Sep 21 06:40:30.400 INFO checking nccl-0.4.3 against try#f1a3f05968ed2a674e09b6efa4ad9df90816e2b6 for pr-54394
Sep 21 06:40:30.400 INFO running: cargo +f1a3f05968ed2a674e09b6efa4ad9df90816e2b6-alt check --frozen --all --all-targets
Sep 21 06:40:30.400 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-7/pr-54394/try#f1a3f05968ed2a674e09b6efa4ad9df90816e2b6:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54394/worker-7/try#f1a3f05968ed2a674e09b6efa4ad9df90816e2b6:/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 +f1a3f05968ed2a674e09b6efa4ad9df90816e2b6-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "1536M" "crater"`
Sep 21 06:40:30.724 INFO blam! 559212e3db0e73b0b8aa60d9671d1f39e1772d520c5c86fc395af32a83185852
Sep 21 06:40:30.726 INFO running `"docker" "start" "-a" "559212e3db0e73b0b8aa60d9671d1f39e1772d520c5c86fc395af32a83185852"`
Sep 21 06:40:31.798 INFO kablam! usermod: no changes
Sep 21 06:40:31.856 INFO kablam!     Checking nccl v0.4.3 (/source)
Sep 21 06:40:32.675 INFO kablam! warning: unused `#[macro_use]` import
Sep 21 06:40:32.675 INFO kablam!  --> tests/nccl.rs:2:1
Sep 21 06:40:32.675 INFO kablam!   |
Sep 21 06:40:32.675 INFO kablam! 2 | #[macro_use]
Sep 21 06:40:32.675 INFO kablam!   | ^^^^^^^^^^^^
Sep 21 06:40:32.675 INFO kablam!   |
Sep 21 06:40:32.675 INFO kablam!   = note: #[warn(unused_imports)] on by default
Sep 21 06:40:32.675 INFO kablam! 
Sep 21 06:40:32.829 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.99s
Sep 21 06:40:32.831 INFO kablam! su: No module specific data is present
Sep 21 06:40:33.789 INFO running `"docker" "rm" "-f" "559212e3db0e73b0b8aa60d9671d1f39e1772d520c5c86fc395af32a83185852"`
Sep 21 06:40:33.898 INFO blam! 559212e3db0e73b0b8aa60d9671d1f39e1772d520c5c86fc395af32a83185852