[INFO] cloning repository https://github.com/viandoxdev/mngdx
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/viandoxdev/mngdx" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fviandoxdev%2Fmngdx", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fviandoxdev%2Fmngdx'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6a4d719c129e77fd3ade9e2dbfe79fd59198dd7c
[INFO] documenting viandoxdev/mngdx 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%2Fviandoxdev%2Fmngdx" "/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/viandoxdev/mngdx 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/viandoxdev/mngdx
[INFO] finished tweaking git repo https://github.com/viandoxdev/mngdx
[INFO] tweaked toml for git repo https://github.com/viandoxdev/mngdx written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/viandoxdev/mngdx 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] 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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 04ea1497b639cd3d004e6ed3dc074d50ef861eda706649beec8c7c24ee5cc7be
[INFO] running `Command { std: "docker" "start" "-a" "04ea1497b639cd3d004e6ed3dc074d50ef861eda706649beec8c7c24ee5cc7be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "04ea1497b639cd3d004e6ed3dc074d50ef861eda706649beec8c7c24ee5cc7be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "04ea1497b639cd3d004e6ed3dc074d50ef861eda706649beec8c7c24ee5cc7be", kill_on_drop: false }`
[INFO] [stdout] 04ea1497b639cd3d004e6ed3dc074d50ef861eda706649beec8c7c24ee5cc7be
[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: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] 26d1e5fce39f55082d12cb8167fbbca7787886da228480dd504e7835e8c91aa6
[INFO] running `Command { std: "docker" "start" "-a" "26d1e5fce39f55082d12cb8167fbbca7787886da228480dd504e7835e8c91aa6", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling libc v0.2.118
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking smallvec v1.8.0
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]    Compiling futures-core v0.3.21
[INFO] [stderr]     Checking pin-project-lite v0.2.8
[INFO] [stderr]    Compiling pkg-config v0.3.24
[INFO] [stderr]     Checking bytes v1.1.0
[INFO] [stderr]     Checking once_cell v1.9.0
[INFO] [stderr]    Compiling cc v1.0.72
[INFO] [stderr]    Compiling crossbeam-utils v0.8.7
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking futures-sink v0.3.21
[INFO] [stderr]     Checking itoa v1.0.1
[INFO] [stderr]    Compiling futures-task v0.3.21
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.7
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]    Compiling crc32fast v1.3.2
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]    Compiling openssl v0.10.38
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling futures-util v0.3.21
[INFO] [stderr]     Checking foreign-types-shared v0.1.1
[INFO] [stderr]    Compiling futures-channel v0.3.21
[INFO] [stderr]    Compiling native-tls v0.2.8
[INFO] [stderr]    Compiling signal-hook v0.3.13
[INFO] [stderr]     Checking slab v0.4.5
[INFO] [stderr]     Checking tinyvec_macros v0.1.0
[INFO] [stderr]     Checking matches v0.1.9
[INFO] [stderr]     Checking futures-io v0.3.21
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]     Checking adler32 v1.2.0
[INFO] [stderr]    Compiling httparse v1.6.0
[INFO] [stderr]     Checking percent-encoding v2.1.0
[INFO] [stderr]     Checking try-lock v0.2.3
[INFO] [stderr]     Checking openssl-probe v0.1.5
[INFO] [stderr]     Checking httpdate v1.0.2
[INFO] [stderr]    Compiling serde_json v1.0.79
[INFO] [stderr]    Compiling encoding_rs v0.8.30
[INFO] [stderr]    Compiling parking_lot_core v0.9.1
[INFO] [stderr]     Checking weezl v0.1.5
[INFO] [stderr]     Checking tower-service v0.3.1
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking unicode-bidi v0.3.7
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking ryu v1.0.9
[INFO] [stderr]    Compiling anyhow v1.0.56
[INFO] [stderr]     Checking jpeg-decoder v0.1.22
[INFO] [stderr]     Checking color_quant v1.1.0
[INFO] [stderr]     Checking bit_field v0.10.1
[INFO] [stderr]     Checking lebe v0.5.1
[INFO] [stderr]     Checking half v1.8.2
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]     Checking ppv-lite86 v0.2.16
[INFO] [stderr]     Checking scoped_threadpool v0.1.9
[INFO] [stderr]     Checking unicode-segmentation v1.9.0
[INFO] [stderr]     Checking bytemuck v1.7.3
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]     Checking unicode-width v0.1.9
[INFO] [stderr]     Checking fastrand v1.7.0
[INFO] [stderr]     Checking cassowary v0.3.0
[INFO] [stderr]     Checking mime v0.3.16
[INFO] [stderr]     Checking base64 v0.13.0
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking ipnet v2.3.1
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling indexmap v1.8.0
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling num-rational v0.4.0
[INFO] [stderr]    Compiling quote v1.0.15
[INFO] [stderr]     Checking instant v0.1.12
[INFO] [stderr]     Checking deflate v1.0.0
[INFO] [stderr]     Checking inflate v0.4.5
[INFO] [stderr]     Checking lock_api v0.4.6
