Sep 03 16:57:40.724 INFO checking onur/docs.rs against master#28bcffead74d5e17c6cb1f7de432e37f93a6b50c for pr-53893
Sep 03 16:57:40.724 INFO running: cargo +28bcffead74d5e17c6cb1f7de432e37f93a6b50c-alt check --frozen --all --all-targets
Sep 03 16:57:40.724 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-0/pr-53893/master#28bcffead74d5e17c6cb1f7de432e37f93a6b50c:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53893/worker-0/master#28bcffead74d5e17c6cb1f7de432e37f93a6b50c:/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=500" "-e" "CMD=cargo +28bcffead74d5e17c6cb1f7de432e37f93a6b50c-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 03 16:57:40.946 INFO blam! 004a5ef511df301a24a2b0fe1e960c0d69d785bb275b557780e1b6b8eedd430f
Sep 03 16:57:40.948 INFO running `"docker" "start" "-a" "004a5ef511df301a24a2b0fe1e960c0d69d785bb275b557780e1b6b8eedd430f"`
Sep 03 16:57:41.845 INFO kablam! error: failed to load source for a dependency on `cargo`
Sep 03 16:57:41.845 INFO kablam! 
Sep 03 16:57:41.845 INFO kablam! Caused by:
Sep 03 16:57:41.845 INFO kablam!   Unable to update https://github.com/onur/cargo.git?branch=docs.rs#a2996e83
Sep 03 16:57:41.845 INFO kablam! 
Sep 03 16:57:41.845 INFO kablam! Caused by:
Sep 03 16:57:41.845 INFO kablam!   failed to open: /cargo-home/git/.cargo-lock-git
Sep 03 16:57:41.845 INFO kablam! 
Sep 03 16:57:41.845 INFO kablam! Caused by:
Sep 03 16:57:41.845 INFO kablam!   Read-only file system (os error 30)
Sep 03 16:57:41.847 INFO kablam! su: No module specific data is present
Sep 03 16:57:42.322 INFO running `"docker" "rm" "-f" "004a5ef511df301a24a2b0fe1e960c0d69d785bb275b557780e1b6b8eedd430f"`
Sep 03 16:57:42.486 INFO blam! 004a5ef511df301a24a2b0fe1e960c0d69d785bb275b557780e1b6b8eedd430f