Sep 14 02:50:50.325 INFO checking shockham/contours against master#90d36fb5905bbe5004f5b465ea14b53d10dae260 for pr-53578-1
Sep 14 02:50:50.325 INFO running: cargo +90d36fb5905bbe5004f5b465ea14b53d10dae260-alt check --frozen --all --all-targets
Sep 14 02:50:50.325 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-6/pr-53578-1/master#90d36fb5905bbe5004f5b465ea14b53d10dae260:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53578-1/worker-6/master#90d36fb5905bbe5004f5b465ea14b53d10dae260:/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 +90d36fb5905bbe5004f5b465ea14b53d10dae260-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 14 02:50:50.762 INFO blam! 77ab0039a690cf8d62beeed007bee49420ecea795f85acb4f10fb2758aeffefb
Sep 14 02:50:50.767 INFO running `"docker" "start" "-a" "77ab0039a690cf8d62beeed007bee49420ecea795f85acb4f10fb2758aeffefb"`
Sep 14 02:50:52.982 INFO kablam! usermod: no changes
Sep 14 02:50:53.072 INFO kablam! error: failed to load source for a dependency on `caper`
Sep 14 02:50:53.072 INFO kablam! 
Sep 14 02:50:53.072 INFO kablam! Caused by:
Sep 14 02:50:53.072 INFO kablam!   Unable to update https://github.com/shockham/caper#6b103aa4
Sep 14 02:50:53.072 INFO kablam! 
Sep 14 02:50:53.072 INFO kablam! Caused by:
Sep 14 02:50:53.072 INFO kablam!   failed to open: /cargo-home/git/.cargo-lock-git
Sep 14 02:50:53.072 INFO kablam! 
Sep 14 02:50:53.072 INFO kablam! Caused by:
Sep 14 02:50:53.072 INFO kablam!   Read-only file system (os error 30)
Sep 14 02:50:53.079 INFO kablam! su: No module specific data is present
Sep 14 02:50:54.140 INFO running `"docker" "rm" "-f" "77ab0039a690cf8d62beeed007bee49420ecea795f85acb4f10fb2758aeffefb"`
Sep 14 02:50:54.443 INFO blam! 77ab0039a690cf8d62beeed007bee49420ecea795f85acb4f10fb2758aeffefb