[INFO] fetching crate new-home-core 0.1.3...
[INFO] documenting new-home-core-0.1.3 against 1.46.0 for beta-1.47-rustdoc-1
[INFO] extracting crate new-home-core 0.1.3 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate new-home-core 0.1.3 on toolchain 1.46.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate new-home-core 0.1.3
[INFO] finished tweaking crates.io crate new-home-core 0.1.3
[INFO] tweaked toml for crates.io crate new-home-core 0.1.3 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate crates.io crate new-home-core 0.1.3 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+1.46.0" "metadata" "--no-deps" "--format-version=1", 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] bef1168668a30eadc538e4a4578dd5747cf7bc25df46e5a127bb000ba7501f0d
[INFO] running `Command { std: "docker" "start" "-a" "bef1168668a30eadc538e4a4578dd5747cf7bc25df46e5a127bb000ba7501f0d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bef1168668a30eadc538e4a4578dd5747cf7bc25df46e5a127bb000ba7501f0d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bef1168668a30eadc538e4a4578dd5747cf7bc25df46e5a127bb000ba7501f0d", kill_on_drop: false }`
[INFO] [stdout] bef1168668a30eadc538e4a4578dd5747cf7bc25df46e5a127bb000ba7501f0d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+1.46.0" "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] 6bb5737264ac7ecb81931845dd63e9a4af2424517c0097de5871fa275340bddc
[INFO] running `Command { std: "docker" "start" "-a" "6bb5737264ac7ecb81931845dd63e9a4af2424517c0097de5871fa275340bddc", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.3.0
[INFO] [stderr]    Compiling syn v1.0.14
[INFO] [stderr]     Checking smallvec v1.1.0
[INFO] [stderr]     Checking siphasher v0.2.3
[INFO] [stderr]     Checking chunked_transfer v0.3.1
[INFO] [stderr]     Checking ascii v0.8.7
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling brotli-sys v0.3.2
[INFO] [stderr]     Checking dirs v1.0.5
[INFO] [stderr]     Checking filetime v0.2.8
[INFO] [stderr]     Checking base64 v0.9.3
[INFO] [stderr]     Checking gzip-header v0.3.0
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]     Checking mime v0.2.6
[INFO] [stderr]     Checking tempdir v0.3.7
[INFO] [stderr]    Compiling unicase v1.4.2
[INFO] [stderr]    Compiling rand_xorshift v0.1.1
[INFO] [stderr]    Compiling rand_hc v0.1.0
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_isaac v0.1.1
[INFO] [stderr]     Checking term v0.5.2
[INFO] [stderr]     Checking phf_shared v0.7.24
[INFO] [stderr]     Checking deflate v0.7.20
[INFO] [stderr]     Checking unicode-normalization v0.1.12
[INFO] [stderr]     Checking phf v0.7.24
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking buf_redux v0.8.4
[INFO] [stderr]     Checking twoway v0.1.8
[INFO] [stderr]     Checking aho-corasick v0.7.10
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]    Compiling phf_codegen v0.7.24
[INFO] [stderr]     Checking regex v1.3.7
[INFO] [stderr]    Compiling mime_guess v1.8.7
[INFO] [stderr]     Checking url v1.7.2
[INFO] [stderr]     Checking tiny_http v0.6.2
[INFO] [stderr]     Checking multipart v0.15.4
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]     Checking brotli2 v0.3.2
[INFO] [stderr]     Checking serde v1.0.104
[INFO] [stderr]     Checking serde_json v1.0.45
[INFO] [stderr]     Checking serde_yaml v0.8.11
[INFO] [stderr]     Checking rouille v3.0.0
[INFO] [stderr]  Documenting new-home-core v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(fn_traits)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(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 3 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 `new-home-core`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name new_home_core 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 regex=/opt/rustwide/target/debug/deps/libregex-c5bcf22ca80f45c3.rmeta --extern rouille=/opt/rustwide/target/debug/deps/librouille-e529cdc9b95772f8.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-e96c571c97517ae0.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-1b4d8b094752b682.rmeta --extern serde_yaml=/opt/rustwide/target/debug/deps/libserde_yaml-63cf36b1d85f9663.rmeta --cap-lints=warn` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "6bb5737264ac7ecb81931845dd63e9a4af2424517c0097de5871fa275340bddc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6bb5737264ac7ecb81931845dd63e9a4af2424517c0097de5871fa275340bddc", kill_on_drop: false }`
[INFO] [stdout] 6bb5737264ac7ecb81931845dd63e9a4af2424517c0097de5871fa275340bddc