Sep 06 00:26:45.238 INFO checking scavenger-1.0.0 against try#51ff957df5095d92d1d3d4682207ee8b7ad408a8 for pr-53854
Sep 06 00:26:45.238 INFO running: cargo +51ff957df5095d92d1d3d4682207ee8b7ad408a8-alt check --frozen --all --all-targets
Sep 06 00:26:45.238 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-6/pr-53854/try#51ff957df5095d92d1d3d4682207ee8b7ad408a8:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53854/worker-6/try#51ff957df5095d92d1d3d4682207ee8b7ad408a8:/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 +51ff957df5095d92d1d3d4682207ee8b7ad408a8-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 06 00:26:45.390 INFO blam! 1f04f1fd73a648a9a0ab21a7c30f7746281ca192c019e7360077e28acbc7a3a9
Sep 06 00:26:45.392 INFO running `"docker" "start" "-a" "1f04f1fd73a648a9a0ab21a7c30f7746281ca192c019e7360077e28acbc7a3a9"`
Sep 06 00:26:46.183 INFO kablam! usermod: no changes
Sep 06 00:26:46.404 INFO kablam!    Compiling ring v0.13.2
Sep 06 00:26:46.410 INFO kablam!    Compiling sys-info v0.5.6
Sep 06 00:26:46.410 INFO kablam!    Compiling scavenger v1.0.0 (file:///source)
Sep 06 00:26:46.427 INFO kablam!     Checking core_affinity v0.5.9
Sep 06 00:26:46.430 INFO kablam!     Checking clap v2.30.0
Sep 06 00:26:46.431 INFO kablam!     Checking log v0.4.5
Sep 06 00:26:46.432 INFO kablam!     Checking ordered-float v0.5.0
Sep 06 00:26:46.433 INFO kablam!     Checking stopwatch v0.0.7
Sep 06 00:26:48.505 INFO kablam!     Checking serde-value v0.5.2
Sep 06 00:26:48.795 INFO kablam!     Checking tokio-io v0.1.8
Sep 06 00:26:48.795 INFO kablam!     Checking mio v0.6.15
Sep 06 00:26:50.022 INFO kablam!     Checking tokio-threadpool v0.1.6
Sep 06 00:26:50.029 INFO kablam!     Checking want v0.0.6
Sep 06 00:26:51.692 INFO kablam!     Checking log4rs v0.8.0
Sep 06 00:26:54.134 INFO kablam!     Checking tokio-codec v0.1.0
Sep 06 00:26:54.134 INFO kablam!     Checking tokio-fs v0.1.3
Sep 06 00:26:54.134 INFO kablam!     Checking h2 v0.1.12
Sep 06 00:26:54.904 INFO kablam! error[E0658]: The attribute `serde` is currently unknown to the compiler and may have meaning added to it in the future (see issue #29642)
Sep 06 00:26:54.904 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.8.0/src/append/file.rs:25:3
Sep 06 00:26:54.904 INFO kablam!    |
Sep 06 00:26:54.904 INFO kablam! 25 | #[serde(deny_unknown_fields)]
Sep 06 00:26:54.904 INFO kablam!    |   ^^^^^
Sep 06 00:26:54.904 INFO kablam!    |
Sep 06 00:26:54.904 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 06 00:26:54.904 INFO kablam! 
Sep 06 00:26:54.904 INFO kablam! error[E0658]: The attribute `serde` is currently unknown to the compiler and may have meaning added to it in the future (see issue #29642)
Sep 06 00:26:54.904 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.8.0/src/append/console.rs:24:3
Sep 06 00:26:54.904 INFO kablam!    |
Sep 06 00:26:54.904 INFO kablam! 24 | #[serde(deny_unknown_fields)]
Sep 06 00:26:54.904 INFO kablam!    |   ^^^^^
Sep 06 00:26:54.905 INFO kablam!    |
Sep 06 00:26:54.905 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 06 00:26:54.905 INFO kablam! 
