Oct 31 17:10:56.383 INFO checking zeratul2099/mercury against try#d7816399d50d407bbce1efe9dbadf8faaaf568fc for pr-55538
Oct 31 17:10:56.383 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55538/worker-5/try#d7816399d50d407bbce1efe9dbadf8faaaf568fc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/pr-55538/try#d7816399d50d407bbce1efe9dbadf8faaaf568fc:/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 +d7816399d50d407bbce1efe9dbadf8faaaf568fc-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 31 17:10:56.948 INFO blam! 4357186eaaeba576b50cbe4ae6ff075b61bf095d91a23f9b9eb367d672143ff6
Oct 31 17:10:56.952 INFO running `"docker" "start" "-a" "4357186eaaeba576b50cbe4ae6ff075b61bf095d91a23f9b9eb367d672143ff6"`
Oct 31 17:10:58.692 INFO kablam! usermod: no changes
Oct 31 17:10:58.788 INFO kablam! error: failed to load source for a dependency on `rocket`
Oct 31 17:10:58.788 INFO kablam! 
Oct 31 17:10:58.788 INFO kablam! Caused by:
Oct 31 17:10:58.788 INFO kablam!   Unable to update https://github.com/SergioBenitez/Rocket.git#8741e678
Oct 31 17:10:58.788 INFO kablam! 
Oct 31 17:10:58.788 INFO kablam! Caused by:
Oct 31 17:10:58.788 INFO kablam!   failed to open: /cargo-home/git/.cargo-lock-git
Oct 31 17:10:58.788 INFO kablam! 
Oct 31 17:10:58.788 INFO kablam! Caused by:
Oct 31 17:10:58.788 INFO kablam!   Read-only file system (os error 30)
Oct 31 17:10:58.788 INFO kablam! su: No module specific data is present
Oct 31 17:11:00.011 INFO running `"docker" "rm" "-f" "4357186eaaeba576b50cbe4ae6ff075b61bf095d91a23f9b9eb367d672143ff6"`
Oct 31 17:11:00.220 INFO blam! 4357186eaaeba576b50cbe4ae6ff075b61bf095d91a23f9b9eb367d672143ff6