Sep 01 00:54:41.475 INFO checking AlexW-GH/rust8 against try#aa245a5862056b681d2ccdb178f58891108cd3a6 for pr-53831
Sep 01 00:54:41.475 INFO running: cargo +aa245a5862056b681d2ccdb178f58891108cd3a6-alt check --frozen --all --all-targets
Sep 01 00:54:41.475 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-1/pr-53831/try#aa245a5862056b681d2ccdb178f58891108cd3a6:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53831/worker-1/try#aa245a5862056b681d2ccdb178f58891108cd3a6:/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=500" "-e" "CMD=cargo +aa245a5862056b681d2ccdb178f58891108cd3a6-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 01 00:54:41.674 INFO blam! 34d5645c7cf92afe70efc3389fba987273423be4db74b14494411ed7af84a70c
Sep 01 00:54:41.676 INFO running `"docker" "start" "-a" "34d5645c7cf92afe70efc3389fba987273423be4db74b14494411ed7af84a70c"`
Sep 01 00:54:42.608 INFO kablam!    Compiling libc v0.2.21
Sep 01 00:54:42.609 INFO kablam!    Compiling serde v0.9.11
Sep 01 00:54:42.613 INFO kablam!     Checking shared_library v0.1.5
Sep 01 00:54:42.615 INFO kablam!    Compiling miniz-sys v0.1.9
Sep 01 00:54:42.617 INFO kablam!     Checking deflate v0.7.5
Sep 01 00:54:42.617 INFO kablam!     Checking humantime v1.0.0
Sep 01 00:54:42.618 INFO kablam!    Compiling gl_generator v0.5.2
Sep 01 00:54:42.618 INFO kablam!     Checking deque v0.3.1
Sep 01 00:54:43.832 INFO kablam!     Checking num-rational v0.1.36
Sep 01 00:54:44.026 INFO kablam!     Checking pistoncore-input v0.17.1
Sep 01 00:54:44.511 INFO kablam!     Checking ordered-float v0.4.0
Sep 01 00:54:44.838 INFO kablam!     Checking arrayvec v0.3.21
Sep 01 00:54:46.273 INFO kablam!     Checking osmesa-sys v0.1.2
Sep 01 00:54:47.203 INFO kablam!     Checking x11-dl v2.12.0
Sep 01 00:54:47.671 INFO kablam!     Checking rayon v0.6.0
Sep 01 00:54:48.682 INFO kablam!     Checking fs2 v0.2.5
Sep 01 00:54:49.706 INFO kablam!     Checking tempfile v2.1.5
Sep 01 00:54:52.225 INFO kablam!     Checking serde-value v0.4.0
Sep 01 00:54:52.366 INFO kablam!     Checking png v0.6.2
Sep 01 00:54:52.372 INFO kablam!    Compiling rand v0.3.15
Sep 01 00:54:52.493 INFO kablam!     Checking rusttype v0.2.1
Sep 01 00:54:55.099 INFO kablam!     Checking memmap v0.4.0
Sep 01 00:54:56.366 INFO kablam!    Compiling glutin v0.7.4
Sep 01 00:54:56.546 INFO kablam!    Compiling gl v0.6.1
Sep 01 00:54:59.185 INFO kablam!     Checking pistoncore-window v0.26.2
Sep 01 00:54:59.212 INFO kablam!     Checking flate2 v0.2.17
Sep 01 00:55:05.861 INFO kablam!     Checking jpeg-decoder v0.1.11
Sep 01 00:55:07.041 INFO kablam!     Checking pistoncore-event_loop v0.31.4
Sep 01 00:55:07.063 INFO kablam!     Checking log4rs v0.6.2
Sep 01 00:55:07.178 INFO kablam!    Compiling phf_generator v0.7.21
Sep 01 00:55:08.854 INFO kablam!    Compiling phf_codegen v0.7.21
Sep 01 00:55:08.969 INFO kablam!     Checking piston v0.31.4
Sep 01 00:55:09.185 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 01 00:55:09.185 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.6.2/src/append/file.rs:25:3
Sep 01 00:55:09.185 INFO kablam!    |
Sep 01 00:55:09.185 INFO kablam! 25 | #[serde(deny_unknown_fields)]
Sep 01 00:55:09.185 INFO kablam!    |   ^^^^^
Sep 01 00:55:09.185 INFO kablam!    |
Sep 01 00:55:09.185 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 01 00:55:09.185 INFO kablam! 