Sep 06 00:26:54.905 INFO kablam! error[E0658]: The attribute `serde` is currently unknown to the compiler and may have meaning added to it in the future (see issue #29642)
Sep 06 00:26:54.905 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.8.0/src/append/rolling_file/policy/compound/roll/delete.rs:16:3
Sep 06 00:26:54.905 INFO kablam!    |
Sep 06 00:26:54.905 INFO kablam! 16 | #[serde(deny_unknown_fields)]
Sep 06 00:26:54.905 INFO kablam!    |   ^^^^^
Sep 06 00:26:54.905 INFO kablam!    |
Sep 06 00:26:54.905 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 06 00:26:54.905 INFO kablam! 
Sep 06 00:26:54.905 INFO kablam! error[E0658]: The attribute `serde` is currently unknown to the compiler and may have meaning added to it in the future (see issue #29642)
Sep 06 00:26:54.905 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.8.0/src/append/rolling_file/policy/compound/roll/fixed_window.rs:17:3
Sep 06 00:26:54.905 INFO kablam!    |
Sep 06 00:26:54.905 INFO kablam! 17 | #[serde(deny_unknown_fields)]
Sep 06 00:26:54.905 INFO kablam!    |   ^^^^^
Sep 06 00:26:54.905 INFO kablam!    |
Sep 06 00:26:54.905 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 06 00:26:54.905 INFO kablam! 
Sep 06 00:26:54.905 INFO kablam! error[E0658]: The attribute `serde` is currently unknown to the compiler and may have meaning added to it in the future (see issue #29642)
Sep 06 00:26:54.905 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.8.0/src/append/rolling_file/policy/compound/trigger/size.rs:21:3
Sep 06 00:26:54.905 INFO kablam!    |
Sep 06 00:26:54.905 INFO kablam! 21 | #[serde(deny_unknown_fields)]
Sep 06 00:26:54.905 INFO kablam!    |   ^^^^^
Sep 06 00:26:54.905 INFO kablam!    |
Sep 06 00:26:54.905 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 06 00:26:54.905 INFO kablam! 
Sep 06 00:26:54.905 INFO kablam! error[E0658]: The attribute `serde` is currently unknown to the compiler and may have meaning added to it in the future (see issue #29642)
Sep 06 00:26:54.905 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.8.0/src/append/rolling_file/policy/compound/mod.rs:24:3
Sep 06 00:26:54.905 INFO kablam!    |
Sep 06 00:26:54.905 INFO kablam! 24 | #[serde(deny_unknown_fields)]
Sep 06 00:26:54.905 INFO kablam!    |   ^^^^^
Sep 06 00:26:54.905 INFO kablam!    |
Sep 06 00:26:54.905 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 06 00:26:54.905 INFO kablam! 
Sep 06 00:26:54.918 INFO kablam! error[E0658]: The attribute `serde` is currently unknown to the compiler and may have meaning added to it in the future (see issue #29642)
Sep 06 00:26:54.918 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.8.0/src/append/rolling_file/mod.rs:46:3
Sep 06 00:26:54.918 INFO kablam!    |
Sep 06 00:26:54.918 INFO kablam! 46 | #[serde(deny_unknown_fields)]
Sep 06 00:26:54.918 INFO kablam!    |   ^^^^^
Sep 06 00:26:54.918 INFO kablam!    |
Sep 06 00:26:54.918 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 06 00:26:54.918 INFO kablam! 
Sep 06 00:26:55.346 INFO kablam! error: aborting due to 7 previous errors
Sep 06 00:26:55.346 INFO kablam! 
Sep 06 00:26:55.346 INFO kablam! For more information about this error, try `rustc --explain E0658`.
Sep 06 00:26:55.394 INFO kablam! error: Could not compile `log4rs`.
Sep 06 00:26:55.394 INFO kablam! warning: build failed, waiting for other jobs to finish...
Sep 06 00:27:03.299 INFO kablam! error: build failed
Sep 06 00:27:03.306 INFO kablam! su: No module specific data is present
Sep 06 00:27:04.937 INFO running `"docker" "rm" "-f" "1f04f1fd73a648a9a0ab21a7c30f7746281ca192c019e7360077e28acbc7a3a9"`
Sep 06 00:27:05.056 INFO blam! 1f04f1fd73a648a9a0ab21a7c30f7746281ca192c019e7360077e28acbc7a3a9