[INFO] fetching crate libmat 0.2.0...
[INFO] testing libmat-0.2.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate libmat 0.2.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate libmat 0.2.0 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate libmat 0.2.0
[INFO] finished tweaking crates.io crate libmat 0.2.0
[INFO] tweaked toml for crates.io crate libmat 0.2.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 02b64d9c18f64de98f5d576711d7b3d011467f8666d8176768daa5bf310b166b
[INFO] running `Command { std: "docker" "start" "-a" "02b64d9c18f64de98f5d576711d7b3d011467f8666d8176768daa5bf310b166b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "02b64d9c18f64de98f5d576711d7b3d011467f8666d8176768daa5bf310b166b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "02b64d9c18f64de98f5d576711d7b3d011467f8666d8176768daa5bf310b166b", kill_on_drop: false }`
[INFO] [stdout] 02b64d9c18f64de98f5d576711d7b3d011467f8666d8176768daa5bf310b166b
[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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6b17049ae53c676c87012c8027e75e840ec96b7acd1a6039efd29e77422f19bc
[INFO] running `Command { std: "docker" "start" "-a" "6b17049ae53c676c87012c8027e75e840ec96b7acd1a6039efd29e77422f19bc", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-bigint v0.4.2
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling num-rational v0.4.0
[INFO] [stderr]    Compiling num-complex v0.4.0
[INFO] [stderr]    Compiling num v0.4.0
[INFO] [stderr]    Compiling libmat v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.93s
[INFO] running `Command { std: "docker" "inspect" "6b17049ae53c676c87012c8027e75e840ec96b7acd1a6039efd29e77422f19bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b17049ae53c676c87012c8027e75e840ec96b7acd1a6039efd29e77422f19bc", kill_on_drop: false }`
[INFO] [stdout] 6b17049ae53c676c87012c8027e75e840ec96b7acd1a6039efd29e77422f19bc
[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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c6f90b5aaf5e93716372c200c3be4e1d5ec2980ff3c4c0fd39b346ce5ecb18e7
[INFO] running `Command { std: "docker" "start" "-a" "c6f90b5aaf5e93716372c200c3be4e1d5ec2980ff3c4c0fd39b346ce5ecb18e7", kill_on_drop: false }`
[INFO] [stderr]    Compiling libmat v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.14s
[INFO] running `Command { std: "docker" "inspect" "c6f90b5aaf5e93716372c200c3be4e1d5ec2980ff3c4c0fd39b346ce5ecb18e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c6f90b5aaf5e93716372c200c3be4e1d5ec2980ff3c4c0fd39b346ce5ecb18e7", kill_on_drop: false }`
[INFO] [stdout] c6f90b5aaf5e93716372c200c3be4e1d5ec2980ff3c4c0fd39b346ce5ecb18e7
[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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 6cc5930abeed1bc88ad12fb2d1aba93ffff6a21b48c16a252643ed3f42070756
[INFO] running `Command { std: "docker" "start" "-a" "6cc5930abeed1bc88ad12fb2d1aba93ffff6a21b48c16a252643ed3f42070756", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/libmat-d6d61b581901369b)
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/determinant.rs (/opt/rustwide/target/debug/deps/determinant-e905c92abec38fcc)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test null_mat ... ok
[INFO] [stdout] test some_dets ... ok
[INFO] [stdout] test not_square - should panic ... ok
[INFO] [stdout] test id_mat ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.16s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/indexing.rs (/opt/rustwide/target/debug/deps/indexing-75987e087dce29f9)
[INFO] [stdout] 
[INFO] [stderr]      Running tests/macros.rs (/opt/rustwide/target/debug/deps/macros-1202f3c678f533c5)
[INFO] [stdout] running 2 tests
[INFO] [stdout] test double_idx ... ok
[INFO] [stdout] test one_idx ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stderr]      Running tests/simple_tests.rs (/opt/rustwide/target/debug/deps/simple_tests-c45c8e655631496b)
