)
[INFO] [stdout]     | |_____________________________________________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]    --> src/document/phase3.rs:911:20
[INFO] [stdout]     |
[INFO] [stdout] 911 |                 if let Some((item_style, item_depth)) = UnorderedListStyle::extract_from_line(line)
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]    --> src/document/phase4.rs:546:44
[INFO] [stdout]     |
[INFO] [stdout] 546 |                         if is_reference && let Some(found) = REFERENCE_LEFT_COLUMN.find(&line.text)
[INFO] [stdout]     |                                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]    --> src/document/phase4.rs:556:32
[INFO] [stdout]     |
[INFO] [stdout] 556 | ...                   && let Some(found) = NORMAL_LEFT_COLUMN.captures(&line.text)
[INFO] [stdout]     |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]    --> src/document/phase4.rs:557:32
[INFO] [stdout]     |
[INFO] [stdout] 557 | ...                   && let Some(term) = found.get(1)
[INFO] [stdout]     |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]    --> src/document/phase4.rs:558:32
[INFO] [stdout]     |
[INFO] [stdout] 558 | ...                   && let Some(spaces) = found.get(2)
[INFO] [stdout]     |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]    --> src/document/phase5.rs:329:16
[INFO] [stdout]     |
[INFO] [stdout] 329 |             if let Some(InnerElement::Text(last)) = result.last_mut()
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]    --> src/document/phase5.rs:330:20
[INFO] [stdout]     |
[INFO] [stdout] 330 |                 && let Some(InnerElement::Text(this)) = this_line.first()
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]    --> src/document/phase5.rs:338:33
[INFO] [stdout]     |
[INFO] [stdout] 338 |             if !preformatted && let Some(next_line) = lines.get(i + 1) {
[INFO] [stdout]     |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: let chains are only allowed in Rust 2024 or later
[INFO] [stdout]    --> src/document/phase5.rs:429:16
[INFO] [stdout]     |
[INFO] [stdout] 429 |             && let Some(connector) = line.connector
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `let_chains` has been stable since 1.88.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(let_chains)]
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `let_chains` has been stable since 1.88.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(let_chains)]
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rfcmei` (bin "rfcmei" test) due to 27 previous errors; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `rfcmei` (bin "rfcmei") due to 27 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "d89a8b50106f2935d63550e8480e317265feff49a809cea51aba8cb3eb5f3396", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d89a8b50106f2935d63550e8480e317265feff49a809cea51aba8cb3eb5f3396", kill_on_drop: false }`
[INFO] [stdout] d89a8b50106f2935d63550e8480e317265feff49a809cea51aba8cb3eb5f3396
