Dec 18 02:54:25.986 INFO checking bstrydo/xconf against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 02:54:25.986 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-6/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/gh/bstrydo/xconf:/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 18 02:54:26.487 INFO [stdout] 3c1a2d5b16115ea775395a13dc2b184331e477cab054c8ace8683e9526a8b2b8
Dec 18 02:54:26.489 INFO running `"docker" "start" "-a" "3c1a2d5b16115ea775395a13dc2b184331e477cab054c8ace8683e9526a8b2b8"`
Dec 18 02:54:28.983 INFO [stderr]     Checking idna v0.1.2
Dec 18 02:54:30.676 INFO [stderr]     Checking url v1.5.1
Dec 18 02:54:32.124 INFO [stderr]     Checking hyper v0.10.12
Dec 18 02:54:35.912 INFO [stderr]     Checking iron v0.5.1
Dec 18 02:54:36.840 INFO [stderr]     Checking router v0.5.1
Dec 18 02:54:37.509 INFO [stderr]     Checking xconf v0.1.0 (/opt/crater/workdir)
Dec 18 02:54:38.750 INFO [stderr] warning: variable `weird` is assigned to, but never used
Dec 18 02:54:38.752 INFO [stderr]   --> src/bin/lifetimes.rs:11:9
Dec 18 02:54:38.752 INFO [stderr]    |
Dec 18 02:54:38.752 INFO [stderr] 11 |     let weird; //starts living here
Dec 18 02:54:38.753 INFO [stderr]    |         ^^^^^
Dec 18 02:54:38.758 INFO [stderr]    |
Dec 18 02:54:38.764 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 18 02:54:38.764 INFO [stderr]    = note: consider using `_weird` instead
Dec 18 02:54:38.765 INFO [stderr] 
Dec 18 02:54:38.765 INFO [stderr] warning: value assigned to `weird` is never read
Dec 18 02:54:38.765 INFO [stderr]   --> src/bin/lifetimes.rs:15:9
Dec 18 02:54:38.765 INFO [stderr]    |
Dec 18 02:54:38.765 INFO [stderr] 15 |         weird = do_something_weird(&my_v1, 3, my_v2);
Dec 18 02:54:38.765 INFO [stderr]    |         ^^^^^
Dec 18 02:54:38.765 INFO [stderr]    |
Dec 18 02:54:38.766 INFO [stderr]    = note: #[warn(unused_assignments)] on by default
Dec 18 02:54:38.766 INFO [stderr] 
Dec 18 02:54:38.772 INFO [stderr] warning: variable does not need to be mutable
Dec 18 02:54:38.772 INFO [stderr]   --> src/bin/thread_example.rs:12:9
Dec 18 02:54:38.772 INFO [stderr]    |
Dec 18 02:54:38.772 INFO [stderr] 12 |     let mut handles = vec![
Dec 18 02:54:38.772 INFO [stderr]    |         ----^^^^^^^
Dec 18 02:54:38.772 INFO [stderr]    |         |
Dec 18 02:54:38.772 INFO [stderr]    |         help: remove this `mut`
Dec 18 02:54:38.772 INFO [stderr]    |
Dec 18 02:54:38.772 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 18 02:54:38.772 INFO [stderr] 
Dec 18 02:54:38.885 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 02:54:38.885 INFO [stderr]   --> src/bin/thread_example.rs:18:9
Dec 18 02:54:38.886 INFO [stderr]    |
Dec 18 02:54:38.886 INFO [stderr] 18 |         handle.join();
Dec 18 02:54:38.886 INFO [stderr]    |         ^^^^^^^^^^^^^^
Dec 18 02:54:38.886 INFO [stderr] warning: variable does not need to be mutable
Dec 18 02:54:38.887 INFO [stderr]   --> src/bin/thread_example.rs:12:9
Dec 18 02:54:38.887 INFO [stderr]    |
Dec 18 02:54:38.887 INFO [stderr] 12 |     let mut handles = vec![
Dec 18 02:54:38.887 INFO [stderr]    |         ----^^^^^^^
Dec 18 02:54:38.888 INFO [stderr]    |         |
Dec 18 02:54:38.888 INFO [stderr]    |         help: remove this `mut`
Dec 18 02:54:38.888 INFO [stderr]    |
Dec 18 02:54:38.889 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 18 02:54:38.889 INFO [stderr] 
Dec 18 02:54:38.914 INFO [stderr]    |
Dec 18 02:54:38.915 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 18 02:54:38.915 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 02:54:38.915 INFO [stderr] 
Dec 18 02:54:38.965 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 02:54:38.965 INFO [stderr]   --> src/bin/thread_example.rs:18:9
Dec 18 02:54:38.966 INFO [stderr]    |
Dec 18 02:54:38.966 INFO [stderr] 18 |         handle.join();
Dec 18 02:54:38.966 INFO [stderr]    |         ^^^^^^^^^^^^^^
Dec 18 02:54:38.967 INFO [stderr]    |
Dec 18 02:54:38.967 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 18 02:54:38.967 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 02:54:38.967 INFO [stderr] 
Dec 18 02:54:40.016 INFO [stderr] warning: variable `weird` is assigned to, but never used
Dec 18 02:54:40.017 INFO [stderr]   --> src/bin/lifetimes.rs:11:9
Dec 18 02:54:40.017 INFO [stderr]    |
Dec 18 02:54:40.017 INFO [stderr] 11 |     let weird; //starts living here
Dec 18 02:54:40.018 INFO [stderr]    |         ^^^^^
Dec 18 02:54:40.019 INFO [stderr]    |
Dec 18 02:54:40.019 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 18 02:54:40.020 INFO [stderr]    = note: consider using `_weird` instead
Dec 18 02:54:40.020 INFO [stderr] 
Dec 18 02:54:40.020 INFO [stderr] warning: value assigned to `weird` is never read
Dec 18 02:54:40.021 INFO [stderr]   --> src/bin/lifetimes.rs:15:9
Dec 18 02:54:40.021 INFO [stderr]    |
Dec 18 02:54:40.021 INFO [stderr] 15 |         weird = do_something_weird(&my_v1, 3, my_v2);
Dec 18 02:54:40.021 INFO [stderr]    |         ^^^^^
Dec 18 02:54:40.022 INFO [stderr]    |
Dec 18 02:54:40.022 INFO [stderr]    = note: #[warn(unused_assignments)] on by default
Dec 18 02:54:40.022 INFO [stderr] 
Dec 18 02:54:40.535 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.67s
Dec 18 02:54:41.959 INFO running `"docker" "inspect" "3c1a2d5b16115ea775395a13dc2b184331e477cab054c8ace8683e9526a8b2b8"`
Dec 18 02:54:42.266 INFO running `"docker" "rm" "-f" "3c1a2d5b16115ea775395a13dc2b184331e477cab054c8ace8683e9526a8b2b8"`
Dec 18 02:54:42.608 INFO [stdout] 3c1a2d5b16115ea775395a13dc2b184331e477cab054c8ace8683e9526a8b2b8