[INFO] fetching crate qtmon 0.1.1...
[INFO] documenting qtmon-0.1.1 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate qtmon 0.1.1 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate qtmon 0.1.1 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 crates.io crate qtmon 0.1.1
[INFO] finished tweaking crates.io crate qtmon 0.1.1
[INFO] tweaked toml for crates.io crate qtmon 0.1.1 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate crates.io crate qtmon 0.1.1 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 }`
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[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded wasm-bindgen-test v0.3.18
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[INFO] [stdout] 84746267f5b7ff5734e0b70fb7ce8f8e46e37e0990844eb4156e902e125f65a5
[INFO] running `Command { std: "docker" "start" "-a" "84746267f5b7ff5734e0b70fb7ce8f8e46e37e0990844eb4156e902e125f65a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "84746267f5b7ff5734e0b70fb7ce8f8e46e37e0990844eb4156e902e125f65a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "84746267f5b7ff5734e0b70fb7ce8f8e46e37e0990844eb4156e902e125f65a5", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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 }`
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[INFO] [stderr]     Checking reqwest v0.10.9
[INFO] [stderr]     Checking questrade-rs v0.1.1
[INFO] [stderr]  Documenting qtmon v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(drain_filter)]
[INFO] [stdout]   |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[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 document `qtmon`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name qtmon src/main.rs -o /opt/rustwide/target/doc --cfg 'feature="default"' --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=30494ff944590b4e -L dependency=/opt/rustwide/target/debug/deps --extern chrono=/opt/rustwide/target/debug/deps/libchrono-716ded3168dc5e74.rmeta --extern clap=/opt/rustwide/target/debug/deps/libclap-d0144fc340251b90.rmeta --extern dirs=/opt/rustwide/target/debug/deps/libdirs-c663717eb2ac3e59.rmeta --extern flexi_logger=/opt/rustwide/target/debug/deps/libflexi_logger-b16a71b208e5482d.rmeta --extern futures=/opt/rustwide/target/debug/deps/libfutures-1d986f7142ebc87a.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-2be53ef7d3962f41.rmeta --extern questrade_rs=/opt/rustwide/target/debug/deps/libquestrade_rs-30c10a9a791212e7.rmeta --extern reqwest=/opt/rustwide/target/debug/deps/libreqwest-83da8d0cbd7bc356.rmeta --extern ron=/opt/rustwide/target/debug/deps/libron-4b19637121dba8d2.rmeta --extern rustbreak=/opt/rustwide/target/debug/deps/librustbreak-b3017ebb4a0aa271.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-bd589a211cd8f848.rmeta --extern tokio=/opt/rustwide/target/debug/deps/libtokio-ddf84b3e8f8e1c88.rmeta --extern warp=/opt/rustwide/target/debug/deps/libwarp-8ccf91b4424f4994.rmeta --cap-lints=warn --crate-version 0.1.1` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "0d2a4d17a6913dcf000518c986a9881ee1046cf7e378cf8845920855b9af7d5b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0d2a4d17a6913dcf000518c986a9881ee1046cf7e378cf8845920855b9af7d5b", kill_on_drop: false }`
[INFO] [stdout] 0d2a4d17a6913dcf000518c986a9881ee1046cf7e378cf8845920855b9af7d5b