Dec 18 18:22:25.573 INFO checking attr-0.1.0 against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 18:22:25.573 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/reg/attr/0.1.0:/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 18:22:25.810 INFO [stdout] e3bd366025a0627c44d352207f4ebe405060c8068c0db503010737142ba6899b
Dec 18 18:22:25.822 INFO running `"docker" "start" "-a" "e3bd366025a0627c44d352207f4ebe405060c8068c0db503010737142ba6899b"`
Dec 18 18:22:26.804 INFO [stderr] warning: only one of `license` or `license-file` is necessary
Dec 18 18:22:26.828 INFO [stderr]     Checking attr v0.1.0 (/opt/crater/workdir)
Dec 18 18:22:27.620 INFO [stderr] warning: variable does not need to be mutable
Dec 18 18:22:27.620 INFO [stderr]    --> tests/simple.rs:108:9
Dec 18 18:22:27.620 INFO [stderr]     |
Dec 18 18:22:27.620 INFO [stderr] 108 |     let mut batz = Bar::attrs().batz.get(&mut f);
Dec 18 18:22:27.620 INFO [stderr]     |         ----^^^^
Dec 18 18:22:27.620 INFO [stderr]     |         |
Dec 18 18:22:27.620 INFO [stderr]     |         help: remove this `mut`
Dec 18 18:22:27.620 INFO [stderr]     |
Dec 18 18:22:27.620 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 18 18:22:27.620 INFO [stderr] 
Dec 18 18:22:27.694 INFO [stderr] warning: variable does not need to be mutable
Dec 18 18:22:27.695 INFO [stderr]    --> tests/nested.rs:252:13
Dec 18 18:22:27.695 INFO [stderr]     |
Dec 18 18:22:27.695 INFO [stderr] 252 |         let mut x: &mut i32 = foo::Numbers.at(&mut f, 1);
Dec 18 18:22:27.695 INFO [stderr]     |             ----^
Dec 18 18:22:27.695 INFO [stderr]     |             |
Dec 18 18:22:27.695 INFO [stderr]     |             help: remove this `mut`
Dec 18 18:22:27.695 INFO [stderr]     |
Dec 18 18:22:27.695 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 18 18:22:27.695 INFO [stderr] 
Dec 18 18:22:27.783 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.99s
Dec 18 18:22:28.148 INFO running `"docker" "inspect" "e3bd366025a0627c44d352207f4ebe405060c8068c0db503010737142ba6899b"`
Dec 18 18:22:28.408 INFO running `"docker" "rm" "-f" "e3bd366025a0627c44d352207f4ebe405060c8068c0db503010737142ba6899b"`
Dec 18 18:22:28.668 INFO [stdout] e3bd366025a0627c44d352207f4ebe405060c8068c0db503010737142ba6899b