Dec 04 14:52:31.336 INFO checking luotaoyeah/learning-rust against master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc for pr-56481
Dec 04 14:52:31.336 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-3/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/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 14:52:31.904 INFO [stdout] 803a18b1f835a0cf6d4534ce7bcf9b3175edf6e9cae1c7c10d6b4dfc5f25de23
Dec 04 14:52:31.906 INFO running `"docker" "start" "-a" "803a18b1f835a0cf6d4534ce7bcf9b3175edf6e9cae1c7c10d6b4dfc5f25de23"`
Dec 04 14:52:33.603 INFO [stderr] usermod: no changes
Dec 04 14:52:33.642 INFO [stderr]     Checking rand_core v0.3.0
Dec 04 14:52:33.642 INFO [stderr]     Checking libc v0.2.43
Dec 04 14:52:34.556 INFO [stderr]     Checking rand_core v0.2.2
Dec 04 14:52:35.271 INFO [stderr]     Checking rand v0.5.5
Dec 04 14:52:37.517 INFO [stderr]     Checking learning-rust v0.1.0 (/source)
Dec 04 14:52:37.791 INFO [stderr]     Finished dev [optimized + debuginfo] target(s) in 4.17s
Dec 04 14:52:37.794 INFO [stderr] su: No module specific data is present
Dec 04 14:52:38.069 INFO running `"docker" "inspect" "803a18b1f835a0cf6d4534ce7bcf9b3175edf6e9cae1c7c10d6b4dfc5f25de23"`
Dec 04 14:52:38.206 INFO running `"docker" "rm" "-f" "803a18b1f835a0cf6d4534ce7bcf9b3175edf6e9cae1c7c10d6b4dfc5f25de23"`
Dec 04 14:52:38.449 INFO [stdout] 803a18b1f835a0cf6d4534ce7bcf9b3175edf6e9cae1c7c10d6b4dfc5f25de23