[INFO] cloning repository https://github.com/Windfisch/rocket-longpolling
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Windfisch/rocket-longpolling" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWindfisch%2Frocket-longpolling", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWindfisch%2Frocket-longpolling'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a674d5cec10fd76cb40023295e28b02007a550b8
[INFO] documenting Windfisch/rocket-longpolling against 1.61.0 for beta-1.62-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWindfisch%2Frocket-longpolling" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Windfisch/rocket-longpolling 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 git repo https://github.com/Windfisch/rocket-longpolling
[INFO] finished tweaking git repo https://github.com/Windfisch/rocket-longpolling
[INFO] tweaked toml for git repo https://github.com/Windfisch/rocket-longpolling written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/Windfisch/rocket-longpolling 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]     Updating git repository `https://github.com/SergioBenitez/Rocket`
[INFO] [stderr]     Updating git repository `https://github.com/SergioBenitez/cookie-rs.git`
[INFO] [stderr]     Updating git repository `https://github.com/SergioBenitez/Pear.git`
[INFO] [stderr]     Updating git repository `https://github.com/SergioBenitez/Devise.git`
[INFO] [stderr]     Updating git repository `https://github.com/SergioBenitez/proc-macro2-diagnostics.git`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded indexmap v1.5.2
[INFO] [stderr]   Downloaded const_fn v0.4.2
[INFO] [stderr]   Downloaded ubyte v0.9.1
[INFO] [stderr]   Downloaded standback v0.2.10
[INFO] [stderr]   Downloaded inlinable_string v0.1.11
[INFO] [stderr]   Downloaded time v0.2.17
[INFO] [stderr]   Downloaded hkdf v0.9.0
[INFO] [stderr]   Downloaded tracing-core v0.1.15
[INFO] [stderr]   Downloaded async-mutex v1.2.0
[INFO] [stderr]   Downloaded polling v0.1.8
[INFO] [stderr]   Downloaded async-std v1.6.3
[INFO] [stderr]   Downloaded dashmap v4.0.0-rc6
[INFO] [stderr]   Downloaded async-notify v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] [stdout] e7386c52afc946c5b1537b7e046358c2bb75eadf2e1f88f79f67aff4568d6031
[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" "e7386c52afc946c5b1537b7e046358c2bb75eadf2e1f88f79f67aff4568d6031", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e7386c52afc946c5b1537b7e046358c2bb75eadf2e1f88f79f67aff4568d6031", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e7386c52afc946c5b1537b7e046358c2bb75eadf2e1f88f79f67aff4568d6031", kill_on_drop: false }`
[INFO] [stdout] e7386c52afc946c5b1537b7e046358c2bb75eadf2e1f88f79f67aff4568d6031
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] 2b1bca71e1a6812ace9b44f6a4f74bba994b9eab7d3d7a673a4fcc0362ea5827
[INFO] running `Command { std: "docker" "start" "-a" "2b1bca71e1a6812ace9b44f6a4f74bba994b9eab7d3d7a673a4fcc0362ea5827", 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] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling futures-io v0.3.5
[INFO] [stderr]     Checking event-listener v2.4.0
[INFO] [stderr]     Checking cpuid-bool v0.1.2
[INFO] [stderr]     Checking inlinable_string v0.1.11
[INFO] [stderr]     Checking vec-arena v0.5.2
[INFO] [stderr]     Checking ubyte v0.9.1
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]    Compiling standback v0.2.10
[INFO] [stderr]    Compiling proc-macro2-diagnostics v0.1.0 (https://github.com/SergioBenitez/proc-macro2-diagnostics.git?rev=13fbb43#13fbb43d)
[INFO] [stderr]    Compiling time v0.2.17
[INFO] [stderr]    Compiling cookie v0.15.0-dev (https://github.com/SergioBenitez/cookie-rs.git?rev=3795f2e#3795f2e6)
[INFO] [stderr]    Compiling rocket_http v0.5.0-dev (https://github.com/SergioBenitez/Rocket?branch=master#dc2c6ecd)
[INFO] [stderr]    Compiling hashbrown v0.8.2
[INFO] [stderr]    Compiling indexmap v1.5.2
[INFO] [stderr]     Checking dashmap v4.0.0-rc6
[INFO] [stderr]    Compiling tracing-core v0.1.15
[INFO] [stderr]    Compiling rocket v0.5.0-dev (https://github.com/SergioBenitez/Rocket?branch=master#dc2c6ecd)
[INFO] [stderr]     Checking log v0.4.11
[INFO] [stderr]    Compiling proc-macro2 v1.0.20
