[INFO] fetching crate prophet 0.4.2...
[INFO] testing prophet-0.4.2 against try#d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2 for pr-86479
[INFO] extracting crate prophet 0.4.2 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate prophet 0.4.2 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 prophet 0.4.2
[INFO] finished tweaking crates.io crate prophet 0.4.2
[INFO] tweaked toml for crates.io crate prophet 0.4.2 written to /workspace/builds/worker-1/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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded num-iter v0.1.42
[INFO] [stderr]   Downloaded rawpointer v0.1.0
[INFO] [stderr]   Downloaded approx v0.1.1
[INFO] [stderr]   Downloaded matrixmultiply v0.1.15
[INFO] [stderr]   Downloaded num-traits v0.1.43
[INFO] [stderr]   Downloaded ndarray v0.10.14
[INFO] [stderr]   Downloaded num-bigint v0.1.44
[INFO] [stderr]   Downloaded num-complex v0.1.43
[INFO] [stderr]   Downloaded num-rational v0.1.42
[INFO] [stderr]   Downloaded num v0.1.42
[INFO] [stderr]   Downloaded rustc-serialize v0.3.24
[INFO] [stderr]   Downloaded ndarray-rand v0.6.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] [stdout] e7c54515524ad3ab395223fb61aff805ab6839e78535a715eba12dbcdd7bf04e
[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" "e7c54515524ad3ab395223fb61aff805ab6839e78535a715eba12dbcdd7bf04e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e7c54515524ad3ab395223fb61aff805ab6839e78535a715eba12dbcdd7bf04e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e7c54515524ad3ab395223fb61aff805ab6839e78535a715eba12dbcdd7bf04e", kill_on_drop: false }`
[INFO] [stdout] e7c54515524ad3ab395223fb61aff805ab6839e78535a715eba12dbcdd7bf04e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 20af5d69a5bd90906f875d1c692c166dc55ac0a76cfacddda62a5637f6e2b617
[INFO] running `Command { std: "docker" "start" "-a" "20af5d69a5bd90906f875d1c692c166dc55ac0a76cfacddda62a5637f6e2b617", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling serde v1.0.127
[INFO] [stderr]    Compiling matrixmultiply v0.1.15
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling ndarray v0.10.14
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling rawpointer v0.1.0
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling serde_derive v1.0.127
[INFO] [stderr]    Compiling itertools v0.7.11
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling num-complex v0.1.43
[INFO] [stderr]    Compiling num-traits v0.1.43
[INFO] [stderr]    Compiling rand v0.3.23
[INFO] [stderr]    Compiling num-bigint v0.1.44
[INFO] [stderr]    Compiling num-rational v0.1.42
[INFO] [stderr]    Compiling num v0.1.42
[INFO] [stderr]    Compiling ndarray-rand v0.6.1
[INFO] [stderr]    Compiling prophet v0.4.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 18.35s
[INFO] running `Command { std: "docker" "inspect" "20af5d69a5bd90906f875d1c692c166dc55ac0a76cfacddda62a5637f6e2b617", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "20af5d69a5bd90906f875d1c692c166dc55ac0a76cfacddda62a5637f6e2b617", kill_on_drop: false }`
[INFO] [stdout] 20af5d69a5bd90906f875d1c692c166dc55ac0a76cfacddda62a5637f6e2b617
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] af1f2fb86cba28bef12c8d47aa27b05647411e726417510fec04032adc0ff42a
[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" "af1f2fb86cba28bef12c8d47aa27b05647411e726417510fec04032adc0ff42a", kill_on_drop: false }`
[INFO] [stderr]    Compiling prophet v0.4.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `to_owned` that must be used
[INFO] [stdout]    --> src/neural_net.rs:418:4
[INFO] [stdout]     |
[INFO] [stdout] 418 |             layer.calculate_output_gradients(expected.view()).to_owned();
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: cloning is often expensive and is not expected to have side effects
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.63s