[INFO] [stderr]     Checking foreign-types v0.3.2
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]     Checking miniz_oxide v0.5.1
[INFO] [stderr]     Checking tracing-core v0.1.22
[INFO] [stderr]     Checking http v0.2.6
[INFO] [stderr]     Checking tinyvec v1.5.1
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]     Checking form_urlencoded v1.0.1
[INFO] [stderr]    Compiling openssl-sys v0.9.72
[INFO] [stderr]     Checking gif v0.11.3
[INFO] [stderr]     Checking spin v0.9.2
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking tracing v0.1.30
[INFO] [stderr]     Checking http-body v0.4.4
[INFO] [stderr]     Checking crossbeam-channel v0.5.2
[INFO] [stderr]     Checking unicode-normalization v0.1.19
[INFO] [stderr]     Checking png v0.17.3
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking mio v0.7.14
[INFO] [stderr]     Checking getrandom v0.2.4
[INFO] [stderr]     Checking socket2 v0.4.4
[INFO] [stderr]     Checking flate2 v1.0.22
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking tempfile v3.3.0
[INFO] [stderr]     Checking crossbeam-deque v0.8.1
[INFO] [stderr]     Checking idna v0.2.3
[INFO] [stderr]     Checking threadpool v1.8.1
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]     Checking parking_lot v0.12.0
[INFO] [stderr]     Checking nanorand v0.6.1
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking tiff v0.7.1
[INFO] [stderr]     Checking signal-hook-mio v0.2.1
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking url v2.2.2
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking crossterm v0.22.1
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking pretty_env_logger v0.4.0
[INFO] [stderr]     Checking tui v0.17.0
[INFO] [stderr]     Checking jpeg-decoder v0.2.2
[INFO] [stderr]    Compiling tokio-macros v1.7.0
[INFO] [stderr]    Compiling pin-project-internal v1.0.10
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]     Checking tokio v1.16.1
[INFO] [stderr]     Checking pin-project v1.0.10
[INFO] [stderr]     Checking flume v0.10.11
[INFO] [stderr]     Checking exr v1.4.1
[INFO] [stderr]     Checking thiserror v1.0.30
[INFO] [stderr]     Checking enquote v1.1.0
[INFO] [stderr]     Checking tokio-util v0.6.9
[INFO] [stderr]     Checking tokio-native-tls v0.3.0
[INFO] [stderr]     Checking tokio-stream v0.1.8
[INFO] [stderr]     Checking h2 v0.3.11
[INFO] [stderr]     Checking image v0.24.0
[INFO] [stderr]     Checking hyper v0.14.17
[INFO] [stderr]     Checking serde_urlencoded v0.7.1
[INFO] [stderr]     Checking uuid v0.8.2
[INFO] [stderr]     Checking hyper-tls v0.5.0
[INFO] [stderr]     Checking reqwest v0.11.9
[INFO] [stderr]  Documenting tk v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(once_cell)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(min_specialization)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not document `tk`
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type bin --crate-name tk src/main.rs -o /opt/rustwide/target/doc --cfg 'feature="default"' --cfg 'feature="set_padding"' --cfg 'feature="tempfile"' --cfg 'feature="timers"' --cfg 'feature="use_tempfiles"' --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items '-Arustdoc::private-intra-doc-links' -C metadata=9914234677e6b260 -L dependency=/opt/rustwide/target/debug/deps --extern anyhow=/opt/rustwide/target/debug/deps/libanyhow-f36e2d17ea490826.rmeta --extern base64=/opt/rustwide/target/debug/deps/libbase64-9fa7776f6af9122c.rmeta --extern chrono=/opt/rustwide/target/debug/deps/libchrono-52f338f84e2aa050.rmeta --extern crossterm=/opt/rustwide/target/debug/deps/libcrossterm-ced6d1aa31a1fffb.rmeta --extern enquote=/opt/rustwide/target/debug/deps/libenquote-ed2773cf709181ff.rmeta --extern image=/opt/rustwide/target/debug/deps/libimage-0d39adc8dc661be5.rmeta --extern libc=/opt/rustwide/target/debug/deps/liblibc-2b19fac3c736bc73.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-61e05190efdcfdd4.rmeta --extern parking_lot=/opt/rustwide/target/debug/deps/libparking_lot-752d843723619939.rmeta --extern pretty_env_logger=/opt/rustwide/target/debug/deps/libpretty_env_logger-165442b33698436a.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-4e73431a423045a4.rmeta --extern reqwest=/opt/rustwide/target/debug/deps/libreqwest-bc8ccabbac13a334.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-89c09287559151e6.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-f9a8b14427e0fc97.rmeta --extern tempfile=/opt/rustwide/target/debug/deps/libtempfile-179f403e2581336b.rmeta --extern tokio=/opt/rustwide/target/debug/deps/libtokio-5ca7850db1ac7bef.rmeta --extern tokio_stream=/opt/rustwide/target/debug/deps/libtokio_stream-6f0634695a4c4685.rmeta --extern tui=/opt/rustwide/target/debug/deps/libtui-c6789d9d49c2ea7c.rmeta --extern uuid=/opt/rustwide/target/debug/deps/libuuid-9ae2b0fb30969fe8.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "26d1e5fce39f55082d12cb8167fbbca7787886da228480dd504e7835e8c91aa6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "26d1e5fce39f55082d12cb8167fbbca7787886da228480dd504e7835e8c91aa6", kill_on_drop: false }`
[INFO] [stdout] 26d1e5fce39f55082d12cb8167fbbca7787886da228480dd504e7835e8c91aa6