[INFO] updating cached repository https://github.com/ahouts/math166-assignment2
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 4a89187ef91f6b75d3c9e649207e8b1b98a8efbc
[INFO] testing ahouts/math166-assignment2 against 1.44.0 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fahouts%2Fmath166-assignment2" "/workspace/builds/worker-0/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ahouts/math166-assignment2 on toolchain 1.44.0
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/ahouts/math166-assignment2
[INFO] finished tweaking git repo https://github.com/ahouts/math166-assignment2
[INFO] tweaked toml for git repo https://github.com/ahouts/math166-assignment2 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/ahouts/math166-assignment2 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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=warn" "-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" "+1.44.0" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 3c950c17a3ed1a559dc0f4f457cdff58b6c835624320b4fa5a8bef28e88e496b
[INFO] running `"docker" "start" "-a" "3c950c17a3ed1a559dc0f4f457cdff58b6c835624320b4fa5a8bef28e88e496b"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling rand_core v0.4.0
[INFO] [stderr]    Compiling autocfg v0.1.2
[INFO] [stderr]    Compiling libc v0.2.50
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling rand_jitter v0.1.3
[INFO] [stderr]    Compiling rand_hc v0.1.0
[INFO] [stderr]    Compiling rand_xorshift v0.1.1
[INFO] [stderr]    Compiling rand_isaac v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling math166-assignment2 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: struct is never constructed: `ReverseSub`
[INFO] [stderr]   --> src/mat_eqn_solver.rs:13:12
[INFO] [stderr]    |
[INFO] [stderr] 13 | pub struct ReverseSub<T: UpperTriangle> {
[INFO] [stderr]    |            ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.88s
[INFO] running `"docker" "inspect" "3c950c17a3ed1a559dc0f4f457cdff58b6c835624320b4fa5a8bef28e88e496b"`
[INFO] running `"docker" "rm" "-f" "3c950c17a3ed1a559dc0f4f457cdff58b6c835624320b4fa5a8bef28e88e496b"`
[INFO] [stdout] 3c950c17a3ed1a559dc0f4f457cdff58b6c835624320b4fa5a8bef28e88e496b
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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=warn" "-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" "+1.44.0" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] aea7ef8135c4b0326e4ef3d94d4f8371da3c31e2ce8c6917494e01b446d406f9
[INFO] running `"docker" "start" "-a" "aea7ef8135c4b0326e4ef3d94d4f8371da3c31e2ce8c6917494e01b446d406f9"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling math166-assignment2 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: struct is never constructed: `ReverseSub`
[INFO] [stderr]   --> src/mat_eqn_solver.rs:13:12
[INFO] [stderr]    |
[INFO] [stderr] 13 | pub struct ReverseSub<T: UpperTriangle> {
[INFO] [stderr]    |            ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.17s
[INFO] running `"docker" "inspect" "aea7ef8135c4b0326e4ef3d94d4f8371da3c31e2ce8c6917494e01b446d406f9"`
[INFO] running `"docker" "rm" "-f" "aea7ef8135c4b0326e4ef3d94d4f8371da3c31e2ce8c6917494e01b446d406f9"`
[INFO] [stdout] aea7ef8135c4b0326e4ef3d94d4f8371da3c31e2ce8c6917494e01b446d406f9
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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=warn" "-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" "+1.44.0" "test" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 187fd717ea78e5b0d9904e0d989e0fe9c4c6140ce45e79a910843dbb08037fb8
[INFO] running `"docker" "start" "-a" "187fd717ea78e5b0d9904e0d989e0fe9c4c6140ce45e79a910843dbb08037fb8"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr] warning: struct is never constructed: `ReverseSub`
[INFO] [stderr]   --> src/mat_eqn_solver.rs:13:12
[INFO] [stderr]    |
[INFO] [stderr] 13 | pub struct ReverseSub<T: UpperTriangle> {
[INFO] [stderr]    |            ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.09s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/math166_assignment2-dfd34c65fcb96a45
[INFO] [stdout] 
[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" "187fd717ea78e5b0d9904e0d989e0fe9c4c6140ce45e79a910843dbb08037fb8"`
[INFO] running `"docker" "rm" "-f" "187fd717ea78e5b0d9904e0d989e0fe9c4c6140ce45e79a910843dbb08037fb8"`
[INFO] [stdout] 187fd717ea78e5b0d9904e0d989e0fe9c4c6140ce45e79a910843dbb08037fb8