Dec 18 12:37:06.311 INFO checking r4-1.0.1 against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 12:37:06.311 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-7/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/reg/r4/1.0.1:/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 12:37:06.519 INFO [stdout] d4905a88183e4ae53f19410803f7dc593cc709e08632ebbb7bea4075b36ea204
Dec 18 12:37:06.519 INFO running `"docker" "start" "-a" "d4905a88183e4ae53f19410803f7dc593cc709e08632ebbb7bea4075b36ea204"`
Dec 18 12:37:07.174 INFO [stderr]     Checking r4 v1.0.1 (/opt/crater/workdir)
Dec 18 12:37:07.571 INFO [stderr] warning: unused variable: `i`
Dec 18 12:37:07.571 INFO [stderr]    --> src/lib.rs:407:34
Dec 18 12:37:07.571 INFO [stderr]     |
Dec 18 12:37:07.571 INFO [stderr] 407 |                     iterate![for i in 0..4;
Dec 18 12:37:07.571 INFO [stderr]     |                                  ^ help: consider using `_i` instead
Dec 18 12:37:07.571 INFO [stderr]     |
Dec 18 12:37:07.571 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 18 12:37:07.571 INFO [stderr] 
Dec 18 12:37:07.571 INFO [stderr] warning: unused variable: `x`
Dec 18 12:37:07.571 INFO [stderr]    --> src/lib.rs:433:34
Dec 18 12:37:07.571 INFO [stderr]     |
Dec 18 12:37:07.571 INFO [stderr] 433 |                     iterate![for x in vs.iter();
Dec 18 12:37:07.571 INFO [stderr]     |                                  ^ help: consider using `_x` instead
Dec 18 12:37:07.571 INFO [stderr] 
Dec 18 12:37:07.571 INFO [stderr] warning: unused variable: `x`
Dec 18 12:37:07.571 INFO [stderr]    --> src/lib.rs:443:34
Dec 18 12:37:07.571 INFO [stderr]     |
Dec 18 12:37:07.571 INFO [stderr] 443 |                     iterate![for x in vs.iter();
Dec 18 12:37:07.571 INFO [stderr]     |                                  ^ help: consider using `_x` instead
Dec 18 12:37:07.571 INFO [stderr] 
Dec 18 12:37:07.571 INFO [stderr] warning: unused variable: `a`
Dec 18 12:37:07.571 INFO [stderr]    --> src/lib.rs:474:34
Dec 18 12:37:07.571 INFO [stderr]     |
Dec 18 12:37:07.571 INFO [stderr] 474 |                              let a = *x + 3;
Dec 18 12:37:07.571 INFO [stderr]     |                                  ^ help: consider using `_a` instead
Dec 18 12:37:07.571 INFO [stderr] 
Dec 18 12:37:07.571 INFO [stderr] warning: unused variable: `a`
Dec 18 12:37:07.571 INFO [stderr]    --> src/lib.rs:489:34
Dec 18 12:37:07.571 INFO [stderr]     |
Dec 18 12:37:07.571 INFO [stderr] 489 |                              let a = *x + 3;
Dec 18 12:37:07.571 INFO [stderr]     |                                  ^ help: consider using `_a` instead
Dec 18 12:37:07.571 INFO [stderr] 
Dec 18 12:37:07.571 INFO [stderr] warning: unused variable: `y`
Dec 18 12:37:07.571 INFO [stderr]    --> src/lib.rs:506:34
Dec 18 12:37:07.571 INFO [stderr]     |
Dec 18 12:37:07.571 INFO [stderr] 506 |                              for y in vs.iter();
Dec 18 12:37:07.571 INFO [stderr]     |                                  ^ help: consider using `_y` instead
Dec 18 12:37:07.571 INFO [stderr] 
Dec 18 12:37:07.571 INFO [stderr] warning: unused variable: `x`
Dec 18 12:37:07.571 INFO [stderr]    --> src/lib.rs:522:34
Dec 18 12:37:07.571 INFO [stderr]     |
Dec 18 12:37:07.571 INFO [stderr] 522 |                              let x = *x + 1;
Dec 18 12:37:07.571 INFO [stderr]     |                                  ^ help: consider using `_x` instead
Dec 18 12:37:07.571 INFO [stderr] 
Dec 18 12:37:07.649 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.49s
Dec 18 12:37:08.039 INFO running `"docker" "inspect" "d4905a88183e4ae53f19410803f7dc593cc709e08632ebbb7bea4075b36ea204"`
Dec 18 12:37:08.149 INFO running `"docker" "rm" "-f" "d4905a88183e4ae53f19410803f7dc593cc709e08632ebbb7bea4075b36ea204"`
Dec 18 12:37:08.308 INFO [stdout] d4905a88183e4ae53f19410803f7dc593cc709e08632ebbb7bea4075b36ea204