[INFO] cloning repository https://github.com/leo60228/mastocrom
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/leo60228/mastocrom" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fleo60228%2Fmastocrom", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fleo60228%2Fmastocrom'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9ae1825f26bd8868471ecf5c4a95bd8b44c6d000
[INFO] documenting leo60228/mastocrom against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fleo60228%2Fmastocrom" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/leo60228/mastocrom on toolchain beta-2020-08-29
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/leo60228/mastocrom
[INFO] finished tweaking git repo https://github.com/leo60228/mastocrom
[INFO] tweaked toml for git repo https://github.com/leo60228/mastocrom written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/leo60228/mastocrom already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--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 attohttpc v0.13.0
[INFO] [stderr]   Downloaded http-client v3.0.0
[INFO] [stderr]   Downloaded isahc v0.9.7
[INFO] [stderr]   Downloaded lazy_format v1.7.4
[INFO] [stderr]   Downloaded surf v2.0.0-alpha.4
[INFO] [stderr]   Downloaded crom v0.2.0
[INFO] [stderr]   Downloaded elefren v0.22.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 185d0769ef752c0e5ecc7fb251a0f8e15d83791f0e5a59dd7ad0273828f6abb9
[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" "185d0769ef752c0e5ecc7fb251a0f8e15d83791f0e5a59dd7ad0273828f6abb9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "185d0769ef752c0e5ecc7fb251a0f8e15d83791f0e5a59dd7ad0273828f6abb9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "185d0769ef752c0e5ecc7fb251a0f8e15d83791f0e5a59dd7ad0273828f6abb9", kill_on_drop: false }`
[INFO] [stdout] 185d0769ef752c0e5ecc7fb251a0f8e15d83791f0e5a59dd7ad0273828f6abb9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", 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] 48ecd68adfd9c67a49d8b6ebe628f826e0553d2bebda069d2e22d165314647d9
[INFO] running `Command { std: "docker" "start" "-a" "48ecd68adfd9c67a49d8b6ebe628f826e0553d2bebda069d2e22d165314647d9", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.114
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[INFO] [stderr]    Compiling either v1.5.3
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[INFO] [stderr]     Checking shlex v0.1.1
[INFO] [stderr]     Checking lazy_format v1.7.4
[INFO] [stderr]    Compiling generic-array v0.14.3
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[INFO] [stderr]    Compiling time v0.2.16
[INFO] [stderr]    Compiling cookie v0.14.2
[INFO] [stderr]    Compiling openssl-src v111.9.0+1.1.1g
[INFO] [stderr]    Compiling libnghttp2-sys v0.1.4+1.41.0
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[INFO] [stderr]    Compiling curl-sys v0.4.34+curl-7.71.1
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[INFO] [stderr]    Compiling rand_core v0.5.1
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[INFO] [stderr]    Compiling rand_chacha v0.2.2
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[INFO] [stderr]    Compiling tempdir v0.3.7
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[INFO] [stderr]     Checking hkdf v0.9.0
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[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]    Compiling phf_codegen v0.7.24
[INFO] [stderr]    Compiling isolang v1.0.0
[INFO] [stderr]    Compiling phf_generator v0.8.0
[INFO] [stderr]     Checking h2 v0.1.26
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[INFO] [stderr]    Compiling phf_codegen v0.8.0
[INFO] [stderr]    Compiling string_cache_codegen v0.5.1
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.67
[INFO] [stderr]    Compiling synstructure v0.12.3
[INFO] [stderr]    Compiling syn-mid v0.5.0
[INFO] [stderr]    Compiling serde_derive v1.0.114
[INFO] [stderr]    Compiling pin-project-internal v0.4.23
[INFO] [stderr]    Compiling futures-macro v0.3.5
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling time-macros-impl v0.1.1
[INFO] [stderr]    Compiling async-attributes v1.1.1
[INFO] [stderr]    Compiling tracing-attributes v0.1.9
[INFO] [stderr]    Compiling thiserror-impl v1.0.20
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.2
[INFO] [stderr]    Compiling html5ever v0.25.1
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.67
[INFO] [stderr]     Checking time-macros v0.1.0
[INFO] [stderr]    Compiling failure v0.1.8
[INFO] [stderr]    Compiling graphql-parser v0.2.3
[INFO] [stderr]    Compiling proc-macro-error v1.0.2
[INFO] [stderr]     Checking thiserror v1.0.20
