[INFO] cloning repository https://github.com/Bunogi/lyric-db
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Bunogi/lyric-db" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBunogi%2Flyric-db", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBunogi%2Flyric-db'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e46b919697738476bcba491e18da683871e29c30
[INFO] documenting Bunogi/lyric-db 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%2FBunogi%2Flyric-db" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Bunogi/lyric-db 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/Bunogi/lyric-db
[INFO] finished tweaking git repo https://github.com/Bunogi/lyric-db
[INFO] tweaked toml for git repo https://github.com/Bunogi/lyric-db written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/Bunogi/lyric-db 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]  Downloading crates ...
[INFO] [stderr]   Downloaded relm-derive v0.14.6
[INFO] [stderr]   Downloaded relm-state v0.14.6
[INFO] [stderr]   Downloaded relm-core v0.14.6
[INFO] [stderr]   Downloaded treexml v0.6.2
[INFO] [stderr]   Downloaded relm-derive-common v0.14.6
[INFO] [stderr]   Downloaded relm-gen-widget v0.14.6
[INFO] [stderr]   Downloaded rustdoc-stripper v0.1.5
[INFO] [stderr]   Downloaded relm v0.14.6
[INFO] [stderr]   Downloaded gtk-rs-lgpl-docs v0.1.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] efdcb353f9c95b1e50b83d2b71e7402664d7b0e8755c6188b905d228ae60707c
[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" "efdcb353f9c95b1e50b83d2b71e7402664d7b0e8755c6188b905d228ae60707c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "efdcb353f9c95b1e50b83d2b71e7402664d7b0e8755c6188b905d228ae60707c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "efdcb353f9c95b1e50b83d2b71e7402664d7b0e8755c6188b905d228ae60707c", kill_on_drop: false }`
[INFO] [stdout] efdcb353f9c95b1e50b83d2b71e7402664d7b0e8755c6188b905d228ae60707c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] [stdout] ea611661b008387a4edd8a8d38e7f9d1c76997c3f08e4fc77967f24ca77b4039
[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" "ea611661b008387a4edd8a8d38e7f9d1c76997c3f08e4fc77967f24ca77b4039", kill_on_drop: false }`
[INFO] [stderr]    Compiling pkg-config v0.3.12
[INFO] [stderr]    Compiling rustdoc-stripper v0.1.5
[INFO] [stderr]     Checking lazy_static v1.0.2
[INFO] [stderr]    Compiling cc v1.0.18
[INFO] [stderr]     Checking cfg-if v0.1.4
[INFO] [stderr]    Compiling proc-macro2 v0.4.9
[INFO] [stderr]     Checking log v0.4.3
[INFO] [stderr]    Compiling glib-sys v0.6.0
[INFO] [stderr]    Compiling gobject-sys v0.6.0
[INFO] [stderr]    Compiling gio-sys v0.6.0
[INFO] [stderr]    Compiling cairo-sys-rs v0.6.0
[INFO] [stderr]    Compiling gdk-pixbuf-sys v0.6.0
[INFO] [stderr]    Compiling pango-sys v0.6.0
[INFO] [stderr]    Compiling gdk-sys v0.6.0
[INFO] [stderr]    Compiling atk-sys v0.6.0
[INFO] [stderr]    Compiling gtk-sys v0.6.0
[INFO] [stderr]    Compiling quote v0.6.4
[INFO] [stderr]    Compiling gtk-rs-lgpl-docs v0.1.6
[INFO] [stderr]    Compiling backtrace-sys v0.1.23
[INFO] [stderr]    Compiling syn v0.14.5
[INFO] [stderr]    Compiling gio v0.4.1
[INFO] [stderr]    Compiling gdk-pixbuf v0.4.0
[INFO] [stderr]    Compiling cairo-rs v0.4.1
[INFO] [stderr]    Compiling gdk v0.8.0
[INFO] [stderr]    Compiling gtk v0.4.1
[INFO] [stderr]     Checking backtrace v0.3.9
[INFO] [stderr]     Checking error-chain v0.11.0
[INFO] [stderr]     Checking treexml v0.6.2
[INFO] [stderr]     Checking glib v0.5.0
[INFO] [stderr]     Checking pango v0.4.0
[INFO] [stderr]    Compiling relm-gen-widget v0.14.6
[INFO] [stderr]    Compiling relm-derive-common v0.14.6
[INFO] [stderr]    Compiling relm-derive v0.14.6
[INFO] [stderr]     Checking relm-core v0.14.6
[INFO] [stderr]     Checking relm-state v0.14.6
[INFO] [stderr]     Checking relm v0.14.6
[INFO] [stderr]  Documenting lyrics v0.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(use_extern_macros)]
[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:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(extern_prelude)]
[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 `lyrics`.
[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 --crate-type bin --crate-name lyrics 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 gtk=/opt/rustwide/target/debug/deps/libgtk-a1c9ac648f3b129a.rmeta --extern relm=/opt/rustwide/target/debug/deps/librelm-932e8b9da6ebe021.rmeta --extern relm_derive=/opt/rustwide/target/debug/deps/librelm_derive-a4b10db932425730.so --extern treexml=/opt/rustwide/target/debug/deps/libtreexml-58f1e6db2a29fed9.rmeta --cap-lints=warn --crate-version 0.0.0` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "ea611661b008387a4edd8a8d38e7f9d1c76997c3f08e4fc77967f24ca77b4039", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ea611661b008387a4edd8a8d38e7f9d1c76997c3f08e4fc77967f24ca77b4039", kill_on_drop: false }`
[INFO] [stdout] ea611661b008387a4edd8a8d38e7f9d1c76997c3f08e4fc77967f24ca77b4039