Dec 05 04:25:31.305 INFO checking webdriver_client-0.2.2 against try#1df97983eb2057dc6a8f7eb364e263b51ae23230 for pr-56481
Dec 05 04:25:31.305 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-3/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-56481/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/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 +1df97983eb2057dc6a8f7eb364e263b51ae23230-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 05 04:25:31.762 INFO [stdout] e122264c68652784c26e668b779a3717e8145576e4cf866a648891b1a70ff3ad
Dec 05 04:25:31.764 INFO running `"docker" "start" "-a" "e122264c68652784c26e668b779a3717e8145576e4cf866a648891b1a70ff3ad"`
Dec 05 04:25:32.687 INFO [stderr] usermod: no changes
Dec 05 04:25:32.869 INFO [stderr]     Checking nix v0.5.1
Dec 05 04:25:32.869 INFO [stderr]     Checking hyper v0.10.15
Dec 05 04:25:32.869 INFO [stderr]     Checking stderrlog v0.2.4
Dec 05 04:25:32.869 INFO [stderr]     Checking env_logger v0.4.3
Dec 05 04:25:37.939 INFO [stderr]     Checking rustyline v1.0.0
Dec 05 04:25:39.243 INFO [stderr]     Checking webdriver_client v0.2.2 (/source)
Dec 05 04:25:52.687 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 19.97s
Dec 05 04:25:52.715 INFO [stderr] su: No module specific data is present
Dec 05 04:25:53.822 INFO running `"docker" "inspect" "e122264c68652784c26e668b779a3717e8145576e4cf866a648891b1a70ff3ad"`
Dec 05 04:25:54.091 INFO running `"docker" "rm" "-f" "e122264c68652784c26e668b779a3717e8145576e4cf866a648891b1a70ff3ad"`
Dec 05 04:25:54.362 INFO [stdout] e122264c68652784c26e668b779a3717e8145576e4cf866a648891b1a70ff3ad