Dec 17 20:13:09.601 INFO checking maniflames/time-frame-json-generator against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 17 20:13:09.601 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-2/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/gh/maniflames/time-frame-json-generator:/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 20:13:10.072 INFO [stdout] 3ab6601069e35e0c1e208aff82947aa419f157ffa5308d2a7c2a4df14493b579
Dec 17 20:13:10.080 INFO running `"docker" "start" "-a" "3ab6601069e35e0c1e208aff82947aa419f157ffa5308d2a7c2a4df14493b579"`
Dec 17 20:13:11.456 INFO [stderr]     Checking timeframe v0.0.1 (/opt/crater/workdir)
Dec 17 20:13:11.788 INFO [stderr] warning: unused import: `self`
Dec 17 20:13:11.788 INFO [stderr]  --> src/main.rs:7:29
Dec 17 20:13:11.788 INFO [stderr]   |
Dec 17 20:13:11.788 INFO [stderr] 7 | use rustc_serialize::json::{self, Encoder};
Dec 17 20:13:11.788 INFO [stderr]   |                             ^^^^
Dec 17 20:13:11.788 INFO [stderr]   |
Dec 17 20:13:11.788 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 17 20:13:11.788 INFO [stderr] 
Dec 17 20:13:11.804 INFO [stderr] warning: unused import: `self`
Dec 17 20:13:11.804 INFO [stderr]  --> src/main.rs:7:29
Dec 17 20:13:11.804 INFO [stderr]   |
Dec 17 20:13:11.804 INFO [stderr] 7 | use rustc_serialize::json::{self, Encoder};
Dec 17 20:13:11.804 INFO [stderr]   |                             ^^^^
Dec 17 20:13:11.804 INFO [stderr]   |
Dec 17 20:13:11.804 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 17 20:13:11.804 INFO [stderr] 
Dec 17 20:13:12.077 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 20:13:12.077 INFO [stderr]   --> src/utils.rs:55:5
Dec 17 20:13:12.077 INFO [stderr]    |
Dec 17 20:13:12.077 INFO [stderr] 55 |     f.read_to_string(&mut json);
Dec 17 20:13:12.077 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 20:13:12.077 INFO [stderr]    |
Dec 17 20:13:12.077 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 17 20:13:12.077 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 20:13:12.077 INFO [stderr] 
Dec 17 20:13:12.124 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 20:13:12.124 INFO [stderr]   --> src/utils.rs:55:5
Dec 17 20:13:12.124 INFO [stderr]    |
Dec 17 20:13:12.124 INFO [stderr] 55 |     f.read_to_string(&mut json);
Dec 17 20:13:12.124 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 20:13:12.124 INFO [stderr]    |
Dec 17 20:13:12.124 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 17 20:13:12.124 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 20:13:12.124 INFO [stderr] 
Dec 17 20:13:12.156 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.74s
Dec 17 20:13:13.351 INFO running `"docker" "inspect" "3ab6601069e35e0c1e208aff82947aa419f157ffa5308d2a7c2a4df14493b579"`
Dec 17 20:13:13.618 INFO running `"docker" "rm" "-f" "3ab6601069e35e0c1e208aff82947aa419f157ffa5308d2a7c2a4df14493b579"`
Dec 17 20:13:13.928 INFO [stdout] 3ab6601069e35e0c1e208aff82947aa419f157ffa5308d2a7c2a4df14493b579