[INFO] fetching crate simplex 1.0.0...
[INFO] testing simplex-1.0.0 against 1.69.0 for beta-1.70-1
[INFO] extracting crate simplex 1.0.0 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate simplex 1.0.0 on toolchain 1.69.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.69.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate simplex 1.0.0
[INFO] finished tweaking crates.io crate simplex 1.0.0
[INFO] tweaked toml for crates.io crate simplex 1.0.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" __CARGO_TEST_CHANNEL_OVERRIDE_DO_NOT_USE_THIS="nightly" "/workspace/cargo-home/bin/cargo" "+1.69.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.69.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ca705b3d020e341b443d1f6436c3212f9cdc1f511eb3822ad37200f018fdf9dc
[INFO] running `Command { std: "docker" "start" "-a" "ca705b3d020e341b443d1f6436c3212f9cdc1f511eb3822ad37200f018fdf9dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ca705b3d020e341b443d1f6436c3212f9cdc1f511eb3822ad37200f018fdf9dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ca705b3d020e341b443d1f6436c3212f9cdc1f511eb3822ad37200f018fdf9dc", kill_on_drop: false }`
[INFO] [stdout] ca705b3d020e341b443d1f6436c3212f9cdc1f511eb3822ad37200f018fdf9dc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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" "RUSTDOCFLAGS=--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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3cea0f00da4dfdfdd5e1e38ac37ce5dd85784e1092b194a36cccec9b52ab6510
[INFO] running `Command { std: "docker" "start" "-a" "3cea0f00da4dfdfdd5e1e38ac37ce5dd85784e1092b194a36cccec9b52ab6510", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling rawpointer v0.2.1
[INFO] [stderr]    Compiling ndarray v0.13.1
[INFO] [stderr]    Compiling matrixmultiply v0.2.4
[INFO] [stderr]    Compiling simplex v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.19s
[INFO] running `Command { std: "docker" "inspect" "3cea0f00da4dfdfdd5e1e38ac37ce5dd85784e1092b194a36cccec9b52ab6510", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3cea0f00da4dfdfdd5e1e38ac37ce5dd85784e1092b194a36cccec9b52ab6510", kill_on_drop: false }`
[INFO] [stdout] 3cea0f00da4dfdfdd5e1e38ac37ce5dd85784e1092b194a36cccec9b52ab6510
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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" "RUSTDOCFLAGS=--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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d13a6f765b956369138b40785f382d558295ec379d505406be9313f53661dd7d
[INFO] running `Command { std: "docker" "start" "-a" "d13a6f765b956369138b40785f382d558295ec379d505406be9313f53661dd7d", kill_on_drop: false }`
[INFO] [stderr]    Compiling simplex v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.27s
[INFO] running `Command { std: "docker" "inspect" "d13a6f765b956369138b40785f382d558295ec379d505406be9313f53661dd7d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d13a6f765b956369138b40785f382d558295ec379d505406be9313f53661dd7d", kill_on_drop: false }`
[INFO] [stdout] d13a6f765b956369138b40785f382d558295ec379d505406be9313f53661dd7d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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" "RUSTDOCFLAGS=--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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 2a56f2a3fc75ecb559b87b13defd55a1440adfeb5b4ae498d15b7257abbabe2e
[INFO] running `Command { std: "docker" "start" "-a" "2a56f2a3fc75ecb559b87b13defd55a1440adfeb5b4ae498d15b7257abbabe2e", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/simplex-8559d5197aaf2a15)
[INFO] [stdout] 
[INFO] [stdout] running 15 tests
[INFO] [stdout] test test::build_simplex_table_2 ... ok
[INFO] [stdout] test test::get_exit_var_2 ... ok
[INFO] [stdout] test test::get_exit_var_1 ... ok
[INFO] [stdout] test test::solve_example_1 ... ok
[INFO] [stdout] test test::build_simplex_table_1 ... ok
[INFO] [stdout] test test::get_entry_var_2 ... ok
[INFO] [stdout] test test::get_entry_var_3 ... ok
[INFO] [stdout] test test::get_exit_var_3 ... ok
[INFO] [stdout] test test::solve_example_2 ... ok
[INFO] [stdout] test test::get_entry_var_1 ... ok
[INFO] [stdout] test test::solve_example_3 ... ok
[INFO] [stdout] test test::solve_example_5 ... ok
[INFO] [stdout] test test::step_example_1 ... ok
[INFO] [stdout] test test::build_simplex_table_3 ... ok
