[INFO] cloning repository https://github.com/elkowar/eww
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/elkowar/eww" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Felkowar%2Feww", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Felkowar%2Feww'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0207ccaf3dc6bcfe5ef46e22c7f8957c9256cb09
[INFO] documenting elkowar/eww 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%2Felkowar%2Feww" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/elkowar/eww 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/elkowar/eww
[INFO] finished tweaking git repo https://github.com/elkowar/eww
[INFO] tweaked toml for git repo https://github.com/elkowar/eww written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/elkowar/eww 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 82b7c0e622d52a986fd88e2cac6a9457e105b02ad544ee695d6b06e3bd7b9c05
[INFO] running `Command { std: "docker" "start" "-a" "82b7c0e622d52a986fd88e2cac6a9457e105b02ad544ee695d6b06e3bd7b9c05", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "82b7c0e622d52a986fd88e2cac6a9457e105b02ad544ee695d6b06e3bd7b9c05", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "82b7c0e622d52a986fd88e2cac6a9457e105b02ad544ee695d6b06e3bd7b9c05", kill_on_drop: false }`
[INFO] [stdout] 82b7c0e622d52a986fd88e2cac6a9457e105b02ad544ee695d6b06e3bd7b9c05
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] [stdout] b40f266a32f39432aabe686b1a061c9c902f40b5dfa590a647cfc0e5b3d89850
[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" "b40f266a32f39432aabe686b1a061c9c902f40b5dfa590a647cfc0e5b3d89850", kill_on_drop: false }`
[INFO] [stderr]    Compiling strum v0.18.0
[INFO] [stderr]     Checking futures v0.1.30
[INFO] [stderr]     Checking futures-core v0.3.6
[INFO] [stderr]     Checking futures-io v0.3.6
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling gio v0.9.1
[INFO] [stderr]    Compiling gdk-pixbuf v0.9.0
[INFO] [stderr]    Compiling pango v0.9.1
[INFO] [stderr]    Compiling cairo-rs v0.9.1
[INFO] [stderr]    Compiling gdk v0.13.2
[INFO] [stderr]    Compiling atk v0.9.0
[INFO] [stderr]     Checking codemap v0.1.3
[INFO] [stderr]     Checking beef v0.4.4
[INFO] [stderr]     Checking stoppable_thread v0.2.1
[INFO] [stderr]     Checking maplit v1.0.2
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling num-bigint v0.3.0
[INFO] [stderr]    Compiling num-rational v0.3.0
[INFO] [stderr]    Compiling hashbrown v0.8.2
[INFO] [stderr]    Compiling num-iter v0.1.41
[INFO] [stderr]     Checking futures-task v0.3.6
[INFO] [stderr]    Compiling gtk v0.9.2
[INFO] [stderr]     Checking peekmore v0.5.4
[INFO] [stderr]     Checking roxmltree v0.13.0
[INFO] [stderr]     Checking futures-channel v0.3.6
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]    Compiling anyhow v1.0.33
[INFO] [stderr]     Checking getrandom v0.1.15
[INFO] [stderr]     Checking inotify-sys v0.1.3
[INFO] [stderr]     Checking filetime v0.2.12
[INFO] [stderr]     Checking popol v0.3.0
[INFO] [stderr]    Compiling debug_stub_derive v0.3.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking crossbeam-channel v0.4.4
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]    Compiling thiserror-impl v1.0.21
[INFO] [stderr]    Compiling strum_macros v0.18.0
[INFO] [stderr]    Compiling futures-macro v0.3.6
[INFO] [stderr]    Compiling ref-cast-impl v1.0.2
[INFO] [stderr]    Compiling derive_more v0.99.11
[INFO] [stderr]     Checking inotify v0.7.1
[INFO] [stderr]     Checking mio-uds v0.6.8
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking parking_lot_core v0.6.2
[INFO] [stderr]    Compiling toml v0.5.7
[INFO] [stderr]     Checking bincode v1.3.1
[INFO] [stderr]     Checking crossbeam-epoch v0.8.2
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand_pcg v0.2.1
[INFO] [stderr]     Checking notify v4.0.15
[INFO] [stderr]     Checking pretty_env_logger v0.4.0
[INFO] [stderr]     Checking parking_lot v0.9.0
[INFO] [stderr]     Checking lasso v0.3.1
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking crossbeam-deque v0.7.3
[INFO] [stderr]     Checking tokio-executor v0.1.10
[INFO] [stderr]     Checking tokio-io v0.1.13
[INFO] [stderr]     Checking tokio-sync v0.1.8
[INFO] [stderr]     Checking futures-cpupool v0.1.8
[INFO] [stderr]     Checking hotwatch v0.4.3
[INFO] [stderr]     Checking tokio-threadpool v0.1.18
[INFO] [stderr]     Checking tokio-current-thread v0.1.7
[INFO] [stderr]     Checking tokio-timer v0.2.13
[INFO] [stderr]     Checking ref-cast v1.0.2
[INFO] [stderr]     Checking num-complex v0.3.0
[INFO] [stderr]     Checking tokio-codec v0.1.2
[INFO] [stderr]    Compiling structopt-derive v0.4.12
[INFO] [stderr]    Compiling try_match_inner v0.2.0
[INFO] [stderr]    Compiling extend v0.3.0
[INFO] [stderr]     Checking tokio-reactor v0.1.12
[INFO] [stderr]     Checking futures-util v0.3.6
[INFO] [stderr]     Checking tokio-fs v0.1.7
[INFO] [stderr]     Checking tokio-udp v0.1.6
