[INFO] cloning repository https://github.com/JaniM/effect-lang
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/JaniM/effect-lang" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJaniM%2Feffect-lang", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJaniM%2Feffect-lang'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 42a4fe1686e4456e6de5a88cc3499bd7c0c0d9f3
[INFO] documenting JaniM/effect-lang against 1.75.0 for beta-1.76-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJaniM%2Feffect-lang" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/JaniM/effect-lang on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/JaniM/effect-lang
[INFO] finished tweaking git repo https://github.com/JaniM/effect-lang
[INFO] tweaked toml for git repo https://github.com/JaniM/effect-lang written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/JaniM/effect-lang 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" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded unindent v0.1.9
[INFO] [stderr]   Downloaded dbg-pls-derive v0.3.1
[INFO] [stderr]   Downloaded prettyplease v0.1.17
[INFO] [stderr]   Downloaded dbg-pls v0.3.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fe3f32879f7166f3bc4699a88d13fde971e7d35938ba0201526d67e43f14ffb9
[INFO] running `Command { std: "docker" "start" "-a" "fe3f32879f7166f3bc4699a88d13fde971e7d35938ba0201526d67e43f14ffb9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fe3f32879f7166f3bc4699a88d13fde971e7d35938ba0201526d67e43f14ffb9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe3f32879f7166f3bc4699a88d13fde971e7d35938ba0201526d67e43f14ffb9", kill_on_drop: false }`
[INFO] [stdout] fe3f32879f7166f3bc4699a88d13fde971e7d35938ba0201526d67e43f14ffb9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5cbfd417c938ad8060ff53289f314697d7ce0bb9c43964465977edae497c5b4a
[INFO] running `Command { std: "docker" "start" "-a" "5cbfd417c938ad8060ff53289f314697d7ce0bb9c43964465977edae497c5b4a", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.40
[INFO] [stderr]    Compiling quote v1.0.20
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling regex-syntax v0.6.27
[INFO] [stderr]    Compiling unicode-ident v1.0.2
[INFO] [stderr]    Compiling crunchy v0.2.2
[INFO] [stderr]    Compiling syn v1.0.98
[INFO] [stderr]    Compiling tiny-keccak v2.0.2
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]     Checking once_cell v1.13.0
[INFO] [stderr]     Checking unicode-width v0.1.9
[INFO] [stderr]    Compiling prettyplease v0.1.17
[INFO] [stderr]    Compiling beef v0.5.2
[INFO] [stderr]     Checking smawk v0.3.1
[INFO] [stderr]     Checking ryu v1.0.10
[INFO] [stderr]     Checking itoa v1.0.2
[INFO] [stderr]     Checking codespan-reporting v0.11.1
[INFO] [stderr]     Checking unindent v0.1.9
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]     Checking getrandom v0.2.7
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking colored v2.0.0
[INFO] [stderr]     Checking dashmap v4.0.2
[INFO] [stderr]     Checking ahash v0.7.6
[INFO] [stderr]    Compiling const-random-macro v0.1.13
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]     Checking const-random v0.1.13
[INFO] [stderr]     Checking ahash v0.3.8
[INFO] [stderr]     Checking lasso v0.6.0
[INFO] [stderr]     Checking chumsky v0.8.0
[INFO] [stderr]    Compiling regex v1.6.0
[INFO] [stderr]    Compiling unicode-linebreak v0.1.2
[INFO] [stderr]    Compiling dbg-pls-derive v0.3.1
[INFO] [stderr]    Compiling logos-derive v0.12.1
[INFO] [stderr]    Compiling derive_more v0.99.17
[INFO] [stderr]     Checking textwrap v0.15.0
[INFO] [stderr]     Checking dbg-pls v0.3.3
[INFO] [stderr]     Checking logos v0.12.1
[INFO] [stderr]  Documenting effect v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(box_patterns)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(int_log)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(generic_arg_infer)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(type_alias_impl_trait)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: `let` expressions in this position are unstable
[INFO] [stdout]    --> src/bytecode/program.rs:115:20
[INFO] [stdout]     |
