[INFO] fetching crate mprs 0.2.0...
[INFO] documenting mprs-0.2.0 against 1.75.0 for beta-1.76-rustdoc-1
[INFO] extracting crate mprs 0.2.0 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate mprs 0.2.0 on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mprs 0.2.0
[INFO] finished tweaking crates.io crate mprs 0.2.0
[INFO] tweaked toml for crates.io crate mprs 0.2.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate crates.io crate mprs 0.2.0 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" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded thiserror v1.0.36
[INFO] [stderr]   Downloaded prettytable-rs v0.9.0
[INFO] [stderr]   Downloaded syn v1.0.100
[INFO] [stderr]   Downloaded thiserror-impl v1.0.36
[INFO] [stderr]   Downloaded mpd v0.0.12
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 037abd9617b8fe149fc85d77b6df090361d88c1149faf97a4310892fbc7c9278
[INFO] running `Command { std: "docker" "start" "-a" "037abd9617b8fe149fc85d77b6df090361d88c1149faf97a4310892fbc7c9278", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "037abd9617b8fe149fc85d77b6df090361d88c1149faf97a4310892fbc7c9278", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "037abd9617b8fe149fc85d77b6df090361d88c1149faf97a4310892fbc7c9278", kill_on_drop: false }`
[INFO] [stdout] 037abd9617b8fe149fc85d77b6df090361d88c1149faf97a4310892fbc7c9278
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5d4ff09569581abb983a2705dbe33e55598fd2b002a75b24506030afa7b39c1c
[INFO] running `Command { std: "docker" "start" "-a" "5d4ff09569581abb983a2705dbe33e55598fd2b002a75b24506030afa7b39c1c", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling serde v1.0.139
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking regex-automata v0.1.10
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking itoa v0.4.8
[INFO] [stderr]     Checking ryu v1.0.10
[INFO] [stderr]     Checking unicode-width v0.1.9
[INFO] [stderr]     Checking bufstream v0.1.4
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]     Checking encode_unicode v1.0.0
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]     Checking dirs-sys-next v0.1.2
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking colored v2.0.0
[INFO] [stderr]     Checking dirs-next v2.0.0
[INFO] [stderr]     Checking term v0.7.0
[INFO] [stderr]     Checking mpd v0.0.12
[INFO] [stderr]     Checking bstr v0.2.17
[INFO] [stderr]     Checking csv v1.1.6
[INFO] [stderr]     Checking prettytable-rs v0.9.0
[INFO] [stderr]  Documenting mprs v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(drain_filter)]
[INFO] [stdout]   |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `drain_filter`
[INFO] [stdout]  --> src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(drain_filter)]
[INFO] [stdout]   |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unclosed HTML tag `Flag`
[INFO] [stdout]   --> src/args/argv.rs:26:22
[INFO] [stdout]    |
[INFO] [stdout] 26 | /// - __flags__ : Vec<Flag> -> vector of flags: Flag
[INFO] [stdout]    |                      ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(rustdoc::invalid_html_tags)]` on by default
[INFO] [stdout] help: try marking as source code
[INFO] [stdout]    |
[INFO] [stdout] 26 | /// - __flags__ : `Vec<Flag>` -> vector of flags: Flag
[INFO] [stdout]    |                   +         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unclosed HTML tag `flag`
[INFO] [stdout]   --> src/args/argv.rs:58:20
[INFO] [stdout]    |
[INFO] [stdout] 58 |     /// filters Vec<flag> by flag type return Vec<&flag::Flag>
[INFO] [stdout]    |                    ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: try marking as source code
[INFO] [stdout]    |
[INFO] [stdout] 58 |     /// filters `Vec<flag>` by flag type return Vec<&flag::Flag>
[INFO] [stdout]    |                 +         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unclosed HTML tag `TcpStream`
[INFO] [stdout]   --> src/mpd/client.rs:16:32
[INFO] [stdout]    |
[INFO] [stdout] 16 | /// - __client__: Option<Client<TcpStream>>,
[INFO] [stdout]    |                                ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: try marking as source code
[INFO] [stdout]    |
[INFO] [stdout] 16 | /// - __client__: `Option<Client<TcpStream>>`,
[INFO] [stdout]    |                   +                         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0635.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `mprs`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/1.75.0-x86_64-unknown-linux-gnu/bin/rustdoc --edition=2021 --crate-type lib --crate-name mprs src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=183684f3172a23f4 -L dependency=/opt/rustwide/target/debug/deps --extern colored=/opt/rustwide/target/debug/deps/libcolored-a9f5c38d8ef2ab23.rmeta --extern mpd=/opt/rustwide/target/debug/deps/libmpd-f7cf3d65040f7286.rmeta --extern prettytable=/opt/rustwide/target/debug/deps/libprettytable-395659f51192e7b0.rmeta --cap-lints=warn --crate-version 0.2.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "5d4ff09569581abb983a2705dbe33e55598fd2b002a75b24506030afa7b39c1c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5d4ff09569581abb983a2705dbe33e55598fd2b002a75b24506030afa7b39c1c", kill_on_drop: false }`
[INFO] [stdout] 5d4ff09569581abb983a2705dbe33e55598fd2b002a75b24506030afa7b39c1c
