Sep 19 21:46:51.293 INFO checking rfcalcs-0.1.1 against master#1e21c9a297a9fe668d62887a3a6a4add8e717b17 for pr-54352
Sep 19 21:46:51.293 INFO running: cargo +1e21c9a297a9fe668d62887a3a6a4add8e717b17-alt check --frozen --all --all-targets
Sep 19 21:46:51.293 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-6/pr-54352/master#1e21c9a297a9fe668d62887a3a6a4add8e717b17:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54352/worker-6/master#1e21c9a297a9fe668d62887a3a6a4add8e717b17:/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 +1e21c9a297a9fe668d62887a3a6a4add8e717b17-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "1536M" "crater"`
Sep 19 21:46:51.543 INFO blam! dee47b2957ced5da1161abcb69f7c5d0a46960cb47994bf43cea9908d00ebe5d
Sep 19 21:46:51.545 INFO running `"docker" "start" "-a" "dee47b2957ced5da1161abcb69f7c5d0a46960cb47994bf43cea9908d00ebe5d"`
Sep 19 21:46:52.539 INFO kablam! usermod: no changes
Sep 19 21:46:52.609 INFO kablam!     Checking assert_approx_eq v1.0.0
Sep 19 21:46:52.825 INFO kablam!     Checking rfcalcs v0.1.1 (/source)
Sep 19 21:46:53.074 INFO kablam! warning: the feature `use_extern_macros` has been stable since 1.30.0 and no longer requires an attribute to enable
Sep 19 21:46:53.074 INFO kablam!  --> src/lib.rs:1:12
Sep 19 21:46:53.074 INFO kablam!   |
Sep 19 21:46:53.074 INFO kablam! 1 | #![feature(use_extern_macros)]
Sep 19 21:46:53.074 INFO kablam!   |            ^^^^^^^^^^^^^^^^^
Sep 19 21:46:53.074 INFO kablam!   |
Sep 19 21:46:53.074 INFO kablam!   = note: #[warn(stable_features)] on by default
Sep 19 21:46:53.074 INFO kablam! 
Sep 19 21:46:53.134 INFO kablam! error[E0658]: attributes on expressions are experimental. (see issue #15701)
Sep 19 21:46:53.134 INFO kablam!   --> src/lib.rs:33:9
Sep 19 21:46:53.134 INFO kablam!    |
Sep 19 21:46:53.134 INFO kablam! 33 |         /// Test against precalculated results
Sep 19 21:46:53.134 INFO kablam!    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 19 21:46:53.134 INFO kablam!    |
Sep 19 21:46:53.134 INFO kablam!    = help: add #![feature(stmt_expr_attributes)] to the crate attributes to enable
Sep 19 21:46:53.134 INFO kablam!    = help: `///` is for documentation comments. For a plain comment, use `//`.
Sep 19 21:46:53.134 INFO kablam! 
Sep 19 21:46:53.142 INFO kablam! error: aborting due to previous error
Sep 19 21:46:53.142 INFO kablam! 
Sep 19 21:46:53.142 INFO kablam! For more information about this error, try `rustc --explain E0658`.
Sep 19 21:46:53.148 INFO kablam! error: Could not compile `rfcalcs`.
Sep 19 21:46:53.148 INFO kablam! 
Sep 19 21:46:53.148 INFO kablam! To learn more, run the command again with --verbose.
Sep 19 21:46:53.148 INFO kablam! su: No module specific data is present
Sep 19 21:46:53.750 INFO running `"docker" "rm" "-f" "dee47b2957ced5da1161abcb69f7c5d0a46960cb47994bf43cea9908d00ebe5d"`
Sep 19 21:46:53.806 INFO blam! dee47b2957ced5da1161abcb69f7c5d0a46960cb47994bf43cea9908d00ebe5d