[INFO] [stderr]     Checking async-mutex v1.2.0
[INFO] [stderr]     Checking multitask v0.2.0
[INFO] [stderr]     Checking async-channel v1.4.2
[INFO] [stderr]     Checking net2 v0.2.34
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking socket2 v0.3.12
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking futures-lite v0.1.11
[INFO] [stderr]     Checking toml v0.5.6
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking tracing v0.1.19
[INFO] [stderr]     Checking polling v0.1.8
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]     Checking kv-log-macro v1.0.7
[INFO] [stderr]     Checking mio v0.6.22
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking block-cipher v0.7.1
[INFO] [stderr]     Checking universal-hash v0.4.0
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking crypto-mac v0.8.0
[INFO] [stderr]     Checking block-buffer v0.9.0
[INFO] [stderr]     Checking aead v0.3.2
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking async-io v0.1.11
[INFO] [stderr]     Checking blocking v0.5.2
[INFO] [stderr]     Checking aes-soft v0.4.0
[INFO] [stderr]     Checking sha2 v0.9.1
[INFO] [stderr]    Compiling syn v1.0.39
[INFO] [stderr]     Checking hmac v0.8.1
[INFO] [stderr]     Checking polyval v0.4.0
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking ghash v0.3.0
[INFO] [stderr]     Checking aes v0.4.0
[INFO] [stderr]     Checking hkdf v0.9.0
[INFO] [stderr]     Checking mio-uds v0.6.8
[INFO] [stderr]     Checking async-executor v0.1.2
[INFO] [stderr]     Checking aes-gcm v0.6.0
[INFO] [stderr]     Checking async-std v1.6.3
[INFO] [stderr]     Checking uuid v0.8.1
[INFO] [stderr]    Compiling devise_core v0.3.0 (https://github.com/SergioBenitez/Devise.git?rev=1e42a2691#1e42a269)
[INFO] [stderr]    Compiling pin-project-internal v0.4.23
[INFO] [stderr]    Compiling futures-macro v0.3.5
[INFO] [stderr]    Compiling tokio-macros v0.2.5
[INFO] [stderr]    Compiling time-macros-impl v0.1.1
[INFO] [stderr]    Compiling pear_codegen v0.2.0-dev (https://github.com/SergioBenitez/Pear.git?rev=4b68055#4b680556)
[INFO] [stderr]    Compiling ref-cast-impl v1.0.2
[INFO] [stderr]    Compiling devise_codegen v0.3.0 (https://github.com/SergioBenitez/Devise.git?rev=1e42a2691#1e42a269)
[INFO] [stderr]    Compiling async-trait v0.1.40
[INFO] [stderr]    Compiling tokio v0.2.22
[INFO] [stderr]    Compiling ref-cast v1.0.2
[INFO] [stderr]    Compiling time-macros v0.1.0
[INFO] [stderr]    Compiling devise v0.3.0 (https://github.com/SergioBenitez/Devise.git?rev=1e42a2691#1e42a269)
[INFO] [stderr]    Compiling pear v0.2.0-dev (https://github.com/SergioBenitez/Pear.git?rev=4b68055#4b680556)
[INFO] [stderr]     Checking pin-project v0.4.23
[INFO] [stderr]     Checking futures-util v0.3.5
[INFO] [stderr]     Checking tokio-util v0.3.1
[INFO] [stderr]    Compiling h2 v0.2.6
[INFO] [stderr]     Checking futures-executor v0.3.5
[INFO] [stderr]     Checking async-notify v0.2.0
[INFO] [stderr]     Checking futures v0.3.5
[INFO] [stderr]    Compiling hyper v0.13.7
[INFO] [stderr]    Compiling rocket_codegen v0.5.0-dev (https://github.com/SergioBenitez/Rocket?branch=master#dc2c6ecd)
[INFO] [stderr]  Documenting rocket-longpolling v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(proc_macro_hygiene)]
[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 `rocket-longpolling`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name rocket_longpolling src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=5c15f641b4b7f9e4 -L dependency=/opt/rustwide/target/debug/deps --extern async_notify=/opt/rustwide/target/debug/deps/libasync_notify-8ae997ae4261b4ff.rmeta --extern async_std=/opt/rustwide/target/debug/deps/libasync_std-1d84d16e7a400ea5.rmeta --extern rocket=/opt/rustwide/target/debug/deps/librocket-247bf060fd53b836.rmeta --extern uuid=/opt/rustwide/target/debug/deps/libuuid-0a8a708a0aa795f4.rmeta --cap-lints=warn --crate-version 1.0.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "2b1bca71e1a6812ace9b44f6a4f74bba994b9eab7d3d7a673a4fcc0362ea5827", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2b1bca71e1a6812ace9b44f6a4f74bba994b9eab7d3d7a673a4fcc0362ea5827", kill_on_drop: false }`
[INFO] [stdout] 2b1bca71e1a6812ace9b44f6a4f74bba994b9eab7d3d7a673a4fcc0362ea5827