Sep 10 03:51:00.948 INFO checking jsnewby/rust_epoch against master#f50b7758f4dc85dc1c5e38258adaa94213ac6ed1 for pr-54090
Sep 10 03:51:00.948 INFO running: cargo +f50b7758f4dc85dc1c5e38258adaa94213ac6ed1-alt check --frozen --all --all-targets
Sep 10 03:51:00.948 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-6/pr-54090/master#f50b7758f4dc85dc1c5e38258adaa94213ac6ed1:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54090/worker-6/master#f50b7758f4dc85dc1c5e38258adaa94213ac6ed1:/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 +f50b7758f4dc85dc1c5e38258adaa94213ac6ed1-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-m" "2G" "crater"`
Sep 10 03:51:01.198 INFO blam! afeda886072671f8fecc3d8f503e4f6fc13cd6a1bf1ac864f9835d81a44c7490
Sep 10 03:51:01.200 INFO running `"docker" "start" "-a" "afeda886072671f8fecc3d8f503e4f6fc13cd6a1bf1ac864f9835d81a44c7490"`
Sep 10 03:51:02.281 INFO kablam! usermod: no changes
Sep 10 03:51:02.397 INFO kablam! error: failed to load source for a dependency on `serde-xml-rs`
Sep 10 03:51:02.397 INFO kablam! 
Sep 10 03:51:02.397 INFO kablam! Caused by:
Sep 10 03:51:02.397 INFO kablam!   Unable to update git://github.com/Metaswitch/serde-xml-rs.git#a5a87992
Sep 10 03:51:02.397 INFO kablam! 
Sep 10 03:51:02.397 INFO kablam! Caused by:
Sep 10 03:51:02.397 INFO kablam!   failed to open: /cargo-home/git/.cargo-lock-git
Sep 10 03:51:02.398 INFO kablam! 
Sep 10 03:51:02.398 INFO kablam! Caused by:
Sep 10 03:51:02.398 INFO kablam!   Read-only file system (os error 30)
Sep 10 03:51:02.399 INFO kablam! su: No module specific data is present
Sep 10 03:51:03.432 INFO running `"docker" "rm" "-f" "afeda886072671f8fecc3d8f503e4f6fc13cd6a1bf1ac864f9835d81a44c7490"`
Sep 10 03:51:03.542 INFO blam! afeda886072671f8fecc3d8f503e4f6fc13cd6a1bf1ac864f9835d81a44c7490