[INFO] cloning repository https://github.com/dingxiangfei2009/evtez-demo
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dingxiangfei2009/evtez-demo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdingxiangfei2009%2Fevtez-demo", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdingxiangfei2009%2Fevtez-demo'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5df947ae403ac8ff497bfbde57a8fd2d56a29945
[INFO] documenting dingxiangfei2009/evtez-demo against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdingxiangfei2009%2Fevtez-demo" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dingxiangfei2009/evtez-demo on toolchain beta-2022-05-20
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/dingxiangfei2009/evtez-demo
[INFO] finished tweaking git repo https://github.com/dingxiangfei2009/evtez-demo
[INFO] tweaked toml for git repo https://github.com/dingxiangfei2009/evtez-demo written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/dingxiangfei2009/evtez-demo already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: profiles for the non root package will be ignored, specify profiles at the workspace root:
[INFO] [stderr] package:   /workspace/builds/worker-13/source/visualizer/Cargo.toml
[INFO] [stderr] workspace: /workspace/builds/worker-13/source/Cargo.toml
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "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] 3106e1e1b093e5b9a937fff523d7f6140a38268d3c5bbbb85ece416cec293c7a
[INFO] running `Command { std: "docker" "start" "-a" "3106e1e1b093e5b9a937fff523d7f6140a38268d3c5bbbb85ece416cec293c7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3106e1e1b093e5b9a937fff523d7f6140a38268d3c5bbbb85ece416cec293c7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3106e1e1b093e5b9a937fff523d7f6140a38268d3c5bbbb85ece416cec293c7a", kill_on_drop: false }`
[INFO] [stdout] 3106e1e1b093e5b9a937fff523d7f6140a38268d3c5bbbb85ece416cec293c7a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4da34a0820096b85581573e55f7f9579d4e4ac3098ede8b8b9c4851f4ca31eeb
[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" "4da34a0820096b85581573e55f7f9579d4e4ac3098ede8b8b9c4851f4ca31eeb", kill_on_drop: false }`
[INFO] [stderr] warning: profiles for the non root package will be ignored, specify profiles at the workspace root:
[INFO] [stderr] package:   /opt/rustwide/workdir/visualizer/Cargo.toml
[INFO] [stderr] workspace: /opt/rustwide/workdir/Cargo.toml
[INFO] [stderr]    Compiling proc-macro2 v1.0.37
[INFO] [stderr]    Compiling syn v1.0.91
[INFO] [stderr]    Compiling libc v0.2.123
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]     Checking futures-sink v0.3.21
[INFO] [stderr]     Checking slab v0.4.6
[INFO] [stderr]    Compiling httparse v1.7.0
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]     Checking weezl v0.1.6
[INFO] [stderr]     Checking jpeg-decoder v0.1.22
[INFO] [stderr]     Checking bytemuck v1.9.1
[INFO] [stderr]     Checking try-lock v0.2.3
[INFO] [stderr]     Checking tower-service v0.3.1
[INFO] [stderr]     Checking float-ord v0.2.0
[INFO] [stderr]    Compiling wee_alloc v0.4.5
[INFO] [stderr]     Checking ttf-parser v0.12.3
[INFO] [stderr]     Checking memory_units v0.4.0
[INFO] [stderr]    Compiling generic-array v0.14.5
[INFO] [stderr]    Compiling cmake v0.1.48
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling indexmap v1.8.1
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling servo-fontconfig-sys v5.1.0
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking http v0.2.6
[INFO] [stderr]     Checking tracing-core v0.1.25
[INFO] [stderr]     Checking log v0.4.16
[INFO] [stderr]     Checking gif v0.11.3
[INFO] [stderr]     Checking futures-channel v0.3.21
[INFO] [stderr]     Checking png v0.16.8
[INFO] [stderr]    Compiling mime_guess v2.0.4
[INFO] [stderr]    Compiling freetype-sys v0.13.1
[INFO] [stderr]    Compiling expat-sys v2.1.6
[INFO] [stderr]    Compiling pathfinder_simd v0.5.1
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking buf_redux v0.8.4
[INFO] [stderr]     Checking twoway v0.1.8
[INFO] [stderr]     Checking os_str_bytes v6.0.0
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking block-buffer v0.9.0
[INFO] [stderr]     Checking block-buffer v0.10.2
[INFO] [stderr]     Checking crypto-common v0.1.3
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking mio v0.8.2
[INFO] [stderr]     Checking socket2 v0.4.4
[INFO] [stderr]     Checking getrandom v0.2.6
