[INFO] updating cached repository koba-e964/rust-number-theory
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/koba-e964/rust-number-theory
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/koba-e964/rust-number-theory" "work/ex/pr-57745/sources/master#f613dc138b4012cf3d2eb40718fbcc7cf0a34039/gh/koba-e964/rust-number-theory"`
[INFO] [stderr] Cloning into 'work/ex/pr-57745/sources/master#f613dc138b4012cf3d2eb40718fbcc7cf0a34039/gh/koba-e964/rust-number-theory'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/koba-e964/rust-number-theory" "work/ex/pr-57745/sources/try#29640c57b5f92febba0e40c50cb863c9a7ede51d/gh/koba-e964/rust-number-theory"`
[INFO] [stderr] Cloning into 'work/ex/pr-57745/sources/try#29640c57b5f92febba0e40c50cb863c9a7ede51d/gh/koba-e964/rust-number-theory'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 6585894b5b711fd471dcb52a402a289eca26a1df
[INFO] sha for GitHub repo koba-e964/rust-number-theory: 6585894b5b711fd471dcb52a402a289eca26a1df
[INFO] validating manifest of koba-e964/rust-number-theory on toolchain master#f613dc138b4012cf3d2eb40718fbcc7cf0a34039
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+f613dc138b4012cf3d2eb40718fbcc7cf0a34039-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of koba-e964/rust-number-theory on toolchain try#29640c57b5f92febba0e40c50cb863c9a7ede51d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+29640c57b5f92febba0e40c50cb863c9a7ede51d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing koba-e964/rust-number-theory
[INFO] finished frobbing koba-e964/rust-number-theory
[INFO] frobbed toml for koba-e964/rust-number-theory written to work/ex/pr-57745/sources/master#f613dc138b4012cf3d2eb40718fbcc7cf0a34039/gh/koba-e964/rust-number-theory/Cargo.toml
[INFO] started frobbing koba-e964/rust-number-theory
[INFO] finished frobbing koba-e964/rust-number-theory
[INFO] frobbed toml for koba-e964/rust-number-theory written to work/ex/pr-57745/sources/try#29640c57b5f92febba0e40c50cb863c9a7ede51d/gh/koba-e964/rust-number-theory/Cargo.toml
[INFO] crate koba-e964/rust-number-theory has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+f613dc138b4012cf3d2eb40718fbcc7cf0a34039-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+29640c57b5f92febba0e40c50cb863c9a7ede51d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking koba-e964/rust-number-theory against master#f613dc138b4012cf3d2eb40718fbcc7cf0a34039 for pr-57745
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57745/worker-0/master#f613dc138b4012cf3d2eb40718fbcc7cf0a34039:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57745/sources/master#f613dc138b4012cf3d2eb40718fbcc7cf0a34039/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" "+f613dc138b4012cf3d2eb40718fbcc7cf0a34039-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 7ba91f366d06cac8e069b3731fc30a6f914fb5da4e975f99c9ef36bdf43283de
[INFO] running `"docker" "start" "-a" "7ba91f366d06cac8e069b3731fc30a6f914fb5da4e975f99c9ef36bdf43283de"`
[INFO] [stderr]     Checking num-integer v0.1.39
[INFO] [stderr]     Checking num-complex v0.2.1
[INFO] [stderr]     Checking num-bigint v0.2.1
[INFO] [stderr]     Checking num-iter v0.1.37
[INFO] [stderr]     Checking num-rational v0.2.1
[INFO] [stderr]     Checking num v0.2.0
[INFO] [stderr]     Checking rust-number-theory v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `num::BigInt`
[INFO] [stderr]    --> src/algebraic.rs:137:9
[INFO] [stderr]     |
[INFO] [stderr] 137 |     use num::BigInt;
[INFO] [stderr]     |         ^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `BigInt`
[INFO] [stderr]  --> src/determinant.rs:3:11
[INFO] [stderr]   |
[INFO] [stderr] 3 | use num::{BigInt, BigRational, One, Zero};
[INFO] [stderr]   |           ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: doc comment not used by rustdoc
[INFO] [stderr]   --> src/determinant.rs:46:9
[INFO] [stderr]    |
[INFO] [stderr] 46 |         /// det((2, -1; 5, -4)) = -3
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_doc_comments)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: doc comment not used by rustdoc
[INFO] [stderr]   --> src/determinant.rs:53:9
[INFO] [stderr]    |
[INFO] [stderr] 53 |         /// det((3, 2, 1; -1, 2, 2; -2, -3, 2)) = 33
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `BigInt`
[INFO] [stderr]  --> src/determinant.rs:3:11
[INFO] [stderr]   |
[INFO] [stderr] 3 | use num::{BigInt, BigRational, One, Zero};
[INFO] [stderr]   |           ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.07s
[INFO] running `"docker" "inspect" "7ba91f366d06cac8e069b3731fc30a6f914fb5da4e975f99c9ef36bdf43283de"`
[INFO] running `"docker" "rm" "-f" "7ba91f366d06cac8e069b3731fc30a6f914fb5da4e975f99c9ef36bdf43283de"`
[INFO] [stdout] 7ba91f366d06cac8e069b3731fc30a6f914fb5da4e975f99c9ef36bdf43283de