Dec 17 19:57:41.894 INFO checking matthiasbeyer/task-rain against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 17 19:57:41.894 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-3/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/gh/matthiasbeyer/task-rain:/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 19:57:42.424 INFO [stdout] 8dd4542c6bffc21dbee849c9d0554b6e748a05745bca59963ffdd15f1b57b144
Dec 17 19:57:42.430 INFO running `"docker" "start" "-a" "8dd4542c6bffc21dbee849c9d0554b6e748a05745bca59963ffdd15f1b57b144"`
Dec 17 19:57:43.171 INFO [stderr]     Checking itoa v0.3.3
Dec 17 19:57:43.171 INFO [stderr]    Compiling backtrace-sys v0.1.12
Dec 17 19:57:43.171 INFO [stderr]     Checking time v0.1.38
Dec 17 19:57:43.171 INFO [stderr]     Checking termion v1.5.1
Dec 17 19:57:43.172 INFO [stderr]     Checking uuid v0.4.0
Dec 17 19:57:43.172 INFO [stderr]     Checking itertools v0.6.2
Dec 17 19:57:43.750 INFO [stderr]     Checking serde_json v0.9.10
Dec 17 19:57:44.139 INFO [stderr]     Checking chrono v0.2.25
Dec 17 19:57:47.548 INFO [stderr]     Checking task-hookrs v0.3.0
Dec 17 19:57:58.783 INFO [stderr]     Checking backtrace v0.3.3
Dec 17 19:57:59.250 INFO [stderr]     Checking error-chain v0.11.0
Dec 17 19:57:59.784 INFO [stderr]     Checking mowl v1.2.0
Dec 17 19:58:00.176 INFO [stderr]     Checking rain v0.3.1
Dec 17 19:58:00.612 INFO [stderr]     Checking task-graph v0.1.0 (/opt/crater/workdir)
Dec 17 19:58:02.094 INFO [stderr] warning: unused variable: `time`
Dec 17 19:58:02.094 INFO [stderr]   --> src/main.rs:42:10
Dec 17 19:58:02.094 INFO [stderr]    |
Dec 17 19:58:02.094 INFO [stderr] 42 |     for (time, group) in tasks.into_iter() {
Dec 17 19:58:02.094 INFO [stderr]    |          ^^^^ help: consider using `_time` instead
Dec 17 19:58:02.095 INFO [stderr]    |
Dec 17 19:58:02.095 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 17 19:58:02.095 INFO [stderr] 
Dec 17 19:58:02.099 INFO [stderr] warning: unused variable: `time`
Dec 17 19:58:02.099 INFO [stderr]   --> src/main.rs:42:10
Dec 17 19:58:02.099 INFO [stderr]    |
Dec 17 19:58:02.100 INFO [stderr] 42 |     for (time, group) in tasks.into_iter() {
Dec 17 19:58:02.100 INFO [stderr]    |          ^^^^ help: consider using `_time` instead
Dec 17 19:58:02.100 INFO [stderr]    |
Dec 17 19:58:02.100 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 17 19:58:02.100 INFO [stderr] 
Dec 17 19:58:02.106 INFO [stderr] warning: variable does not need to be mutable
Dec 17 19:58:02.106 INFO [stderr]   --> src/main.rs:27:17
Dec 17 19:58:02.106 INFO [stderr]    |
Dec 17 19:58:02.106 INFO [stderr] 27 |             let mut file = File::open(filename).expect("Couldn't open file");
Dec 17 19:58:02.106 INFO [stderr]    |                 ----^^^^
Dec 17 19:58:02.106 INFO [stderr]    |                 |
Dec 17 19:58:02.106 INFO [stderr]    |                 help: remove this `mut`
Dec 17 19:58:02.106 INFO [stderr]    |
Dec 17 19:58:02.106 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 17 19:58:02.106 INFO [stderr] 
Dec 17 19:58:02.106 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 19:58:02.106 INFO [stderr]   --> src/main.rs:48:5
Dec 17 19:58:02.106 INFO [stderr]    |
Dec 17 19:58:02.106 INFO [stderr] 48 |     graph.print();
Dec 17 19:58:02.106 INFO [stderr]    |     ^^^^^^^^^^^^^^
Dec 17 19:58:02.106 INFO [stderr]    |
Dec 17 19:58:02.106 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 17 19:58:02.106 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 19:58:02.106 INFO [stderr] 
Dec 17 19:58:02.110 INFO [stderr] warning: variable does not need to be mutable
Dec 17 19:58:02.110 INFO [stderr]   --> src/main.rs:27:17
Dec 17 19:58:02.110 INFO [stderr]    |
Dec 17 19:58:02.110 INFO [stderr] 27 |             let mut file = File::open(filename).expect("Couldn't open file");
Dec 17 19:58:02.110 INFO [stderr]    |                 ----^^^^
Dec 17 19:58:02.110 INFO [stderr]    |                 |
Dec 17 19:58:02.110 INFO [stderr]    |                 help: remove this `mut`
Dec 17 19:58:02.110 INFO [stderr]    |
Dec 17 19:58:02.110 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 17 19:58:02.110 INFO [stderr] 
Dec 17 19:58:02.111 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 19:58:02.111 INFO [stderr]   --> src/main.rs:48:5
Dec 17 19:58:02.111 INFO [stderr]    |
Dec 17 19:58:02.111 INFO [stderr] 48 |     graph.print();
Dec 17 19:58:02.111 INFO [stderr]    |     ^^^^^^^^^^^^^^
Dec 17 19:58:02.111 INFO [stderr]    |
Dec 17 19:58:02.111 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 17 19:58:02.111 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 19:58:02.111 INFO [stderr] 
Dec 17 19:58:02.134 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 19.06s
Dec 17 19:58:02.479 INFO running `"docker" "inspect" "8dd4542c6bffc21dbee849c9d0554b6e748a05745bca59963ffdd15f1b57b144"`
Dec 17 19:58:02.638 INFO running `"docker" "rm" "-f" "8dd4542c6bffc21dbee849c9d0554b6e748a05745bca59963ffdd15f1b57b144"`
Dec 17 19:58:02.888 INFO [stdout] 8dd4542c6bffc21dbee849c9d0554b6e748a05745bca59963ffdd15f1b57b144