Nov 30 03:21:48.856 INFO checking erikjohnston/synapse-find-unreferenced-state-groups against try#32252761328f59ccfadb1bafb8148c685bc830b3 for pr-56323
Nov 30 03:21:48.857 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56323/worker-4/try#32252761328f59ccfadb1bafb8148c685bc830b3:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56323/try#32252761328f59ccfadb1bafb8148c685bc830b3:/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 +32252761328f59ccfadb1bafb8148c685bc830b3-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Nov 30 03:21:49.314 INFO [stdout] e3bd57b707dccbd10f3fd5bacb3e45cc41d9157442d88d4464ee06fd9f8c702b
Nov 30 03:21:49.324 INFO running `"docker" "start" "-a" "e3bd57b707dccbd10f3fd5bacb3e45cc41d9157442d88d4464ee06fd9f8c702b"`
Nov 30 03:21:50.968 INFO [stderr] usermod: no changes
Nov 30 03:21:51.259 INFO [stderr]     Checking termios v0.3.0
Nov 30 03:21:51.259 INFO [stderr]     Checking socket2 v0.3.8
Nov 30 03:21:51.259 INFO [stderr]     Checking regex v0.2.11
Nov 30 03:21:51.259 INFO [stderr]     Checking postgres-protocol v0.3.2
Nov 30 03:21:52.894 INFO [stderr]     Checking console v0.6.2
Nov 30 03:21:55.916 INFO [stderr]     Checking postgres-shared v0.4.2
Nov 30 03:21:58.322 INFO [stderr]     Checking indicatif v0.9.0
Nov 30 03:22:00.529 INFO [stderr]     Checking postgres v0.15.2
Nov 30 03:22:03.013 INFO [stderr]     Checking rust-synapse-find-unreferenced-state-groups v0.1.0 (/source)
Nov 30 03:22:07.280 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 30 03:22:07.280 INFO [stderr]    --> src/main.rs:252:17
Nov 30 03:22:07.280 INFO [stderr]     |
Nov 30 03:22:07.280 INFO [stderr] 252 |                 writeln!(fs, "{}", state_group);
Nov 30 03:22:07.280 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 30 03:22:07.280 INFO [stderr]     |
Nov 30 03:22:07.280 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Nov 30 03:22:07.280 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 30 03:22:07.280 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 30 03:22:07.280 INFO [stderr] 
Nov 30 03:22:07.586 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 30 03:22:07.586 INFO [stderr]    --> src/main.rs:252:17
Nov 30 03:22:07.586 INFO [stderr]     |
Nov 30 03:22:07.586 INFO [stderr] 252 |                 writeln!(fs, "{}", state_group);
Nov 30 03:22:07.586 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 30 03:22:07.586 INFO [stderr]     |
Nov 30 03:22:07.586 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Nov 30 03:22:07.586 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 30 03:22:07.586 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 30 03:22:07.586 INFO [stderr] 
Nov 30 03:22:07.601 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.57s
Nov 30 03:22:07.612 INFO [stderr] su: No module specific data is present
Nov 30 03:22:08.404 INFO running `"docker" "inspect" "e3bd57b707dccbd10f3fd5bacb3e45cc41d9157442d88d4464ee06fd9f8c702b"`
Nov 30 03:22:08.674 INFO running `"docker" "rm" "-f" "e3bd57b707dccbd10f3fd5bacb3e45cc41d9157442d88d4464ee06fd9f8c702b"`
Nov 30 03:22:08.969 INFO [stdout] e3bd57b707dccbd10f3fd5bacb3e45cc41d9157442d88d4464ee06fd9f8c702b