[INFO] cloning repository https://github.com/MeisterTea/malabar
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/MeisterTea/malabar" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMeisterTea%2Fmalabar", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMeisterTea%2Fmalabar'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 15fef83aadb9d9d7d01cd0831fc5cde8392a6e81
[INFO] documenting MeisterTea/malabar 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%2FMeisterTea%2Fmalabar" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/MeisterTea/malabar 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/MeisterTea/malabar
[INFO] finished tweaking git repo https://github.com/MeisterTea/malabar
[INFO] tweaked toml for git repo https://github.com/MeisterTea/malabar written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/MeisterTea/malabar 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]     Updating git repository `https://github.com/diwic/alsa-rs`
[INFO] [stderr]     Updating git repository `https://github.com/Mange/mpris-rs`
[INFO] [stderr]     Updating git submodule `https://anongit.freedesktop.org/git/xdg/mpris-spec.git`
[INFO] [stderr]     Updating git repository `https://github.com/HiruNya/x11_get_windows`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded gdk v0.9.0
[INFO] [stderr]   Downloaded futures-preview v0.2.2
[INFO] [stderr]   Downloaded pango v0.5.0
[INFO] [stderr]   Downloaded autocfg v0.1.1
[INFO] [stderr]   Downloaded failure v0.1.4
[INFO] [stderr]   Downloaded futures-io-preview v0.2.2
[INFO] [stderr]   Downloaded gtk-sys v0.7.0
[INFO] [stderr]   Downloaded libc v0.2.45
[INFO] [stderr]   Downloaded cairo-rs v0.5.0
[INFO] [stderr]   Downloaded time v0.1.41
[INFO] [stderr]   Downloaded failure_derive v0.1.4
[INFO] [stderr]   Downloaded fragile v0.3.0
[INFO] [stderr]   Downloaded textwrap v0.10.0
[INFO] [stderr]   Downloaded gdk-pixbuf v0.5.0
[INFO] [stderr]   Downloaded cairo-sys-rs v0.7.0
[INFO] [stderr]   Downloaded bitflags v0.9.1
[INFO] [stderr]   Downloaded derive_is_enum_variant v0.1.1
[INFO] [stderr]   Downloaded ident_case v1.0.0
[INFO] [stderr]   Downloaded enum-kinds v0.4.1
[INFO] [stderr]   Downloaded redox_syscall v0.1.44
[INFO] [stderr]   Downloaded clap v2.32.0
[INFO] [stderr]   Downloaded syn v0.15.23
[INFO] [stderr]   Downloaded nix v0.9.0
[INFO] [stderr]   Downloaded gtk v0.5.0
[INFO] [stderr]   Downloaded syn v0.12.15
[INFO] [stderr]   Downloaded darling v0.5.0
[INFO] [stderr]   Downloaded num_cpus v1.9.0
[INFO] [stderr]   Downloaded futures-channel-preview v0.2.2
[INFO] [stderr]   Downloaded libdbus-sys v0.1.4
[INFO] [stderr]   Downloaded pango-sys v0.7.0
[INFO] [stderr]   Downloaded quote v0.6.10
[INFO] [stderr]   Downloaded quote v0.5.2
[INFO] [stderr]   Downloaded gdk-sys v0.7.0
[INFO] [stderr]   Downloaded gio-sys v0.7.0
[INFO] [stderr]   Downloaded from_variants_impl v0.4.0
[INFO] [stderr]   Downloaded darling_macro v0.5.0
[INFO] [stderr]   Downloaded darling_core v0.5.0
[INFO] [stderr]   Downloaded gdk-pixbuf-sys v0.7.0
[INFO] [stderr]   Downloaded from_variants v0.4.0
[INFO] [stderr]   Downloaded futures-async-runtime-preview v0.2.3
[INFO] [stderr]   Downloaded futures-util-preview v0.2.2
[INFO] [stderr]   Downloaded futures-core-preview v0.2.3
[INFO] [stderr]   Downloaded glib-sys v0.7.0
[INFO] [stderr]   Downloaded gobject-sys v0.7.0
[INFO] [stderr]   Downloaded x11 v2.18.1
[INFO] [stderr]   Downloaded gio v0.5.1
[INFO] [stderr]   Downloaded cc v1.0.26
[INFO] [stderr]   Downloaded atk-sys v0.7.0
[INFO] [stderr]   Downloaded glib v0.6.1
[INFO] [stderr]   Downloaded syn v0.13.11
[INFO] [stderr]   Downloaded proc-macro2 v0.3.8
[INFO] [stderr]   Downloaded futures-stable-preview v0.2.3
[INFO] [stderr]   Downloaded futures-executor-preview v0.2.2
[INFO] [stderr]   Downloaded futures-sink-preview v0.2.2
[INFO] [stderr]   Downloaded rustc-demangle v0.1.11
[INFO] [stderr]   Downloaded proc-macro2 v0.4.24
[INFO] [stderr]   Downloaded chrono v0.4.6
