[INFO] cloning repository https://github.com/ToruNiina/rust-ising
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ToruNiina/rust-ising" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FToruNiina%2Frust-ising"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FToruNiina%2Frust-ising'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 020ead5384428acb2fd45a2bc0fea7ec6baa59f8
[INFO] checking ToruNiina/rust-ising against master#2748a9fd93dd1a00a4521f4f16de5befbf77f6cd for pr-62262-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FToruNiina%2Frust-ising" "/workspace/builds/worker-10/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ToruNiina/rust-ising on toolchain 2748a9fd93dd1a00a4521f4f16de5befbf77f6cd
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/ToruNiina/rust-ising
[INFO] finished tweaking git repo https://github.com/ToruNiina/rust-ising
[INFO] tweaked toml for git repo https://github.com/ToruNiina/rust-ising written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/ToruNiina/rust-ising already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] b7a53af8cbaa8e33f06e4a12ca5d1d59ff230a3af721d542b4cb9e3fb3f07991
[INFO] running `"docker" "start" "-a" "b7a53af8cbaa8e33f06e4a12ca5d1d59ff230a3af721d542b4cb9e3fb3f07991"`
[INFO] [stderr]     Checking ising v0.1.0 (/opt/rustwide/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] 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 1.29s
[INFO] running `"docker" "inspect" "b7a53af8cbaa8e33f06e4a12ca5d1d59ff230a3af721d542b4cb9e3fb3f07991"`
[INFO] running `"docker" "rm" "-f" "b7a53af8cbaa8e33f06e4a12ca5d1d59ff230a3af721d542b4cb9e3fb3f07991"`
[INFO] [stdout] b7a53af8cbaa8e33f06e4a12ca5d1d59ff230a3af721d542b4cb9e3fb3f07991