[INFO] [stdout] 115 |                 if let Instruction::Jump(target) = inst && *target == idx as u32 + 1 {
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #53667 <https://github.com/rust-lang/rust/issues/53667> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: `let` expressions in this position are unstable
[INFO] [stdout]    --> src/bytecode/program.rs:139:12
[INFO] [stdout]     |
[INFO] [stdout] 139 |         if let Some(name) = def.header.name && resolve_symbol(name) == "main" {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #53667 <https://github.com/rust-lang/rust/issues/53667> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 6 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0658.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `effect`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/1.75.0-x86_64-unknown-linux-gnu/bin/rustdoc --edition=2021 --crate-type bin --crate-name effect src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items '-Arustdoc::private-intra-doc-links' -C metadata=8e315b699f8fb3ea -L dependency=/opt/rustwide/target/debug/deps --extern chumsky=/opt/rustwide/target/debug/deps/libchumsky-a6675c4bb3d5e67d.rmeta --extern codespan_reporting=/opt/rustwide/target/debug/deps/libcodespan_reporting-0182a1cdd2898aeb.rmeta --extern colored=/opt/rustwide/target/debug/deps/libcolored-3cafbdeaad9ac5a0.rmeta --extern dbg_pls=/opt/rustwide/target/debug/deps/libdbg_pls-7511df3d9ed8aa49.rmeta --extern derive_more=/opt/rustwide/target/debug/deps/libderive_more-a0c7e58aa425d96b.so --extern lasso=/opt/rustwide/target/debug/deps/liblasso-765a4bcd2077b7d5.rmeta --extern logos=/opt/rustwide/target/debug/deps/liblogos-5d8d27bdc95af470.rmeta --extern once_cell=/opt/rustwide/target/debug/deps/libonce_cell-669cffb73e816b1d.rmeta --extern tinyvec=/opt/rustwide/target/debug/deps/libtinyvec-e50b4b7cff243444.rmeta --extern unindent=/opt/rustwide/target/debug/deps/libunindent-5ea222396071f2a6.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "5cbfd417c938ad8060ff53289f314697d7ce0bb9c43964465977edae497c5b4a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5cbfd417c938ad8060ff53289f314697d7ce0bb9c43964465977edae497c5b4a", kill_on_drop: false }`
[INFO] [stdout] 5cbfd417c938ad8060ff53289f314697d7ce0bb9c43964465977edae497c5b4a
[INFO] documenting JaniM/effect-lang against beta-2023-12-22 for beta-1.76-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJaniM%2Feffect-lang" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/JaniM/effect-lang on toolchain beta-2023-12-22
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-12-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/JaniM/effect-lang
[INFO] finished tweaking git repo https://github.com/JaniM/effect-lang
[INFO] tweaked toml for git repo https://github.com/JaniM/effect-lang written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/JaniM/effect-lang 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" "+beta-2023-12-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-12-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a42d3248b340ed24f85175e65f3f0dc2e7737b2234425b32d24dadf052ed27dc
[INFO] running `Command { std: "docker" "start" "-a" "a42d3248b340ed24f85175e65f3f0dc2e7737b2234425b32d24dadf052ed27dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a42d3248b340ed24f85175e65f3f0dc2e7737b2234425b32d24dadf052ed27dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a42d3248b340ed24f85175e65f3f0dc2e7737b2234425b32d24dadf052ed27dc", kill_on_drop: false }`
[INFO] [stdout] a42d3248b340ed24f85175e65f3f0dc2e7737b2234425b32d24dadf052ed27dc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-12-22" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 123370810b5049faf25144f64e9a93bae02ddca0b591465efdbae8caa5933d8b
[INFO] running `Command { std: "docker" "start" "-a" "123370810b5049faf25144f64e9a93bae02ddca0b591465efdbae8caa5933d8b", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.40
[INFO] [stderr]    Compiling quote v1.0.20
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling regex-syntax v0.6.27
[INFO] [stderr]    Compiling unicode-ident v1.0.2
[INFO] [stderr]    Compiling crunchy v0.2.2
[INFO] [stderr]    Compiling syn v1.0.98
