Sep 10 01:35:28.612 INFO checking zcash-hackworks/sapling-mpc against master#f50b7758f4dc85dc1c5e38258adaa94213ac6ed1 for pr-54090
Sep 10 01:35:28.612 INFO running: cargo +f50b7758f4dc85dc1c5e38258adaa94213ac6ed1-alt check --frozen --all --all-targets
Sep 10 01:35:28.612 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 01:35:28.842 INFO blam! 95d710af8569c0dd04523e81d493ae90df8c5562a050a1835bf208fc22b2b3b7
Sep 10 01:35:28.844 INFO running `"docker" "start" "-a" "95d710af8569c0dd04523e81d493ae90df8c5562a050a1835bf208fc22b2b3b7"`
Sep 10 01:35:30.563 INFO kablam! usermod: no changes
Sep 10 01:35:30.635 INFO kablam! error: failed to load source for a dependency on `sapling-crypto`
Sep 10 01:35:30.635 INFO kablam! 
Sep 10 01:35:30.635 INFO kablam! Caused by:
Sep 10 01:35:30.635 INFO kablam!   Unable to update https://github.com/zcash-hackworks/sapling-crypto?rev=eb409fa3cf8df215ae8d35f5e385751a0c5ffb85#eb409fa3
Sep 10 01:35:30.635 INFO kablam! 
Sep 10 01:35:30.635 INFO kablam! Caused by:
Sep 10 01:35:30.635 INFO kablam!   failed to open: /cargo-home/git/.cargo-lock-git
Sep 10 01:35:30.635 INFO kablam! 
Sep 10 01:35:30.635 INFO kablam! Caused by:
Sep 10 01:35:30.635 INFO kablam!   Read-only file system (os error 30)
Sep 10 01:35:30.642 INFO kablam! su: No module specific data is present
Sep 10 01:35:31.403 INFO running `"docker" "rm" "-f" "95d710af8569c0dd04523e81d493ae90df8c5562a050a1835bf208fc22b2b3b7"`
Sep 10 01:35:31.571 INFO blam! 95d710af8569c0dd04523e81d493ae90df8c5562a050a1835bf208fc22b2b3b7