[INFO] fetching crate kunai 0.4.0...
[INFO] documenting kunai-0.4.0 against beta-2020-10-09 for beta-1.48-rustdoc-1
[INFO] extracting crate kunai 0.4.0 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate kunai 0.4.0 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 kunai 0.4.0
[INFO] finished tweaking crates.io crate kunai 0.4.0
[INFO] tweaked toml for crates.io crate kunai 0.4.0 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate crates.io crate kunai 0.4.0 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 rustc-ap-rustc_index v610.0.0
[INFO] [stderr]   Downloaded rustc-ap-arena v610.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_macros v610.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_errors v610.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_data_structures v610.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_lexer v610.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_target v610.0.0
[INFO] [stderr]   Downloaded rustc-ap-graphviz v610.0.0
[INFO] [stderr]   Downloaded rustc-ap-syntax_pos v610.0.0
[INFO] [stderr]   Downloaded rustc-ap-syntax v610.0.0
[INFO] [stderr]   Downloaded rustc-ap-serialize v610.0.0
[INFO] [stderr]   Downloaded rustfmt-nightly v1.4.11
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] e2b1d7ec8376aeba9e98f541d6605bef5bc9095db655ff8b22c88ec310829580
[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" "e2b1d7ec8376aeba9e98f541d6605bef5bc9095db655ff8b22c88ec310829580", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e2b1d7ec8376aeba9e98f541d6605bef5bc9095db655ff8b22c88ec310829580", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e2b1d7ec8376aeba9e98f541d6605bef5bc9095db655ff8b22c88ec310829580", kill_on_drop: false }`
[INFO] [stdout] e2b1d7ec8376aeba9e98f541d6605bef5bc9095db655ff8b22c88ec310829580
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] 0c1cbceff51f343ce92f3bbd1faca72eaf3119a7ce3ed815f3261c5642531787
[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" "0c1cbceff51f343ce92f3bbd1faca72eaf3119a7ce3ed815f3261c5642531787", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.11
[INFO] [stderr]    Compiling openssl v0.10.26
[INFO] [stderr]    Compiling either v1.5.3
[INFO] [stderr]     Checking rustc-ap-graphviz v610.0.0
[INFO] [stderr]     Checking new_debug_unreachable v1.0.3
[INFO] [stderr]    Compiling curl v0.4.25
[INFO] [stderr]    Compiling procedural-masquerade v0.1.6
[INFO] [stderr]    Compiling rustc-ap-rustc_target v610.0.0
[INFO] [stderr]     Checking nodrop v0.1.14
[INFO] [stderr]    Compiling rustc-ap-syntax v610.0.0
[INFO] [stderr]    Compiling rustfmt-nightly v1.4.11
[INFO] [stderr]     Checking thin-slice v0.1.1
[INFO] [stderr]     Checking home v0.5.1
[INFO] [stderr]     Checking hex v0.4.0
[INFO] [stderr]     Checking bytecount v0.6.0
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-ap-graphviz-610.0.0/lib.rs:277:1
[INFO] [stdout]     |
[INFO] [stdout] 277 | #![feature(rustc_private, nll)]
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking ego-tree v0.6.2
[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]     Checking lock_api v0.3.2
[INFO] [stderr]     Checking crossbeam-utils v0.6.5
[INFO] [stderr] error: could not compile `rustc-ap-graphviz`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/lock_api-0.3.2/src/lib.rs:89:34
[INFO] [stdout]    |
[INFO] [stdout] 89 | #![cfg_attr(feature = "nightly", feature(const_fn))]
[INFO] [stdout]    |                                  ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/crossbeam-utils-0.6.5/src/lib.rs:32:34
[INFO] [stdout]    |
[INFO] [stdout] 32 | #![cfg_attr(feature = "nightly", feature(alloc))]
[INFO] [stdout]    |                                  ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/crossbeam-utils-0.6.5/src/lib.rs:33:34
[INFO] [stdout]    |
[INFO] [stdout] 33 | #![cfg_attr(feature = "nightly", feature(cfg_target_has_atomic))]
[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] [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: build failed
[INFO] running `Command { std: "docker" "inspect" "0c1cbceff51f343ce92f3bbd1faca72eaf3119a7ce3ed815f3261c5642531787", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0c1cbceff51f343ce92f3bbd1faca72eaf3119a7ce3ed815f3261c5642531787", kill_on_drop: false }`
[INFO] [stdout] 0c1cbceff51f343ce92f3bbd1faca72eaf3119a7ce3ed815f3261c5642531787
