Aug 31 15:11:25.553 INFO checking rustfmt-nightly-0.99.4 against master#d0d81b7fc1421859ba0218e8a437af29ae3b0967 for pr-53578
Aug 31 15:11:25.553 INFO running: cargo +d0d81b7fc1421859ba0218e8a437af29ae3b0967-alt check --frozen --all --all-targets
Aug 31 15:11:25.553 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-1/pr-53578/master#d0d81b7fc1421859ba0218e8a437af29ae3b0967:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53578/worker-1/master#d0d81b7fc1421859ba0218e8a437af29ae3b0967:/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 +d0d81b7fc1421859ba0218e8a437af29ae3b0967-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Aug 31 15:11:25.779 INFO blam! 3a15cb240598e6425398a8c8363de0fbe8142b77df847deee5dec1c7caa51896
Aug 31 15:11:25.781 INFO running `"docker" "start" "-a" "3a15cb240598e6425398a8c8363de0fbe8142b77df847deee5dec1c7caa51896"`
Aug 31 15:11:26.800 INFO kablam!    Compiling rustfmt-nightly v0.99.4 (file:///source)
Aug 31 15:11:26.802 INFO kablam!     Checking rustc-hash v1.0.1
Aug 31 15:11:26.802 INFO kablam!     Checking rustc-ap-rustc_cratesio_shim v237.0.0
Aug 31 15:11:26.812 INFO kablam!    Compiling derive-new v0.5.5
Aug 31 15:11:26.816 INFO kablam!     Checking error-chain v0.12.0
Aug 31 15:11:26.820 INFO kablam!     Checking assert_cli v0.6.3
Aug 31 15:11:27.741 INFO kablam!     Checking rustc-ap-rustc_target v237.0.0
Aug 31 15:11:28.112 INFO kablam!     Checking rustc-ap-rustc_data_structures v237.0.0
Aug 31 15:11:29.315 INFO kablam!     Checking cargo_metadata v0.6.0
Aug 31 15:11:35.972 INFO kablam!     Checking rustc-ap-arena v237.0.0
Aug 31 15:11:37.380 INFO kablam!     Checking rustc-ap-syntax_pos v237.0.0
Aug 31 15:11:42.203 INFO kablam!     Checking rustc-ap-rustc_errors v237.0.0
Aug 31 15:11:46.838 INFO kablam!     Checking rustc-ap-syntax v237.0.0
Aug 31 15:12:11.743 INFO kablam! error[E0658]: tool attributes are unstable (see issue #44690)
Aug 31 15:12:11.743 INFO kablam!     --> src/comment.rs:1335:7
Aug 31 15:12:11.743 INFO kablam!      |
Aug 31 15:12:11.743 INFO kablam! 1335 |     #[rustfmt::skip]
Aug 31 15:12:11.743 INFO kablam!      |       ^^^^^^^^^^^^^
Aug 31 15:12:11.743 INFO kablam!      |
Aug 31 15:12:11.743 INFO kablam!      = help: add #![feature(tool_attributes)] to the crate attributes to enable
Aug 31 15:12:11.743 INFO kablam! 
Aug 31 15:12:12.843 INFO kablam! error[E0658]: tool attributes are unstable (see issue #44690)
Aug 31 15:12:12.843 INFO kablam!    --> src/lib.rs:595:11
Aug 31 15:12:12.843 INFO kablam!     |
Aug 31 15:12:12.844 INFO kablam! 595 |         #[rustfmt::skip]
Aug 31 15:12:12.844 INFO kablam!     |           ^^^^^^^^^^^^^
Aug 31 15:12:12.844 INFO kablam!     |
Aug 31 15:12:12.844 INFO kablam!     = help: add #![feature(tool_attributes)] to the crate attributes to enable
Aug 31 15:12:12.844 INFO kablam! 
Aug 31 15:12:12.957 INFO kablam! error: aborting due to 2 previous errors
Aug 31 15:12:12.957 INFO kablam! 
Aug 31 15:12:12.957 INFO kablam! For more information about this error, try `rustc --explain E0658`.
Aug 31 15:12:12.972 INFO kablam! error: Could not compile `rustfmt-nightly`.
Aug 31 15:12:12.972 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 31 15:12:26.410 INFO kablam! error: build failed
Aug 31 15:12:26.412 INFO kablam! su: No module specific data is present
Aug 31 15:12:26.808 INFO running `"docker" "rm" "-f" "3a15cb240598e6425398a8c8363de0fbe8142b77df847deee5dec1c7caa51896"`
Aug 31 15:12:26.933 INFO blam! 3a15cb240598e6425398a8c8363de0fbe8142b77df847deee5dec1c7caa51896