[INFO] fetching crate lalrpop-lambda 0.6.1...
[INFO] documenting lalrpop-lambda-0.6.1 against beta-2020-10-09 for beta-1.48-rustdoc-1
[INFO] extracting crate lalrpop-lambda 0.6.1 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate lalrpop-lambda 0.6.1 on toolchain beta-2020-10-09
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate lalrpop-lambda 0.6.1
[INFO] finished tweaking crates.io crate lalrpop-lambda 0.6.1
[INFO] tweaked toml for crates.io crate lalrpop-lambda 0.6.1 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate crates.io crate lalrpop-lambda 0.6.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ctor v0.1.9
[INFO] [stderr]   Downloaded lalrpop v0.17.0
[INFO] [stderr]   Downloaded lalrpop-util v0.17.0
[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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1ea69d8c49842ab12880fb00920f27e1e98fbe6777ebecf2ae9ac42d606678e9
[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" "1ea69d8c49842ab12880fb00920f27e1e98fbe6777ebecf2ae9ac42d606678e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1ea69d8c49842ab12880fb00920f27e1e98fbe6777ebecf2ae9ac42d606678e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ea69d8c49842ab12880fb00920f27e1e98fbe6777ebecf2ae9ac42d606678e9", kill_on_drop: false }`
[INFO] [stdout] 1ea69d8c49842ab12880fb00920f27e1e98fbe6777ebecf2ae9ac42d606678e9
[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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] aecaafd4469ae1a8090f0a030176292100d2df283b18f3935660078509785dcd
[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" "aecaafd4469ae1a8090f0a030176292100d2df283b18f3935660078509785dcd", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v0.15.35
[INFO] [stderr]    Compiling memchr v2.2.0
[INFO] [stderr]    Compiling lazy_static v1.3.0
[INFO] [stderr]    Compiling typenum v1.10.0
[INFO] [stderr]    Compiling cfg-if v0.1.9
[INFO] [stderr]    Compiling serde v1.0.92
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.45
[INFO] [stderr]    Compiling ucd-util v0.1.3
[INFO] [stderr]    Compiling utf8-ranges v1.0.3
[INFO] [stderr]    Compiling bit-vec v0.5.1
[INFO] [stderr]    Compiling bumpalo v2.4.3
[INFO] [stderr]    Compiling strsim v0.9.2
[INFO] [stderr]    Compiling new_debug_unreachable v1.0.3
[INFO] [stderr]    Compiling opaque-debug v0.2.2
[INFO] [stderr]    Compiling either v1.5.2
[INFO] [stderr]    Compiling diff v0.1.11
[INFO] [stderr]    Compiling lalrpop-util v0.17.0
[INFO] [stderr]    Compiling wasm-bindgen v0.2.45
[INFO] [stderr]    Compiling block-padding v0.1.4
[INFO] [stderr]    Compiling log v0.4.6
[INFO] [stderr]     Checking regex-syntax v0.5.6
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling itertools v0.8.0
[INFO] [stderr]    Compiling regex-syntax v0.6.7
[INFO] [stderr]    Compiling bit-set v0.5.1
[INFO] [stderr]    Compiling dirs v1.0.5
[INFO] [stderr]    Compiling atty v0.2.11
[INFO] [stderr]    Compiling ena v0.13.0
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]    Compiling term v0.5.2
[INFO] [stderr]    Compiling string_cache_codegen v0.4.2
[INFO] [stderr]     Checking aho-corasick v0.6.10
[INFO] [stderr]    Compiling ascii-canvas v2.0.0
[INFO] [stderr]    Compiling aho-corasick v0.7.3
[INFO] [stderr]    Compiling string_cache v0.7.3
[INFO] [stderr]    Compiling generic-array v0.12.0
[INFO] [stderr]    Compiling digest v0.8.0
[INFO] [stderr]    Compiling block-buffer v0.7.3
[INFO] [stderr]    Compiling sha2 v0.8.0
[INFO] [stderr]    Compiling regex v1.1.7
[INFO] [stderr]     Checking regex v0.2.11
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.45
[INFO] [stderr]    Compiling serde_derive v1.0.92
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.45
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.45
[INFO] [stderr]    Compiling docopt v1.1.0
[INFO] [stderr]    Compiling lalrpop v0.17.0
[INFO] [stderr]    Compiling lalrpop-lambda v0.6.1 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting lalrpop-lambda v0.6.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/lib.rs:42:1
[INFO] [stdout]    |
[INFO] [stdout] 42 | / #![feature(non_ascii_idents,
[INFO] [stdout] 43 | |            box_syntax,
[INFO] [stdout] 44 | |            box_patterns,
[INFO] [stdout] 45 | |            fn_traits,
[INFO] [stdout] 46 | |            unboxed_closures)]
[INFO] [stdout]    | |_____________________________^
[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 `lalrpop-lambda`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type rlib --crate-type cdylib --crate-name lalrpop_lambda src/lib.rs -o /opt/rustwide/target/doc --cfg 'feature="default"' --cfg 'feature="wasm"' --cfg 'feature="wasm-bindgen"' --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern lalrpop_util=/opt/rustwide/target/debug/deps/liblalrpop_util-53f622d2367bc3de.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-72b24043c7c12814.rmeta --extern wasm_bindgen=/opt/rustwide/target/debug/deps/libwasm_bindgen-10adbf3ea4bb8e59.rmeta --cap-lints=warn --crate-version 0.6.1` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "aecaafd4469ae1a8090f0a030176292100d2df283b18f3935660078509785dcd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aecaafd4469ae1a8090f0a030176292100d2df283b18f3935660078509785dcd", kill_on_drop: false }`
[INFO] [stdout] aecaafd4469ae1a8090f0a030176292100d2df283b18f3935660078509785dcd
