[INFO] cloning repository https://github.com/sgeisler/nym-chat
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sgeisler/nym-chat" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsgeisler%2Fnym-chat", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsgeisler%2Fnym-chat'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b9959ea21a903a99b3622b1b86c8f45406e9654b
[INFO] documenting sgeisler/nym-chat against 1.54.0 for beta-1.55-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsgeisler%2Fnym-chat" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sgeisler/nym-chat on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/sgeisler/nym-chat
[INFO] finished tweaking git repo https://github.com/sgeisler/nym-chat
[INFO] tweaked toml for git repo https://github.com/sgeisler/nym-chat written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/sgeisler/nym-chat already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--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-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 46ccacf8aa35fe8090b0ec3fbb21b9e1b322425b6b16cc52f6a2f6f290fcc8d7
[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" "46ccacf8aa35fe8090b0ec3fbb21b9e1b322425b6b16cc52f6a2f6f290fcc8d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "46ccacf8aa35fe8090b0ec3fbb21b9e1b322425b6b16cc52f6a2f6f290fcc8d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "46ccacf8aa35fe8090b0ec3fbb21b9e1b322425b6b16cc52f6a2f6f290fcc8d7", kill_on_drop: false }`
[INFO] [stdout] 46ccacf8aa35fe8090b0ec3fbb21b9e1b322425b6b16cc52f6a2f6f290fcc8d7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a4fc92f0fb6aec637b25463a45a81cb491b8cd549909cf97b0bbb4f8866ba28a
[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" "a4fc92f0fb6aec637b25463a45a81cb491b8cd549909cf97b0bbb4f8866ba28a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.95
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking cpufeatures v0.1.4
[INFO] [stderr]     Checking keystream v1.0.0
[INFO] [stderr]    Compiling openssl v0.10.34
[INFO] [stderr]     Checking smawk v0.3.1
[INFO] [stderr]     Checking cassowary v0.3.0
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]    Compiling blake3 v0.3.8
[INFO] [stderr]    Compiling tokio v1.6.0
[INFO] [stderr]     Checking ed25519 v1.1.1
[INFO] [stderr]    Compiling openssl-sys v0.9.63
[INFO] [stderr]     Checking version-checker v0.1.0 (https://github.com/nymtech/nym?tag=v0.9.2#c2a1ed85)
[INFO] [stderr]     Checking tokio v0.2.25
[INFO] [stderr]     Checking crypto-mac v0.7.0
[INFO] [stderr]     Checking block-cipher-trait v0.6.2
[INFO] [stderr]     Checking stream-cipher v0.3.2
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling tokio-macros v1.2.0
[INFO] [stderr]    Compiling futures-macro v0.3.15
[INFO] [stderr]    Compiling pin-project-internal v1.0.7
[INFO] [stderr]     Checking url v2.2.2
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking pem v0.7.0
[INFO] [stderr]     Checking textwrap v0.13.4
[INFO] [stderr]     Checking tracing v0.1.26
[INFO] [stderr]     Checking blake2 v0.8.1
[INFO] [stderr]     Checking hmac v0.7.1
[INFO] [stderr]     Checking ctr v0.3.2
[INFO] [stderr]     Checking serde_json v1.0.64
[INFO] [stderr]     Checking serde_urlencoded v0.7.0
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking chacha v0.3.0
[INFO] [stderr]     Checking aes-soft v0.3.3
[INFO] [stderr]     Checking regex-automata v0.1.9
[INFO] [stderr]     Checking pemstore v0.1.0 (https://github.com/nymtech/nym?tag=v0.9.2#c2a1ed85)
[INFO] [stderr]     Checking hkdf v0.8.0
[INFO] [stderr]     Checking sha2 v0.8.2
