[INFO] cloning repository https://github.com/lions-language/rust-toy-language
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/lions-language/rust-toy-language" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flions-language%2Frust-toy-language", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flions-language%2Frust-toy-language'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0683e3737381820766ac0fbbf785e8da430cd1d2
[INFO] documenting lions-language/rust-toy-language against beta-2023-04-20 for beta-1.70-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flions-language%2Frust-toy-language" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/lions-language/rust-toy-language on toolchain beta-2023-04-20
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-04-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/lions-language/rust-toy-language
[INFO] finished tweaking git repo https://github.com/lions-language/rust-toy-language
[INFO] tweaked toml for git repo https://github.com/lions-language/rust-toy-language written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/lions-language/rust-toy-language 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-2023-04-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded try_match_inner v0.4.0
[INFO] [stderr]   Downloaded try_match v0.3.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-04-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 612fc196c9962931c2754489324be02292d8651d91df7240e224b279190ac9d4
[INFO] running `Command { std: "docker" "start" "-a" "612fc196c9962931c2754489324be02292d8651d91df7240e224b279190ac9d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "612fc196c9962931c2754489324be02292d8651d91df7240e224b279190ac9d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "612fc196c9962931c2754489324be02292d8651d91df7240e224b279190ac9d4", kill_on_drop: false }`
[INFO] [stdout] 612fc196c9962931c2754489324be02292d8651d91df7240e224b279190ac9d4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-04-20" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 65662ef1c03df54ee54e2bc42fddd36d07179c5e1c9a26cc4d273406bd98ac8f
[INFO] running `Command { std: "docker" "start" "-a" "65662ef1c03df54ee54e2bc42fddd36d07179c5e1c9a26cc4d273406bd98ac8f", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]     Checking utils v0.1.0 (/opt/rustwide/workdir/src/utils)
[INFO] [stderr]     Checking matches v0.1.9
[INFO] [stderr]     Checking lexical v0.1.0 (/opt/rustwide/workdir/src/lexical)
[INFO] [stderr]  Documenting lexical v0.1.0 (/opt/rustwide/workdir/src/lexical)
[INFO] [stdout] warning: unused import: `std::ops::Deref`
[INFO] [stdout]  --> src/utils/src/cell/mod.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::ops::Deref;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/lexical/src/parser/from_string.rs:86:29
[INFO] [stdout]    |
[INFO] [stdout] 86 |                 '0'..='9' | '.' => {
[INFO] [stdout]    |                             ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]  Documenting utils v0.1.0 (/opt/rustwide/workdir/src/utils)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lexical/src/parser/from_string.rs:104:33
[INFO] [stdout]     |
[INFO] [stdout] 104 | ...                   let mut suffix = self.peeking_take_while(chars, |ch| self.is_char(ch));
[INFO] [stdout]     |                           ----^^^^^^
[INFO] [stdout]     |                           |
[INFO] [stdout]     |                           help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lexical/src/parser/from_string.rs:114:25
[INFO] [stdout]     |
[INFO] [stdout] 114 |                     let mut s = self.peeking_take_while(chars, |ch| ch != '"');
[INFO] [stdout]     |                         ----^
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]    Compiling quote v1.0.15
[INFO] [stderr]    Compiling enum-ordinalize v3.1.10
[INFO] [stderr]    Compiling try_match_inner v0.4.0
[INFO] [stderr]    Compiling derive-new v0.5.9
[INFO] [stderr]    Compiling educe v0.4.18
[INFO] [stderr]     Checking try_match v0.3.0
[INFO] [stderr]  Documenting grammar v0.1.0 (/opt/rustwide/workdir/src/grammar)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/grammar/src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(box_into_inner)]
[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 `grammar`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name grammar src/grammar/src/lib.rs -o /opt/rustwide/target/doc --cfg 'feature="default"' --cfg 'feature="std"' --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=119bc653c0f03009 -L dependency=/opt/rustwide/target/debug/deps --extern derive_new=/opt/rustwide/target/debug/deps/libderive_new-87c36e557a6ae5a2.so --extern educe=/opt/rustwide/target/debug/deps/libeduce-1c1e1aaf4c8a86e0.so --extern lexical=/opt/rustwide/target/debug/deps/liblexical-a385b7c46ef0b29b.rmeta --extern matches=/opt/rustwide/target/debug/deps/libmatches-ad6d3eca06d0189b.rmeta --extern try_match=/opt/rustwide/target/debug/deps/libtry_match-97d2848cbf14776b.rmeta --extern utils=/opt/rustwide/target/debug/deps/libutils-5bc7856a82059a17.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "65662ef1c03df54ee54e2bc42fddd36d07179c5e1c9a26cc4d273406bd98ac8f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "65662ef1c03df54ee54e2bc42fddd36d07179c5e1c9a26cc4d273406bd98ac8f", kill_on_drop: false }`
[INFO] [stdout] 65662ef1c03df54ee54e2bc42fddd36d07179c5e1c9a26cc4d273406bd98ac8f
