[INFO] fetching crate streamlink 0.3.1...
[INFO] documenting streamlink-0.3.1 against 1.75.0 for beta-1.76-rustdoc-1
[INFO] extracting crate streamlink 0.3.1 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate streamlink 0.3.1 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 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-0-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[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]  Downloading crates ...
[INFO] [stderr]   Downloaded indicatif v0.9.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 8d87b99fa96af0bd45327bd7722bc916326e8c5b2c72b3356c36d89522af2972
[INFO] running `Command { std: "docker" "start" "-a" "8d87b99fa96af0bd45327bd7722bc916326e8c5b2c72b3356c36d89522af2972", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8d87b99fa96af0bd45327bd7722bc916326e8c5b2c72b3356c36d89522af2972", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d87b99fa96af0bd45327bd7722bc916326e8c5b2c72b3356c36d89522af2972", kill_on_drop: false }`
[INFO] [stdout] 8d87b99fa96af0bd45327bd7722bc916326e8c5b2c72b3356c36d89522af2972
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] c7b7ece8c5fad77b4f2adb9f6f6a23a9710b011c9a8711fdfc90eced90d28a9c
[INFO] running `Command { std: "docker" "start" "-a" "c7b7ece8c5fad77b4f2adb9f6f6a23a9710b011c9a8711fdfc90eced90d28a9c", kill_on_drop: false }`
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]    Compiling proc-macro2 v1.0.76
[INFO] [stderr]     Checking ucd-util v0.1.10
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking object v0.32.2
[INFO] [stderr]    Compiling serde v1.0.195
[INFO] [stderr]     Checking aho-corasick v0.6.10
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking unicode-bidi v0.3.14
[INFO] [stderr]     Checking matches v0.1.10
[INFO] [stderr]     Checking utf8-ranges v1.0.5
[INFO] [stderr]     Checking console v0.15.7
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking clicolors-control v0.2.0
[INFO] [stderr]     Checking termios v0.3.3
[INFO] [stderr]     Checking ansi_term v0.12.1
[INFO] [stderr]     Checking regex-syntax v0.5.6
[INFO] [stderr]     Checking console v0.6.2
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stderr]     Checking url v1.7.2
[INFO] [stderr]     Checking indicatif v0.9.0
[INFO] [stderr]     Checking toml v0.4.10
[INFO] [stderr]    Compiling serde_derive v1.0.195
[INFO] [stderr]     Checking backtrace v0.3.69
[INFO] [stderr]     Checking error-chain v0.11.0
[INFO] [stderr]  Documenting streamlink v0.3.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(conservative_impl_trait)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the attribute
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `conservative_impl_trait` has been stable since `1.26.0` and no longer requires an attribute to enable
[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 `streamlink`
[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 --crate-type lib --crate-name streamlink src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=01ddfdedffa2c150 -L dependency=/opt/rustwide/target/debug/deps --extern clap=/opt/rustwide/target/debug/deps/libclap-d056b544bb980d79.rmeta --extern console=/opt/rustwide/target/debug/deps/libconsole-425f84c788f455af.rmeta --extern error_chain=/opt/rustwide/target/debug/deps/liberror_chain-f4dfea316f0bc950.rmeta --extern indicatif=/opt/rustwide/target/debug/deps/libindicatif-a74bbc280ab846c0.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-d959715fe86d3f0d.rmeta --extern serde_derive=/opt/rustwide/target/debug/deps/libserde_derive-d2ced8b4540a43b2.so --extern toml=/opt/rustwide/target/debug/deps/libtoml-c9cfb73ac1b52ec4.rmeta --extern url=/opt/rustwide/target/debug/deps/liburl-cda3ee99a1e79260.rmeta --cap-lints=warn --crate-version 0.3.1` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "c7b7ece8c5fad77b4f2adb9f6f6a23a9710b011c9a8711fdfc90eced90d28a9c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c7b7ece8c5fad77b4f2adb9f6f6a23a9710b011c9a8711fdfc90eced90d28a9c", kill_on_drop: false }`
[INFO] [stdout] c7b7ece8c5fad77b4f2adb9f6f6a23a9710b011c9a8711fdfc90eced90d28a9c
