Dec 01 16:10:40.208 INFO documenting erikjohnston/synapse-find-unreferenced-state-groups against master#147e60c5f89cfa2d3ffc247413956a37582c98e7 for pr-55318-1
Dec 01 16:10:40.208 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55318-1/worker-6/master#147e60c5f89cfa2d3ffc247413956a37582c98e7:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-55318-1/master#147e60c5f89cfa2d3ffc247413956a37582c98e7:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +147e60c5f89cfa2d3ffc247413956a37582c98e7-alt doc --frozen --no-deps --document-private-items" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 01 16:10:40.808 INFO [stdout] 460d9df7f9e711b9c4202ed6358492c360251a2fccf5b062c14df0d6fc79d6f5
Dec 01 16:10:40.810 INFO running `"docker" "start" "-a" "460d9df7f9e711b9c4202ed6358492c360251a2fccf5b062c14df0d6fc79d6f5"`
Dec 01 16:10:42.716 INFO [stderr] usermod: no changes
Dec 01 16:10:43.042 INFO [stderr]     Checking postgres-protocol v0.3.2
Dec 01 16:10:44.603 INFO [stderr]     Checking postgres-shared v0.4.2
Dec 01 16:10:46.594 INFO [stderr]     Checking postgres v0.15.2
Dec 01 16:10:48.497 INFO [stderr]  Documenting rust-synapse-find-unreferenced-state-groups v0.1.0 (/source)
Dec 01 16:10:52.783 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.04s
Dec 01 16:10:52.796 INFO [stderr] su: No module specific data is present
Dec 01 16:10:54.427 INFO running `"docker" "inspect" "460d9df7f9e711b9c4202ed6358492c360251a2fccf5b062c14df0d6fc79d6f5"`
Dec 01 16:10:54.752 INFO running `"docker" "rm" "-f" "460d9df7f9e711b9c4202ed6358492c360251a2fccf5b062c14df0d6fc79d6f5"`
Dec 01 16:10:55.110 INFO [stdout] 460d9df7f9e711b9c4202ed6358492c360251a2fccf5b062c14df0d6fc79d6f5