Dec 17 19:00:44.097 INFO checking nakakura/tokio-blocking against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 17 19:00:44.098 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-0/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/gh/nakakura/tokio-blocking:/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" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 17 19:00:44.582 INFO [stdout] e7986c8053c3b100fb5d31a81e3229284ff664b35cf20aa6bba96ea92748a506
Dec 17 19:00:44.588 INFO running `"docker" "start" "-a" "e7986c8053c3b100fb5d31a81e3229284ff664b35cf20aa6bba96ea92748a506"`
Dec 17 19:00:45.664 INFO [stderr]     Checking net2 v0.2.33
Dec 17 19:00:45.671 INFO [stderr]     Checking tokio-io v0.1.7
Dec 17 19:00:45.671 INFO [stderr]     Checking crossbeam-epoch v0.4.3
Dec 17 19:00:45.671 INFO [stderr]     Checking chrono v0.4.5
Dec 17 19:00:46.527 INFO [stderr]     Checking crossbeam-deque v0.3.1
Dec 17 19:00:46.664 INFO [stderr]     Checking mio v0.6.15
Dec 17 19:00:46.992 INFO [stderr]     Checking tokio-threadpool v0.1.5
Dec 17 19:00:47.420 INFO [stderr]     Checking tokio-codec v0.1.0
Dec 17 19:00:48.472 INFO [stderr]     Checking tokio-fs v0.1.3
Dec 17 19:00:48.880 INFO [stderr]     Checking tokio-reactor v0.1.3
Dec 17 19:00:49.930 INFO [stderr]     Checking tokio-tcp v0.1.1
Dec 17 19:00:49.930 INFO [stderr]     Checking tokio-udp v0.1.1
Dec 17 19:00:50.576 INFO [stderr]     Checking tokio v0.1.7
Dec 17 19:00:51.510 INFO [stderr]     Checking wit v0.1.0 (/opt/crater/workdir)
Dec 17 19:00:51.916 INFO [stderr] warning: unused imports: `err`, `ok`
Dec 17 19:00:51.916 INFO [stderr]  --> src/main.rs:7:23
Dec 17 19:00:51.916 INFO [stderr]   |
Dec 17 19:00:51.916 INFO [stderr] 7 | use futures::future::{err, ok};
Dec 17 19:00:51.916 INFO [stderr]   |                       ^^^  ^^
Dec 17 19:00:51.916 INFO [stderr]   |
Dec 17 19:00:51.916 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 17 19:00:51.916 INFO [stderr] 
Dec 17 19:00:51.944 INFO [stderr] warning: unused imports: `err`, `ok`
Dec 17 19:00:51.944 INFO [stderr]  --> src/main.rs:7:23
Dec 17 19:00:51.944 INFO [stderr]   |
Dec 17 19:00:51.944 INFO [stderr] 7 | use futures::future::{err, ok};
Dec 17 19:00:51.944 INFO [stderr]   |                       ^^^  ^^
Dec 17 19:00:51.944 INFO [stderr]   |
Dec 17 19:00:51.944 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 17 19:00:51.944 INFO [stderr] 
Dec 17 19:00:51.984 INFO [stderr] warning: field is never used: `running`
Dec 17 19:00:51.984 INFO [stderr]   --> src/main.rs:17:5
Dec 17 19:00:51.984 INFO [stderr]    |
Dec 17 19:00:51.984 INFO [stderr] 17 |     running: bool,
Dec 17 19:00:51.984 INFO [stderr]    |     ^^^^^^^^^^^^^
Dec 17 19:00:51.984 INFO [stderr]    |
Dec 17 19:00:51.984 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 17 19:00:51.984 INFO [stderr] 
Dec 17 19:00:51.992 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 19:00:51.992 INFO [stderr]   --> src/main.rs:35:9
Dec 17 19:00:51.992 INFO [stderr]    |
Dec 17 19:00:51.992 INFO [stderr] 35 | /         blocking(|| {
Dec 17 19:00:51.992 INFO [stderr] 36 | |             println!("start {}, now: {:?}, end_time: {:?}", self.token, Utc::now(), self.end_time);
Dec 17 19:00:51.992 INFO [stderr] 37 | |             while Utc::now() < self.end_time {
Dec 17 19:00:51.992 INFO [stderr] 38 | |                 let delta_sec = self.end_time.timestamp() - Utc::now().timestamp();
Dec 17 19:00:51.992 INFO [stderr] ...  |
Dec 17 19:00:51.992 INFO [stderr] 43 | |             }
Dec 17 19:00:51.992 INFO [stderr] 44 | |         });
Dec 17 19:00:51.992 INFO [stderr]    | |___________^
Dec 17 19:00:51.992 INFO [stderr]    |
Dec 17 19:00:51.992 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 17 19:00:51.992 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 19:00:51.992 INFO [stderr] 
Dec 17 19:00:52.052 INFO [stderr] warning: field is never used: `running`
Dec 17 19:00:52.052 INFO [stderr]   --> src/main.rs:17:5
Dec 17 19:00:52.052 INFO [stderr]    |
Dec 17 19:00:52.052 INFO [stderr] 17 |     running: bool,
Dec 17 19:00:52.052 INFO [stderr]    |     ^^^^^^^^^^^^^
Dec 17 19:00:52.053 INFO [stderr]    |
Dec 17 19:00:52.053 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 17 19:00:52.053 INFO [stderr] 
Dec 17 19:00:52.076 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 19:00:52.077 INFO [stderr]   --> src/main.rs:35:9
Dec 17 19:00:52.077 INFO [stderr]    |
Dec 17 19:00:52.077 INFO [stderr] 35 | /         blocking(|| {
Dec 17 19:00:52.077 INFO [stderr] 36 | |             println!("start {}, now: {:?}, end_time: {:?}", self.token, Utc::now(), self.end_time);
Dec 17 19:00:52.077 INFO [stderr] 37 | |             while Utc::now() < self.end_time {
Dec 17 19:00:52.077 INFO [stderr] 38 | |                 let delta_sec = self.end_time.timestamp() - Utc::now().timestamp();
Dec 17 19:00:52.077 INFO [stderr] ...  |
Dec 17 19:00:52.077 INFO [stderr] 43 | |             }
Dec 17 19:00:52.077 INFO [stderr] 44 | |         });
Dec 17 19:00:52.077 INFO [stderr]    | |___________^
Dec 17 19:00:52.077 INFO [stderr]    |
Dec 17 19:00:52.077 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 17 19:00:52.077 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 19:00:52.077 INFO [stderr] 
Dec 17 19:00:52.102 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.51s
Dec 17 19:00:53.010 INFO running `"docker" "inspect" "e7986c8053c3b100fb5d31a81e3229284ff664b35cf20aa6bba96ea92748a506"`
Dec 17 19:00:53.300 INFO running `"docker" "rm" "-f" "e7986c8053c3b100fb5d31a81e3229284ff664b35cf20aa6bba96ea92748a506"`
Dec 17 19:00:53.560 INFO [stdout] e7986c8053c3b100fb5d31a81e3229284ff664b35cf20aa6bba96ea92748a506