Dec 19 07:29:59.143 INFO checking tcsc/asyncho against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 07:29:59.143 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-2/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/tcsc/asyncho:/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" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 07:29:59.680 INFO [stdout] 8f91c00306fcf95dd209d5f27ab238868015d09df0906415ee167aed9de00cd9
Dec 19 07:29:59.686 INFO running `"docker" "start" "-a" "8f91c00306fcf95dd209d5f27ab238868015d09df0906415ee167aed9de00cd9"`
Dec 19 07:30:01.521 INFO [stderr]     Checking iovec v0.1.0
Dec 19 07:30:01.521 INFO [stderr]     Checking net2 v0.2.27
Dec 19 07:30:01.528 INFO [stderr]     Checking thread_local v0.3.3
Dec 19 07:30:02.166 INFO [stderr]     Checking bytes v0.4.2
Dec 19 07:30:02.420 INFO [stderr]     Checking regex v0.2.1
Dec 19 07:30:02.754 INFO [stderr]     Checking mio v0.6.6
Dec 19 07:30:04.340 INFO [stderr]     Checking tokio-io v0.1.1
Dec 19 07:30:06.572 INFO [stderr]     Checking tokio-core v0.1.6
Dec 19 07:30:07.530 INFO [stderr]     Checking env_logger v0.4.2
Dec 19 07:30:08.584 INFO [stderr]     Checking asyncho v0.1.0 (/opt/crater/workdir)
Dec 19 07:30:09.268 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 07:30:09.268 INFO [stderr]    --> src/service.rs:124:17
Dec 19 07:30:09.268 INFO [stderr]     |
Dec 19 07:30:09.268 INFO [stderr] 124 |                 self.spawn_connection(conn).map_err(erase);
Dec 19 07:30:09.268 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 07:30:09.268 INFO [stderr]     |
Dec 19 07:30:09.268 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 19 07:30:09.268 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 07:30:09.268 INFO [stderr] 
Dec 19 07:30:09.307 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 07:30:09.307 INFO [stderr]    --> src/service.rs:124:17
Dec 19 07:30:09.307 INFO [stderr]     |
Dec 19 07:30:09.307 INFO [stderr] 124 |                 self.spawn_connection(conn).map_err(erase);
Dec 19 07:30:09.307 INFO [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 07:30:09.307 INFO [stderr]     |
Dec 19 07:30:09.308 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 19 07:30:09.308 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 07:30:09.308 INFO [stderr] 
Dec 19 07:30:09.352 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.98s
Dec 19 07:30:10.337 INFO running `"docker" "inspect" "8f91c00306fcf95dd209d5f27ab238868015d09df0906415ee167aed9de00cd9"`
Dec 19 07:30:10.670 INFO running `"docker" "rm" "-f" "8f91c00306fcf95dd209d5f27ab238868015d09df0906415ee167aed9de00cd9"`
Dec 19 07:30:11.043 INFO [stdout] 8f91c00306fcf95dd209d5f27ab238868015d09df0906415ee167aed9de00cd9