[INFO] cloning repository https://github.com/leo60228/mpdiscord
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/leo60228/mpdiscord" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fleo60228%2Fmpdiscord", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fleo60228%2Fmpdiscord'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] acd7541b7a3003c7c8915f409958e2ac9afd14ce
[INFO] documenting leo60228/mpdiscord against 1.69.0 for beta-1.70-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fleo60228%2Fmpdiscord" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/leo60228/mpdiscord on toolchain 1.69.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.69.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/leo60228/mpdiscord
[INFO] finished tweaking git repo https://github.com/leo60228/mpdiscord
[INFO] tweaked toml for git repo https://github.com/leo60228/mpdiscord written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/leo60228/mpdiscord already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.69.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded discord-sdk v0.1.4
[INFO] [stderr]   Downloaded app_dirs2 v2.3.2
[INFO] [stderr]   Downloaded mparsed v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 99ae9d3201e70566976835fc332e4b6eb34b8d48fee6c353c037fc866317676d
[INFO] running `Command { std: "docker" "start" "-a" "99ae9d3201e70566976835fc332e4b6eb34b8d48fee6c353c037fc866317676d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "99ae9d3201e70566976835fc332e4b6eb34b8d48fee6c353c037fc866317676d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "99ae9d3201e70566976835fc332e4b6eb34b8d48fee6c353c037fc866317676d", kill_on_drop: false }`
[INFO] [stdout] 99ae9d3201e70566976835fc332e4b6eb34b8d48fee6c353c037fc866317676d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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" "RUSTFLAGS=--cap-lints=warn" "-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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 69605428cdadad7f4c5492f7d74af622ed9fb5844a16e8d98bab1237f2773a9a
[INFO] running `Command { std: "docker" "start" "-a" "69605428cdadad7f4c5492f7d74af622ed9fb5844a16e8d98bab1237f2773a9a", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling libc v0.2.107
[INFO] [stderr]    Compiling proc-macro2 v1.0.32
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.81
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling serde_derive v1.0.130
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking pin-project-lite v0.2.7
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]     Checking bytes v1.1.0
[INFO] [stderr]    Compiling cc v1.0.72
[INFO] [stderr]    Compiling pkg-config v0.3.22
[INFO] [stderr]     Checking smallvec v1.7.0
[INFO] [stderr]     Checking once_cell v1.8.0
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]     Checking instant v0.1.12
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking itoa v0.4.8
[INFO] [stderr]    Compiling futures-core v0.3.17
[INFO] [stderr]     Checking lock_api v0.4.5
[INFO] [stderr]    Compiling futures-task v0.3.17
[INFO] [stderr]     Checking tracing-core v0.1.21
[INFO] [stderr]    Compiling tokio v1.13.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]    Compiling futures-util v0.3.17
[INFO] [stderr]     Checking matches v0.1.9
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking foreign-types-shared v0.1.1
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking tinyvec_macros v0.1.0
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling openssl v0.10.38
[INFO] [stderr]     Checking http v0.2.5
[INFO] [stderr]     Checking tinyvec v1.5.1
[INFO] [stderr]     Checking foreign-types v0.3.2
[INFO] [stderr]    Compiling futures-channel v0.3.17
[INFO] [stderr]     Checking futures-sink v0.3.17
[INFO] [stderr]     Checking percent-encoding v2.1.0
[INFO] [stderr]    Compiling httparse v1.5.1
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]    Compiling native-tls v0.2.8
[INFO] [stderr]     Checking form_urlencoded v1.0.1
[INFO] [stderr]     Checking try-lock v0.2.3
[INFO] [stderr]    Compiling serde_json v1.0.70
[INFO] [stderr]     Checking unicode-bidi v0.3.7
[INFO] [stderr]     Checking slab v0.4.5
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking mio v0.7.14
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking dirs-sys v0.3.6
[INFO] [stderr]     Checking openssl-probe v0.1.4
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]     Checking unicode-normalization v0.1.19
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]     Checking dirs v3.0.2
[INFO] [stderr]    Compiling openssl-sys v0.9.70
[INFO] [stderr]     Checking socket2 v0.4.2
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]     Checking httpdate v1.0.1
[INFO] [stderr]     Checking tower-service v0.3.1
[INFO] [stderr]    Compiling anyhow v1.0.45
[INFO] [stderr]    Compiling async-trait v0.1.51
[INFO] [stderr]    Compiling encoding_rs v0.8.29
[INFO] [stderr]     Checking xdg v2.4.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking base64 v0.13.0
[INFO] [stderr]     Checking mime v0.3.16
[INFO] [stderr]     Checking ipnet v2.3.1
[INFO] [stderr]     Checking colored v1.9.3
[INFO] [stderr]     Checking app_dirs2 v2.3.2
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]     Checking crossbeam-channel v0.5.1
[INFO] [stderr]     Checking idna v0.2.3
[INFO] [stderr]     Checking http-body v0.4.4
[INFO] [stderr]     Checking url v2.2.2
[INFO] [stderr]    Compiling tokio-macros v1.5.1
[INFO] [stderr]    Compiling tracing-attributes v0.1.18
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]    Compiling serde_repr v0.1.7
[INFO] [stderr]     Checking tracing v0.1.29
[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 v0.3.7
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking serde_urlencoded v0.7.0
[INFO] [stderr]     Checking envy v0.4.2
[INFO] [stderr]     Checking toml v0.5.8
[INFO] [stderr]     Checking simple_logger v1.13.0
[INFO] [stderr]     Checking mparsed v0.2.0
[INFO] [stderr]     Checking discord-sdk v0.1.4
[INFO] [stderr]     Checking hyper v0.14.14
[INFO] [stderr]     Checking hyper-tls v0.5.0
[INFO] [stderr]     Checking reqwest v0.11.6
[INFO] [stderr]  Documenting mpdiscord v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(never_type)]
[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 `mpdiscord`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name mpdiscord src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=3718d3099cd79e2a -L dependency=/opt/rustwide/target/debug/deps --extern anyhow=/opt/rustwide/target/debug/deps/libanyhow-5e5f0e3dcb56f0d8.rmeta --extern async_trait=/opt/rustwide/target/debug/deps/libasync_trait-763e765b484015b7.so --extern discord_sdk=/opt/rustwide/target/debug/deps/libdiscord_sdk-8bfc8990d42fb659.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-cfdf503dbcd0d4be.rmeta --extern mparsed=/opt/rustwide/target/debug/deps/libmparsed-feecf7e39a1daeb0.rmeta --extern reqwest=/opt/rustwide/target/debug/deps/libreqwest-b3718748374fe46c.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-e3c0f8d2b803e408.rmeta --extern simple_logger=/opt/rustwide/target/debug/deps/libsimple_logger-670cced5e1de0b9b.rmeta --extern tokio=/opt/rustwide/target/debug/deps/libtokio-7cd065e85701524d.rmeta --extern toml=/opt/rustwide/target/debug/deps/libtoml-3e3e955238a9fea2.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "69605428cdadad7f4c5492f7d74af622ed9fb5844a16e8d98bab1237f2773a9a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "69605428cdadad7f4c5492f7d74af622ed9fb5844a16e8d98bab1237f2773a9a", kill_on_drop: false }`
[INFO] [stdout] 69605428cdadad7f4c5492f7d74af622ed9fb5844a16e8d98bab1237f2773a9a
