[INFO] updating cached repository mkane0814/rIRC
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/mkane0814/rIRC
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/mkane0814/rIRC" "work/ex/beta-1.38-1/sources/1.37.0/gh/mkane0814/rIRC"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/mkane0814/rIRC'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/mkane0814/rIRC" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/mkane0814/rIRC"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/mkane0814/rIRC'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 9b5596f22f60392229f4a3ec8bf526a8cb564788
[INFO] sha for GitHub repo mkane0814/rIRC: 9b5596f22f60392229f4a3ec8bf526a8cb564788
[INFO] validating manifest of mkane0814/rIRC on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of mkane0814/rIRC on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing mkane0814/rIRC
[INFO] finished frobbing mkane0814/rIRC
[INFO] frobbed toml for mkane0814/rIRC written to work/ex/beta-1.38-1/sources/1.37.0/gh/mkane0814/rIRC/Cargo.toml
[INFO] started frobbing mkane0814/rIRC
[INFO] finished frobbing mkane0814/rIRC
[INFO] frobbed toml for mkane0814/rIRC written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/mkane0814/rIRC/Cargo.toml
[INFO] crate mkane0814/rIRC already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing mkane0814/rIRC against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/mkane0814/rIRC:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] e4dbf47c7ab3986fb7b7fa716e84016f286552b07e75f152b64202d8bb936a67
[INFO] running `"docker" "start" "-a" "e4dbf47c7ab3986fb7b7fa716e84016f286552b07e75f152b64202d8bb936a67"`
[INFO] [stderr]    Compiling gio v0.4.1
[INFO] [stderr]    Compiling cairo-rs v0.4.1
[INFO] [stderr]    Compiling gdk-pixbuf v0.4.0
[INFO] [stderr]    Compiling gdk v0.8.0
[INFO] [stderr]    Compiling c_vec v1.3.1
[INFO] [stderr]    Compiling gtk v0.4.1
[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 pango-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 gdk-sys v0.6.0
[INFO] [stderr]    Compiling atk-sys v0.6.0
[INFO] [stderr]    Compiling gtk-sys v0.6.0
[INFO] [stderr]    Compiling tokio-timer v0.1.2
[INFO] [stderr]    Compiling tokio-io v0.1.7
[INFO] [stderr]    Compiling syn v0.14.5
[INFO] [stderr]    Compiling tokio-threadpool v0.1.5
[INFO] [stderr]    Compiling tokio-reactor v0.1.2
[INFO] [stderr]    Compiling tokio-codec v0.1.0
[INFO] [stderr]    Compiling tokio-fs v0.1.2
[INFO] [stderr]    Compiling tokio-mockstream v1.1.0
[INFO] [stderr]    Compiling tokio-udp v0.1.1
[INFO] [stderr]    Compiling tokio-tcp v0.1.0
[INFO] [stderr]    Compiling tokio v0.1.7
[INFO] [stderr]    Compiling glib v0.5.0
[INFO] [stderr]    Compiling tokio-core v0.1.17
[INFO] [stderr]    Compiling tokio-tls v0.1.4
[INFO] [stderr]    Compiling 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 serde_derive v1.0.70
[INFO] [stderr]    Compiling relm-attributes v0.14.6
[INFO] [stderr]    Compiling relm-derive v0.14.6
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/relm-attributes-0.14.6/src/lib.rs:22:1
[INFO] [stderr]    |
[INFO] [stderr] 22 | #![feature(proc_macro)]
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: Could not compile `relm-attributes`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "e4dbf47c7ab3986fb7b7fa716e84016f286552b07e75f152b64202d8bb936a67"`
[INFO] running `"docker" "rm" "-f" "e4dbf47c7ab3986fb7b7fa716e84016f286552b07e75f152b64202d8bb936a67"`
[INFO] [stdout] e4dbf47c7ab3986fb7b7fa716e84016f286552b07e75f152b64202d8bb936a67