Dec 17 21:19:03.269 INFO checking koba-e964/rust-number-theory against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 17 21:19:03.269 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/gh/koba-e964/rust-number-theory:/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 21:19:03.529 INFO [stdout] 83a0619a1007a0b06e3e3071008c9434759c95260a29e7dff4bb116925e4d691
Dec 17 21:19:03.534 INFO running `"docker" "start" "-a" "83a0619a1007a0b06e3e3071008c9434759c95260a29e7dff4bb116925e4d691"`
Dec 17 21:19:04.452 INFO [stderr]     Checking rust-number-theory v0.1.0 (/opt/crater/workdir)
Dec 17 21:19:04.640 INFO [stderr] warning: unused import: `BigInt`
Dec 17 21:19:04.640 INFO [stderr]  --> src/determinant.rs:3:11
Dec 17 21:19:04.640 INFO [stderr]   |
Dec 17 21:19:04.640 INFO [stderr] 3 | use num::{BigInt, BigRational, One, Zero};
Dec 17 21:19:04.640 INFO [stderr]   |           ^^^^^^
Dec 17 21:19:04.640 INFO [stderr]   |
Dec 17 21:19:04.640 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 17 21:19:04.640 INFO [stderr] 
Dec 17 21:19:04.664 INFO [stderr] warning: unused import: `num::BigInt`
Dec 17 21:19:04.664 INFO [stderr]    --> src/algebraic.rs:137:9
Dec 17 21:19:04.664 INFO [stderr]     |
Dec 17 21:19:04.664 INFO [stderr] 137 |     use num::BigInt;
Dec 17 21:19:04.664 INFO [stderr]     |         ^^^^^^^^^^^
Dec 17 21:19:04.664 INFO [stderr]     |
Dec 17 21:19:04.664 INFO [stderr]     = note: #[warn(unused_imports)] on by default
Dec 17 21:19:04.664 INFO [stderr] 
Dec 17 21:19:04.665 INFO [stderr] warning: unused import: `BigInt`
Dec 17 21:19:04.665 INFO [stderr]  --> src/determinant.rs:3:11
Dec 17 21:19:04.665 INFO [stderr]   |
Dec 17 21:19:04.665 INFO [stderr] 3 | use num::{BigInt, BigRational, One, Zero};
Dec 17 21:19:04.665 INFO [stderr]   |           ^^^^^^
Dec 17 21:19:04.665 INFO [stderr] 
Dec 17 21:19:04.665 INFO [stderr] warning: doc comment not used by rustdoc
Dec 17 21:19:04.665 INFO [stderr]   --> src/determinant.rs:46:9
Dec 17 21:19:04.665 INFO [stderr]    |
Dec 17 21:19:04.665 INFO [stderr] 46 |         /// det((2, -1; 5, -4)) = -3
Dec 17 21:19:04.665 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 21:19:04.665 INFO [stderr]    |
Dec 17 21:19:04.665 INFO [stderr]    = note: #[warn(unused_doc_comments)] on by default
Dec 17 21:19:04.666 INFO [stderr] 
Dec 17 21:19:04.666 INFO [stderr] warning: doc comment not used by rustdoc
Dec 17 21:19:04.666 INFO [stderr]   --> src/determinant.rs:53:9
Dec 17 21:19:04.666 INFO [stderr]    |
Dec 17 21:19:04.666 INFO [stderr] 53 |         /// det((3, 2, 1; -1, 2, 2; -2, -3, 2)) = 33
Dec 17 21:19:04.666 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 21:19:04.666 INFO [stderr] 
Dec 17 21:19:05.125 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.70s
Dec 17 21:19:05.520 INFO running `"docker" "inspect" "83a0619a1007a0b06e3e3071008c9434759c95260a29e7dff4bb116925e4d691"`
Dec 17 21:19:05.766 INFO running `"docker" "rm" "-f" "83a0619a1007a0b06e3e3071008c9434759c95260a29e7dff4bb116925e4d691"`
Dec 17 21:19:06.080 INFO [stdout] 83a0619a1007a0b06e3e3071008c9434759c95260a29e7dff4bb116925e4d691