[INFO] updating cached repository ToruNiina/rust-ising
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/ToruNiina/rust-ising
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/ToruNiina/rust-ising" "work/ex/beta-1.37-6/sources/1.36.0/gh/ToruNiina/rust-ising"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/ToruNiina/rust-ising'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/ToruNiina/rust-ising" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/ToruNiina/rust-ising"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/ToruNiina/rust-ising'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 020ead5384428acb2fd45a2bc0fea7ec6baa59f8
[INFO] sha for GitHub repo ToruNiina/rust-ising: 020ead5384428acb2fd45a2bc0fea7ec6baa59f8
[INFO] validating manifest of ToruNiina/rust-ising on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of ToruNiina/rust-ising on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing ToruNiina/rust-ising
[INFO] finished frobbing ToruNiina/rust-ising
[INFO] frobbed toml for ToruNiina/rust-ising written to work/ex/beta-1.37-6/sources/1.36.0/gh/ToruNiina/rust-ising/Cargo.toml
[INFO] started frobbing ToruNiina/rust-ising
[INFO] finished frobbing ToruNiina/rust-ising
[INFO] frobbed toml for ToruNiina/rust-ising written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/ToruNiina/rust-ising/Cargo.toml
[INFO] crate ToruNiina/rust-ising already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing ToruNiina/rust-ising against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/ToruNiina/rust-ising:/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-2019-07-23" "build" "--frozen"`
[INFO] [stdout] a0f8a67f02f881e63f8021c99f22566f27c3e6f522afd0663ce19edeb0fe81d8
[INFO] running `"docker" "start" "-a" "a0f8a67f02f881e63f8021c99f22566f27c3e6f522afd0663ce19edeb0fe81d8"`
[INFO] [stderr]    Compiling ising v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `rng`
[INFO] [stderr]    --> src/main.rs:147:63
[INFO] [stderr]     |
[INFO] [stderr] 147 | fn step<R: Rng>(field: &mut Field, hamiltonian: &Hamiltonian, rng: &mut R) {
[INFO] [stderr]     |                                                               ^^^ help: consider prefixing with an underscore: `_rng`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.61s
[INFO] running `"docker" "inspect" "a0f8a67f02f881e63f8021c99f22566f27c3e6f522afd0663ce19edeb0fe81d8"`
[INFO] running `"docker" "rm" "-f" "a0f8a67f02f881e63f8021c99f22566f27c3e6f522afd0663ce19edeb0fe81d8"`
[INFO] [stdout] a0f8a67f02f881e63f8021c99f22566f27c3e6f522afd0663ce19edeb0fe81d8
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/ToruNiina/rust-ising:/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-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] e619336885b21da36b7e08785a233d4e852b59c2511452f4b9dcf39692a8e791
[INFO] running `"docker" "start" "-a" "e619336885b21da36b7e08785a233d4e852b59c2511452f4b9dcf39692a8e791"`
[INFO] [stderr]    Compiling ising v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `rng`
[INFO] [stderr]    --> src/main.rs:147:63
[INFO] [stderr]     |
[INFO] [stderr] 147 | fn step<R: Rng>(field: &mut Field, hamiltonian: &Hamiltonian, rng: &mut R) {
[INFO] [stderr]     |                                                               ^^^ help: consider prefixing with an underscore: `_rng`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.67s
[INFO] running `"docker" "inspect" "e619336885b21da36b7e08785a233d4e852b59c2511452f4b9dcf39692a8e791"`
[INFO] running `"docker" "rm" "-f" "e619336885b21da36b7e08785a233d4e852b59c2511452f4b9dcf39692a8e791"`
[INFO] [stdout] e619336885b21da36b7e08785a233d4e852b59c2511452f4b9dcf39692a8e791
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/ToruNiina/rust-ising:/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-2019-07-23" "test" "--frozen"`
[INFO] [stdout] ce0a71908c1e7fe98764ff7d330599dd77c155acd599c47114438a437f6766b1
[INFO] running `"docker" "start" "-a" "ce0a71908c1e7fe98764ff7d330599dd77c155acd599c47114438a437f6766b1"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/ising-8c65ddd5f96f9a4d
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "ce0a71908c1e7fe98764ff7d330599dd77c155acd599c47114438a437f6766b1"`
[INFO] running `"docker" "rm" "-f" "ce0a71908c1e7fe98764ff7d330599dd77c155acd599c47114438a437f6766b1"`
[INFO] [stdout] ce0a71908c1e7fe98764ff7d330599dd77c155acd599c47114438a437f6766b1