[INFO] [stderr]    Compiling structopt-derive v0.4.14
[INFO] [stderr]     Checking lioness v0.1.2
[INFO] [stderr]     Checking aes-ctr v0.3.0
[INFO] [stderr]     Checking tokio-util v0.3.1
[INFO] [stderr]    Compiling native-tls v0.2.7
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking block-buffer v0.9.0
[INFO] [stderr]     Checking block-cipher v0.7.1
[INFO] [stderr]     Checking crypto-mac v0.8.0
[INFO] [stderr]     Checking universal-hash v0.4.0
[INFO] [stderr]     Checking cipher v0.3.0
[INFO] [stderr]     Checking aead v0.4.1
[INFO] [stderr]     Checking stream-cipher v0.4.1
[INFO] [stderr]     Checking aes-soft v0.4.0
[INFO] [stderr]     Checking matchers v0.0.1
[INFO] [stderr]     Checking hmac v0.8.1
[INFO] [stderr]    Compiling zeroize_derive v1.1.0
[INFO] [stderr]     Checking polyval v0.5.0
[INFO] [stderr]     Checking sha2 v0.9.5
[INFO] [stderr]     Checking sha-1 v0.9.6
[INFO] [stderr]     Checking aes v0.7.3
[INFO] [stderr]     Checking ctr v0.7.0
[INFO] [stderr]     Checking ctr v0.4.0
[INFO] [stderr]     Checking getrandom v0.1.16
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking mio v0.7.11
[INFO] [stderr]     Checking parking_lot_core v0.8.3
[INFO] [stderr]     Checking signal-hook-registry v1.3.0
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking socket2 v0.4.0
[INFO] [stderr]     Checking hkdf v0.9.0
[INFO] [stderr]     Checking ghash v0.4.1
[INFO] [stderr]     Checking env_logger v0.6.2
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking aes-ctr v0.4.0
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking futures-util v0.3.15
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking headers v0.3.4
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]     Checking rand_core v0.6.2
[INFO] [stderr]     Checking aes-gcm v0.9.1
[INFO] [stderr]     Checking signal-hook v0.1.17
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking crossterm v0.19.0
[INFO] [stderr]     Checking pin-project v1.0.7
[INFO] [stderr]     Checking rand v0.8.3
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking zeroize v1.3.0
[INFO] [stderr]     Checking curve25519-dalek v3.1.0
[INFO] [stderr]     Checking tui v0.15.0
[INFO] [stderr]     Checking pretty_env_logger v0.3.1
[INFO] [stderr]     Checking tracing-subscriber v0.2.18
[INFO] [stderr]     Checking tungstenite v0.12.0
[INFO] [stderr]     Checking tempfile v3.2.0
[INFO] [stderr]     Checking rand_distr v0.2.2
[INFO] [stderr]     Checking multipart v0.17.1
[INFO] [stderr]     Checking tuirealm v0.3.0
[INFO] [stderr]     Checking sphinx v0.1.0 (https://github.com/nymtech/sphinx?rev=283dcc77dec8ee9ed3bed58c2b878e9c18320723#283dcc77)
[INFO] [stderr]     Checking ed25519-dalek v1.0.1
[INFO] [stderr]     Checking x25519-dalek v1.1.1
[INFO] [stderr]     Checking structopt v0.3.21
[INFO] [stderr]     Checking futures-executor v0.3.15
[INFO] [stderr]     Checking nymsphinx-types v0.1.0 (https://github.com/nymtech/nym?tag=v0.9.2#c2a1ed85)
[INFO] [stderr]     Checking crypto v0.1.0 (https://github.com/nymtech/nym?tag=v0.9.2#c2a1ed85)
[INFO] [stderr]     Checking futures v0.3.15
[INFO] [stderr]     Checking tokio-util v0.6.7
[INFO] [stderr]     Checking tokio-native-tls v0.3.0
[INFO] [stderr]     Checking tokio-tungstenite v0.13.0
[INFO] [stderr]     Checking tokio-stream v0.1.6
[INFO] [stderr]     Checking nymsphinx-params v0.1.0 (https://github.com/nymtech/nym?tag=v0.9.2#c2a1ed85)
[INFO] [stderr]     Checking nymsphinx-addressing v0.1.0 (https://github.com/nymtech/nym?tag=v0.9.2#c2a1ed85)
[INFO] [stderr]     Checking nymsphinx-framing v0.1.0 (https://github.com/nymtech/nym?tag=v0.9.2#c2a1ed85)
