Dec 18 00:37:05.757 INFO checking erikjohnston/synapse-find-unreferenced-state-groups against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 18 00:37:05.757 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-2/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/gh/erikjohnston/synapse-find-unreferenced-state-groups:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 00:37:06.389 INFO [stdout] 76ca60c7f984fd05421c29f65112dae701b7f7ea222510cbbd844a9fe3773622
Dec 18 00:37:06.394 INFO running `"docker" "start" "-a" "76ca60c7f984fd05421c29f65112dae701b7f7ea222510cbbd844a9fe3773622"`
Dec 18 00:37:08.352 INFO [stderr]     Checking termios v0.3.0
Dec 18 00:37:08.352 INFO [stderr]     Checking socket2 v0.3.8
Dec 18 00:37:08.356 INFO [stderr]     Checking clicolors-control v0.2.0
Dec 18 00:37:08.356 INFO [stderr]     Checking sha2 v0.7.1
Dec 18 00:37:09.568 INFO [stderr]     Checking console v0.6.2
Dec 18 00:37:09.888 INFO [stderr]     Checking postgres-protocol v0.3.2
Dec 18 00:37:11.340 INFO [stderr]     Checking indicatif v0.9.0
Dec 18 00:37:12.315 INFO [stderr]     Checking postgres-shared v0.4.2
Dec 18 00:37:14.172 INFO [stderr]     Checking postgres v0.15.2
Dec 18 00:37:15.596 INFO [stderr]     Checking rust-synapse-find-unreferenced-state-groups v0.1.0 (/opt/crater/workdir)
Dec 18 00:37:16.740 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 00:37:16.740 INFO [stderr]    --> src/main.rs:252:17
Dec 18 00:37:16.740 INFO [stderr]     |
Dec 18 00:37:16.740 INFO [stderr] 252 |                 writeln!(fs, "{}", state_group);
Dec 18 00:37:16.740 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 00:37:16.740 INFO [stderr]     |
Dec 18 00:37:16.740 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 18 00:37:16.740 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 00:37:16.740 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 18 00:37:16.740 INFO [stderr] 
Dec 18 00:37:16.992 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 00:37:16.992 INFO [stderr]    --> src/main.rs:252:17
Dec 18 00:37:16.992 INFO [stderr]     |
Dec 18 00:37:16.992 INFO [stderr] 252 |                 writeln!(fs, "{}", state_group);
Dec 18 00:37:16.992 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 00:37:16.992 INFO [stderr]     |
Dec 18 00:37:16.992 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 18 00:37:16.992 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 00:37:16.992 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 18 00:37:16.992 INFO [stderr] 
Dec 18 00:37:17.025 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.94s
Dec 18 00:37:18.129 INFO running `"docker" "inspect" "76ca60c7f984fd05421c29f65112dae701b7f7ea222510cbbd844a9fe3773622"`
Dec 18 00:37:18.490 INFO running `"docker" "rm" "-f" "76ca60c7f984fd05421c29f65112dae701b7f7ea222510cbbd844a9fe3773622"`
Dec 18 00:37:18.844 INFO [stdout] 76ca60c7f984fd05421c29f65112dae701b7f7ea222510cbbd844a9fe3773622