[INFO] fetching crate maud-pulldown-cmark 0.5.0...
[INFO] documenting maud-pulldown-cmark-0.5.0 against beta-2021-08-01 for beta-1.55-rustdoc-1
[INFO] extracting crate maud-pulldown-cmark 0.5.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate maud-pulldown-cmark 0.5.0 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 maud-pulldown-cmark 0.5.0
[INFO] finished tweaking crates.io crate maud-pulldown-cmark 0.5.0
[INFO] tweaked toml for crates.io crate maud-pulldown-cmark 0.5.0 written to /workspace/builds/worker-8/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] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pulldown-cmark v0.0.8
[INFO] [stderr]   Downloaded maud_macros v0.14.0
[INFO] [stderr]   Downloaded maud v0.14.0
[INFO] [stderr]   Downloaded pulldown-cmark v0.0.3
[INFO] [stderr]   Downloaded skeptic v0.6.1
[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" "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] 26bd68b4098bb271746eec1161317055a9e0a0ccd99c030b75186a1d33c9f26d
[INFO] running `Command { std: "docker" "start" "-a" "26bd68b4098bb271746eec1161317055a9e0a0ccd99c030b75186a1d33c9f26d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "26bd68b4098bb271746eec1161317055a9e0a0ccd99c030b75186a1d33c9f26d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "26bd68b4098bb271746eec1161317055a9e0a0ccd99c030b75186a1d33c9f26d", kill_on_drop: false }`
[INFO] [stdout] 26bd68b4098bb271746eec1161317055a9e0a0ccd99c030b75186a1d33c9f26d
[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" "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] 3898a14ad9a33ee4d1500fe828879a98efbd8699a9afd8ab00b6ce0602d163ea
[INFO] running `Command { std: "docker" "start" "-a" "3898a14ad9a33ee4d1500fe828879a98efbd8699a9afd8ab00b6ce0602d163ea", kill_on_drop: false }`
[INFO] [stderr]    Compiling remove_dir_all v0.5.3
[INFO] [stderr]     Checking bitflags v0.5.0
[INFO] [stderr]     Checking maud v0.14.0
[INFO] [stderr]    Compiling getopts v0.2.21
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]     Checking pulldown-cmark v0.0.8
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/maud-0.14.0/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(specialization)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `maud` due to 2 previous errors
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "3898a14ad9a33ee4d1500fe828879a98efbd8699a9afd8ab00b6ce0602d163ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3898a14ad9a33ee4d1500fe828879a98efbd8699a9afd8ab00b6ce0602d163ea", kill_on_drop: false }`
[INFO] [stdout] 3898a14ad9a33ee4d1500fe828879a98efbd8699a9afd8ab00b6ce0602d163ea
