[INFO] fetching crate sidetree 0.3.0...
[INFO] documenting sidetree-0.3.0 against beta-2021-08-01 for beta-1.55-rustdoc-1
[INFO] extracting crate sidetree 0.3.0 into /workspace/builds/worker-70/source
[INFO] validating manifest of crates.io crate sidetree 0.3.0 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 sidetree 0.3.0
[INFO] finished tweaking crates.io crate sidetree 0.3.0
[INFO] tweaked toml for crates.io crate sidetree 0.3.0 written to /workspace/builds/worker-70/source/Cargo.toml
[INFO] crate crates.io crate sidetree 0.3.0 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded redox_termios v0.1.2
[INFO] [stderr]   Downloaded termion v1.5.6
[INFO] [stderr]   Downloaded combine v4.5.2
[INFO] [stderr]   Downloaded tui v0.14.0
[INFO] [stderr]   Downloaded cassowary v0.3.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-70/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-70/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] 4b526d9971cebb2200c0385811c5abcc1dbea247bb3d0288f0d15cd3ea52766c
[INFO] running `Command { std: "docker" "start" "-a" "4b526d9971cebb2200c0385811c5abcc1dbea247bb3d0288f0d15cd3ea52766c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4b526d9971cebb2200c0385811c5abcc1dbea247bb3d0288f0d15cd3ea52766c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4b526d9971cebb2200c0385811c5abcc1dbea247bb3d0288f0d15cd3ea52766c", kill_on_drop: false }`
[INFO] [stdout] 4b526d9971cebb2200c0385811c5abcc1dbea247bb3d0288f0d15cd3ea52766c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-70/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-70/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] d9c54af3d1e959118d2c7f545de6ac78d51524f169a942fde14deeadf8ba3ced
[INFO] running `Command { std: "docker" "start" "-a" "d9c54af3d1e959118d2c7f545de6ac78d51524f169a942fde14deeadf8ba3ced", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]    Compiling syn v1.0.70
[INFO] [stderr]    Compiling libc v0.2.93
[INFO] [stderr]    Compiling serde_derive v1.0.125
[INFO] [stderr]    Compiling serde v1.0.125
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling unicode-segmentation v1.7.1
[INFO] [stderr]     Checking numtoa v0.1.0
[INFO] [stderr]     Checking hashbrown v0.9.1
[INFO] [stderr]     Checking once_cell v1.7.2
[INFO] [stderr]     Checking strsim v0.10.0
[INFO] [stderr]     Checking os_str_bytes v2.4.0
[INFO] [stderr]     Checking cassowary v0.3.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling indexmap v1.6.2
[INFO] [stderr]     Checking textwrap v0.12.1
[INFO] [stderr]     Checking path-dedot v3.0.12
[INFO] [stderr]    Compiling heck v0.3.2
[INFO] [stderr]     Checking path-absolutize v3.0.10
[INFO] [stderr]     Checking combine v4.5.2
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking termion v1.5.6
[INFO] [stderr]     Checking tui v0.14.0
[INFO] [stderr]    Compiling clap_derive v3.0.0-beta.2
[INFO] [stderr]     Checking clap v3.0.0-beta.2
[INFO] [stderr]     Checking toml v0.5.8
[INFO] [stderr]  Documenting sidetree v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: could not document `sidetree`
[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(try_trait)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(generators, generator_trait)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] Caused by:
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[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 0.3.0` (exit status: 1)
[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] running `Command { std: "docker" "inspect" "d9c54af3d1e959118d2c7f545de6ac78d51524f169a942fde14deeadf8ba3ced", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d9c54af3d1e959118d2c7f545de6ac78d51524f169a942fde14deeadf8ba3ced", kill_on_drop: false }`
[INFO] [stdout] d9c54af3d1e959118d2c7f545de6ac78d51524f169a942fde14deeadf8ba3ced
