[INFO] cloning repository https://github.com/LambdaAlpha/airlang_rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/LambdaAlpha/airlang_rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLambdaAlpha%2Fairlang_rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLambdaAlpha%2Fairlang_rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] af0016e5caec1cf47792478cf6e69fb94c622987
[INFO] documenting LambdaAlpha/airlang_rs 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%2FLambdaAlpha%2Fairlang_rs" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/LambdaAlpha/airlang_rs 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/LambdaAlpha/airlang_rs
[INFO] finished tweaking git repo https://github.com/LambdaAlpha/airlang_rs
[INFO] tweaked toml for git repo https://github.com/LambdaAlpha/airlang_rs written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/LambdaAlpha/airlang_rs 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] cc8065606da933325fd3de4fa5099d6c577e8f48fe5d005cc91bf010e2bdbc92
[INFO] running `Command { std: "docker" "start" "-a" "cc8065606da933325fd3de4fa5099d6c577e8f48fe5d005cc91bf010e2bdbc92", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cc8065606da933325fd3de4fa5099d6c577e8f48fe5d005cc91bf010e2bdbc92", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc8065606da933325fd3de4fa5099d6c577e8f48fe5d005cc91bf010e2bdbc92", kill_on_drop: false }`
[INFO] [stdout] cc8065606da933325fd3de4fa5099d6c577e8f48fe5d005cc91bf010e2bdbc92
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 4759356103ccc8c97a5496cbe58094382dacaff17e74f89f2e01e4d28c46b190
[INFO] running `Command { std: "docker" "start" "-a" "4759356103ccc8c97a5496cbe58094382dacaff17e74f89f2e01e4d28c46b190", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.151
[INFO] [stderr]    Compiling proc-macro2 v1.0.72
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling gmp-mpfr-sys v1.6.1
[INFO] [stderr]    Compiling az v1.2.1
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling thiserror v1.0.53
[INFO] [stderr]     Checking ppv-lite86 v0.2.17
[INFO] [stderr]    Compiling rug v1.22.0
[INFO] [stderr]    Compiling smartstring v1.0.1
[INFO] [stderr]     Checking minimal-lexical v0.2.1
[INFO] [stderr]     Checking memchr v2.7.1
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]     Checking rustc-hash v1.1.0
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]     Checking nom v7.1.3
[INFO] [stderr]    Compiling syn v2.0.43
[INFO] [stderr]     Checking getrandom v0.2.11
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]    Compiling thiserror-impl v1.0.53
[INFO] [stderr]     Checking airlang v0.0.10 (/opt/rustwide/workdir/lib)
[INFO] [stderr]  Documenting airlang v0.0.10 (/opt/rustwide/workdir/lib)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> lib/src/lib.rs:27:1
[INFO] [stdout]    |
[INFO] [stdout] 27 | / #![feature(
[INFO] [stdout] 28 | |     iter_array_chunks,
[INFO] [stdout] 29 | |     iter_advance_by,
[INFO] [stdout] 30 | |     try_trait_v2,
[INFO] [stdout] ...  |
[INFO] [stdout] 37 | |     variant_count
[INFO] [stdout] 38 | | )]
[INFO] [stdout]    | |__^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> lib/src/lib.rs:27:1
[INFO] [stdout]    |
[INFO] [stdout] 27 | / #![feature(
[INFO] [stdout] 28 | |     iter_array_chunks,
[INFO] [stdout] 29 | |     iter_advance_by,
[INFO] [stdout] 30 | |     try_trait_v2,
[INFO] [stdout] ...  |
[INFO] [stdout] 37 | |     variant_count
[INFO] [stdout] 38 | | )]
[INFO] [stdout]    | |__^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> lib/src/lib.rs:28:5
[INFO] [stdout]    |
[INFO] [stdout] 28 |     iter_array_chunks,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> lib/src/lib.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 |     iter_advance_by,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> lib/src/lib.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 30 |     try_trait_v2,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> lib/src/lib.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 31 |     iterator_try_collect,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> lib/src/lib.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 32 |     unsize,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> lib/src/lib.rs:33:5
[INFO] [stdout]    |
[INFO] [stdout] 33 |     coerce_unsized,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> lib/src/lib.rs:34:5
[INFO] [stdout]    |
[INFO] [stdout] 34 |     array_methods,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> lib/src/lib.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 35 |     assert_matches,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> lib/src/lib.rs:37:5
[INFO] [stdout]    |
[INFO] [stdout] 37 |     variant_count
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `airlang`
[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 lib --crate-name airlang lib/src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=4b0739110b5b6aea -L dependency=/opt/rustwide/target/debug/deps --extern nom=/opt/rustwide/target/debug/deps/libnom-d4d560e312c4843b.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-f25f73f27b734245.rmeta --extern rug=/opt/rustwide/target/debug/deps/librug-a7bd6aa01abd89e4.rmeta --extern rustc_hash=/opt/rustwide/target/debug/deps/librustc_hash-97a1b2d1b6045209.rmeta --extern smartstring=/opt/rustwide/target/debug/deps/libsmartstring-2432e2eb831ceeb3.rmeta --extern thiserror=/opt/rustwide/target/debug/deps/libthiserror-591155a3cd6026bc.rmeta --cap-lints=warn --crate-version 0.0.10` (exit status: 1)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to 10 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `airlang` (lib) due to 11 previous errors
[INFO] running `Command { std: "docker" "inspect" "4759356103ccc8c97a5496cbe58094382dacaff17e74f89f2e01e4d28c46b190", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4759356103ccc8c97a5496cbe58094382dacaff17e74f89f2e01e4d28c46b190", kill_on_drop: false }`
[INFO] [stdout] 4759356103ccc8c97a5496cbe58094382dacaff17e74f89f2e01e4d28c46b190
