Sep 19 18:38:31.876 INFO checking tt-num-0.1.0 against master#1e21c9a297a9fe668d62887a3a6a4add8e717b17 for pr-54352
Sep 19 18:38:31.876 INFO running: cargo +1e21c9a297a9fe668d62887a3a6a4add8e717b17-alt check --frozen --all --all-targets
Sep 19 18:38:31.876 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-1/pr-54352/master#1e21c9a297a9fe668d62887a3a6a4add8e717b17:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54352/worker-1/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 18:38:32.101 INFO blam! 3768b63796c8948a0c339f79a53eb8a8ea9eeb03fc564af74aab0bee9e6f3d93
Sep 19 18:38:32.101 INFO running `"docker" "start" "-a" "3768b63796c8948a0c339f79a53eb8a8ea9eeb03fc564af74aab0bee9e6f3d93"`
Sep 19 18:38:33.098 INFO kablam! usermod: no changes
Sep 19 18:38:33.181 INFO kablam!     Checking tt-call v1.0.4
Sep 19 18:38:33.436 INFO kablam!     Checking tt-num v0.1.0 (/source)
Sep 19 18:38:34.038 INFO kablam! error[E0658]: access to extern crates through prelude is experimental (see issue #44660)
Sep 19 18:38:34.038 INFO kablam!  --> <tt_atoi macros>:2:1
Sep 19 18:38:34.038 INFO kablam!   |
Sep 19 18:38:34.038 INFO kablam! 2 | tt_call :: tt_return ! { $ caller input = [ { $ ( $ a ) * } ] } } ; {
Sep 19 18:38:34.038 INFO kablam!   | ^^^^^^^
Sep 19 18:38:34.038 INFO kablam!   |
Sep 19 18:38:34.038 INFO kablam!   = help: add #![feature(extern_prelude)] to the crate attributes to enable
Sep 19 18:38:34.038 INFO kablam! 
Sep 19 18:38:34.138 INFO kablam! error: aborting due to previous error
Sep 19 18:38:34.138 INFO kablam! 
Sep 19 18:38:34.142 INFO kablam! For more information about this error, try `rustc --explain E0658`.
Sep 19 18:38:34.146 INFO kablam! error: Could not compile `tt-num`.
Sep 19 18:38:34.146 INFO kablam! 
Sep 19 18:38:34.146 INFO kablam! To learn more, run the command again with --verbose.
Sep 19 18:38:34.150 INFO kablam! su: No module specific data is present
Sep 19 18:38:35.712 INFO running `"docker" "rm" "-f" "3768b63796c8948a0c339f79a53eb8a8ea9eeb03fc564af74aab0bee9e6f3d93"`
Sep 19 18:38:35.820 INFO blam! 3768b63796c8948a0c339f79a53eb8a8ea9eeb03fc564af74aab0bee9e6f3d93