Sep 05 17:21:30.439 INFO checking shockham/contours against master#1c2e17f4e3a2070a7f703f51e29c1c388ef703b6 for pr-53854
Sep 05 17:21:30.439 INFO running: cargo +1c2e17f4e3a2070a7f703f51e29c1c388ef703b6-alt check --frozen --all --all-targets
Sep 05 17:21:30.439 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-6/pr-53854/master#1c2e17f4e3a2070a7f703f51e29c1c388ef703b6:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53854/worker-6/master#1c2e17f4e3a2070a7f703f51e29c1c388ef703b6:/target:rw,Z" "-v" "/home/ec2-user/crater/./work/local/cargo-home:/cargo-home:ro,Z" "-v" "/home/ec2-user/crater/./work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "CMD=cargo +1c2e17f4e3a2070a7f703f51e29c1c388ef703b6-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 05 17:21:30.846 INFO blam! f823a86fa38e8ac888ac1106106f67a4201582c31e6350a3f7df40ef63b5d384
Sep 05 17:21:30.847 INFO running `"docker" "start" "-a" "f823a86fa38e8ac888ac1106106f67a4201582c31e6350a3f7df40ef63b5d384"`
Sep 05 17:21:33.017 INFO kablam! usermod: no changes
Sep 05 17:21:33.093 INFO kablam! error: failed to load source for a dependency on `caper`
Sep 05 17:21:33.093 INFO kablam! 
Sep 05 17:21:33.093 INFO kablam! Caused by:
Sep 05 17:21:33.093 INFO kablam!   Unable to update https://github.com/shockham/caper#361decf2
Sep 05 17:21:33.094 INFO kablam! 
Sep 05 17:21:33.094 INFO kablam! Caused by:
Sep 05 17:21:33.094 INFO kablam!   failed to open: /cargo-home/git/.cargo-lock-git
Sep 05 17:21:33.094 INFO kablam! 
Sep 05 17:21:33.094 INFO kablam! Caused by:
Sep 05 17:21:33.094 INFO kablam!   Read-only file system (os error 30)
Sep 05 17:21:33.094 INFO kablam! su: No module specific data is present
Sep 05 17:21:34.302 INFO running `"docker" "rm" "-f" "f823a86fa38e8ac888ac1106106f67a4201582c31e6350a3f7df40ef63b5d384"`
Sep 05 17:21:34.606 INFO blam! f823a86fa38e8ac888ac1106106f67a4201582c31e6350a3f7df40ef63b5d384