[INFO] fetching crate serde_osc 0.4.2...
[INFO] documenting serde_osc-0.4.2 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate serde_osc 0.4.2 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate serde_osc 0.4.2 on toolchain beta-2022-05-20
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate serde_osc 0.4.2
[INFO] finished tweaking crates.io crate serde_osc 0.4.2
[INFO] tweaked toml for crates.io crate serde_osc 0.4.2 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+beta-2022-05-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d906119403db125b3ae2e987a57c5dd2959b7712a0b0011c71c1f587ee266410
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "d906119403db125b3ae2e987a57c5dd2959b7712a0b0011c71c1f587ee266410", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d906119403db125b3ae2e987a57c5dd2959b7712a0b0011c71c1f587ee266410", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d906119403db125b3ae2e987a57c5dd2959b7712a0b0011c71c1f587ee266410", kill_on_drop: false }`
[INFO] [stdout] d906119403db125b3ae2e987a57c5dd2959b7712a0b0011c71c1f587ee266410
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+beta-2022-05-20" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 9cc57af0933bcbbbf1f975f8139cd7c0df360ac3f741afe19fbd14c796e1cc70
[INFO] running `Command { std: "docker" "start" "-a" "9cc57af0933bcbbbf1f975f8139cd7c0df360ac3f741afe19fbd14c796e1cc70", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.137
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]  Documenting serde_osc v0.4.2 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/lib.rs:88:12
[INFO] [stdout]    |
[INFO] [stdout] 88 | #![feature(try_from)]
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unknown attribute `norun`. Did you mean `no_run`?
[INFO] [stdout]   --> src/lib.rs:1:1
[INFO] [stdout]    |
[INFO] [stdout] 1  | / //! # OSC protocol
[INFO] [stdout] 2  | | //!
[INFO] [stdout] 3  | | //! Open Sound Control (OSC) is an open, transport-independent, message-based
[INFO] [stdout] 4  | | //! protocol developed for communication among computers, sound synthesizers,
[INFO] [stdout] ...  |
[INFO] [stdout] 84 | | //! }
[INFO] [stdout] 85 | | //! ```
[INFO] [stdout]    | |_______^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(rustdoc::invalid_codeblock_attributes)]` on by default
[INFO] [stdout]    = help: the code block will either not be tested if not marked as a rust one or will be run (which you might not want)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `serde_osc`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type lib --crate-name serde_osc src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=0dc5cb37e745a4b7 -L dependency=/opt/rustwide/target/debug/deps --extern byteorder=/opt/rustwide/target/debug/deps/libbyteorder-21d0a7105b7fc30b.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-dbdb529db862b224.rmeta --cap-lints=warn --crate-version 0.4.2` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "9cc57af0933bcbbbf1f975f8139cd7c0df360ac3f741afe19fbd14c796e1cc70", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9cc57af0933bcbbbf1f975f8139cd7c0df360ac3f741afe19fbd14c796e1cc70", kill_on_drop: false }`
[INFO] [stdout] 9cc57af0933bcbbbf1f975f8139cd7c0df360ac3f741afe19fbd14c796e1cc70