[INFO] updating cached repository amilajack/rust-algos
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/amilajack/rust-algos
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/amilajack/rust-algos" "work/ex/beta-1.38-1/sources/1.37.0/gh/amilajack/rust-algos"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/amilajack/rust-algos'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/amilajack/rust-algos" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/amilajack/rust-algos"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/amilajack/rust-algos'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 3ddc9195f0689b631bfdd97dd878adb04574f7b9
[INFO] sha for GitHub repo amilajack/rust-algos: 3ddc9195f0689b631bfdd97dd878adb04574f7b9
[INFO] validating manifest of amilajack/rust-algos on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of amilajack/rust-algos on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing amilajack/rust-algos
[INFO] finished frobbing amilajack/rust-algos
[INFO] frobbed toml for amilajack/rust-algos written to work/ex/beta-1.38-1/sources/1.37.0/gh/amilajack/rust-algos/Cargo.toml
[INFO] started frobbing amilajack/rust-algos
[INFO] finished frobbing amilajack/rust-algos
[INFO] frobbed toml for amilajack/rust-algos written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/amilajack/rust-algos/Cargo.toml
[INFO] crate amilajack/rust-algos already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing amilajack/rust-algos against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/amilajack/rust-algos:/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=warn" "-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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] df36b13c4dcc8b17c0df696f5f390a0c4a4186accc98466da455e0fc3616f8db
[INFO] running `"docker" "start" "-a" "df36b13c4dcc8b17c0df696f5f390a0c4a4186accc98466da455e0fc3616f8db"`
[INFO] [stderr]    Compiling algos v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: function is never used: `is_prime`
[INFO] [stderr]   --> src/math.rs:21:1
[INFO] [stderr]    |
[INFO] [stderr] 21 | pub fn is_prime(a: u32) -> bool {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.86s
[INFO] running `"docker" "inspect" "df36b13c4dcc8b17c0df696f5f390a0c4a4186accc98466da455e0fc3616f8db"`
[INFO] running `"docker" "rm" "-f" "df36b13c4dcc8b17c0df696f5f390a0c4a4186accc98466da455e0fc3616f8db"`
[INFO] [stdout] df36b13c4dcc8b17c0df696f5f390a0c4a4186accc98466da455e0fc3616f8db
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/amilajack/rust-algos:/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=warn" "-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" "+beta-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] 8445866d55ffacc85cf1ea2fc474fc95883a845d0d57bbe093dec7ab7cfd0898
[INFO] running `"docker" "start" "-a" "8445866d55ffacc85cf1ea2fc474fc95883a845d0d57bbe093dec7ab7cfd0898"`
[INFO] [stderr]    Compiling algos v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.75s
[INFO] running `"docker" "inspect" "8445866d55ffacc85cf1ea2fc474fc95883a845d0d57bbe093dec7ab7cfd0898"`
[INFO] running `"docker" "rm" "-f" "8445866d55ffacc85cf1ea2fc474fc95883a845d0d57bbe093dec7ab7cfd0898"`
[INFO] [stdout] 8445866d55ffacc85cf1ea2fc474fc95883a845d0d57bbe093dec7ab7cfd0898
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/amilajack/rust-algos:/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=warn" "-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" "+beta-2019-08-13" "test" "--frozen"`
[INFO] [stdout] 046c97c5351a195795e22d7b249610c73b239969bba44f48d479798e9c4fb65c
[INFO] running `"docker" "start" "-a" "046c97c5351a195795e22d7b249610c73b239969bba44f48d479798e9c4fb65c"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/algos-e54ead7be0565c16
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test math::test::test_euclidea_gcd ... ok
[INFO] [stdout] test math::test::test_prime ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "046c97c5351a195795e22d7b249610c73b239969bba44f48d479798e9c4fb65c"`
[INFO] running `"docker" "rm" "-f" "046c97c5351a195795e22d7b249610c73b239969bba44f48d479798e9c4fb65c"`
[INFO] [stdout] 046c97c5351a195795e22d7b249610c73b239969bba44f48d479798e9c4fb65c