[INFO] fetching crate hprose 0.1.0...
[INFO] documenting hprose-0.1.0 against beta-2021-08-01 for beta-1.55-rustdoc-1
[INFO] extracting crate hprose 0.1.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate hprose 0.1.0 on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate hprose 0.1.0
[INFO] finished tweaking crates.io crate hprose 0.1.0
[INFO] tweaked toml for crates.io crate hprose 0.1.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded custom_derive v0.1.7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fa87fe7d419d387e0f361ae0b82563a364d2ae3b19ec554918604c285aae0808
[INFO] running `Command { std: "docker" "start" "-a" "fa87fe7d419d387e0f361ae0b82563a364d2ae3b19ec554918604c285aae0808", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fa87fe7d419d387e0f361ae0b82563a364d2ae3b19ec554918604c285aae0808", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fa87fe7d419d387e0f361ae0b82563a364d2ae3b19ec554918604c285aae0808", kill_on_drop: false }`
[INFO] [stdout] fa87fe7d419d387e0f361ae0b82563a364d2ae3b19ec554918604c285aae0808
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+beta-2021-08-01" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c714680a2122e6fddb64b0386fa295c8bd83de7de3eb99727e3c37ec2fa1da4e
[INFO] running `Command { std: "docker" "start" "-a" "c714680a2122e6fddb64b0386fa295c8bd83de7de3eb99727e3c37ec2fa1da4e", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]     Checking typeable v0.1.2
[INFO] [stderr]     Checking traitobject v0.0.1
[INFO] [stderr]     Checking uuid v0.3.1
[INFO] [stderr]     Checking custom_derive v0.1.7
[INFO] [stderr]     Checking dtoa v0.2.2
[INFO] [stderr]     Checking hpack v0.2.0
[INFO] [stderr]     Checking cookie v0.2.5
[INFO] [stderr]     Checking solicit v0.4.4
[INFO] [stderr]    Compiling unicase v1.4.2
[INFO] [stderr]     Checking hyper v0.9.18
[INFO] [stderr]  Documenting hprose v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/lib.rs:20:1
[INFO] [stdout]    |
[INFO] [stdout] 20 | #![feature(specialization)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/lib.rs:21:1
[INFO] [stdout]    |
[INFO] [stdout] 21 | #![feature(test)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 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 `hprose`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type lib --crate-name hprose src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern custom_derive=/opt/rustwide/target/debug/deps/libcustom_derive-55ca70b5369f179e.rmeta --extern dtoa=/opt/rustwide/target/debug/deps/libdtoa-0a397418e247864c.rmeta --extern hyper=/opt/rustwide/target/debug/deps/libhyper-4963d78032cc11e1.rmeta --extern num=/opt/rustwide/target/debug/deps/libnum-79759a32a21f586c.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-464fb26da05c9bc9.rmeta --extern time=/opt/rustwide/target/debug/deps/libtime-62acba5778e5a809.rmeta --extern uuid=/opt/rustwide/target/debug/deps/libuuid-55a7a1e33492ad9b.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "c714680a2122e6fddb64b0386fa295c8bd83de7de3eb99727e3c37ec2fa1da4e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c714680a2122e6fddb64b0386fa295c8bd83de7de3eb99727e3c37ec2fa1da4e", kill_on_drop: false }`
[INFO] [stdout] c714680a2122e6fddb64b0386fa295c8bd83de7de3eb99727e3c37ec2fa1da4e
