Dec 04 19:05:41.201 INFO checking erikjohnston/synapse-find-unreferenced-state-groups against master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc for pr-56481
Dec 04 19:05:41.201 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-4/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56481/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/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 +c8ae2de8363be088604ffa2ccba84ff7ad7250bc-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 04 19:05:41.663 INFO [stdout] 0bf3d73d85072ffb8d8a12c6f43d41ddfa9658d55a3699efdf1b9595d4c53092
Dec 04 19:05:41.665 INFO running `"docker" "start" "-a" "0bf3d73d85072ffb8d8a12c6f43d41ddfa9658d55a3699efdf1b9595d4c53092"`
Dec 04 19:05:43.076 INFO [stderr] usermod: no changes
Dec 04 19:05:43.395 INFO [stderr]     Checking postgres-protocol v0.3.2
Dec 04 19:05:43.407 INFO [stderr]     Checking console v0.6.2
Dec 04 19:05:46.060 INFO [stderr]     Checking postgres-shared v0.4.2
Dec 04 19:05:46.187 INFO [stderr]     Checking indicatif v0.9.0
Dec 04 19:05:49.496 INFO [stderr]     Checking postgres v0.15.2
Dec 04 19:05:51.479 INFO [stderr]     Checking rust-synapse-find-unreferenced-state-groups v0.1.0 (/source)
Dec 04 19:05:55.951 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 19:05:55.951 INFO [stderr]    --> src/main.rs:252:17
Dec 04 19:05:55.951 INFO [stderr]     |
Dec 04 19:05:55.951 INFO [stderr] 252 |                 writeln!(fs, "{}", state_group);
Dec 04 19:05:55.951 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 19:05:55.951 INFO [stderr]     |
Dec 04 19:05:55.951 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 04 19:05:55.951 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 19:05:55.951 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 04 19:05:55.951 INFO [stderr] 
Dec 04 19:05:56.155 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 19:05:56.155 INFO [stderr]    --> src/main.rs:252:17
Dec 04 19:05:56.155 INFO [stderr]     |
Dec 04 19:05:56.155 INFO [stderr] 252 |                 writeln!(fs, "{}", state_group);
Dec 04 19:05:56.155 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 19:05:56.155 INFO [stderr]     |
Dec 04 19:05:56.155 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 04 19:05:56.155 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 19:05:56.155 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 04 19:05:56.155 INFO [stderr] 
Dec 04 19:05:56.169 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.08s
Dec 04 19:05:56.195 INFO [stderr] su: No module specific data is present
Dec 04 19:05:57.379 INFO running `"docker" "inspect" "0bf3d73d85072ffb8d8a12c6f43d41ddfa9658d55a3699efdf1b9595d4c53092"`
Dec 04 19:05:57.693 INFO running `"docker" "rm" "-f" "0bf3d73d85072ffb8d8a12c6f43d41ddfa9658d55a3699efdf1b9595d4c53092"`
Dec 04 19:05:58.015 INFO [stdout] 0bf3d73d85072ffb8d8a12c6f43d41ddfa9658d55a3699efdf1b9595d4c53092