[INFO] running `Command { std: "docker" "inspect" "af1f2fb86cba28bef12c8d47aa27b05647411e726417510fec04032adc0ff42a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "af1f2fb86cba28bef12c8d47aa27b05647411e726417510fec04032adc0ff42a", kill_on_drop: false }`
[INFO] [stdout] af1f2fb86cba28bef12c8d47aa27b05647411e726417510fec04032adc0ff42a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] 2c9de938efd87cceeeceb9888eb07e5ff1015ffa58767a6f92240ad70f807b7b
[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" "2c9de938efd87cceeeceb9888eb07e5ff1015ffa58767a6f92240ad70f807b7b", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: unused return value of `to_owned` that must be used
[INFO] [stdout] running 22 tests
[INFO] [stderr]    --> src/neural_net.rs:418:4
[INFO] [stdout] test activation::tests::bent_identity ... ok
[INFO] [stderr]     |
[INFO] [stdout] test activation::tests::binary_step ... ok
[INFO] [stderr] 418 |             layer.calculate_output_gradients(expected.view()).to_owned();
[INFO] [stdout] test activation::tests::relu ... ok
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] test activation::tests::softsign ... ok
[INFO] [stderr]     |
[INFO] [stdout] test neural_net::tests::equivalence ... ignored
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] test mentor::samples::tests::missing_both_brackets ... ok
[INFO] [stderr]     = note: cloning is often expensive and is not expected to have side effects
[INFO] [stdout] test mentor::samples::tests::missing_right_brackets ... ok
[INFO] [stderr] 
[INFO] [stdout] test mentor::samples::tests::missing_left_brackets ... ok
[INFO] [stderr] warning: `prophet` (lib test) generated 1 warning
[INFO] [stdout] test mentor::samples::tests::sample_and_vec_equal ... ok
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stdout] test neural_net::tests::fully_connected_layer::construction_invariants ... ok
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/prophet-58c51e46dae3ed48)
[INFO] [stdout] test neural_net::tests::fully_connected_layer::propagate_gradients ... ok
[INFO] [stdout] test neural_net::tests::fully_connected_layer::update_output_gradients ... ok
[INFO] [stdout] test neural_net::tests::fully_connected_layer::feed_forward ... ok
[INFO] [stdout] test neural_net::tests::fully_connected_layer::update_weights ... ok
[INFO] [stdout] test topology::tests::construction ... ok
[INFO] [stdout] test activation::tests::softplus ... ok
[INFO] [stdout] test activation::tests::tanh ... ok
[INFO] [stdout] test activation::tests::identity ... ok
[INFO] [stdout] test activation::tests::gaussian ... ok
[INFO] [stdout] test activation::tests::logistic ... ok
[INFO] [stdout] test activation::tests::arctan ... ok
[INFO] [stdout] test activation::tests::sinusoid ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 21 passed; 0 failed; 1 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/integration.rs (/opt/rustwide/target/debug/deps/integration-cdea36a82cac19f7)
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test train_constant ... ok
[INFO] [stdout] test train_and ... ok
[INFO] [stdout] test train_xor ... ok
[INFO] [stdout] test train_triple_add ... ok
[INFO] [stderr]    Doc-tests prophet
[INFO] [stdout] test train_compare ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.15s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test src/mentor/samples.rs - samples (line 81) - compile ... ok
[INFO] [stdout] test src/mentor/samples.rs - samples (line 108) - compile ... ok
[INFO] [stdout] test src/mentor/samples.rs - samples (line 89) ... ok
[INFO] [stdout] test src/lib.rs - (line 19) ... ok
[INFO] [stdout] test src/lib.rs - (line 63) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.84s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "2c9de938efd87cceeeceb9888eb07e5ff1015ffa58767a6f92240ad70f807b7b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2c9de938efd87cceeeceb9888eb07e5ff1015ffa58767a6f92240ad70f807b7b", kill_on_drop: false }`
[INFO] [stdout] 2c9de938efd87cceeeceb9888eb07e5ff1015ffa58767a6f92240ad70f807b7b