[INFO] updating cached repository cybermatt/fast-luhn
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/cybermatt/fast-luhn
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/cybermatt/fast-luhn" "work/ex/pr-60039/sources/master#efe2f32a6b8217425f361ec7c206910c611c03ee/gh/cybermatt/fast-luhn"`
[INFO] [stderr] Cloning into 'work/ex/pr-60039/sources/master#efe2f32a6b8217425f361ec7c206910c611c03ee/gh/cybermatt/fast-luhn'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/cybermatt/fast-luhn" "work/ex/pr-60039/sources/try#78b0bd8441ef961f6475e3d47fe3bca38cb83432/gh/cybermatt/fast-luhn"`
[INFO] [stderr] Cloning into 'work/ex/pr-60039/sources/try#78b0bd8441ef961f6475e3d47fe3bca38cb83432/gh/cybermatt/fast-luhn'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 394c73f7bd5d7abef46409d80bc3079f79b23ae7
[INFO] sha for GitHub repo cybermatt/fast-luhn: 394c73f7bd5d7abef46409d80bc3079f79b23ae7
[INFO] validating manifest of cybermatt/fast-luhn on toolchain master#efe2f32a6b8217425f361ec7c206910c611c03ee
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+efe2f32a6b8217425f361ec7c206910c611c03ee-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of cybermatt/fast-luhn on toolchain try#78b0bd8441ef961f6475e3d47fe3bca38cb83432
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+78b0bd8441ef961f6475e3d47fe3bca38cb83432-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing cybermatt/fast-luhn
[INFO] finished frobbing cybermatt/fast-luhn
[INFO] frobbed toml for cybermatt/fast-luhn written to work/ex/pr-60039/sources/master#efe2f32a6b8217425f361ec7c206910c611c03ee/gh/cybermatt/fast-luhn/Cargo.toml
[INFO] started frobbing cybermatt/fast-luhn
[INFO] finished frobbing cybermatt/fast-luhn
[INFO] frobbed toml for cybermatt/fast-luhn written to work/ex/pr-60039/sources/try#78b0bd8441ef961f6475e3d47fe3bca38cb83432/gh/cybermatt/fast-luhn/Cargo.toml
[INFO] crate cybermatt/fast-luhn already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+efe2f32a6b8217425f361ec7c206910c611c03ee-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+78b0bd8441ef961f6475e3d47fe3bca38cb83432-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking cybermatt/fast-luhn against master#efe2f32a6b8217425f361ec7c206910c611c03ee for pr-60039
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-60039/worker-7/master#efe2f32a6b8217425f361ec7c206910c611c03ee:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-60039/sources/master#efe2f32a6b8217425f361ec7c206910c611c03ee/gh/cybermatt/fast-luhn:/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" "+efe2f32a6b8217425f361ec7c206910c611c03ee-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] bfeda184403f64ef5ef338ce46ce33ea3f68eda2a4f91220b8731787238440e7
[INFO] running `"docker" "start" "-a" "bfeda184403f64ef5ef338ce46ce33ea3f68eda2a4f91220b8731787238440e7"`
[INFO] [stderr]    Compiling syn v0.15.29
[INFO] [stderr]    Compiling pyo3 v0.5.4
[INFO] [stderr]    Compiling pyo3-derive-backend v0.5.4
[INFO] [stderr]    Compiling pyo3cls v0.5.4
[INFO] [stderr]     Checking fast_luhn v0.1.3 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `Rng`
[INFO] [stderr]  --> src/lib.rs:8:24
[INFO] [stderr]   |
[INFO] [stderr] 8 | use rand::{thread_rng, Rng};
[INFO] [stderr]   |                        ^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Rng`
[INFO] [stderr]  --> src/lib.rs:8:24
[INFO] [stderr]   |
[INFO] [stderr] 8 | use rand::{thread_rng, Rng};
[INFO] [stderr]   |                        ^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 38.26s
[INFO] running `"docker" "inspect" "bfeda184403f64ef5ef338ce46ce33ea3f68eda2a4f91220b8731787238440e7"`
[INFO] running `"docker" "rm" "-f" "bfeda184403f64ef5ef338ce46ce33ea3f68eda2a4f91220b8731787238440e7"`
[INFO] [stdout] bfeda184403f64ef5ef338ce46ce33ea3f68eda2a4f91220b8731787238440e7