[INFO] [stderr]     Checking dirs-sys-next v0.1.2
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking tempfile v3.3.0
[INFO] [stderr]     Checking sha-1 v0.9.8
[INFO] [stderr]     Checking digest v0.10.3
[INFO] [stderr]     Checking dirs-next v2.0.0
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking regex v1.5.5
[INFO] [stderr]     Checking freetype v0.7.0
[INFO] [stderr]     Checking http-body v0.4.4
[INFO] [stderr]     Checking headers-core v0.2.0
[INFO] [stderr]     Checking sha-1 v0.10.0
[INFO] [stderr]     Checking pathfinder_geometry v0.5.1
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking servo-fontconfig v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking headers v0.3.7
[INFO] [stderr]     Checking font-kit v0.10.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking image v0.23.14
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking multipart v0.18.0
[INFO] [stderr]     Checking pretty_env_logger v0.4.0
[INFO] [stderr]     Checking plotters-bitmap v0.3.1
[INFO] [stderr]     Checking plotters v0.3.1
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.80
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.80
[INFO] [stderr]    Compiling futures-macro v0.3.21
[INFO] [stderr]    Compiling tokio-macros v1.7.0
[INFO] [stderr]    Compiling tracing-attributes v0.1.20
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]    Compiling pin-project-internal v1.0.10
[INFO] [stderr]    Compiling clap_derive v3.1.7
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.80
[INFO] [stderr]     Checking tokio v1.17.0
[INFO] [stderr]     Checking wasm-bindgen v0.2.80
[INFO] [stderr]     Checking pin-project v1.0.10
[INFO] [stderr]     Checking futures-util v0.3.21
[INFO] [stderr]     Checking tracing v0.1.33
[INFO] [stderr]     Checking thiserror v1.0.30
[INFO] [stderr]     Checking js-sys v0.3.57
[INFO] [stderr]     Checking tungstenite v0.14.0
[INFO] [stderr]     Checking clap v3.1.8
[INFO] [stderr]     Checking futures-executor v0.3.21
[INFO] [stderr]     Checking serde v1.0.136
[INFO] [stderr]     Checking futures v0.3.21
[INFO] [stderr]     Checking web-sys v0.3.57
[INFO] [stderr]     Checking wasm-bindgen-futures v0.4.30
[INFO] [stderr]     Checking tokio-util v0.7.1
[INFO] [stderr]     Checking tokio-util v0.6.9
[INFO] [stderr]     Checking tokio-tungstenite v0.15.0
[INFO] [stderr]     Checking tokio-stream v0.1.8
[INFO] [stderr]     Checking h2 v0.3.13
[INFO] [stderr]     Checking serde_json v1.0.79
[INFO] [stderr]     Checking serde_urlencoded v0.7.1
[INFO] [stderr]     Checking plotters-canvas v0.3.0
[INFO] [stderr]  Documenting visualizer v0.1.0 (/opt/rustwide/workdir/visualizer)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> visualizer/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(let_else)]
[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 `visualizer`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type cdylib --crate-type rlib --crate-name visualizer visualizer/src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=57be0b2aa90811c8 -L dependency=/opt/rustwide/target/debug/deps --extern anyhow=/opt/rustwide/target/debug/deps/libanyhow-f1182eb1ea07fabc.rmeta --extern chrono=/opt/rustwide/target/debug/deps/libchrono-57650b1d3a8b973d.rmeta --extern futures=/opt/rustwide/target/debug/deps/libfutures-607ebb8288b9a87d.rmeta --extern js_sys=/opt/rustwide/target/debug/deps/libjs_sys-c331b7742b12c967.rmeta --extern plotters=/opt/rustwide/target/debug/deps/libplotters-841c26c5ea9cf1ff.rmeta --extern plotters_canvas=/opt/rustwide/target/debug/deps/libplotters_canvas-64ab40e565efd9f7.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-3a3b0b93f6d6b3c0.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-c85a629125a8b9dd.rmeta --extern wasm_bindgen=/opt/rustwide/target/debug/deps/libwasm_bindgen-680f63cf1e3ecc4e.rmeta --extern wasm_bindgen_futures=/opt/rustwide/target/debug/deps/libwasm_bindgen_futures-c81e215aade46e7a.rmeta --extern web_sys=/opt/rustwide/target/debug/deps/libweb_sys-2318443140acf0d5.rmeta --extern wee_alloc=/opt/rustwide/target/debug/deps/libwee_alloc-b81e91686fd2a984.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "4da34a0820096b85581573e55f7f9579d4e4ac3098ede8b8b9c4851f4ca31eeb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4da34a0820096b85581573e55f7f9579d4e4ac3098ede8b8b9c4851f4ca31eeb", kill_on_drop: false }`
[INFO] [stdout] 4da34a0820096b85581573e55f7f9579d4e4ac3098ede8b8b9c4851f4ca31eeb