Sep 14 09:44:19.312 INFO checking rx_gtk-0.1.1 against master#90d36fb5905bbe5004f5b465ea14b53d10dae260 for pr-53578-1
Sep 14 09:44:19.312 INFO running: cargo +90d36fb5905bbe5004f5b465ea14b53d10dae260-alt check --frozen --all --all-targets
Sep 14 09:44:19.312 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-4/pr-53578-1/master#90d36fb5905bbe5004f5b465ea14b53d10dae260:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53578-1/worker-4/master#90d36fb5905bbe5004f5b465ea14b53d10dae260:/target:rw,Z" "-v" "/home/ec2-user/crater/./work/local/cargo-home:/cargo-home:ro,Z" "-v" "/home/ec2-user/crater/./work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "CMD=cargo +90d36fb5905bbe5004f5b465ea14b53d10dae260-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 14 09:44:19.772 INFO blam! c4a7b2e597f7e9f5c4a2ddcd876b651ba3d07df01ea17b8df4dab2682620538f
Sep 14 09:44:19.773 INFO running `"docker" "start" "-a" "c4a7b2e597f7e9f5c4a2ddcd876b651ba3d07df01ea17b8df4dab2682620538f"`
Sep 14 09:44:21.491 INFO kablam! usermod: no changes
Sep 14 09:44:21.677 INFO kablam!    Compiling gio v0.5.0
Sep 14 09:44:21.677 INFO kablam!    Compiling gdk-pixbuf v0.5.0
Sep 14 09:44:21.677 INFO kablam!    Compiling cairo-rs v0.5.0
Sep 14 09:44:21.677 INFO kablam!    Compiling gdk v0.9.0
Sep 14 09:44:21.680 INFO kablam!    Compiling gtk v0.5.0
Sep 14 09:44:21.680 INFO kablam!     Checking rxrs v0.1.0-alpha3
Sep 14 09:44:21.680 INFO kablam!    Compiling glib-sys v0.7.0
Sep 14 09:44:21.680 INFO kablam!    Compiling gobject-sys v0.7.0
Sep 14 09:44:24.527 INFO kablam!    Compiling gio-sys v0.7.0
Sep 14 09:44:24.530 INFO kablam!    Compiling cairo-sys-rs v0.7.0
Sep 14 09:44:25.115 INFO kablam!    Compiling pango-sys v0.7.0
Sep 14 09:44:25.311 INFO kablam!    Compiling gdk-pixbuf-sys v0.7.0
Sep 14 09:44:25.775 INFO kablam!    Compiling atk-sys v0.7.0
Sep 14 09:44:27.347 INFO kablam!    Compiling gdk-sys v0.7.0
Sep 14 09:44:27.362 INFO kablam!    Compiling gtk-sys v0.7.0
Sep 14 09:44:29.283 INFO kablam! error[E0635]: unknown feature `nested_impl_trait`
Sep 14 09:44:29.283 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/rxrs-0.1.0-alpha3/src/lib.rs:12:12
Sep 14 09:44:29.283 INFO kablam!    |
Sep 14 09:44:29.283 INFO kablam! 12 | #![feature(nested_impl_trait)]
Sep 14 09:44:29.283 INFO kablam!    |            ^^^^^^^^^^^^^^^^^
Sep 14 09:44:29.283 INFO kablam! 
Sep 14 09:44:29.626 INFO kablam! error: aborting due to previous error
Sep 14 09:44:29.626 INFO kablam! 
Sep 14 09:44:29.626 INFO kablam! For more information about this error, try `rustc --explain E0635`.
Sep 14 09:44:29.695 INFO kablam! error: Could not compile `rxrs`.
Sep 14 09:44:29.695 INFO kablam! warning: build failed, waiting for other jobs to finish...
Sep 14 09:44:30.830 INFO kablam! error: build failed
Sep 14 09:44:30.835 INFO kablam! su: No module specific data is present
Sep 14 09:44:31.923 INFO running `"docker" "rm" "-f" "c4a7b2e597f7e9f5c4a2ddcd876b651ba3d07df01ea17b8df4dab2682620538f"`
Sep 14 09:44:32.254 INFO blam! c4a7b2e597f7e9f5c4a2ddcd876b651ba3d07df01ea17b8df4dab2682620538f