[INFO] [stderr]   Downloaded dbus v0.6.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] 0d597d6b5f3e8aa65b80710517269a0d572067b9e4de4ccab43b03c584270d6d
[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" "0d597d6b5f3e8aa65b80710517269a0d572067b9e4de4ccab43b03c584270d6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0d597d6b5f3e8aa65b80710517269a0d572067b9e4de4ccab43b03c584270d6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0d597d6b5f3e8aa65b80710517269a0d572067b9e4de4ccab43b03c584270d6d", kill_on_drop: false }`
[INFO] [stdout] 0d597d6b5f3e8aa65b80710517269a0d572067b9e4de4ccab43b03c584270d6d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] fc085fc2805a9bd86f799aa24f22dd2b85a803d3ca13cad6e020939a8841afab
[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" "fc085fc2805a9bd86f799aa24f22dd2b85a803d3ca13cad6e020939a8841afab", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.45
[INFO] [stderr]     Checking either v1.5.0
[INFO] [stderr]    Compiling ident_case v1.0.0
[INFO] [stderr]    Compiling cc v1.0.26
[INFO] [stderr]    Compiling gio v0.5.1
[INFO] [stderr]    Compiling cairo-rs v0.5.0
[INFO] [stderr]    Compiling gdk-pixbuf v0.5.0
[INFO] [stderr]     Checking fragile v0.3.0
[INFO] [stderr]    Compiling failure_derive v0.1.4
[INFO] [stderr]    Compiling error-chain v0.11.0
[INFO] [stderr]     Checking rustc-demangle v0.1.11
[INFO] [stderr]    Compiling gdk v0.9.0
[INFO] [stderr]    Compiling gtk v0.5.0
[INFO] [stderr]    Compiling glib-sys v0.7.0
[INFO] [stderr]    Compiling gobject-sys v0.7.0
[INFO] [stderr]    Compiling gio-sys v0.7.0
[INFO] [stderr]    Compiling gdk-pixbuf-sys v0.7.0
[INFO] [stderr]    Compiling cairo-sys-rs v0.7.0
[INFO] [stderr]    Compiling pango-sys v0.7.0
[INFO] [stderr]    Compiling gdk-sys v0.7.0
[INFO] [stderr]    Compiling atk-sys v0.7.0
[INFO] [stderr]    Compiling libdbus-sys v0.1.4
[INFO] [stderr]    Compiling gtk-sys v0.7.0
[INFO] [stderr]    Compiling x11 v2.18.1
[INFO] [stderr]    Compiling alsa-sys v0.1.2
[INFO] [stderr]     Checking futures-core-preview v0.2.3
[INFO] [stderr]    Compiling quote v0.5.2
[INFO] [stderr]    Compiling derive_is_enum_variant v0.1.1
[INFO] [stderr]    Compiling syn v0.15.23
[INFO] [stderr]    Compiling enum-kinds v0.4.1
[INFO] [stderr]    Compiling syn v0.13.11
[INFO] [stderr]     Checking futures-channel-preview v0.2.2
[INFO] [stderr]     Checking futures-sink-preview v0.2.2
[INFO] [stderr]     Checking iovec v0.1.2
[INFO] [stderr]     Checking num_cpus v1.9.0
[INFO] [stderr]     Checking dbus v0.6.3
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking time v0.1.41
[INFO] [stderr]     Checking nix v0.9.0
[INFO] [stderr]    Compiling backtrace-sys v0.1.28
[INFO] [stderr]     Checking clap v2.32.0
[INFO] [stderr]     Checking futures-io-preview v0.2.2
[INFO] [stderr]     Checking futures-util-preview v0.2.2
[INFO] [stderr]     Checking chrono v0.4.6
[INFO] [stderr]     Checking backtrace v0.3.13
[INFO] [stderr]     Checking futures-executor-preview v0.2.2
[INFO] [stderr]     Checking futures-stable-preview v0.2.3
[INFO] [stderr]     Checking futures-async-runtime-preview v0.2.3
[INFO] [stderr]     Checking futures-preview v0.2.2
[INFO] [stderr]     Checking glib v0.6.1
[INFO] [stderr]     Checking x11_get_windows v0.1.0 (https://github.com/HiruNya/x11_get_windows#a5c733b2)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/git/checkouts/x11_get_windows-219f2005d75238ab/a5c733b/src/lib.rs:64:1
[INFO] [stdout]    |
[INFO] [stdout] 64 | #![feature(dbg_macro)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[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: could not compile `x11_get_windows`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "fc085fc2805a9bd86f799aa24f22dd2b85a803d3ca13cad6e020939a8841afab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fc085fc2805a9bd86f799aa24f22dd2b85a803d3ca13cad6e020939a8841afab", kill_on_drop: false }`
[INFO] [stdout] fc085fc2805a9bd86f799aa24f22dd2b85a803d3ca13cad6e020939a8841afab