[INFO] fetching crate simplex_method 0.1.3...
[INFO] crate simplex_method 0.1.3 is already in cache
[INFO] crate simplex_method 0.1.3 is already in cache
[INFO] crate simplex_method 0.1.3 is already in cache
[INFO] crate simplex_method 0.1.3 is already in cache
[INFO] crate simplex_method 0.1.3 is already in cache
[INFO] crate simplex_method 0.1.3 is already in cache
[INFO] crate simplex_method 0.1.3 is already in cache
[INFO] crate simplex_method 0.1.3 is already in cache
[INFO] crate simplex_method 0.1.3 is already in cache
[INFO] crate simplex_method 0.1.3 is already in cache
[INFO] crate simplex_method 0.1.3 is already in cache
[INFO] crate simplex_method 0.1.3 is already in cache
[INFO] crate simplex_method 0.1.3 is already in cache
[INFO] crate simplex_method 0.1.3 is already in cache
[INFO] checking simplex_method-0.1.3 against master#7308c22c6a8d77e82187e290e1f7459870e48d12 for pr-99447
[INFO] extracting crate simplex_method 0.1.3 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate simplex_method 0.1.3 on toolchain 7308c22c6a8d77e82187e290e1f7459870e48d12
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7308c22c6a8d77e82187e290e1f7459870e48d12" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate simplex_method 0.1.3
[INFO] finished tweaking crates.io crate simplex_method 0.1.3
[INFO] tweaked toml for crates.io crate simplex_method 0.1.3 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7308c22c6a8d77e82187e290e1f7459870e48d12" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7308c22c6a8d77e82187e290e1f7459870e48d12" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:824c28ce115f6b999260af6986f3384c158e782489540e41c0b698ca1d9fd927" "/opt/rustwide/cargo-home/bin/cargo" "+7308c22c6a8d77e82187e290e1f7459870e48d12" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fbee7d3397c96459acdce5cb492afdc0c344eb9d60245c0467aac9cb7673c65e
[INFO] running `Command { std: "docker" "start" "-a" "fbee7d3397c96459acdce5cb492afdc0c344eb9d60245c0467aac9cb7673c65e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fbee7d3397c96459acdce5cb492afdc0c344eb9d60245c0467aac9cb7673c65e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fbee7d3397c96459acdce5cb492afdc0c344eb9d60245c0467aac9cb7673c65e", kill_on_drop: false }`
[INFO] [stdout] fbee7d3397c96459acdce5cb492afdc0c344eb9d60245c0467aac9cb7673c65e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:824c28ce115f6b999260af6986f3384c158e782489540e41c0b698ca1d9fd927" "/opt/rustwide/cargo-home/bin/cargo" "+7308c22c6a8d77e82187e290e1f7459870e48d12" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c3d6ce0656812f1c05244f9352cb36a6f8851b057ee2bb7602dab8240310fab3
[INFO] running `Command { std: "docker" "start" "-a" "c3d6ce0656812f1c05244f9352cb36a6f8851b057ee2bb7602dab8240310fab3", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]     Checking rawpointer v0.2.1
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking matrixmultiply v0.3.2
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]     Checking num-complex v0.4.2
[INFO] [stderr]     Checking ndarray v0.15.6
[INFO] [stderr]     Checking simplex_method v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/lib.rs:60:9
[INFO] [stdout]    |
[INFO] [stdout] 60 |         constr_coeff.push_row(ArrayView1::from(&func_coeff));
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/lib.rs:60:9
[INFO] [stdout]    |
[INFO] [stdout] 60 |         constr_coeff.push_row(ArrayView1::from(&func_coeff));
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.62s
[INFO] running `Command { std: "docker" "inspect" "c3d6ce0656812f1c05244f9352cb36a6f8851b057ee2bb7602dab8240310fab3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c3d6ce0656812f1c05244f9352cb36a6f8851b057ee2bb7602dab8240310fab3", kill_on_drop: false }`
[INFO] [stdout] c3d6ce0656812f1c05244f9352cb36a6f8851b057ee2bb7602dab8240310fab3