Oct 12 15:47:44.839 INFO checking philippkeller/rexpect against try#4021bd0b3c5815b087d6db10ce461e7e4854ade7 for pr-54977
Oct 12 15:47:44.840 INFO running `"docker" "create" "-v" "/mnt/big/crater/./work/local/target-dirs/pr-54977/worker-2/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/target:rw,Z" "-v" "/mnt/big/crater/./work/local/test-source/worker-2/pr-54977/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/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 +4021bd0b3c5815b087d6db10ce461e7e4854ade7-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"`
Oct 12 15:47:45.417 INFO blam! f7b85406bcd649c9b0e33a9d1c20c9c214634786483f1c09f487801cf4fd516b
Oct 12 15:47:45.419 INFO running `"docker" "start" "-a" "f7b85406bcd649c9b0e33a9d1c20c9c214634786483f1c09f487801cf4fd516b"`
Oct 12 15:47:46.932 INFO kablam! usermod: no changes
Oct 12 15:47:47.056 INFO kablam!    Compiling backtrace-sys v0.1.14
Oct 12 15:47:47.056 INFO kablam!     Checking nix v0.9.0
Oct 12 15:47:47.058 INFO kablam!     Checking tempfile v2.1.6
Oct 12 15:47:47.058 INFO kablam!     Checking thread_local v0.3.4
Oct 12 15:47:48.276 INFO kablam!     Checking regex v0.2.2
Oct 12 15:48:05.988 INFO kablam!     Checking backtrace v0.3.3
Oct 12 15:48:06.528 INFO kablam!     Checking error-chain v0.11.0
Oct 12 15:48:07.176 INFO kablam!     Checking rexpect v0.3.0 (/source)
Oct 12 15:48:11.008 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 24.04s
Oct 12 15:48:11.013 INFO kablam! su: No module specific data is present
Oct 12 15:48:12.409 INFO running `"docker" "rm" "-f" "f7b85406bcd649c9b0e33a9d1c20c9c214634786483f1c09f487801cf4fd516b"`
Oct 12 15:48:12.662 INFO blam! f7b85406bcd649c9b0e33a9d1c20c9c214634786483f1c09f487801cf4fd516b