[INFO] fetching crate streamlink 0.3.1...
[INFO] documenting streamlink-0.3.1 against beta-2020-10-09 for beta-1.48-rustdoc-1
[INFO] extracting crate streamlink 0.3.1 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate streamlink 0.3.1 on toolchain beta-2020-10-09
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate streamlink 0.3.1
[INFO] finished tweaking crates.io crate streamlink 0.3.1
[INFO] tweaked toml for crates.io crate streamlink 0.3.1 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "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-2020-10-09" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded console v0.6.2
[INFO] [stderr]   Downloaded clicolors-control v0.2.0
[INFO] [stderr]   Downloaded indicatif v0.9.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 88a7052a083bdea7f39327dacd38020d037bfb197eeae118e7a25e00bbafb399
[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" "88a7052a083bdea7f39327dacd38020d037bfb197eeae118e7a25e00bbafb399", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "88a7052a083bdea7f39327dacd38020d037bfb197eeae118e7a25e00bbafb399", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "88a7052a083bdea7f39327dacd38020d037bfb197eeae118e7a25e00bbafb399", kill_on_drop: false }`
[INFO] [stdout] 88a7052a083bdea7f39327dacd38020d037bfb197eeae118e7a25e00bbafb399
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0856843094d9ec7330aa8919e0c8789aa6a4a5f1e96bee6d25a83ea7e4b23283
[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" "0856843094d9ec7330aa8919e0c8789aa6a4a5f1e96bee6d25a83ea7e4b23283", kill_on_drop: false }`
[INFO] [stderr]     Checking terminal_size v0.1.13
[INFO] [stderr]     Checking aho-corasick v0.6.10
[INFO] [stderr]     Checking clicolors-control v0.2.0
[INFO] [stderr]     Checking termios v0.3.3
[INFO] [stderr]     Checking toml v0.4.10
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking console v0.13.0
[INFO] [stderr]     Checking console v0.6.2
[INFO] [stderr]     Checking regex v0.2.11
[INFO] [stderr]     Checking indicatif v0.9.0
[INFO] [stderr]  Documenting streamlink v0.3.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(conservative_impl_trait)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 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 `streamlink`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type lib --crate-name streamlink 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 clap=/opt/rustwide/target/debug/deps/libclap-a2c6ee58dc56692c.rmeta --extern console=/opt/rustwide/target/debug/deps/libconsole-922f22e559d69f57.rmeta --extern error_chain=/opt/rustwide/target/debug/deps/liberror_chain-b5e026876842cf26.rmeta --extern indicatif=/opt/rustwide/target/debug/deps/libindicatif-cffe6266de7b8854.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-206cfb4b5fe90396.rmeta --extern serde_derive=/opt/rustwide/target/debug/deps/libserde_derive-e3451a74a47779dd.so --extern toml=/opt/rustwide/target/debug/deps/libtoml-0d8137c182fc2426.rmeta --extern url=/opt/rustwide/target/debug/deps/liburl-97775df2be7e619e.rmeta --cap-lints=warn --crate-version 0.3.1` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "0856843094d9ec7330aa8919e0c8789aa6a4a5f1e96bee6d25a83ea7e4b23283", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0856843094d9ec7330aa8919e0c8789aa6a4a5f1e96bee6d25a83ea7e4b23283", kill_on_drop: false }`
[INFO] [stdout] 0856843094d9ec7330aa8919e0c8789aa6a4a5f1e96bee6d25a83ea7e4b23283