[INFO] [stdout] test test::solve_example_4 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 15 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests simplex
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test src/lib.rs - SimplexTable::get_var (line 201) ... FAILED
[INFO] [stdout] test src/lib.rs - SimplexMinimizerBuilder::with (line 246) ... FAILED
[INFO] [stdout] test src/lib.rs - Simplex (line 333) ... FAILED
[INFO] [stdout] test src/lib.rs - SimplexMinimizerBuilder::with (line 237) ... FAILED
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] [stdout] test src/lib.rs - SimplexTable::solve (line 143) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - SimplexTable::get_var (line 201) stdout ----
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Simplex`
[INFO] [stdout]  --> src/lib.rs:202:15
[INFO] [stdout]   |
[INFO] [stdout] 4 | let program = Simplex::minimize(&vec![-3.0, 1.0, -2.0])
[INFO] [stdout]   |               ^^^^^^^ use of undeclared type `Simplex`
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]   |
[INFO] [stdout] 2 | use simplex::Simplex;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `SimplexConstraint`
[INFO] [stdout]  --> src/lib.rs:204:8
[INFO] [stdout]   |
[INFO] [stdout] 6 |        SimplexConstraint::LessThan(vec![2.0, -2.0, 3.0], 5.0),
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^ use of undeclared type `SimplexConstraint`
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing this enum
[INFO] [stdout]   |
[INFO] [stdout] 2 | use simplex::SimplexConstraint;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `SimplexConstraint`
[INFO] [stdout]  --> src/lib.rs:205:8
[INFO] [stdout]   |
[INFO] [stdout] 7 |        SimplexConstraint::LessThan(vec![1.0, 1.0, -1.0], 3.0),
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^ use of undeclared type `SimplexConstraint`
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing this enum
[INFO] [stdout]   |
[INFO] [stdout] 2 | use simplex::SimplexConstraint;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `SimplexConstraint`
[INFO] [stdout]  --> src/lib.rs:206:8
[INFO] [stdout]   |
[INFO] [stdout] 8 |        SimplexConstraint::LessThan(vec![1.0, -1.0, 1.0], 2.0),
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^ use of undeclared type `SimplexConstraint`
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing this enum
[INFO] [stdout]   |
[INFO] [stdout] 2 | use simplex::SimplexConstraint;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `SimplexOutput`
[INFO] [stdout]   --> src/lib.rs:209:32
[INFO] [stdout]    |
[INFO] [stdout] 11 |    assert_eq!(simplex.solve(), SimplexOutput::MultipleOptimum(-8.0));
[INFO] [stdout]    |                                ^^^^^^^^^^^^^ use of undeclared type `SimplexOutput`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this enum
[INFO] [stdout]    |
[INFO] [stdout] 2  | use simplex::SimplexOutput;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 5 previous errors
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - SimplexMinimizerBuilder::with (line 246) stdout ----
[INFO] [stdout] error: expected one of `!`, `.`, `::`, `;`, `?`, `{`, `}`, or an operator, found `z`
[INFO] [stdout]  --> src/lib.rs:247:10
[INFO] [stdout]   |
[INFO] [stdout] 3 | minimize z = x - 2y
[INFO] [stdout]   |          ^ expected one of 8 possible tokens
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - Simplex (line 333) stdout ----
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Simplex`
[INFO] [stdout]  --> src/lib.rs:334:19
[INFO] [stdout]   |
[INFO] [stdout] 3 | let mut problem = Simplex::minimize(&vec![5.0, -6.0]);
[INFO] [stdout]   |                   ^^^^^^^ use of undeclared type `Simplex`
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]   |
[INFO] [stdout] 2 | use simplex::Simplex;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - SimplexMinimizerBuilder::with (line 237) stdout ----
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Simplex`
[INFO] [stdout]  --> src/lib.rs:238:19
[INFO] [stdout]   |
[INFO] [stdout] 4 | let mut simplex = Simplex::minimize(&vec![1.0, -2.0])
[INFO] [stdout]   |                   ^^^^^^^ use of undeclared type `Simplex`
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]   |
[INFO] [stdout] 2 | use simplex::Simplex;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `SimplexConstraint`
