[INFO] fetching crate neumann 0.1.0...
[INFO] crate neumann 0.1.0 is already in cache
[INFO] crate neumann 0.1.0 is already in cache
[INFO] crate neumann 0.1.0 is already in cache
[INFO] crate neumann 0.1.0 is already in cache
[INFO] crate neumann 0.1.0 is already in cache
[INFO] crate neumann 0.1.0 is already in cache
[INFO] crate neumann 0.1.0 is already in cache
[INFO] crate neumann 0.1.0 is already in cache
[INFO] crate neumann 0.1.0 is already in cache
[INFO] crate neumann 0.1.0 is already in cache
[INFO] crate neumann 0.1.0 is already in cache
[INFO] crate neumann 0.1.0 is already in cache
[INFO] crate neumann 0.1.0 is already in cache
[INFO] crate neumann 0.1.0 is already in cache
[INFO] checking neumann-0.1.0 against master#7308c22c6a8d77e82187e290e1f7459870e48d12 for pr-99447
[INFO] extracting crate neumann 0.1.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate neumann 0.1.0 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 neumann 0.1.0
[INFO] finished tweaking crates.io crate neumann 0.1.0
[INFO] tweaked toml for crates.io crate neumann 0.1.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate crates.io crate neumann 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7308c22c6a8d77e82187e290e1f7459870e48d12" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded test-case v1.0.0
[INFO] [stderr]   Downloaded matrixmultiply v0.2.3
[INFO] [stderr]   Downloaded getset v0.1.1
[INFO] [stderr]   Downloaded num-rational v0.3.0
[INFO] [stderr]   Downloaded polynomials v0.2.4
[INFO] [stderr]   Downloaded num-bigint v0.3.0
[INFO] [stderr]   Downloaded minilp v0.2.2
[INFO] [stderr]   Downloaded sprs v0.7.1
[INFO] [stderr]   Downloaded average v0.10.6
[INFO] [stderr]   Downloaded preexplorer v0.3.3
[INFO] [stderr]   Downloaded fasteval v0.2.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] 69d8eda557fcb655fb02d44021157f026beaaaa5e25cc51e88e9dae790d4bbb0
[INFO] running `Command { std: "docker" "start" "-a" "69d8eda557fcb655fb02d44021157f026beaaaa5e25cc51e88e9dae790d4bbb0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "69d8eda557fcb655fb02d44021157f026beaaaa5e25cc51e88e9dae790d4bbb0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "69d8eda557fcb655fb02d44021157f026beaaaa5e25cc51e88e9dae790d4bbb0", kill_on_drop: false }`
[INFO] [stdout] 69d8eda557fcb655fb02d44021157f026beaaaa5e25cc51e88e9dae790d4bbb0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] f919af1415314d81a1982d6c93359d946e64e1185f6c32ec12f5f6b5d58190aa
[INFO] running `Command { std: "docker" "start" "-a" "f919af1415314d81a1982d6c93359d946e64e1185f6c32ec12f5f6b5d58190aa", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.45
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]     Checking rawpointer v0.2.1
[INFO] [stderr]    Compiling ndarray v0.13.1
[INFO] [stderr]    Compiling libc v0.2.79
[INFO] [stderr]    Compiling serde_derive v1.0.117
[INFO] [stderr]    Compiling serde v1.0.117
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking custom_derive v0.1.7
[INFO] [stderr]     Checking float-ord v0.2.0
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking fasteval v0.2.4
[INFO] [stderr]     Checking matrixmultiply v0.2.3
[INFO] [stderr]     Checking conv v0.3.3
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling num-bigint v0.3.0
[INFO] [stderr]    Compiling num-rational v0.3.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling test-case v1.0.0
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking average v0.10.6
[INFO] [stderr]     Checking approx v0.3.2
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking sprs v0.7.1
[INFO] [stderr]     Checking minilp v0.2.2
[INFO] [stderr]    Compiling thiserror-impl v1.0.21
[INFO] [stderr]    Compiling getset v0.1.1
[INFO] [stderr]     Checking thiserror v1.0.21
[INFO] [stderr]     Checking preexplorer v0.3.3
[INFO] [stderr]     Checking polynomials v0.2.4
[INFO] [stderr]     Checking neumann v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `from` that must be used
[INFO] [stdout]    --> src/matrix_game/polynomial.rs:443:9
[INFO] [stdout]     |
[INFO] [stdout] 443 |         PolyMatrixGame::from(poly_matrix);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `from` that must be used
[INFO] [stdout]    --> src/matrix_game.rs:531:9
[INFO] [stdout]     |
[INFO] [stdout] 531 |         MatrixGame::from(matrix);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 25.52s
[INFO] running `Command { std: "docker" "inspect" "f919af1415314d81a1982d6c93359d946e64e1185f6c32ec12f5f6b5d58190aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f919af1415314d81a1982d6c93359d946e64e1185f6c32ec12f5f6b5d58190aa", kill_on_drop: false }`
[INFO] [stdout] f919af1415314d81a1982d6c93359d946e64e1185f6c32ec12f5f6b5d58190aa