[INFO] cloning repository https://github.com/SchrodingerZhu/girasol
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/SchrodingerZhu/girasol" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSchrodingerZhu%2Fgirasol", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSchrodingerZhu%2Fgirasol'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 85b81563a96e9ab5657870b0d00875a1e122a2cf
[INFO] documenting SchrodingerZhu/girasol against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSchrodingerZhu%2Fgirasol" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/SchrodingerZhu/girasol on toolchain beta-2020-08-29
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/SchrodingerZhu/girasol
[INFO] finished tweaking git repo https://github.com/SchrodingerZhu/girasol
[INFO] tweaked toml for git repo https://github.com/SchrodingerZhu/girasol written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/SchrodingerZhu/girasol already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/SchrodingerZhu/ws_stream_tungstenite`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded piper v0.1.3
[INFO] [stderr]   Downloaded kv-log-macro v1.0.6
[INFO] [stderr]   Downloaded async-tungstenite v0.5.0
[INFO] [stderr]   Downloaded fail v0.3.0
[INFO] [stderr]   Downloaded structopt v0.3.14
[INFO] [stderr]   Downloaded smol v0.1.11
[INFO] [stderr]   Downloaded async_io_stream v0.1.0
[INFO] [stderr]   Downloaded async-std v1.6.0
[INFO] [stderr]   Downloaded structopt-derive v0.4.7
[INFO] [stderr]   Downloaded thiserror v1.0.19
[INFO] [stderr]   Downloaded typename v0.1.2
[INFO] [stderr]   Downloaded systemstat v0.1.5
[INFO] [stderr]   Downloaded pharos v0.4.2
[INFO] [stderr]   Downloaded zstd-safe v2.0.4+zstd.1.4.5
[INFO] [stderr]   Downloaded async-tls v0.7.0
[INFO] [stderr]   Downloaded pin-project-lite v0.1.6
[INFO] [stderr]   Downloaded zstd-sys v1.4.16+zstd.1.4.5
[INFO] [stderr]   Downloaded typename_derive v0.1.4
[INFO] [stderr]   Downloaded webpki-roots v0.19.0
[INFO] [stderr]   Downloaded xactor v0.6.6
[INFO] [stderr]   Downloaded snmalloc-rs v0.2.14
[INFO] [stderr]   Downloaded gloo-timers v0.2.1
[INFO] [stderr]   Downloaded wepoll-binding v2.0.2
[INFO] [stderr]   Downloaded thiserror-impl v1.0.19
[INFO] [stderr]   Downloaded value-trait v0.1.10
[INFO] [stderr]   Downloaded simd-json v0.3.9
[INFO] [stderr]   Downloaded fs2 v0.4.3
[INFO] [stderr]   Downloaded bytesize v1.0.1
[INFO] [stderr]   Downloaded ahash v0.3.5
[INFO] [stderr]   Downloaded zstd v0.5.2+zstd.1.4.5
[INFO] [stderr]   Downloaded send_wrapper v0.4.0
[INFO] [stderr]   Downloaded ctrlc v3.1.4
[INFO] [stderr]   Downloaded sled v0.31.0
[INFO] [stderr]   Downloaded halfbrown v0.1.11
[INFO] [stderr]   Downloaded async-trait v0.1.33
[INFO] [stderr]   Downloaded scoped-tls-hkt v0.1.2
[INFO] [stderr]   Downloaded wepoll-sys v2.0.0
[INFO] [stderr]   Downloaded snmalloc-sys v0.2.14
[INFO] [stderr]   Downloaded xactor-derive v0.6.6
[INFO] [stderr]   Downloaded ring v0.16.14
[INFO] [stderr]   Downloaded rio v0.9.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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-2020-08-29" "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] 8b64179a6cd6f51089f8961b0c6f55c3721f74e5b6632423327b94b7c6adca14
[INFO] running `Command { std: "docker" "start" "-a" "8b64179a6cd6f51089f8961b0c6f55c3721f74e5b6632423327b94b7c6adca14", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8b64179a6cd6f51089f8961b0c6f55c3721f74e5b6632423327b94b7c6adca14", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8b64179a6cd6f51089f8961b0c6f55c3721f74e5b6632423327b94b7c6adca14", kill_on_drop: false }`
[INFO] [stdout] 8b64179a6cd6f51089f8961b0c6f55c3721f74e5b6632423327b94b7c6adca14
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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-2020-08-29" "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] fe90d3583719d89d5b9300385016b4b1dd44781703f6e0b4a86ae2b31a594de3
