Dec 11 23:04:02.365 INFO checking ajh/future_playground against try#aa9aa79c3c583aab59ac9134542d60a780c35e2e for pr-56677
Dec 11 23:04:02.366 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-6/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-56677/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/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 +aa9aa79c3c583aab59ac9134542d60a780c35e2e-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 11 23:04:02.940 INFO [stdout] 035a3fc6dbdc47eecf152d308592236fb9c4a5403723711c17d2968a75412462
Dec 11 23:04:02.946 INFO running `"docker" "start" "-a" "035a3fc6dbdc47eecf152d308592236fb9c4a5403723711c17d2968a75412462"`
Dec 11 23:04:04.293 INFO [stderr] usermod: no changes
Dec 11 23:04:04.437 INFO [stderr]     Checking futures v0.1.6
Dec 11 23:04:04.437 INFO [stderr]     Checking mio v0.6.1
Dec 11 23:04:07.380 INFO [stderr]     Checking futures-cpupool v0.1.2
Dec 11 23:04:07.408 INFO [stderr]     Checking tokio-core v0.1.1
Dec 11 23:04:09.348 INFO [stderr]     Checking tokiproto v0.1.0 (/source)
Dec 11 23:04:10.541 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.22s
Dec 11 23:04:10.555 INFO [stderr] su: No module specific data is present
Dec 11 23:04:11.218 INFO running `"docker" "inspect" "035a3fc6dbdc47eecf152d308592236fb9c4a5403723711c17d2968a75412462"`
Dec 11 23:04:11.583 INFO running `"docker" "rm" "-f" "035a3fc6dbdc47eecf152d308592236fb9c4a5403723711c17d2968a75412462"`
Dec 11 23:04:11.875 INFO [stdout] 035a3fc6dbdc47eecf152d308592236fb9c4a5403723711c17d2968a75412462