Sep 21 05:36:16.825 INFO checking polish_notation-0.1.0 against master#f7f4c500b46603386e940f116b469c7adc043a6d for pr-54394
Sep 21 05:36:16.825 INFO running: cargo +f7f4c500b46603386e940f116b469c7adc043a6d-alt check --frozen --all --all-targets
Sep 21 05:36:16.825 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-2/pr-54394/master#f7f4c500b46603386e940f116b469c7adc043a6d:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54394/worker-2/master#f7f4c500b46603386e940f116b469c7adc043a6d:/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 +f7f4c500b46603386e940f116b469c7adc043a6d-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "1536M" "crater"`
Sep 21 05:36:17.022 INFO blam! 7aa5eb92fa9b1a8569705389a0b9959ce1087838177206a723f918729260593f
Sep 21 05:36:17.024 INFO running `"docker" "start" "-a" "7aa5eb92fa9b1a8569705389a0b9959ce1087838177206a723f918729260593f"`
Sep 21 05:36:17.605 INFO kablam! usermod: no changes
Sep 21 05:36:17.629 INFO kablam!     Checking polish_notation v0.1.0 (/source)
Sep 21 05:36:17.853 INFO kablam! error: recursion limit reached while expanding the macro `npn`
Sep 21 05:36:17.853 INFO kablam!   --> src/lib.rs:23:72
Sep 21 05:36:17.853 INFO kablam!    |
Sep 21 05:36:17.853 INFO kablam! 23 |     [($head:tt $($tail:tt)*) -> ($stack_head:tt + $($stack:tt)*)] => { npn!(($($tail)*) -> (($stack_head + $head) $($stack)*)) };
Sep 21 05:36:17.853 INFO kablam!    |                                                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 21 05:36:17.853 INFO kablam! ...
Sep 21 05:36:17.853 INFO kablam! 49 |         assert_eq!(npn!(+ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32), 528);
Sep 21 05:36:17.853 INFO kablam!    |                    ---------------------------------------------------------------------------------------------------------------------------------------------------------- in this macro invocation
Sep 21 05:36:17.853 INFO kablam!    |
Sep 21 05:36:17.853 INFO kablam!    = help: consider adding a `#![recursion_limit="128"]` attribute to your crate
Sep 21 05:36:17.853 INFO kablam! 
Sep 21 05:36:17.853 INFO kablam! error: aborting due to previous error
Sep 21 05:36:17.853 INFO kablam! 
Sep 21 05:36:17.859 INFO kablam! error: Could not compile `polish_notation`.
Sep 21 05:36:17.859 INFO kablam! 
Sep 21 05:36:17.859 INFO kablam! To learn more, run the command again with --verbose.
Sep 21 05:36:17.860 INFO kablam! su: No module specific data is present
Sep 21 05:36:18.346 INFO running `"docker" "rm" "-f" "7aa5eb92fa9b1a8569705389a0b9959ce1087838177206a723f918729260593f"`
Sep 21 05:36:18.485 INFO blam! 7aa5eb92fa9b1a8569705389a0b9959ce1087838177206a723f918729260593f