[INFO] fetching crate numb_rs 0.0.3...
[INFO] testing numb_rs-0.0.3 against try#d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2 for pr-86479
[INFO] extracting crate numb_rs 0.0.3 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate numb_rs 0.0.3 on toolchain d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate numb_rs 0.0.3
[INFO] finished tweaking crates.io crate numb_rs 0.0.3
[INFO] tweaked toml for crates.io crate numb_rs 0.0.3 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 0b5b5214e84c4fc2c13e7b962c83e183148f907d9ca941019325f2cf25b40f9a
[INFO] running `Command { std: "docker" "start" "-a" "0b5b5214e84c4fc2c13e7b962c83e183148f907d9ca941019325f2cf25b40f9a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0b5b5214e84c4fc2c13e7b962c83e183148f907d9ca941019325f2cf25b40f9a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b5b5214e84c4fc2c13e7b962c83e183148f907d9ca941019325f2cf25b40f9a", kill_on_drop: false }`
[INFO] [stdout] 0b5b5214e84c4fc2c13e7b962c83e183148f907d9ca941019325f2cf25b40f9a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b8074eb931d0b40369e9027430be42a64e03c12ef3b84bf574a1b805c5028594
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "b8074eb931d0b40369e9027430be42a64e03c12ef3b84bf574a1b805c5028594", kill_on_drop: false }`
[INFO] [stderr]    Compiling numb_rs v0.0.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.95s
[INFO] running `Command { std: "docker" "inspect" "b8074eb931d0b40369e9027430be42a64e03c12ef3b84bf574a1b805c5028594", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b8074eb931d0b40369e9027430be42a64e03c12ef3b84bf574a1b805c5028594", kill_on_drop: false }`
[INFO] [stdout] b8074eb931d0b40369e9027430be42a64e03c12ef3b84bf574a1b805c5028594
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a1c8e633da9055065d2c3e97f208f79f3cd11cbf9c6d6649b9c9f2c4e64abae6
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "a1c8e633da9055065d2c3e97f208f79f3cd11cbf9c6d6649b9c9f2c4e64abae6", kill_on_drop: false }`
[INFO] [stderr]    Compiling numb_rs v0.0.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]     --> src/lib.rs:1089:9
[INFO] [stdout]      |
[INFO] [stdout] 1089 |         &a.assert_approx_eq(&b, 0.00005);
[INFO] [stdout]      |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 3.06s
[INFO] running `Command { std: "docker" "inspect" "a1c8e633da9055065d2c3e97f208f79f3cd11cbf9c6d6649b9c9f2c4e64abae6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a1c8e633da9055065d2c3e97f208f79f3cd11cbf9c6d6649b9c9f2c4e64abae6", kill_on_drop: false }`
[INFO] [stdout] a1c8e633da9055065d2c3e97f208f79f3cd11cbf9c6d6649b9c9f2c4e64abae6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 89de63b38adeee407cecb4d5cb583039ab640185c3d50b6ae03a697bfebcd4a5
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "89de63b38adeee407cecb4d5cb583039ab640185c3d50b6ae03a697bfebcd4a5", kill_on_drop: false }`
[INFO] [stderr] warning: unused borrow that must be used
[INFO] [stderr]     --> src/lib.rs:1089:9
[INFO] [stderr]      |
[INFO] [stderr] 1089 |         &a.assert_approx_eq(&b, 0.00005);
[INFO] [stderr]      |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]      |
[INFO] [stderr]      = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `numb_rs` (lib test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/numb_rs-89d3c3957996e4a4)
[INFO] [stdout] 
[INFO] [stdout] running 18 tests
[INFO] [stdout] test tests::approx_matrix_test ... ok
[INFO] [stdout] test tests::approx_test ... ok
[INFO] [stdout] test tests::iterators ... ok
[INFO] [stdout] test tests::matrix_print ... ok
[INFO] [stdout] test tests::ops::deref_test ... ok
[INFO] [stdout] test tests::ops::matrix_incompatibilities ... ok
[INFO] [stdout] test tests::ops::scalar_mul ... ok
[INFO] [stdout] test tests::sym_test ... ok
[INFO] [stdout] test tests::ops::matrix_mul ... ok
[INFO] [stdout] test tests::swap ... ok
[INFO] [stdout] test tests::t_view ... ok
[INFO] [stdout] test tests::test_matmacs ... ok
[INFO] [stdout] test tests::test_raw_matrix ... ok
[INFO] [stdout] test tests::t_view_index ... ok
[INFO] [stdout] test tests::ops::matrix_mul_symmetry ... ok
[INFO] [stdout] test tests::ops::matrix_mul_transpose ... ok
[INFO] [stdout] test tests::transpose ... ok
[INFO] [stderr]      Running tests/integration_tests.rs (/opt/rustwide/target/debug/deps/integration_tests-9d3cd2d74bcba30f)
[INFO] [stdout] test tests::approx_panic - should panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 18 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.05s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stderr]    Doc-tests numb_rs
[INFO] [stdout] test general_creation ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test src/lib.rs - mat (line 824) ... ok
[INFO] [stdout] test src/lib.rs - mat (line 841) ... ok
[INFO] [stdout] test src/lib.rs - mat (line 845) ... ok
[INFO] [stdout] test src/lib.rs - symmat (line 899) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.92s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "89de63b38adeee407cecb4d5cb583039ab640185c3d50b6ae03a697bfebcd4a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "89de63b38adeee407cecb4d5cb583039ab640185c3d50b6ae03a697bfebcd4a5", kill_on_drop: false }`
[INFO] [stdout] 89de63b38adeee407cecb4d5cb583039ab640185c3d50b6ae03a697bfebcd4a5