Nov 01 19:30:09.889 INFO checking nccl-0.4.3 against master#05812fa8c588473f03e3fa7cf59cd84f4f37c715 for pr-55538
Nov 01 19:30:09.889 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55538/worker-6/master#05812fa8c588473f03e3fa7cf59cd84f4f37c715:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-55538/master#05812fa8c588473f03e3fa7cf59cd84f4f37c715:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +05812fa8c588473f03e3fa7cf59cd84f4f37c715-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Nov 01 19:30:10.336 INFO blam! 810c3d6c8b8ba5bc854fd499197f70a2d75170f1eb8687ad2e7d176f70e54458
Nov 01 19:30:10.337 INFO running `"docker" "start" "-a" "810c3d6c8b8ba5bc854fd499197f70a2d75170f1eb8687ad2e7d176f70e54458"`
Nov 01 19:30:11.136 INFO kablam! usermod: no changes
Nov 01 19:30:11.169 INFO kablam!     Checking nccl v0.4.3 (/source)
Nov 01 19:30:12.696 INFO kablam! warning: unused `#[macro_use]` import
Nov 01 19:30:12.696 INFO kablam!  --> tests/nccl.rs:2:1
Nov 01 19:30:12.696 INFO kablam!   |
Nov 01 19:30:12.696 INFO kablam! 2 | #[macro_use]
Nov 01 19:30:12.696 INFO kablam!   | ^^^^^^^^^^^^
Nov 01 19:30:12.696 INFO kablam!   |
Nov 01 19:30:12.696 INFO kablam!   = note: #[warn(unused_imports)] on by default
Nov 01 19:30:12.696 INFO kablam! 
Nov 01 19:30:12.857 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 1.70s
Nov 01 19:30:12.865 INFO kablam! su: No module specific data is present
Nov 01 19:30:14.033 INFO running `"docker" "rm" "-f" "810c3d6c8b8ba5bc854fd499197f70a2d75170f1eb8687ad2e7d176f70e54458"`
Nov 01 19:30:14.408 INFO blam! 810c3d6c8b8ba5bc854fd499197f70a2d75170f1eb8687ad2e7d176f70e54458