[INFO] [stderr]     Checking h2 v0.3.3
[INFO] [stderr]     Checking topology v0.1.0 (https://github.com/nymtech/nym?tag=v0.9.2#c2a1ed85)
[INFO] [stderr]     Checking nymsphinx-chunking v0.1.0 (https://github.com/nymtech/nym?tag=v0.9.2#c2a1ed85)
[INFO] [stderr]     Checking nymsphinx-forwarding v0.1.0 (https://github.com/nymtech/nym?tag=v0.9.2#c2a1ed85)
[INFO] [stderr]     Checking nymsphinx-acknowledgements v0.1.0 (https://github.com/nymtech/nym?tag=v0.9.2#c2a1ed85)
[INFO] [stderr]     Checking nymsphinx-anonymous-replies v0.1.0 (https://github.com/nymtech/nym?tag=v0.9.2#c2a1ed85)
[INFO] [stderr]     Checking nymsphinx-cover v0.1.0 (https://github.com/nymtech/nym?tag=v0.9.2#c2a1ed85)
[INFO] [stderr]     Checking nymsphinx v0.1.0 (https://github.com/nymtech/nym?tag=v0.9.2#c2a1ed85)
[INFO] [stderr]     Checking websocket-requests v0.1.0 (https://github.com/nymtech/nym?tag=v0.9.2#c2a1ed85)
[INFO] [stderr]     Checking hyper v0.14.8
[INFO] [stderr]     Checking hyper-tls v0.5.0
[INFO] [stderr]     Checking warp v0.3.1
[INFO] [stderr]     Checking reqwest v0.11.3
[INFO] [stderr]     Checking nym-chat v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting nym-chat v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/bin/server.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(async_closure)]
[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 `nym-chat`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name server src/bin/server.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern aes_gcm=/opt/rustwide/target/debug/deps/libaes_gcm-af6754b86e583c68.rmeta --extern anyhow=/opt/rustwide/target/debug/deps/libanyhow-ed234740686b5bee.rmeta --extern bincode=/opt/rustwide/target/debug/deps/libbincode-f2702bcabac17327.rmeta --extern crossterm=/opt/rustwide/target/debug/deps/libcrossterm-296965d99efc37d9.rmeta --extern futures=/opt/rustwide/target/debug/deps/libfutures-970e5f25de5603c8.rmeta --extern generic_array=/opt/rustwide/target/debug/deps/libgeneric_array-2623440de4728ed1.rmeta --extern hex=/opt/rustwide/target/debug/deps/libhex-4e132399b961d086.rmeta --extern nym_chat=/opt/rustwide/target/debug/deps/libnym_chat-3233a4cb389d94b7.rmeta --extern nym_addressing=/opt/rustwide/target/debug/deps/libnymsphinx_addressing-7d4daa41572ab696.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-b5068ccbbcdfc858.rmeta --extern reqwest=/opt/rustwide/target/debug/deps/libreqwest-621c00f9fc183db0.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-40674dd61ccb948f.rmeta --extern structopt=/opt/rustwide/target/debug/deps/libstructopt-ddae82ff0688ce88.rmeta --extern tokio=/opt/rustwide/target/debug/deps/libtokio-340fd9c908d01014.rmeta --extern tokio_tungstenite=/opt/rustwide/target/debug/deps/libtokio_tungstenite-4d1361a6cb8a4d89.rmeta --extern tracing=/opt/rustwide/target/debug/deps/libtracing-21e3e1512d22fe25.rmeta --extern tracing_subscriber=/opt/rustwide/target/debug/deps/libtracing_subscriber-b00e05212a13c72a.rmeta --extern tuirealm=/opt/rustwide/target/debug/deps/libtuirealm-da2efab3231c4a38.rmeta --extern warp=/opt/rustwide/target/debug/deps/libwarp-a1ef81fd1ded8e4c.rmeta --extern nym_websocket=/opt/rustwide/target/debug/deps/libwebsocket_requests-be3be05e02482763.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "a4fc92f0fb6aec637b25463a45a81cb491b8cd549909cf97b0bbb4f8866ba28a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a4fc92f0fb6aec637b25463a45a81cb491b8cd549909cf97b0bbb4f8866ba28a", kill_on_drop: false }`
[INFO] [stdout] a4fc92f0fb6aec637b25463a45a81cb491b8cd549909cf97b0bbb4f8866ba28a