[INFO] [stderr]     Checking tokio-tcp v0.1.4
[INFO] [stderr]     Checking tokio-uds v0.2.7
[INFO] [stderr]    Compiling proc-macro-crate v0.1.5
[INFO] [stderr]     Checking tokio v0.1.22
[INFO] [stderr]    Compiling phf_generator v0.8.0
[INFO] [stderr]    Compiling thiserror v1.0.21
[INFO] [stderr]     Checking tokio-core v0.1.17
[INFO] [stderr]    Compiling glib-macros v0.10.1
[INFO] [stderr]    Compiling system-deps v1.3.2
[INFO] [stderr]    Compiling phf_macros v0.8.0
[INFO] [stderr]     Checking try_match v0.2.2
[INFO] [stderr]     Checking scheduled-executor v0.4.0
[INFO] [stderr]    Compiling glib-sys v0.10.1
[INFO] [stderr]    Compiling gobject-sys v0.10.0
[INFO] [stderr]    Compiling gio-sys v0.10.1
[INFO] [stderr]    Compiling gdk-pixbuf-sys v0.10.0
[INFO] [stderr]    Compiling pango-sys v0.10.0
[INFO] [stderr]    Compiling cairo-sys-rs v0.10.0
[INFO] [stderr]    Compiling gdk-sys v0.10.0
[INFO] [stderr]    Compiling atk-sys v0.10.0
[INFO] [stderr]    Compiling gtk-sys v0.10.0
[INFO] [stderr]     Checking num v0.3.0
[INFO] [stderr]     Checking structopt v0.3.19
[INFO] [stderr]     Checking phf v0.8.0
[INFO] [stderr]     Checking grass v0.10.3
[INFO] [stderr]     Checking futures-executor v0.3.6
[INFO] [stderr]     Checking glib v0.10.2
[INFO] [stderr]     Checking futures v0.3.6
[INFO] [stderr]  Documenting eww v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(trace_macros)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(slice_concat_trait)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(result_cloned)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(iterator_fold_self)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(try_blocks)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:6:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | #![feature(str_split_once)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 7 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 `eww`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name eww 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 anyhow=/opt/rustwide/target/debug/deps/libanyhow-e8218b22857a1d1d.rmeta --extern bincode=/opt/rustwide/target/debug/deps/libbincode-93d4460f1beea64a.rmeta --extern crossbeam_channel=/opt/rustwide/target/debug/deps/libcrossbeam_channel-70ab6c11dfb5dbe1.rmeta --extern debug_stub_derive=/opt/rustwide/target/debug/deps/libdebug_stub_derive-1a346a3b149f642c.so --extern derive_more=/opt/rustwide/target/debug/deps/libderive_more-54fa7311859bcdca.so --extern extend=/opt/rustwide/target/debug/deps/libextend-447b697fa5139797.so --extern gdk=/opt/rustwide/target/debug/deps/libgdk-168e1e32bffb4bf1.rmeta --extern gdk_pixbuf=/opt/rustwide/target/debug/deps/libgdk_pixbuf-0e0c37805fb85917.rmeta --extern gio=/opt/rustwide/target/debug/deps/libgio-ba3736881ecaf378.rmeta --extern glib=/opt/rustwide/target/debug/deps/libglib-4e274b05b078cce8.rmeta --extern grass=/opt/rustwide/target/debug/deps/libgrass-157253b245206504.rmeta --extern gtk=/opt/rustwide/target/debug/deps/libgtk-5585f75097553a99.rmeta --extern hotwatch=/opt/rustwide/target/debug/deps/libhotwatch-d7a07319f0a1e7ed.rmeta --extern itertools=/opt/rustwide/target/debug/deps/libitertools-06e4219b5ed9c5cf.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-72923b2d9aa06af7.rmeta --extern libc=/opt/rustwide/target/debug/deps/liblibc-0d4e59a692e831a5.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-48fbfd5d624c4cb9.rmeta --extern maplit=/opt/rustwide/target/debug/deps/libmaplit-6294c5e3b8c58b26.rmeta --extern notify=/opt/rustwide/target/debug/deps/libnotify-b63a3b24f1ba596c.rmeta --extern num=/opt/rustwide/target/debug/deps/libnum-edf67bdc3adc9a8a.rmeta --extern popol=/opt/rustwide/target/debug/deps/libpopol-8741fbfd811fb969.rmeta --extern pretty_env_logger=/opt/rustwide/target/debug/deps/libpretty_env_logger-62d6126951a5fad3.rmeta --extern ref_cast=/opt/rustwide/target/debug/deps/libref_cast-600e15c687eb36c2.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-0879519133e6417a.rmeta --extern roxmltree=/opt/rustwide/target/debug/deps/libroxmltree-f0fa0b40b6480b05.rmeta --extern scheduled_executor=/opt/rustwide/target/debug/deps/libscheduled_executor-28072fcd8b045085.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-f902fcdd1968bfca.rmeta --extern stoppable_thread=/opt/rustwide/target/debug/deps/libstoppable_thread-33b09e29406d3e90.rmeta --extern structopt=/opt/rustwide/target/debug/deps/libstructopt-54a91b9637d1bbbc.rmeta --extern try_match=/opt/rustwide/target/debug/deps/libtry_match-be892cb9c1e5071a.rmeta --cap-lints=warn --crate-version 0.1.0` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "b40f266a32f39432aabe686b1a061c9c902f40b5dfa590a647cfc0e5b3d89850", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b40f266a32f39432aabe686b1a061c9c902f40b5dfa590a647cfc0e5b3d89850", kill_on_drop: false }`
[INFO] [stdout] b40f266a32f39432aabe686b1a061c9c902f40b5dfa590a647cfc0e5b3d89850
