Sep 19 16:36:11.625 INFO checking tt-num-0.1.0 against master#ff6422d7a392acfc8af28994d65af2bbaecea4f6 for pr-54346
Sep 19 16:36:11.625 INFO running: cargo +ff6422d7a392acfc8af28994d65af2bbaecea4f6-alt check --frozen --all --all-targets
Sep 19 16:36:11.625 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-2/pr-54346/master#ff6422d7a392acfc8af28994d65af2bbaecea4f6:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54346/worker-2/master#ff6422d7a392acfc8af28994d65af2bbaecea4f6:/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 +ff6422d7a392acfc8af28994d65af2bbaecea4f6-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "1536M" "crater"`
Sep 19 16:36:12.015 INFO blam! 4cea7712e157341a155e84187549e15626ed107ea586736cfaa79b7b5df9183d
Sep 19 16:36:12.018 INFO running `"docker" "start" "-a" "4cea7712e157341a155e84187549e15626ed107ea586736cfaa79b7b5df9183d"`
Sep 19 16:36:13.436 INFO kablam! usermod: no changes
Sep 19 16:36:13.505 INFO kablam!     Checking tt-call v1.0.4
Sep 19 16:36:13.939 INFO kablam!     Checking tt-num v0.1.0 (/source)
Sep 19 16:36:14.726 INFO kablam! error[E0658]: access to extern crates through prelude is experimental (see issue #44660)
Sep 19 16:36:14.727 INFO kablam!  --> <tt_atoi macros>:2:1
Sep 19 16:36:14.727 INFO kablam!   |
Sep 19 16:36:14.727 INFO kablam! 2 | tt_call :: tt_return ! { $ caller input = [ { $ ( $ a ) * } ] } } ; {
Sep 19 16:36:14.727 INFO kablam!   | ^^^^^^^
Sep 19 16:36:14.727 INFO kablam!   |
Sep 19 16:36:14.727 INFO kablam!   = help: add #![feature(extern_prelude)] to the crate attributes to enable
Sep 19 16:36:14.727 INFO kablam! 
Sep 19 16:36:14.839 INFO kablam! error: aborting due to previous error
Sep 19 16:36:14.839 INFO kablam! 
Sep 19 16:36:14.839 INFO kablam! For more information about this error, try `rustc --explain E0658`.
Sep 19 16:36:14.852 INFO kablam! error: Could not compile `tt-num`.
Sep 19 16:36:14.852 INFO kablam! 
Sep 19 16:36:14.852 INFO kablam! To learn more, run the command again with --verbose.
Sep 19 16:36:14.852 INFO kablam! su: No module specific data is present
Sep 19 16:36:16.015 INFO running `"docker" "rm" "-f" "4cea7712e157341a155e84187549e15626ed107ea586736cfaa79b7b5df9183d"`
Sep 19 16:36:16.259 INFO blam! 4cea7712e157341a155e84187549e15626ed107ea586736cfaa79b7b5df9183d