[INFO] cloning repository https://github.com/hatoo/Accepted
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hatoo/Accepted" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhatoo%2FAccepted", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhatoo%2FAccepted'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ca0ee10fcab358920fdc3c5060e31374479bee75
[INFO] documenting hatoo/Accepted against 1.47.0 for beta-1.48-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhatoo%2FAccepted" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/hatoo/Accepted on toolchain 1.47.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/hatoo/Accepted
[INFO] finished tweaking git repo https://github.com/hatoo/Accepted
[INFO] tweaked toml for git repo https://github.com/hatoo/Accepted written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/hatoo/Accepted already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+1.47.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 996388278b477ccfb881da12d299205372db166f76c513cba4213b8ec1a06118
[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" "996388278b477ccfb881da12d299205372db166f76c513cba4213b8ec1a06118", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "996388278b477ccfb881da12d299205372db166f76c513cba4213b8ec1a06118", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "996388278b477ccfb881da12d299205372db166f76c513cba4213b8ec1a06118", kill_on_drop: false }`
[INFO] [stdout] 996388278b477ccfb881da12d299205372db166f76c513cba4213b8ec1a06118
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+1.47.0" "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] f3b0b59db62958243660859593a3110e614d37992cb70b8f6f528740dda7f17d
[INFO] running `Command { std: "docker" "start" "-a" "f3b0b59db62958243660859593a3110e614d37992cb70b8f6f528740dda7f17d", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.16
[INFO] [stderr]    Compiling regex-syntax v0.6.14
[INFO] [stderr]     Checking numtoa v0.1.0
[INFO] [stderr]     Checking iter-read v0.2.1
[INFO] [stderr]    Compiling ansi_colours v1.0.1
[INFO] [stderr]    Compiling libc v0.2.67
[INFO] [stderr]     Checking fuzzy-matcher v0.3.4
[INFO] [stderr]    Compiling aho-corasick v0.7.9
[INFO] [stderr]    Compiling libloading v0.5.2
[INFO] [stderr]     Checking mio v0.6.21
[INFO] [stderr]     Checking ropey v1.1.0
[INFO] [stderr]     Checking shellexpand v2.0.0
[INFO] [stderr]    Compiling rbtag_derive v0.3.0
[INFO] [stderr]     Checking termion v1.5.5
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]    Compiling backtrace-sys v0.1.32
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling clang-sys v0.28.1
[INFO] [stderr]    Compiling backtrace v0.3.44
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling failure v0.1.6
[INFO] [stderr]     Checking rbtag v0.3.0
[INFO] [stderr]    Compiling which v2.0.1
[INFO] [stderr]     Checking regex v1.3.4
[INFO] [stderr]    Compiling env_logger v0.6.2
[INFO] [stderr]    Compiling bindgen v0.50.1
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]    Compiling proc-macro-hack v0.5.11
[INFO] [stderr]    Compiling tokio-macros v0.2.5
[INFO] [stderr]    Compiling serde_repr v0.1.5
[INFO] [stderr]    Compiling async-trait v0.1.24
[INFO] [stderr]     Checking tokio v0.2.13
[INFO] [stderr]    Compiling futures-macro v0.3.4
[INFO] [stderr]     Checking futures-util v0.3.4
[INFO] [stderr]    Compiling onig_sys v69.2.0
[INFO] [stderr]     Checking futures-executor v0.3.4
[INFO] [stderr]     Checking serde v1.0.104
[INFO] [stderr]     Checking futures v0.3.4
[INFO] [stderr]     Checking serde_json v1.0.48
[INFO] [stderr]     Checking url v2.1.1
[INFO] [stderr]     Checking plist v0.4.2
[INFO] [stderr]     Checking bincode v1.2.1
[INFO] [stderr]     Checking toml v0.5.6
[INFO] [stderr]     Checking jsonrpc-core v14.0.5
[INFO] [stderr]     Checking lsp-types v0.71.0
[INFO] [stderr]     Checking onig v5.0.0
[INFO] [stderr]     Checking syntect v3.3.0
[INFO] [stderr]     Checking accepted v0.3.2 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting accepted v0.3.2 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(bound_cloned)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(bound_cloned)]
[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 `accepted`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name accepted 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 aho_corasick=/opt/rustwide/target/debug/deps/libaho_corasick-539d3fa72d12d376.rmeta --extern ansi_colours=/opt/rustwide/target/debug/deps/libansi_colours-34657ecbc25a25ef.rmeta --extern anyhow=/opt/rustwide/target/debug/deps/libanyhow-7ae3de6afc6348c5.rmeta --extern async_trait=/opt/rustwide/target/debug/deps/libasync_trait-ec735196362b1fc8.so --extern clap=/opt/rustwide/target/debug/deps/libclap-cf61ce2f5bb39255.rmeta --extern dirs=/opt/rustwide/target/debug/deps/libdirs-b11eb69330b15540.rmeta --extern futures=/opt/rustwide/target/debug/deps/libfutures-fe50e96e2a43255f.rmeta --extern fuzzy_matcher=/opt/rustwide/target/debug/deps/libfuzzy_matcher-7d4b08c43d59b0aa.rmeta --extern iter_read=/opt/rustwide/target/debug/deps/libiter_read-f89d480840c3e118.rmeta --extern jsonrpc_core=/opt/rustwide/target/debug/deps/libjsonrpc_core-4aae21f04fc52be6.rmeta --extern lsp_types=/opt/rustwide/target/debug/deps/liblsp_types-86f2aaf11034c783.rmeta --extern rayon=/opt/rustwide/target/debug/deps/librayon-9add926085ed3976.rmeta --extern rbtag=/opt/rustwide/target/debug/deps/librbtag-19bc2286c17f76dc.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-e32d0b10582d21cb.rmeta --extern ropey=/opt/rustwide/target/debug/deps/libropey-8f8a86ec475ec411.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-a9e2906de78ccfc8.rmeta --extern serde_derive=/opt/rustwide/target/debug/deps/libserde_derive-80bb20a5c1e1a3a8.so --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-e5fd2135a617a196.rmeta --extern shellexpand=/opt/rustwide/target/debug/deps/libshellexpand-b73e9c9bfc29e09a.rmeta --extern syntect=/opt/rustwide/target/debug/deps/libsyntect-50bf4c7a8a9f42d1.rmeta --extern termion=/opt/rustwide/target/debug/deps/libtermion-bfb5ac350be7f6dc.rmeta --extern tokio=/opt/rustwide/target/debug/deps/libtokio-7170fb69d317f41d.rmeta --extern toml=/opt/rustwide/target/debug/deps/libtoml-cbf7ff631245015e.rmeta --extern typemap=/opt/rustwide/target/debug/deps/libtypemap-07077e2e20f2bd0d.rmeta --extern unicode_width=/opt/rustwide/target/debug/deps/libunicode_width-4c331320a9b557ec.rmeta --cap-lints=warn --crate-version 0.3.2` (exit code: 1)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "f3b0b59db62958243660859593a3110e614d37992cb70b8f6f528740dda7f17d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f3b0b59db62958243660859593a3110e614d37992cb70b8f6f528740dda7f17d", kill_on_drop: false }`
[INFO] [stdout] f3b0b59db62958243660859593a3110e614d37992cb70b8f6f528740dda7f17d
