Nov 01 19:30:07.203 INFO checking nccl-0.4.3 against try#d7816399d50d407bbce1efe9dbadf8faaaf568fc for pr-55538
Nov 01 19:30:07.203 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55538/worker-7/try#d7816399d50d407bbce1efe9dbadf8faaaf568fc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-55538/try#d7816399d50d407bbce1efe9dbadf8faaaf568fc:/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 +d7816399d50d407bbce1efe9dbadf8faaaf568fc-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 19:30:07.564 INFO blam! 909e1c913c73d5b3285f88e6c0eda761a4fadb6ffe72d23a37c49e781bc51587
Nov 01 19:30:07.566 INFO running `"docker" "start" "-a" "909e1c913c73d5b3285f88e6c0eda761a4fadb6ffe72d23a37c49e781bc51587"`
Nov 01 19:30:09.311 INFO kablam! usermod: no changes
Nov 01 19:30:09.400 INFO kablam!     Checking nccl v0.4.3 (/source)
Nov 01 19:30:11.496 INFO kablam! warning: unused `#[macro_use]` import
Nov 01 19:30:11.496 INFO kablam!  --> tests/nccl.rs:2:1
Nov 01 19:30:11.497 INFO kablam!   |
Nov 01 19:30:11.497 INFO kablam! 2 | #[macro_use]
Nov 01 19:30:11.497 INFO kablam!   | ^^^^^^^^^^^^
Nov 01 19:30:11.497 INFO kablam!   |
Nov 01 19:30:11.497 INFO kablam!   = note: #[warn(unused_imports)] on by default
Nov 01 19:30:11.497 INFO kablam! 
Nov 01 19:30:11.678 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 2.33s
Nov 01 19:30:11.681 INFO kablam! su: No module specific data is present
Nov 01 19:30:12.021 INFO running `"docker" "rm" "-f" "909e1c913c73d5b3285f88e6c0eda761a4fadb6ffe72d23a37c49e781bc51587"`
Nov 01 19:30:12.157 INFO blam! 909e1c913c73d5b3285f88e6c0eda761a4fadb6ffe72d23a37c49e781bc51587