Dec 19 09:40:15.741 INFO checking rustomax/rust-iterators against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 09:40:15.741 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-1/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/rustomax/rust-iterators:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 09:40:16.326 INFO [stdout] ada2c32d2e35735d6d851cd5c799d7c08288b4a6c817a5183c26cbb34c67c160
Dec 19 09:40:16.334 INFO running `"docker" "start" "-a" "ada2c32d2e35735d6d851cd5c799d7c08288b4a6c817a5183c26cbb34c67c160"`
Dec 19 09:40:17.501 INFO [stderr]     Checking either v1.1.0
Dec 19 09:40:17.501 INFO [stderr]     Checking char-iter v0.1.0
Dec 19 09:40:17.803 INFO [stderr]     Checking itertools v0.6.0
Dec 19 09:40:19.402 INFO [stderr]     Checking iterators v0.1.0 (/opt/crater/workdir)
Dec 19 09:40:20.176 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.69s
Dec 19 09:40:20.850 INFO running `"docker" "inspect" "ada2c32d2e35735d6d851cd5c799d7c08288b4a6c817a5183c26cbb34c67c160"`
Dec 19 09:40:21.086 INFO running `"docker" "rm" "-f" "ada2c32d2e35735d6d851cd5c799d7c08288b4a6c817a5183c26cbb34c67c160"`
Dec 19 09:40:21.445 INFO [stdout] ada2c32d2e35735d6d851cd5c799d7c08288b4a6c817a5183c26cbb34c67c160