[INFO] [stdout] test matrix_macro ... ok
[INFO] [stdout] test vector_macro ... ok
[INFO] [stdout] test wolfram_alpha_syntax ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test identity ... ok
[INFO] [stdout] test add ... ok
[INFO] [stdout] test sub ... ok
[INFO] [stdout] test construct ... ok
[INFO] [stdout] test multiply ... ok
[INFO] [stdout] test scale ... ok
[INFO] [stdout] test invalid_mul - should panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests libmat
[INFO] [stdout] 
[INFO] [stdout] running 30 tests
[INFO] [stdout] test src/mat/vec/vec_ops.rs - mat::vec::vec_ops::&'_ Vector<T> (line 53) ... ok
[INFO] [stdout] test src/mat/_mat/mat_impl.rs - mat::_mat::mat_impl::Matrix<T>::new (line 21) ... ok
[INFO] [stdout] test src/mat/_mat/mat_ops.rs - mat::_mat::mat_ops::&'_ Matrix<T> (line 80) ... ok
[INFO] [stdout] test src/mat/smat/smat_impl.rs - mat::smat::smat_impl::SMatrix<T, M, N>::transpose (line 58) ... ok
[INFO] [stdout] test src/mat/_mat/mat_ops.rs - mat::_mat::mat_ops::&'_ Matrix<T> (line 178) ... ok
[INFO] [stdout] test src/mat/_mat/mat_ops.rs - mat::_mat::mat_ops::&'_ Matrix<T> (line 8) ... ok
[INFO] [stdout] test src/mat/_mat/mat_impl.rs - mat::_mat::mat_impl::Matrix<T>::one (line 103) ... ok
[INFO] [stdout] test src/mat/smat/smat_impl.rs - mat::smat::smat_impl::SMatrix<T, M, N>::new (line 16) ... ok
[INFO] [stdout] test src/mat/_mat/mat_ops.rs - mat::_mat::mat_ops::Matrix<T> (line 250) ... ok
[INFO] [stdout] test src/mat/_mat/mat_ops.rs - mat::_mat::mat_ops::&'_ Matrix<T> (line 152) ... ok
[INFO] [stdout] test src/mat/vec/vec_ops.rs - mat::vec::vec_ops::&'_ Vector<T> (line 126) ... ok
[INFO] [stdout] test src/mat/vec/vec_ops.rs - mat::vec::vec_ops::Vector<T> (line 198) ... ok
[INFO] [stdout] test src/mat/_mat/mat_ops.rs - mat::_mat::mat_ops::&'_ Matrix<T> (line 110) ... ok
[INFO] [stdout] test src/mat.rs - mat::SMatrix (line 28) ... ok
[INFO] [stdout] test src/mat/_mat/mat_impl.rs - mat::_mat::mat_impl::Matrix<T>::transpose (line 290) ... ok
[INFO] [stdout] test src/mat/vec/vec_ops.rs - mat::vec::vec_ops::&'_ Vector<T> (line 10) ... ok
[INFO] [stdout] test src/mat/_mat/mat_ops.rs - mat::_mat::mat_ops::&'_ Matrix<T> (line 204) ... ok
[INFO] [stdout] test src/mat/vec/vec_ops.rs - mat::vec::vec_ops::Vector<T> (line 218) ... ok
[INFO] [stdout] test src/mat/_mat/mat_impl.rs - mat::_mat::mat_impl::Matrix<T>::is_square (line 275) ... ok
[INFO] [stdout] test src/mat/_mat/mat_impl.rs - mat::_mat::mat_impl::Matrix<T>::diag (line 148) ... ok
[INFO] [stdout] test src/mat/_mat/mat_ops.rs - mat::_mat::mat_ops::Matrix<T> (line 227) ... ok
[INFO] [stdout] test src/lib.rs - (line 5) ... ok
[INFO] [stdout] test src/mat/_mat/mat_impl.rs - mat::_mat::mat_impl::Matrix<T>::det (line 242) ... ok
[INFO] [stdout] test src/mat/_mat/mat_ops.rs - mat::_mat::mat_ops::&'_ Matrix<T> (line 48) ... ok
[INFO] [stdout] test src/mat/_mat/mat_traits.rs - mat::_mat::mat_traits::Matrix<T>::inv (line 39) ... ok
[INFO] [stdout] test src/mat/vec/vec_ops.rs - mat::vec::vec_ops::&'_ Vector<T> (line 96) ... ok
[INFO] [stdout] test src/mat/_mat/mat_impl.rs - mat::_mat::mat_impl::Matrix<T>::from_vec (line 48) ... ok
[INFO] [stdout] test src/mat/_mat/mat_impl.rs - mat::_mat::mat_impl::Matrix<T>::zero (line 130) ... ok
[INFO] [stdout] test src/mat/vec/vec_ops.rs - mat::vec::vec_ops::&'_ Vector<T> (line 154) ... ok
[INFO] [stdout] test src/mat/vec/vec_ops.rs - mat::vec::vec_ops::&'_ Vector<T> (line 178) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 30 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 2.66s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "6cc5930abeed1bc88ad12fb2d1aba93ffff6a21b48c16a252643ed3f42070756", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6cc5930abeed1bc88ad12fb2d1aba93ffff6a21b48c16a252643ed3f42070756", kill_on_drop: false }`
[INFO] [stdout] 6cc5930abeed1bc88ad12fb2d1aba93ffff6a21b48c16a252643ed3f42070756