Dec 12 16:18:20.959 INFO checking cpu-monitor-0.1.1 against try#aa9aa79c3c583aab59ac9134542d60a780c35e2e for pr-56677
Dec 12 16:18:20.959 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 12 16:18:21.490 INFO [stdout] e6da053ef980864936baead0b3a23beeb7c6f1171cb9fd53d1f0241f4f59b9a9
Dec 12 16:18:21.496 INFO running `"docker" "start" "-a" "e6da053ef980864936baead0b3a23beeb7c6f1171cb9fd53d1f0241f4f59b9a9"`
Dec 12 16:18:22.680 INFO [stderr] usermod: no changes
Dec 12 16:18:22.836 INFO [stderr]     Checking linux_proc v0.1.0
Dec 12 16:18:22.850 INFO [stderr]     Checking cargo_metadata v0.6.3
Dec 12 16:18:23.804 INFO [stderr]     Checking cpu-monitor v0.1.1 (/source)
Dec 12 16:18:24.952 INFO [stderr]     Checking skeptic v0.13.4
Dec 12 16:18:27.832 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.14s
Dec 12 16:18:27.838 INFO [stderr] su: No module specific data is present
Dec 12 16:18:28.194 INFO running `"docker" "inspect" "e6da053ef980864936baead0b3a23beeb7c6f1171cb9fd53d1f0241f4f59b9a9"`
Dec 12 16:18:28.289 INFO running `"docker" "rm" "-f" "e6da053ef980864936baead0b3a23beeb7c6f1171cb9fd53d1f0241f4f59b9a9"`
Dec 12 16:18:28.360 INFO [stdout] e6da053ef980864936baead0b3a23beeb7c6f1171cb9fd53d1f0241f4f59b9a9