Dec 11 18:52:37.600 INFO checking erikjohnston/synapse-find-unreferenced-state-groups against try#aa9aa79c3c583aab59ac9134542d60a780c35e2e for pr-56677
Dec 11 18:52:37.600 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-3/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-56677/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/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 +aa9aa79c3c583aab59ac9134542d60a780c35e2e-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"`
Dec 11 18:52:38.172 INFO [stdout] 29efe389cd6c5368bc1e72ac524da6c4bceaecada58c2a394a82f18cfc91553d
Dec 11 18:52:38.178 INFO running `"docker" "start" "-a" "29efe389cd6c5368bc1e72ac524da6c4bceaecada58c2a394a82f18cfc91553d"`
Dec 11 18:52:39.374 INFO [stderr] usermod: no changes
Dec 11 18:52:39.676 INFO [stderr]     Checking socket2 v0.3.8
Dec 11 18:52:39.676 INFO [stderr]     Checking regex v0.2.11
Dec 11 18:52:39.676 INFO [stderr]     Checking postgres-protocol v0.3.2
Dec 11 18:52:39.676 INFO [stderr]     Checking console v0.6.2
Dec 11 18:52:44.794 INFO [stderr]     Checking postgres-shared v0.4.2
Dec 11 18:52:46.101 INFO [stderr]     Checking indicatif v0.9.0
Dec 11 18:52:49.025 INFO [stderr]     Checking postgres v0.15.2
Dec 11 18:52:51.155 INFO [stderr]     Checking rust-synapse-find-unreferenced-state-groups v0.1.0 (/source)
Dec 11 18:52:55.816 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 18:52:55.816 INFO [stderr]    --> src/main.rs:252:17
Dec 11 18:52:55.816 INFO [stderr]     |
Dec 11 18:52:55.816 INFO [stderr] 252 |                 writeln!(fs, "{}", state_group);
Dec 11 18:52:55.816 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 18:52:55.816 INFO [stderr]     |
Dec 11 18:52:55.816 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 11 18:52:55.816 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 18:52:55.816 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)
Dec 11 18:52:55.816 INFO [stderr] 
Dec 11 18:52:56.256 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 18:52:56.256 INFO [stderr]    --> src/main.rs:252:17
Dec 11 18:52:56.256 INFO [stderr]     |
Dec 11 18:52:56.256 INFO [stderr] 252 |                 writeln!(fs, "{}", state_group);
Dec 11 18:52:56.256 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 18:52:56.256 INFO [stderr]     |
Dec 11 18:52:56.256 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 11 18:52:56.256 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 18:52:56.256 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)
Dec 11 18:52:56.256 INFO [stderr] 
Dec 11 18:52:56.288 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.88s
Dec 11 18:52:56.300 INFO [stderr] su: No module specific data is present
Dec 11 18:52:57.424 INFO running `"docker" "inspect" "29efe389cd6c5368bc1e72ac524da6c4bceaecada58c2a394a82f18cfc91553d"`
Dec 11 18:52:57.772 INFO running `"docker" "rm" "-f" "29efe389cd6c5368bc1e72ac524da6c4bceaecada58c2a394a82f18cfc91553d"`
Dec 11 18:52:58.124 INFO [stdout] 29efe389cd6c5368bc1e72ac524da6c4bceaecada58c2a394a82f18cfc91553d