Dec 19 12:57:00.265 INFO checking matthiasbeyer/task-rain against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 12:57:00.266 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-4/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/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" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 12:57:00.678 INFO [stdout] dc4cae95466435db798ef2af7bc1906d7964c67e4eae0ec3e03c6cf90fc8dfec
Dec 19 12:57:00.681 INFO running `"docker" "start" "-a" "dc4cae95466435db798ef2af7bc1906d7964c67e4eae0ec3e03c6cf90fc8dfec"`
Dec 19 12:57:01.404 INFO [stderr]     Checking itoa v0.3.3
Dec 19 12:57:01.404 INFO [stderr]    Compiling backtrace-sys v0.1.12
Dec 19 12:57:01.404 INFO [stderr]     Checking term_size v0.3.0
Dec 19 12:57:01.404 INFO [stderr]     Checking atty v0.2.2
Dec 19 12:57:01.404 INFO [stderr]     Checking termion v1.5.1
Dec 19 12:57:01.408 INFO [stderr]     Checking uuid v0.4.0
Dec 19 12:57:01.408 INFO [stderr]     Checking itertools v0.6.2
Dec 19 12:57:01.412 INFO [stderr]    Compiling serde_derive v0.9.15
Dec 19 12:57:01.909 INFO [stderr]     Checking chrono v0.2.25
Dec 19 12:57:02.049 INFO [stderr]     Checking textwrap v0.8.0
Dec 19 12:57:02.969 INFO [stderr]     Checking serde_json v0.9.10
Dec 19 12:57:03.508 INFO [stderr]     Checking clap v2.26.1
Dec 19 12:57:08.991 INFO [stderr]     Checking task-hookrs v0.3.0
Dec 19 12:57:20.031 INFO [stderr]     Checking backtrace v0.3.3
Dec 19 12:57:20.508 INFO [stderr]     Checking error-chain v0.11.0
Dec 19 12:57:20.952 INFO [stderr]     Checking mowl v1.2.0
Dec 19 12:57:21.331 INFO [stderr]     Checking rain v0.3.1
Dec 19 12:57:21.755 INFO [stderr]     Checking task-graph v0.1.0 (/opt/crater/workdir)
Dec 19 12:57:23.103 INFO [stderr] warning: unused variable: `time`
Dec 19 12:57:23.103 INFO [stderr]   --> src/main.rs:42:10
Dec 19 12:57:23.103 INFO [stderr]    |
Dec 19 12:57:23.103 INFO [stderr] 42 |     for (time, group) in tasks.into_iter() {
Dec 19 12:57:23.103 INFO [stderr]    |          ^^^^ help: consider using `_time` instead
Dec 19 12:57:23.103 INFO [stderr]    |
Dec 19 12:57:23.103 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 12:57:23.103 INFO [stderr] 
Dec 19 12:57:23.109 INFO [stderr] warning: unused variable: `time`
Dec 19 12:57:23.109 INFO [stderr]   --> src/main.rs:42:10
Dec 19 12:57:23.109 INFO [stderr]    |
Dec 19 12:57:23.109 INFO [stderr] 42 |     for (time, group) in tasks.into_iter() {
Dec 19 12:57:23.109 INFO [stderr]    |          ^^^^ help: consider using `_time` instead
Dec 19 12:57:23.109 INFO [stderr]    |
Dec 19 12:57:23.109 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 12:57:23.109 INFO [stderr] 
Dec 19 12:57:23.110 INFO [stderr] warning: variable does not need to be mutable
Dec 19 12:57:23.110 INFO [stderr]   --> src/main.rs:27:17
Dec 19 12:57:23.110 INFO [stderr]    |
Dec 19 12:57:23.110 INFO [stderr] 27 |             let mut file = File::open(filename).expect("Couldn't open file");
Dec 19 12:57:23.110 INFO [stderr]    |                 ----^^^^
Dec 19 12:57:23.110 INFO [stderr]    |                 |
Dec 19 12:57:23.110 INFO [stderr]    |                 help: remove this `mut`
Dec 19 12:57:23.110 INFO [stderr]    |
Dec 19 12:57:23.110 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 19 12:57:23.110 INFO [stderr] 
Dec 19 12:57:23.110 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 12:57:23.110 INFO [stderr]   --> src/main.rs:48:5
Dec 19 12:57:23.110 INFO [stderr]    |
Dec 19 12:57:23.111 INFO [stderr] 48 |     graph.print();
Dec 19 12:57:23.111 INFO [stderr]    |     ^^^^^^^^^^^^^^
Dec 19 12:57:23.111 INFO [stderr]    |
Dec 19 12:57:23.111 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 19 12:57:23.111 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 12:57:23.111 INFO [stderr] 
Dec 19 12:57:23.122 INFO [stderr] warning: variable does not need to be mutable
Dec 19 12:57:23.122 INFO [stderr]   --> src/main.rs:27:17
Dec 19 12:57:23.122 INFO [stderr]    |
Dec 19 12:57:23.122 INFO [stderr] 27 |             let mut file = File::open(filename).expect("Couldn't open file");
Dec 19 12:57:23.122 INFO [stderr]    |                 ----^^^^
Dec 19 12:57:23.122 INFO [stderr]    |                 |
Dec 19 12:57:23.122 INFO [stderr]    |                 help: remove this `mut`
Dec 19 12:57:23.122 INFO [stderr]    |
Dec 19 12:57:23.122 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 19 12:57:23.122 INFO [stderr] 
Dec 19 12:57:23.123 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 12:57:23.123 INFO [stderr]   --> src/main.rs:48:5
Dec 19 12:57:23.123 INFO [stderr]    |
Dec 19 12:57:23.123 INFO [stderr] 48 |     graph.print();
Dec 19 12:57:23.123 INFO [stderr]    |     ^^^^^^^^^^^^^^
Dec 19 12:57:23.123 INFO [stderr]    |
Dec 19 12:57:23.123 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 19 12:57:23.123 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 12:57:23.123 INFO [stderr] 
Dec 19 12:57:23.148 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 21.87s
Dec 19 12:57:23.885 INFO running `"docker" "inspect" "dc4cae95466435db798ef2af7bc1906d7964c67e4eae0ec3e03c6cf90fc8dfec"`
Dec 19 12:57:24.044 INFO running `"docker" "rm" "-f" "dc4cae95466435db798ef2af7bc1906d7964c67e4eae0ec3e03c6cf90fc8dfec"`
Dec 19 12:57:24.220 INFO [stdout] dc4cae95466435db798ef2af7bc1906d7964c67e4eae0ec3e03c6cf90fc8dfec