Dec 11 20:31:22.893 INFO checking cowang4/rusty_tree against try#aa9aa79c3c583aab59ac9134542d60a780c35e2e for pr-56677
Dec 11 20:31:22.893 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 20:31:23.524 INFO [stdout] 2856f955c04e4fc17d99720c81134307b24b596e80fba4f80ac0a042f43ce594
Dec 11 20:31:23.528 INFO running `"docker" "start" "-a" "2856f955c04e4fc17d99720c81134307b24b596e80fba4f80ac0a042f43ce594"`
Dec 11 20:31:24.689 INFO [stderr] usermod: no changes
Dec 11 20:31:24.805 INFO [stderr]    Compiling serde v1.0.57
Dec 11 20:31:24.809 INFO [stderr]    Compiling serde_derive v1.0.57
Dec 11 20:31:44.575 INFO [stderr]     Checking docopt v1.0.0
Dec 11 20:31:46.363 INFO [stderr]     Checking rusty_tree v0.1.0 (/source)
Dec 11 20:31:49.637 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 24.92s
Dec 11 20:31:49.648 INFO [stderr] su: No module specific data is present
Dec 11 20:31:51.079 INFO running `"docker" "inspect" "2856f955c04e4fc17d99720c81134307b24b596e80fba4f80ac0a042f43ce594"`
Dec 11 20:31:51.396 INFO running `"docker" "rm" "-f" "2856f955c04e4fc17d99720c81134307b24b596e80fba4f80ac0a042f43ce594"`
Dec 11 20:31:51.720 INFO [stdout] 2856f955c04e4fc17d99720c81134307b24b596e80fba4f80ac0a042f43ce594