[INFO] [stderr]     Checking tracing v0.1.18
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.67
[INFO] [stderr]    Compiling structopt-derive v0.4.7
[INFO] [stderr]     Checking pin-project v0.4.23
[INFO] [stderr]     Checking futures-util v0.3.5
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[INFO] [stderr]     Checking js-sys v0.3.44
[INFO] [stderr]     Checking structopt v0.3.14
[INFO] [stderr]     Checking smol v0.1.18
[INFO] [stderr]     Checking futures-executor v0.3.5
[INFO] [stderr]     Checking sluice v0.5.2
[INFO] [stderr]     Checking web-sys v0.3.44
[INFO] [stderr]     Checking futures v0.3.5
[INFO] [stderr]    Compiling native-tls v0.2.4
[INFO] [stderr]     Checking url v2.1.1
[INFO] [stderr]     Checking serde_json v1.0.57
[INFO] [stderr]     Checking serde_qs v0.6.1
[INFO] [stderr]     Checking serde_urlencoded v0.5.5
[INFO] [stderr]     Checking chrono v0.4.11
[INFO] [stderr]     Checking string_cache v0.8.0
[INFO] [stderr]     Checking toml v0.5.6
[INFO] [stderr]     Checking serde_qs v0.4.6
[INFO] [stderr]     Checking gloo-timers v0.2.1
[INFO] [stderr]     Checking futures-timer v3.0.2
[INFO] [stderr]     Checking serde_urlencoded v0.6.1
[INFO] [stderr]     Checking publicsuffix v1.5.4
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling graphql-introspection-query v0.1.0
[INFO] [stderr]     Checking async-std v1.6.2
[INFO] [stderr]     Checking flexi_logger v0.15.2
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]     Checking cookie_store v0.7.0
[INFO] [stderr]    Compiling parking_lot_core v0.6.2
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]    Compiling hyper v0.12.35
[INFO] [stderr]     Checking tungstenite v0.10.1
[INFO] [stderr]     Checking attohttpc v0.13.0
[INFO] [stderr]    Compiling cargo_metadata v0.6.4
[INFO] [stderr]    Compiling graphql_client_codegen v0.9.0
[INFO] [stderr]    Compiling markup5ever v0.10.0
[INFO] [stderr]     Checking tokio-reactor v0.1.12
[INFO] [stderr]     Checking tokio-tcp v0.1.4
[INFO] [stderr]     Checking tokio v0.1.22
[INFO] [stderr]    Compiling skeptic v0.13.4
[INFO] [stderr]    Compiling elefren v0.22.0
[INFO] [stderr]    Compiling graphql_query_derive v0.9.0
[INFO] [stderr]     Checking hyper-tls v0.3.2
[INFO] [stderr]     Checking reqwest v0.9.24
[INFO] [stderr]     Checking http-types v2.4.0
[INFO] [stderr]     Checking async-native-tls v0.3.3
[INFO] [stderr]     Checking async-h1 v2.1.2
[INFO] [stderr]     Checking http-client v3.0.0
[INFO] [stderr]     Checking graphql_client v0.9.0
[INFO] [stderr]     Checking surf v2.0.0-alpha.4
[INFO] [stderr]     Checking crom v0.2.0
[INFO] [stderr]  Documenting mastocrom v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(never_type)]
[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 `mastocrom`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name mastocrom src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern anyhow=/opt/rustwide/target/debug/deps/libanyhow-70b362b0d3f6c020.rmeta --extern async_std=/opt/rustwide/target/debug/deps/libasync_std-b6f0d6dcb11d24f6.rmeta --extern attohttpc=/opt/rustwide/target/debug/deps/libattohttpc-efd427e3c598f54e.rmeta --extern crom=/opt/rustwide/target/debug/deps/libcrom-0976365c0d36f50e.rmeta --extern elefren=/opt/rustwide/target/debug/deps/libelefren-89fc357f6f6c92f4.rmeta --extern flexi_logger=/opt/rustwide/target/debug/deps/libflexi_logger-33052aba2f5288a7.rmeta --extern graphql_client=/opt/rustwide/target/debug/deps/libgraphql_client-ab14a069ad614468.rmeta --extern html5ever=/opt/rustwide/target/debug/deps/libhtml5ever-da89cd8c1d4dd33e.rmeta --extern http_client=/opt/rustwide/target/debug/deps/libhttp_client-15086d4e5654dcbc.rmeta --extern itertools=/opt/rustwide/target/debug/deps/libitertools-83b0824e0e267623.rmeta --extern lazy_format=/opt/rustwide/target/debug/deps/liblazy_format-341cde76dad7cde0.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-6bdba6c1562fbb28.rmeta --extern openssl=/opt/rustwide/target/debug/deps/libopenssl-90bcf327128b29d8.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-fd6d623ecb131769.rmeta --extern shlex=/opt/rustwide/target/debug/deps/libshlex-71bac8f39d2db1d9.rmeta --extern structopt=/opt/rustwide/target/debug/deps/libstructopt-8a173abbbaac1edd.rmeta --extern url=/opt/rustwide/target/debug/deps/liburl-b4c9816555ba3efc.rmeta --cap-lints=warn --crate-version 0.1.0` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "48ecd68adfd9c67a49d8b6ebe628f826e0553d2bebda069d2e22d165314647d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "48ecd68adfd9c67a49d8b6ebe628f826e0553d2bebda069d2e22d165314647d9", kill_on_drop: false }`
[INFO] [stdout] 48ecd68adfd9c67a49d8b6ebe628f826e0553d2bebda069d2e22d165314647d9