[INFO] fetching crate rss-forwarder 0.6.0-alpha.0...
[INFO] documenting rss-forwarder-0.6.0-alpha.0 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate rss-forwarder 0.6.0-alpha.0 into /workspace/builds/worker-34/source
[INFO] validating manifest of crates.io crate rss-forwarder 0.6.0-alpha.0 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] removed /workspace/builds/worker-34/source/.cargo/config.toml
[INFO] started tweaking crates.io crate rss-forwarder 0.6.0-alpha.0
[INFO] finished tweaking crates.io crate rss-forwarder 0.6.0-alpha.0
[INFO] tweaked toml for crates.io crate rss-forwarder 0.6.0-alpha.0 written to /workspace/builds/worker-34/source/Cargo.toml
[INFO] crate crates.io crate rss-forwarder 0.6.0-alpha.0 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pico-args v0.4.2
[INFO] [stderr]   Downloaded slack-bk v0.1.1
[INFO] [stderr]   Downloaded html2text v0.3.1
[INFO] [stderr]   Downloaded syn v1.0.89
[INFO] [stderr]   Downloaded markup5ever v0.10.1
[INFO] [stderr]   Downloaded xml5ever v0.16.2
[INFO] [stderr]   Downloaded tendril v0.4.2
[INFO] [stderr]   Downloaded string_cache v0.8.3
[INFO] [stderr]   Downloaded tracing-subscriber v0.3.9
[INFO] [stderr]   Downloaded redox_syscall v0.2.11
[INFO] [stderr]   Downloaded quote v1.0.16
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-34/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-34/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] 3dbca0295d10dec584e8ab68519f3abb3fa517551526c6220002a7cf41f5c935
[INFO] running `Command { std: "docker" "start" "-a" "3dbca0295d10dec584e8ab68519f3abb3fa517551526c6220002a7cf41f5c935", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3dbca0295d10dec584e8ab68519f3abb3fa517551526c6220002a7cf41f5c935", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3dbca0295d10dec584e8ab68519f3abb3fa517551526c6220002a7cf41f5c935", kill_on_drop: false }`
[INFO] [stdout] 3dbca0295d10dec584e8ab68519f3abb3fa517551526c6220002a7cf41f5c935
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-34/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-34/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] [stdout] 941c1b9cd5760e3d6827c6b7329f02d9a4dc687d72b23bc0f81704a642008d51
[INFO] running `Command { std: "docker" "start" "-a" "941c1b9cd5760e3d6827c6b7329f02d9a4dc687d72b23bc0f81704a642008d51", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.89
[INFO] [stderr]    Compiling libc v0.2.121
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling log v0.4.16
[INFO] [stderr]     Checking smallvec v1.8.0
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]    Compiling ppv-lite86 v0.2.16
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling siphasher v0.3.10
[INFO] [stderr]     Checking once_cell v1.10.0
[INFO] [stderr]    Compiling parking_lot_core v0.9.1
[INFO] [stderr]    Compiling pkg-config v0.3.24
[INFO] [stderr]     Checking pin-project-lite v0.2.8
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]    Compiling futures-core v0.3.21
[INFO] [stderr]     Checking new_debug_unreachable v1.0.4
[INFO] [stderr]     Checking itoa v1.0.1
[INFO] [stderr]    Compiling futures-task v0.3.21
[INFO] [stderr]     Checking mac v0.1.1
[INFO] [stderr]    Compiling openssl v0.10.38
[INFO] [stderr]     Checking precomputed-hash v0.1.1
[INFO] [stderr]    Compiling futures-util v0.3.21
[INFO] [stderr]     Checking utf-8 v0.7.6
[INFO] [stderr]    Compiling encoding_rs v0.8.30
[INFO] [stderr]     Checking futures-sink v0.3.21
[INFO] [stderr]    Compiling futures-channel v0.3.21
[INFO] [stderr]    Compiling httparse v1.6.0
[INFO] [stderr]     Checking slab v0.4.5
[INFO] [stderr]    Compiling fs_extra v1.2.0
[INFO] [stderr]     Checking openssl-probe v0.1.5
[INFO] [stderr]     Checking ryu v1.0.9
[INFO] [stderr]    Compiling serde_json v1.0.79
[INFO] [stderr]     Checking unicode-bidi v0.3.7
[INFO] [stderr]     Checking httpdate v1.0.2
[INFO] [stderr]    Compiling async-trait v0.1.52
[INFO] [stderr]     Checking ipnet v2.4.0
[INFO] [stderr]     Checking ansi_term v0.12.1
[INFO] [stderr]     Checking humantime v2.1.0
[INFO] [stderr]     Checking unicode-width v0.1.9
[INFO] [stderr]     Checking pico-args v0.4.2
[INFO] [stderr]     Checking instant v0.1.12
[INFO] [stderr]     Checking tracing-core v0.1.23
[INFO] [stderr]     Checking tinyvec v1.5.1
[INFO] [stderr]     Checking sharded-slab v0.1.4
[INFO] [stderr]     Checking lock_api v0.4.6
[INFO] [stderr]    Compiling phf_shared v0.8.0
[INFO] [stderr]     Checking futf v0.1.5
[INFO] [stderr]     Checking phf_shared v0.10.0
[INFO] [stderr]     Checking phf v0.8.0
[INFO] [stderr]     Checking http v0.2.6
[INFO] [stderr]     Checking tendril v0.4.2
[INFO] [stderr]     Checking thread_local v1.1.4
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling indexmap v1.8.0
