[INFO] fetching crate waifu 0.1.0...
[INFO] crate waifu 0.1.0 is already in cache
[INFO] crate waifu 0.1.0 is already in cache
[INFO] crate waifu 0.1.0 is already in cache
[INFO] crate waifu 0.1.0 is already in cache
[INFO] crate waifu 0.1.0 is already in cache
[INFO] crate waifu 0.1.0 is already in cache
[INFO] crate waifu 0.1.0 is already in cache
[INFO] crate waifu 0.1.0 is already in cache
[INFO] crate waifu 0.1.0 is already in cache
[INFO] crate waifu 0.1.0 is already in cache
[INFO] crate waifu 0.1.0 is already in cache
[INFO] crate waifu 0.1.0 is already in cache
[INFO] crate waifu 0.1.0 is already in cache
[INFO] crate waifu 0.1.0 is already in cache
[INFO] checking waifu-0.1.0 against master#7308c22c6a8d77e82187e290e1f7459870e48d12 for pr-99447
[INFO] extracting crate waifu 0.1.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate waifu 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 waifu 0.1.0
[INFO] finished tweaking crates.io crate waifu 0.1.0
[INFO] tweaked toml for crates.io crate waifu 0.1.0 written to /workspace/builds/worker-7/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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ansi_term v0.9.0
[INFO] [stderr]   Downloaded difference v1.0.0
[INFO] [stderr]   Downloaded pretty_assertions v0.3.4
[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] d1256eb5a1feea4f2d2b9a69ad23a1d67859ffb534f573992333080947ed163c
[INFO] running `Command { std: "docker" "start" "-a" "d1256eb5a1feea4f2d2b9a69ad23a1d67859ffb534f573992333080947ed163c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d1256eb5a1feea4f2d2b9a69ad23a1d67859ffb534f573992333080947ed163c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d1256eb5a1feea4f2d2b9a69ad23a1d67859ffb534f573992333080947ed163c", kill_on_drop: false }`
[INFO] [stdout] d1256eb5a1feea4f2d2b9a69ad23a1d67859ffb534f573992333080947ed163c
[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] aec0de9a83eea5761bd9fabc5069c22ace9854f7981430d1d6ebeb36acef5fd4
[INFO] running `Command { std: "docker" "start" "-a" "aec0de9a83eea5761bd9fabc5069c22ace9854f7981430d1d6ebeb36acef5fd4", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]     Checking rawpointer v0.2.1
[INFO] [stderr]     Checking difference v1.0.0
[INFO] [stderr]     Checking ansi_term v0.9.0
[INFO] [stderr]     Checking waifu v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/solvers/state2.rs:150:6
[INFO] [stdout]     |
[INFO] [stdout] 150 |     };
[INFO] [stdout]     |      ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/solvers/state2.rs:162:6
[INFO] [stdout]     |
[INFO] [stdout] 162 |     };
[INFO] [stdout]     |      ^ help: remove this semicolon
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `solve` is never used
[INFO] [stdout]   --> src/solvers/state2.rs:89:8
[INFO] [stdout]    |
[INFO] [stdout] 89 | pub fn solve(level: &StructLevel) -> Option<Vec<(usize, usize)>> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `gauss_jordan_zf2` is never used
[INFO] [stdout]    --> src/solvers/state2.rs:125:4
[INFO] [stdout]     |
[INFO] [stdout] 125 | fn gauss_jordan_zf2(mat: Vec<Vec<usize>>, expected: Vec<usize>) -> Option<Vec<usize>> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking matrixmultiply v0.3.2
[INFO] [stderr]     Checking pretty_assertions v0.3.4
[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] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/solvers/state2.rs:150:6
[INFO] [stdout]     |
[INFO] [stdout] 150 |     };
[INFO] [stdout]     |      ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/solvers/state2.rs:162:6
[INFO] [stdout]     |
[INFO] [stdout] 162 |     };
[INFO] [stdout]     |      ^ help: remove this semicolon
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.47s
[INFO] running `Command { std: "docker" "inspect" "aec0de9a83eea5761bd9fabc5069c22ace9854f7981430d1d6ebeb36acef5fd4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aec0de9a83eea5761bd9fabc5069c22ace9854f7981430d1d6ebeb36acef5fd4", kill_on_drop: false }`
[INFO] [stdout] aec0de9a83eea5761bd9fabc5069c22ace9854f7981430d1d6ebeb36acef5fd4