[INFO] [stderr]    Compiling tiny-keccak v2.0.2
[INFO] [stderr]     Checking once_cell v1.13.0
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling prettyplease v0.1.17
[INFO] [stderr]     Checking unicode-width v0.1.9
[INFO] [stderr]     Checking smawk v0.3.1
[INFO] [stderr]    Compiling beef v0.5.2
[INFO] [stderr]     Checking itoa v1.0.2
[INFO] [stderr]     Checking ryu v1.0.10
[INFO] [stderr]     Checking codespan-reporting v0.11.1
[INFO] [stderr]     Checking unindent v0.1.9
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]     Checking getrandom v0.2.7
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking colored v2.0.0
[INFO] [stderr]     Checking dashmap v4.0.2
[INFO] [stderr]     Checking ahash v0.7.6
[INFO] [stderr]    Compiling const-random-macro v0.1.13
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]     Checking lasso v0.6.0
[INFO] [stderr]     Checking const-random v0.1.13
[INFO] [stderr]     Checking ahash v0.3.8
[INFO] [stderr]     Checking chumsky v0.8.0
[INFO] [stderr]    Compiling regex v1.6.0
[INFO] [stderr]    Compiling unicode-linebreak v0.1.2
[INFO] [stderr]    Compiling dbg-pls-derive v0.3.1
[INFO] [stderr]    Compiling logos-derive v0.12.1
[INFO] [stderr]    Compiling derive_more v0.99.17
[INFO] [stderr]     Checking textwrap v0.15.0
[INFO] [stderr]     Checking dbg-pls v0.3.3
[INFO] [stderr]     Checking logos v0.12.1
[INFO] [stderr]  Documenting effect v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(box_patterns)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(int_log)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(generic_arg_infer)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(type_alias_impl_trait)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: `let` expressions in this position are unstable
[INFO] [stdout]    --> src/bytecode/program.rs:115:20
[INFO] [stdout]     |
[INFO] [stdout] 115 |                 if let Instruction::Jump(target) = inst && *target == idx as u32 + 1 {
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #53667 <https://github.com/rust-lang/rust/issues/53667> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: `let` expressions in this position are unstable
[INFO] [stdout]    --> src/bytecode/program.rs:139:12
[INFO] [stdout]     |
[INFO] [stdout] 139 |         if let Some(name) = def.header.name && resolve_symbol(name) == "main" {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #53667 <https://github.com/rust-lang/rust/issues/53667> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 6 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0658.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `effect`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/beta-2023-12-22-x86_64-unknown-linux-gnu/bin/rustdoc --edition=2021 --crate-type bin --crate-name effect src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items '-Arustdoc::private-intra-doc-links' -C metadata=d6e46438436651f8 -L dependency=/opt/rustwide/target/debug/deps --extern chumsky=/opt/rustwide/target/debug/deps/libchumsky-c9f31a73cb353be8.rmeta --extern codespan_reporting=/opt/rustwide/target/debug/deps/libcodespan_reporting-9f70f7b35b88f369.rmeta --extern colored=/opt/rustwide/target/debug/deps/libcolored-5867a839c7d5aebd.rmeta --extern dbg_pls=/opt/rustwide/target/debug/deps/libdbg_pls-b558a4713caf19f3.rmeta --extern derive_more=/opt/rustwide/target/debug/deps/libderive_more-7fd3a010ea3b0233.so --extern lasso=/opt/rustwide/target/debug/deps/liblasso-01c7bd8974aba1c9.rmeta --extern logos=/opt/rustwide/target/debug/deps/liblogos-ab1731725f25f981.rmeta --extern once_cell=/opt/rustwide/target/debug/deps/libonce_cell-4ef32f0c10f7affa.rmeta --extern tinyvec=/opt/rustwide/target/debug/deps/libtinyvec-2c30b8e5cb69b9de.rmeta --extern unindent=/opt/rustwide/target/debug/deps/libunindent-be4355929d307ca5.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "123370810b5049faf25144f64e9a93bae02ddca0b591465efdbae8caa5933d8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "123370810b5049faf25144f64e9a93bae02ddca0b591465efdbae8caa5933d8b", kill_on_drop: false }`
[INFO] [stdout] 123370810b5049faf25144f64e9a93bae02ddca0b591465efdbae8caa5933d8b
