[INFO] fetching crate dep-obj 0.37.3...
[INFO] documenting dep-obj-0.37.3 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate dep-obj 0.37.3 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate dep-obj 0.37.3 on toolchain 1.61.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate dep-obj 0.37.3
[INFO] finished tweaking crates.io crate dep-obj 0.37.3
[INFO] tweaked toml for crates.io crate dep-obj 0.37.3 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate crates.io crate dep-obj 0.37.3 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded phantom-type v0.4.1
[INFO] [stderr]   Downloaded macro-attr-2018 v2.1.0
[INFO] [stderr]   Downloaded dyn-context-macro v0.0.4
[INFO] [stderr]   Downloaded try_match v0.3.0
[INFO] [stderr]   Downloaded generics v0.4.3
[INFO] [stderr]   Downloaded components-arena v3.0.1
[INFO] [stderr]   Downloaded components-arena-traits v1.0.0
[INFO] [stderr]   Downloaded try_match_inner v0.4.0
[INFO] [stderr]   Downloaded panicking v0.1.0
[INFO] [stderr]   Downloaded dyn-context v0.17.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "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] 193838c54aca1cf51738fc96c327299add8b0ca648cfacd33eabfa979cd961bd
[INFO] running `Command { std: "docker" "start" "-a" "193838c54aca1cf51738fc96c327299add8b0ca648cfacd33eabfa979cd961bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "193838c54aca1cf51738fc96c327299add8b0ca648cfacd33eabfa979cd961bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "193838c54aca1cf51738fc96c327299add8b0ca648cfacd33eabfa979cd961bd", kill_on_drop: false }`
[INFO] [stdout] 193838c54aca1cf51738fc96c327299add8b0ca648cfacd33eabfa979cd961bd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "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] 638639af86cf0952d4e136237339e7e7b417c719161bc2d2a955d505462f0cad
[INFO] running `Command { std: "docker" "start" "-a" "638639af86cf0952d4e136237339e7e7b417c719161bc2d2a955d505462f0cad", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.95
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]    Compiling serde v1.0.137
[INFO] [stderr]    Compiling adler v1.0.2
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling gimli v0.26.1
[INFO] [stderr]    Compiling unicode-xid v0.2.3
[INFO] [stderr]    Compiling semver v1.0.9
[INFO] [stderr]    Compiling rustc-demangle v0.1.21
[INFO] [stderr]    Compiling paste v1.0.7
[INFO] [stderr]     Checking panicking v0.1.0
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]    Compiling indoc v1.0.6
[INFO] [stderr]     Checking generics v0.4.3
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking components-arena-traits v1.0.0
[INFO] [stderr]     Checking downcast-rs v1.2.0
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/components-arena-traits-1.0.0/src/lib.rs:1:32
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![cfg_attr(feature="nightly", feature(const_trait_impl))]
[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]    Compiling num-bigint v0.4.3
[INFO] [stderr] error: could not compile `components-arena-traits` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "638639af86cf0952d4e136237339e7e7b417c719161bc2d2a955d505462f0cad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "638639af86cf0952d4e136237339e7e7b417c719161bc2d2a955d505462f0cad", kill_on_drop: false }`
[INFO] [stdout] 638639af86cf0952d4e136237339e7e7b417c719161bc2d2a955d505462f0cad