[INFO] running `Command { std: "docker" "start" "-a" "fe90d3583719d89d5b9300385016b4b1dd44781703f6e0b4a86ae2b31a594de3", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]    Compiling syn v1.0.30
[INFO] [stderr]     Checking once_cell v1.4.0
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]     Checking futures-io v0.3.5
[INFO] [stderr]    Compiling serde v1.0.111
[INFO] [stderr]     Checking itoa v0.4.5
[INFO] [stderr]     Checking async-task v3.0.0
[INFO] [stderr]     Checking scoped-tls-hkt v0.1.2
[INFO] [stderr]     Checking pin-project-lite v0.1.6
[INFO] [stderr]    Compiling nix v0.17.0
[INFO] [stderr]     Checking bytesize v1.0.1
[INFO] [stderr]     Checking encode_unicode v0.3.6
[INFO] [stderr]    Compiling hashbrown v0.7.2
[INFO] [stderr]    Compiling itertools v0.9.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.2
[INFO] [stderr]    Compiling proc-macro-error v1.0.2
[INFO] [stderr]    Compiling quote v1.0.6
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]     Checking regex-automata v0.1.9
[INFO] [stderr]     Checking futures-task v0.3.5
[INFO] [stderr]    Compiling ws_stream_tungstenite v0.1.0 (https://github.com/SchrodingerZhu/ws_stream_tungstenite#fa64ef57)
[INFO] [stderr]     Checking crossbeam-queue v0.2.2
[INFO] [stderr]     Checking float-cmp v0.6.0
[INFO] [stderr]     Checking http v0.2.1
[INFO] [stderr]     Checking sha-1 v0.8.2
[INFO] [stderr]     Checking kv-log-macro v1.0.6
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]     Checking socket2 v0.3.12
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking dirs v1.0.5
[INFO] [stderr]     Checking parking_lot_core v0.7.2
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking memchr v1.0.2
[INFO] [stderr]     Checking fs2 v0.4.3
[INFO] [stderr]     Checking rio v0.9.3
[INFO] [stderr]     Checking clap v2.33.1
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking term v0.5.2
[INFO] [stderr]     Checking nom v3.2.1
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking parking_lot v0.10.2
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking chrono v0.4.11
[INFO] [stderr]     Checking pretty_env_logger v0.4.0
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]    Compiling jobserver v0.1.21
[INFO] [stderr]    Compiling cc v1.0.54
[INFO] [stderr]    Compiling const-random-macro v0.1.8
[INFO] [stderr]     Checking fail v0.3.0
[INFO] [stderr]     Checking const-random v0.1.8
[INFO] [stderr]    Compiling cmake v0.1.44
[INFO] [stderr]     Checking ahash v0.3.5
[INFO] [stderr]     Checking systemstat v0.1.5
[INFO] [stderr]     Checking rand_distr v0.2.2
[INFO] [stderr]     Checking tempfile v3.1.0
[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/hashbrown-0.7.2/src/lib.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | /     feature(
[INFO] [stdout] 16 | |         alloc_layout_extra,
[INFO] [stdout] 17 | |         allocator_api,
[INFO] [stdout] 18 | |         ptr_offset_from,
[INFO] [stdout] ...  |
[INFO] [stdout] 22 | |         specialization,
[INFO] [stdout] 23 | |     )
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling ring v0.16.14
[INFO] [stderr]    Compiling openssl-sys v0.9.57
[INFO] [stderr]    Compiling zstd-sys v1.4.16+zstd.1.4.5
[INFO] [stderr]    Compiling snmalloc-sys v0.2.14
[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] error: could not compile `hashbrown`.
[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] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "fe90d3583719d89d5b9300385016b4b1dd44781703f6e0b4a86ae2b31a594de3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe90d3583719d89d5b9300385016b4b1dd44781703f6e0b4a86ae2b31a594de3", kill_on_drop: false }`
[INFO] [stdout] fe90d3583719d89d5b9300385016b4b1dd44781703f6e0b4a86ae2b31a594de3