[INFO] [stdout]  --> src/lib.rs:240:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     SimplexConstraint::GreaterThan(vec![1.0, 1.0], 2.0),
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^ use of undeclared type `SimplexConstraint`
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing this enum
[INFO] [stdout]   |
[INFO] [stdout] 2 | use simplex::SimplexConstraint;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `SimplexConstraint`
[INFO] [stdout]  --> src/lib.rs:241:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     SimplexConstraint::GreaterThan(vec![-1.0, 1.0], 1.0),
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^ use of undeclared type `SimplexConstraint`
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing this enum
[INFO] [stdout]   |
[INFO] [stdout] 2 | use simplex::SimplexConstraint;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `SimplexConstraint`
[INFO] [stdout]  --> src/lib.rs:242:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     SimplexConstraint::LessThan(vec![0.0, 1.0], 3.0),
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^ use of undeclared type `SimplexConstraint`
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing this enum
[INFO] [stdout]   |
[INFO] [stdout] 2 | use simplex::SimplexConstraint;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - SimplexTable::solve (line 143) stdout ----
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Simplex`
[INFO] [stdout]  --> src/lib.rs:144:15
[INFO] [stdout]   |
[INFO] [stdout] 4 | let program = Simplex::minimize(&vec![-3.0, 1.0, -2.0])
[INFO] [stdout]   |               ^^^^^^^ use of undeclared type `Simplex`
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]   |
[INFO] [stdout] 2 | use simplex::Simplex;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `SimplexConstraint`
[INFO] [stdout]  --> src/lib.rs:146:8
[INFO] [stdout]   |
[INFO] [stdout] 6 |        SimplexConstraint::LessThan(vec![2.0, -2.0, 3.0], 5.0),
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^ use of undeclared type `SimplexConstraint`
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing this enum
[INFO] [stdout]   |
[INFO] [stdout] 2 | use simplex::SimplexConstraint;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `SimplexConstraint`
[INFO] [stdout]  --> src/lib.rs:147:8
[INFO] [stdout]   |
[INFO] [stdout] 7 |        SimplexConstraint::LessThan(vec![1.0, 1.0, -1.0], 3.0),
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^ use of undeclared type `SimplexConstraint`
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing this enum
[INFO] [stdout]   |
[INFO] [stdout] 2 | use simplex::SimplexConstraint;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `SimplexConstraint`
[INFO] [stdout]  --> src/lib.rs:148:8
[INFO] [stdout]   |
[INFO] [stdout] 8 |        SimplexConstraint::LessThan(vec![1.0, -1.0, 1.0], 2.0),
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^ use of undeclared type `SimplexConstraint`
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing this enum
[INFO] [stdout]   |
[INFO] [stdout] 2 | use simplex::SimplexConstraint;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `SimplexOutput`
[INFO] [stdout]   --> src/lib.rs:151:32
[INFO] [stdout]    |
[INFO] [stdout] 11 |    assert_eq!(simplex.solve(), SimplexOutput::MultipleOptimum(-8.0));
[INFO] [stdout]    |                                ^^^^^^^^^^^^^ use of undeclared type `SimplexOutput`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this enum
[INFO] [stdout]    |
[INFO] [stdout] 2  | use simplex::SimplexOutput;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 5 previous errors
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - Simplex (line 333)
[INFO] [stdout]     src/lib.rs - SimplexMinimizerBuilder::with (line 237)
[INFO] [stdout]     src/lib.rs - SimplexMinimizerBuilder::with (line 246)
[INFO] [stdout]     src/lib.rs - SimplexTable::get_var (line 201)
[INFO] [stdout]     src/lib.rs - SimplexTable::solve (line 143)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 5 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.18s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "2a56f2a3fc75ecb559b87b13defd55a1440adfeb5b4ae498d15b7257abbabe2e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2a56f2a3fc75ecb559b87b13defd55a1440adfeb5b4ae498d15b7257abbabe2e", kill_on_drop: false }`
[INFO] [stdout] 2a56f2a3fc75ecb559b87b13defd55a1440adfeb5b4ae498d15b7257abbabe2e