Sep 01 00:55:09.186 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 01 00:55:09.186 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.6.2/src/append/console.rs:24:3
Sep 01 00:55:09.186 INFO kablam!    |
Sep 01 00:55:09.186 INFO kablam! 24 | #[serde(deny_unknown_fields)]
Sep 01 00:55:09.186 INFO kablam!    |   ^^^^^
Sep 01 00:55:09.186 INFO kablam!    |
Sep 01 00:55:09.186 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 01 00:55:09.186 INFO kablam! 
Sep 01 00:55:09.186 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 01 00:55:09.186 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.6.2/src/append/rolling_file/policy/compound/roll/delete.rs:16:3
Sep 01 00:55:09.186 INFO kablam!    |
Sep 01 00:55:09.186 INFO kablam! 16 | #[serde(deny_unknown_fields)]
Sep 01 00:55:09.186 INFO kablam!    |   ^^^^^
Sep 01 00:55:09.186 INFO kablam!    |
Sep 01 00:55:09.186 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 01 00:55:09.186 INFO kablam! 
Sep 01 00:55:09.186 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 01 00:55:09.186 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.6.2/src/append/rolling_file/policy/compound/roll/fixed_window.rs:17:3
Sep 01 00:55:09.186 INFO kablam!    |
Sep 01 00:55:09.186 INFO kablam! 17 | #[serde(deny_unknown_fields)]
Sep 01 00:55:09.186 INFO kablam!    |   ^^^^^
Sep 01 00:55:09.186 INFO kablam!    |
Sep 01 00:55:09.186 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 01 00:55:09.187 INFO kablam! 
Sep 01 00:55:09.187 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 01 00:55:09.187 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.6.2/src/append/rolling_file/policy/compound/trigger/size.rs:21:3
Sep 01 00:55:09.187 INFO kablam!    |
Sep 01 00:55:09.187 INFO kablam! 21 | #[serde(deny_unknown_fields)]
Sep 01 00:55:09.187 INFO kablam!    |   ^^^^^
Sep 01 00:55:09.187 INFO kablam!    |
Sep 01 00:55:09.187 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 01 00:55:09.187 INFO kablam! 
Sep 01 00:55:09.187 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 01 00:55:09.187 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.6.2/src/append/rolling_file/policy/compound/mod.rs:24:3
Sep 01 00:55:09.187 INFO kablam!    |
Sep 01 00:55:09.187 INFO kablam! 24 | #[serde(deny_unknown_fields)]
Sep 01 00:55:09.187 INFO kablam!    |   ^^^^^
Sep 01 00:55:09.187 INFO kablam!    |
Sep 01 00:55:09.187 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 01 00:55:09.187 INFO kablam! 
Sep 01 00:55:09.188 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 01 00:55:09.188 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.6.2/src/append/rolling_file/mod.rs:46:3
Sep 01 00:55:09.188 INFO kablam!    |
Sep 01 00:55:09.189 INFO kablam! 46 | #[serde(deny_unknown_fields)]
Sep 01 00:55:09.189 INFO kablam!    |   ^^^^^
Sep 01 00:55:09.189 INFO kablam!    |
Sep 01 00:55:09.189 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 01 00:55:09.189 INFO kablam! 
Sep 01 00:55:09.403 INFO kablam! error: aborting due to 7 previous errors
Sep 01 00:55:09.403 INFO kablam! 
Sep 01 00:55:09.403 INFO kablam! For more information about this error, try `rustc --explain E0658`.
Sep 01 00:55:09.427 INFO kablam! error: Could not compile `log4rs`.
Sep 01 00:55:09.428 INFO kablam! warning: build failed, waiting for other jobs to finish...
Sep 01 00:55:19.212 INFO kablam! error: build failed
Sep 01 00:55:19.213 INFO kablam! su: No module specific data is present
Sep 01 00:55:19.610 INFO running `"docker" "rm" "-f" "34d5645c7cf92afe70efc3389fba987273423be4db74b14494411ed7af84a70c"`
Sep 01 00:55:19.697 INFO blam! 34d5645c7cf92afe70efc3389fba987273423be4db74b14494411ed7af84a70c