[INFO] fetching crate fungi-lang 0.1.63...
[INFO] documenting fungi-lang-0.1.63 against beta-2021-08-01 for beta-1.55-rustdoc-1
[INFO] extracting crate fungi-lang 0.1.63 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate fungi-lang 0.1.63 on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate fungi-lang 0.1.63
[INFO] finished tweaking crates.io crate fungi-lang 0.1.63
[INFO] tweaked toml for crates.io crate fungi-lang 0.1.63 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded adapton v0.3.31
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 176ef28b2209f1fa895f7db9ff3a6e2d6d0670b5b13c435519fa4c5a11905f85
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "176ef28b2209f1fa895f7db9ff3a6e2d6d0670b5b13c435519fa4c5a11905f85", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "176ef28b2209f1fa895f7db9ff3a6e2d6d0670b5b13c435519fa4c5a11905f85", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "176ef28b2209f1fa895f7db9ff3a6e2d6d0670b5b13c435519fa4c5a11905f85", kill_on_drop: false }`
[INFO] [stdout] 176ef28b2209f1fa895f7db9ff3a6e2d6d0670b5b13c435519fa4c5a11905f85
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] f697073d5d96b911a31fb1c890f568b8bb46d5efa898c786cea1914ad2d61610
[INFO] running `Command { std: "docker" "start" "-a" "f697073d5d96b911a31fb1c890f568b8bb46d5efa898c786cea1914ad2d61610", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling serde v1.0.127
[INFO] [stderr]     Checking unicode-xid v0.1.0
[INFO] [stderr]     Checking adapton v0.3.31
[INFO] [stderr]    Compiling nom v4.2.3
[INFO] [stderr]     Checking aho-corasick v0.6.10
[INFO] [stderr]     Checking proc-macro2 v0.3.8
[INFO] [stderr]     Checking regex v0.2.11
[INFO] [stderr]    Compiling serde_derive v1.0.127
[INFO] [stderr]     Checking serde_json v1.0.66
[INFO] [stderr]  Documenting fungi-lang v0.1.63 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/lib.rs:95:1
[INFO] [stdout]    |
[INFO] [stdout] 95 | #![feature(crate_in_paths)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the attribute
[INFO] [stdout]    |
[INFO] [stdout]    = help: the feature `crate_in_paths` has been stable since 1.30.0 and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 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 document `fungi-lang`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type lib --crate-name fungi_lang src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern adapton=/opt/rustwide/target/debug/deps/libadapton-b628745747ae4cf6.rmeta --extern nom=/opt/rustwide/target/debug/deps/libnom-1aee15f8dda5be45.rmeta --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-8427d5b99addb223.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-fe984d001b37b618.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-c88720effa7343c1.rmeta --extern serde_derive=/opt/rustwide/target/debug/deps/libserde_derive-a66a1fdf9c467eb8.so --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-55037ff7e2523e27.rmeta --cap-lints=warn --crate-version 0.1.63` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "f697073d5d96b911a31fb1c890f568b8bb46d5efa898c786cea1914ad2d61610", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f697073d5d96b911a31fb1c890f568b8bb46d5efa898c786cea1914ad2d61610", kill_on_drop: false }`
[INFO] [stdout] f697073d5d96b911a31fb1c890f568b8bb46d5efa898c786cea1914ad2d61610
