[INFO] cloning repository https://github.com/funmaker/rust-notifier
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/funmaker/rust-notifier" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffunmaker%2Frust-notifier", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffunmaker%2Frust-notifier'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 82f4231fa0af1080fe127d510ab66de7f7418b9e
[INFO] documenting funmaker/rust-notifier 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%2Ffunmaker%2Frust-notifier" "/workspace/builds/worker-34/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-34/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/funmaker/rust-notifier 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/funmaker/rust-notifier
[INFO] finished tweaking git repo https://github.com/funmaker/rust-notifier
[INFO] tweaked toml for git repo https://github.com/funmaker/rust-notifier written to /workspace/builds/worker-34/source/Cargo.toml
[INFO] crate git repo https://github.com/funmaker/rust-notifier 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] 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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ece273ef177728a6f645d2c8eeab232b91274b69185a37d0d384472679da10bc
[INFO] running `Command { std: "docker" "start" "-a" "ece273ef177728a6f645d2c8eeab232b91274b69185a37d0d384472679da10bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ece273ef177728a6f645d2c8eeab232b91274b69185a37d0d384472679da10bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ece273ef177728a6f645d2c8eeab232b91274b69185a37d0d384472679da10bc", kill_on_drop: false }`
[INFO] [stdout] ece273ef177728a6f645d2c8eeab232b91274b69185a37d0d384472679da10bc
[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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/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] ad0da0efe6c0d25a4786f14cf74e58bab3ebeda2a04db4aacfdd684c850d5ee9
[INFO] running `Command { std: "docker" "start" "-a" "ad0da0efe6c0d25a4786f14cf74e58bab3ebeda2a04db4aacfdd684c850d5ee9", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling syn v1.0.54
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[INFO] [stderr]    Compiling pin-project-internal v1.0.2
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[INFO] [stderr]    Compiling darling_macro v0.10.3
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[INFO] [stderr]     Checking h2 v0.2.7
[INFO] [stderr]     Checking futures-executor v0.3.8
[INFO] [stderr]     Checking tokio-tungstenite v0.11.0
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[INFO] [stderr]     Checking warp v0.2.5
[INFO] [stderr]     Checking reqwest v0.10.9
[INFO] [stderr]  Documenting rust-notifier 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(drain_filter)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(result_flattening)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(trace_macros)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(try_blocks)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(never_type)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 6 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 `rust-notifier`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name rust_notifier src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern arc_swap=/opt/rustwide/target/debug/deps/libarc_swap-043d2a5cebc9f257.rmeta --extern async_trait=/opt/rustwide/target/debug/deps/libasync_trait-4ac3da6849df8684.so --extern bytes=/opt/rustwide/target/debug/deps/libbytes-5a69d67e5415873b.rmeta --extern chrono=/opt/rustwide/target/debug/deps/libchrono-b0fcbf9ab7561b04.rmeta --extern err_derive=/opt/rustwide/target/debug/deps/liberr_derive-7ed2f95534d83afb.so --extern futures=/opt/rustwide/target/debug/deps/libfutures-ad964fdf85039800.rmeta --extern getopts=/opt/rustwide/target/debug/deps/libgetopts-8d1bb0c45a53763d.rmeta --extern itertools=/opt/rustwide/target/debug/deps/libitertools-6738c699ae19a4d9.rmeta --extern percent_encoding=/opt/rustwide/target/debug/deps/libpercent_encoding-ede8fd58102f5c41.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-9e8c984ff6f836bc.rmeta --extern reqwest=/opt/rustwide/target/debug/deps/libreqwest-5c98dedd572f0948.rmeta --extern rss=/opt/rustwide/target/debug/deps/librss-4f4f43ff2a1dde7b.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-3044ff3ad45808b3.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-2d554faa0c48826b.rmeta --extern tokio=/opt/rustwide/target/debug/deps/libtokio-83a9cbe077d9dbed.rmeta --extern warp=/opt/rustwide/target/debug/deps/libwarp-1cbdafd3844fbfb5.rmeta --cap-lints=warn --crate-version 1.0.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "ad0da0efe6c0d25a4786f14cf74e58bab3ebeda2a04db4aacfdd684c850d5ee9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ad0da0efe6c0d25a4786f14cf74e58bab3ebeda2a04db4aacfdd684c850d5ee9", kill_on_drop: false }`
[INFO] [stdout] ad0da0efe6c0d25a4786f14cf74e58bab3ebeda2a04db4aacfdd684c850d5ee9