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]     Checking tracing-log v0.1.2
[INFO] [stderr]     Checking socket2 v0.4.4
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking mio v0.8.2
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking unicode-normalization v0.1.19
[INFO] [stderr]    Compiling quote v1.0.16
[INFO] [stderr]     Checking tracing-subscriber v0.3.9
[INFO] [stderr]     Checking parking_lot v0.12.0
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling openssl-sys v0.9.72
[INFO] [stderr]    Compiling jemalloc-sys v0.3.2
[INFO] [stderr]    Compiling rand_pcg v0.2.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]     Checking quick-xml v0.22.0
[INFO] [stderr]     Checking idna v0.2.3
[INFO] [stderr]     Checking rss v2.0.0
[INFO] [stderr]     Checking http-body v0.4.4
[INFO] [stderr]    Compiling native-tls v0.2.8
[INFO] [stderr]    Compiling phf_generator v0.8.0
[INFO] [stderr]    Compiling string_cache_codegen v0.5.1
[INFO] [stderr]    Compiling phf_codegen v0.8.0
[INFO] [stderr]     Checking url v2.2.2
[INFO] [stderr]    Compiling markup5ever v0.10.1
[INFO] [stderr]    Compiling tokio-macros v1.7.0
[INFO] [stderr]    Compiling tracing-attributes v0.1.20
[INFO] [stderr]    Compiling html5ever v0.25.1
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]     Checking tokio v1.17.0
[INFO] [stderr]     Checking tracing v0.1.32
[INFO] [stderr]     Checking thiserror v1.0.30
[INFO] [stderr]     Checking tokio-util v0.6.9
[INFO] [stderr]     Checking tokio-native-tls v0.3.0
[INFO] [stderr]     Checking h2 v0.3.12
[INFO] [stderr]     Checking string_cache v0.8.3
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking serde_urlencoded v0.7.1
[INFO] [stderr]     Checking slack-bk v0.1.1
[INFO] [stderr]     Checking toml v0.5.8
[INFO] [stderr]     Checking humantime-serde v1.1.1
[INFO] [stderr]     Checking hyper v0.14.18
[INFO] [stderr]     Checking diligent-date-parser v0.1.3
[INFO] [stderr]     Checking xml5ever v0.16.2
[INFO] [stderr]     Checking atom_syndication v0.11.0
[INFO] [stderr]     Checking markup5ever_rcdom v0.1.0
[INFO] [stderr]     Checking hyper-tls v0.5.0
[INFO] [stderr]     Checking reqwest v0.11.10
[INFO] [stderr]     Checking html2text v0.3.1
[INFO] [stderr]     Checking jemallocator v0.3.2
[INFO] [stderr]  Documenting rss-forwarder v0.6.0-alpha.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `tokio::task::JoinSet`
[INFO] [stdout]   --> src/main.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     task::JoinSet,
[INFO] [stdout]    |     ^^^^^^^^^^^^^ no `JoinSet` in `task`
[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 E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `rss-forwarder`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type bin --crate-name rss_forwarder src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=00ebb61318a5d91c -L dependency=/opt/rustwide/target/debug/deps --extern async_trait=/opt/rustwide/target/debug/deps/libasync_trait-faa14fe4413de87a.so --extern atom_syndication=/opt/rustwide/target/debug/deps/libatom_syndication-dd0da7591e82effc.rmeta --extern chrono=/opt/rustwide/target/debug/deps/libchrono-584f7ce0d59d010b.rmeta --extern html2text=/opt/rustwide/target/debug/deps/libhtml2text-7ca69a79cd16fdbd.rmeta --extern humantime_serde=/opt/rustwide/target/debug/deps/libhumantime_serde-2e2a8a2faf878001.rmeta --extern jemallocator=/opt/rustwide/target/debug/deps/libjemallocator-4fb3155b80078163.rmeta --extern pico_args=/opt/rustwide/target/debug/deps/libpico_args-35e635e9e47d257d.rmeta --extern reqwest=/opt/rustwide/target/debug/deps/libreqwest-2f068a110631e9ca.rmeta --extern rss=/opt/rustwide/target/debug/deps/librss-7f706345d8876043.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-45f52893634b366b.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-ddf6b412b64e2fc6.rmeta --extern slack_bk=/opt/rustwide/target/debug/deps/libslack_bk-4d1b2cf0b6c6aa63.rmeta --extern thiserror=/opt/rustwide/target/debug/deps/libthiserror-b771c14e6f736eab.rmeta --extern tokio=/opt/rustwide/target/debug/deps/libtokio-7b8f902d854ba5e1.rmeta --extern toml=/opt/rustwide/target/debug/deps/libtoml-cea6c6ac1c511780.rmeta --extern tracing=/opt/rustwide/target/debug/deps/libtracing-7dad9a288bd55ee0.rmeta --extern tracing_subscriber=/opt/rustwide/target/debug/deps/libtracing_subscriber-7d2340127cf93d9c.rmeta --cap-lints=warn --crate-version 0.6.0-alpha.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "941c1b9cd5760e3d6827c6b7329f02d9a4dc687d72b23bc0f81704a642008d51", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "941c1b9cd5760e3d6827c6b7329f02d9a4dc687d72b23bc0f81704a642008d51", kill_on_drop: false }`
[INFO] [stdout] 941c1b9cd5760e3d6827c6b7329f02d9a4dc687d72b23bc0f81704a642008d51