Sep 10 20:40:38.739 INFO checking crust-0.28.1 against try#3a2610c2a16575649896925631bf8cec4f4b1961 for pr-54090
Sep 10 20:40:38.739 INFO running: cargo +3a2610c2a16575649896925631bf8cec4f4b1961-alt check --frozen --all --all-targets
Sep 10 20:40:38.739 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-3/pr-54090/try#3a2610c2a16575649896925631bf8cec4f4b1961:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54090/worker-3/try#3a2610c2a16575649896925631bf8cec4f4b1961:/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 +3a2610c2a16575649896925631bf8cec4f4b1961-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-m" "2G" "crater"`
Sep 10 20:40:38.920 INFO blam! 1a5d8f991b92e593332a29bfccf0a70b646e7da47023e8b88d15374dd8d21fc1
Sep 10 20:40:38.920 INFO running `"docker" "start" "-a" "1a5d8f991b92e593332a29bfccf0a70b646e7da47023e8b88d15374dd8d21fc1"`
Sep 10 20:40:39.737 INFO kablam! usermod: no changes
Sep 10 20:40:39.970 INFO kablam!     Checking c_linked_list v1.1.1
Sep 10 20:40:39.970 INFO kablam!     Checking tiny-keccak v1.3.1
Sep 10 20:40:39.974 INFO kablam!     Checking bytes v0.4.10
Sep 10 20:40:39.975 INFO kablam!     Checking textwrap v0.6.0
Sep 10 20:40:39.976 INFO kablam!     Checking url v1.5.1
Sep 10 20:40:39.976 INFO kablam!    Compiling miniz_oxide_c_api v0.1.3
Sep 10 20:40:39.977 INFO kablam!    Compiling bzip2 v0.3.3
Sep 10 20:40:39.977 INFO kablam!    Compiling flate2 v0.2.20
Sep 10 20:40:40.666 INFO kablam!     Checking bincode v0.8.0
Sep 10 20:40:40.986 INFO kablam!     Checking config_file_handler v0.8.3
Sep 10 20:40:41.828 INFO kablam!     Checking clap v2.25.1
Sep 10 20:40:44.547 INFO kablam!     Checking log4rs v0.7.0
Sep 10 20:40:44.691 INFO kablam!    Compiling flate2 v1.0.2
Sep 10 20:40:48.063 INFO kablam!     Checking ws v0.7.3
Sep 10 20:40:48.064 INFO kablam!     Checking hyper v0.10.13
Sep 10 20:40:48.794 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 10 20:40:48.794 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.7.0/src/append/file.rs:25:3
Sep 10 20:40:48.794 INFO kablam!    |
Sep 10 20:40:48.794 INFO kablam! 25 | #[serde(deny_unknown_fields)]
Sep 10 20:40:48.794 INFO kablam!    |   ^^^^^
Sep 10 20:40:48.794 INFO kablam!    |
Sep 10 20:40:48.794 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 10 20:40:48.794 INFO kablam! 
Sep 10 20:40:48.794 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 10 20:40:48.794 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.7.0/src/append/console.rs:24:3
Sep 10 20:40:48.794 INFO kablam!    |
Sep 10 20:40:48.794 INFO kablam! 24 | #[serde(deny_unknown_fields)]
Sep 10 20:40:48.794 INFO kablam!    |   ^^^^^
Sep 10 20:40:48.794 INFO kablam!    |
Sep 10 20:40:48.794 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 10 20:40:48.794 INFO kablam! 
Sep 10 20:40:48.794 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 10 20:40:48.794 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.7.0/src/append/rolling_file/policy/compound/roll/delete.rs:16:3
Sep 10 20:40:48.794 INFO kablam!    |
Sep 10 20:40:48.794 INFO kablam! 16 | #[serde(deny_unknown_fields)]
Sep 10 20:40:48.794 INFO kablam!    |   ^^^^^
Sep 10 20:40:48.794 INFO kablam!    |
Sep 10 20:40:48.794 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 10 20:40:48.794 INFO kablam! 
Sep 10 20:40:48.794 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 10 20:40:48.794 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.7.0/src/append/rolling_file/policy/compound/roll/fixed_window.rs:17:3
Sep 10 20:40:48.794 INFO kablam!    |
Sep 10 20:40:48.794 INFO kablam! 17 | #[serde(deny_unknown_fields)]
Sep 10 20:40:48.794 INFO kablam!    |   ^^^^^
Sep 10 20:40:48.794 INFO kablam!    |
Sep 10 20:40:48.794 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 10 20:40:48.794 INFO kablam! 
Sep 10 20:40:48.794 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 10 20:40:48.794 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.7.0/src/append/rolling_file/policy/compound/trigger/size.rs:21:3
Sep 10 20:40:48.794 INFO kablam!    |
Sep 10 20:40:48.794 INFO kablam! 21 | #[serde(deny_unknown_fields)]
Sep 10 20:40:48.794 INFO kablam!    |   ^^^^^
Sep 10 20:40:48.794 INFO kablam!    |
Sep 10 20:40:48.794 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 10 20:40:48.794 INFO kablam! 
Sep 10 20:40:48.794 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 10 20:40:48.795 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.7.0/src/append/rolling_file/policy/compound/mod.rs:24:3
Sep 10 20:40:48.795 INFO kablam!    |
Sep 10 20:40:48.795 INFO kablam! 24 | #[serde(deny_unknown_fields)]
Sep 10 20:40:48.795 INFO kablam!    |   ^^^^^
Sep 10 20:40:48.795 INFO kablam!    |
Sep 10 20:40:48.795 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 10 20:40:48.795 INFO kablam! 
Sep 10 20:40:48.795 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 10 20:40:48.795 INFO kablam!   --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/log4rs-0.7.0/src/append/rolling_file/mod.rs:46:3
Sep 10 20:40:48.795 INFO kablam!    |
Sep 10 20:40:48.795 INFO kablam! 46 | #[serde(deny_unknown_fields)]
Sep 10 20:40:48.795 INFO kablam!    |   ^^^^^
Sep 10 20:40:48.795 INFO kablam!    |
Sep 10 20:40:48.795 INFO kablam!    = help: add #![feature(custom_attribute)] to the crate attributes to enable
Sep 10 20:40:48.795 INFO kablam! 
Sep 10 20:40:48.938 INFO kablam! error: aborting due to 7 previous errors
Sep 10 20:40:48.938 INFO kablam! 
Sep 10 20:40:48.938 INFO kablam! For more information about this error, try `rustc --explain E0658`.
Sep 10 20:40:48.958 INFO kablam! error: Could not compile `log4rs`.
Sep 10 20:40:48.958 INFO kablam! warning: build failed, waiting for other jobs to finish...
Sep 10 20:40:57.344 INFO kablam! error: build failed
Sep 10 20:40:57.346 INFO kablam! su: No module specific data is present
Sep 10 20:40:58.404 INFO running `"docker" "rm" "-f" "1a5d8f991b92e593332a29bfccf0a70b646e7da47023e8b88d15374dd8d21fc1"`
Sep 10 20:40:58.516 INFO blam! 1a5d8f991b92e593332a29bfccf0a70b646e7da47023e8b88d15374dd8d21fc1