Dec 04 17:39:45.380 INFO checking hjr3/future-mpsc-example against master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc for pr-56481
Dec 04 17:39:45.380 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-0/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/pr-56481/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/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 +c8ae2de8363be088604ffa2ccba84ff7ad7250bc-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"`
Dec 04 17:39:45.562 INFO [stdout] 1332188cc8b20df8a60506b70d2fae6de7968459581928811b31fd7fa9a0402a
Dec 04 17:39:45.565 INFO running `"docker" "start" "-a" "1332188cc8b20df8a60506b70d2fae6de7968459581928811b31fd7fa9a0402a"`
Dec 04 17:39:46.058 INFO [stderr] usermod: no changes
Dec 04 17:39:46.129 INFO [stderr]     Checking net2 v0.2.26
Dec 04 17:39:46.129 INFO [stderr]     Checking futures v0.1.10
Dec 04 17:39:46.131 INFO [stderr]     Checking env_logger v0.4.1
Dec 04 17:39:46.735 INFO [stderr]     Checking mio v0.6.4
Dec 04 17:39:49.508 INFO [stderr]     Checking tokio-core v0.1.4
Dec 04 17:39:50.524 INFO [stderr]     Checking future-mpsc-example v0.1.0 (/source)
Dec 04 17:39:51.392 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.31s
Dec 04 17:39:51.400 INFO [stderr] su: No module specific data is present
Dec 04 17:39:51.991 INFO running `"docker" "inspect" "1332188cc8b20df8a60506b70d2fae6de7968459581928811b31fd7fa9a0402a"`
Dec 04 17:39:52.217 INFO running `"docker" "rm" "-f" "1332188cc8b20df8a60506b70d2fae6de7968459581928811b31fd7fa9a0402a"`
Dec 04 17:39:52.343 INFO [stdout] 1332188cc8b20df8a60506b70d2fae6de7968459581928811b31fd7fa9a0402a