Dec 11 16:21:45.921 INFO checking jimblandy/chat-mio against try#aa9aa79c3c583aab59ac9134542d60a780c35e2e for pr-56677
Dec 11 16:21:45.921 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-5/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/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 16:21:46.492 INFO [stdout] eccce59eaeb39ba40971b6f31f04a94a109f620f5140a4c72a474aaec101d9a7
Dec 11 16:21:46.494 INFO running `"docker" "start" "-a" "eccce59eaeb39ba40971b6f31f04a94a109f620f5140a4c72a474aaec101d9a7"`
Dec 11 16:21:48.363 INFO [stderr] usermod: no changes
Dec 11 16:21:48.516 INFO [stderr]     Checking net2 v0.2.26
Dec 11 16:21:49.295 INFO [stderr]     Checking mio v0.6.1
Dec 11 16:21:50.864 INFO [stderr]     Checking chat-mio v0.1.0 (/source)
Dec 11 16:21:52.369 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.96s
Dec 11 16:21:52.373 INFO [stderr] su: No module specific data is present
Dec 11 16:21:53.114 INFO running `"docker" "inspect" "eccce59eaeb39ba40971b6f31f04a94a109f620f5140a4c72a474aaec101d9a7"`
Dec 11 16:21:53.440 INFO running `"docker" "rm" "-f" "eccce59eaeb39ba40971b6f31f04a94a109f620f5140a4c72a474aaec101d9a7"`
Dec 11 16:21:53.755 INFO [stdout] eccce59eaeb39ba40971b6f31f04a94a109f620f5140a4c72a474aaec101d9a7