[INFO] cloning repository https://github.com/topisani/sidetree
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/topisani/sidetree" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftopisani%2Fsidetree", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftopisani%2Fsidetree'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fd5cef35c37ccae24cb5e1e7dd2ce5b9e3563b17
[INFO] documenting topisani/sidetree against beta-2021-08-01 for beta-1.55-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftopisani%2Fsidetree" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/topisani/sidetree 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] removed /workspace/builds/worker-0/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/topisani/sidetree
[INFO] finished tweaking git repo https://github.com/topisani/sidetree
[INFO] tweaked toml for git repo https://github.com/topisani/sidetree written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/topisani/sidetree already has a lockfile, it will not be regenerated
[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 path-dedot v3.0.12
[INFO] [stderr]   Downloaded path-absolutize v3.0.10
[INFO] [stderr]   Downloaded tui v0.14.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 044d128708b71a91f374d97ef2f49888202629d3a16a501dc3ad670e4e636a68
[INFO] running `Command { std: "docker" "start" "-a" "044d128708b71a91f374d97ef2f49888202629d3a16a501dc3ad670e4e636a68", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "044d128708b71a91f374d97ef2f49888202629d3a16a501dc3ad670e4e636a68", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "044d128708b71a91f374d97ef2f49888202629d3a16a501dc3ad670e4e636a68", kill_on_drop: false }`
[INFO] [stdout] 044d128708b71a91f374d97ef2f49888202629d3a16a501dc3ad670e4e636a68
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] ba90a813f3992193c0dc7114fcad4d092f474260af6028d09ce8cae1a996e9a2
[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" "ba90a813f3992193c0dc7114fcad4d092f474260af6028d09ce8cae1a996e9a2", kill_on_drop: false }`
[INFO] [stderr]     Checking path-dedot v3.0.12
[INFO] [stderr]     Checking combine v4.5.2
[INFO] [stderr]     Checking tui v0.14.0
[INFO] [stderr]    Compiling serde_derive v1.0.125
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking path-absolutize v3.0.10
[INFO] [stderr]    Compiling clap_derive v3.0.0-beta.2
[INFO] [stderr]     Checking clap v3.0.0-beta.2
[INFO] [stderr]     Checking serde v1.0.125
[INFO] [stderr]     Checking toml v0.5.8
[INFO] [stderr]  Documenting sidetree v0.4.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(generators, generator_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 `sidetree`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name sidetree src/main.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-729f9caefaa1c11d.rmeta --extern combine=/opt/rustwide/target/debug/deps/libcombine-2c85055fd08db315.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-5e37eee3e84fafab.rmeta --extern path_absolutize=/opt/rustwide/target/debug/deps/libpath_absolutize-6b2c4d565d281d3f.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-59a86ddd60e033b4.rmeta --extern termion=/opt/rustwide/target/debug/deps/libtermion-d9feebd55e76fbf3.rmeta --extern toml=/opt/rustwide/target/debug/deps/libtoml-ed71ea832672cef3.rmeta --extern tui=/opt/rustwide/target/debug/deps/libtui-0249dbd3ded20294.rmeta --extern unicode_width=/opt/rustwide/target/debug/deps/libunicode_width-e9779f261159561f.rmeta --extern xdg=/opt/rustwide/target/debug/deps/libxdg-2744532df002d2fc.rmeta --cap-lints=warn --crate-version 0.4.1` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "ba90a813f3992193c0dc7114fcad4d092f474260af6028d09ce8cae1a996e9a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ba90a813f3992193c0dc7114fcad4d092f474260af6028d09ce8cae1a996e9a2", kill_on_drop: false }`
[INFO] [stdout] ba90a813f3992193c0dc7114fcad4d092f474260af6028d09ce8cae1a996e9a2
