[INFO] crate prophet 0.4.2 is already in cache
[INFO] testing prophet-0.4.2 against master#8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e for pr-74409
[INFO] extracting crate prophet 0.4.2 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate prophet 0.4.2 on toolchain 8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "read-manifest" "--manifest-path" "Cargo.toml", 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-14/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cabaefd40671d8b2492099afa0047aa9138f0f63ed5e89547ebbfe89d03e41ed
[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" "cabaefd40671d8b2492099afa0047aa9138f0f63ed5e89547ebbfe89d03e41ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cabaefd40671d8b2492099afa0047aa9138f0f63ed5e89547ebbfe89d03e41ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cabaefd40671d8b2492099afa0047aa9138f0f63ed5e89547ebbfe89d03e41ed", kill_on_drop: false }`
[INFO] [stdout] cabaefd40671d8b2492099afa0047aa9138f0f63ed5e89547ebbfe89d03e41ed
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3c57533943cd4af35e074511b827b15882084e06d0627689492e9747ed6e577b
[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" "3c57533943cd4af35e074511b827b15882084e06d0627689492e9747ed6e577b", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling libc v0.2.73
[INFO] [stderr]    Compiling proc-macro2 v1.0.19
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling ndarray v0.10.14
[INFO] [stderr]    Compiling serde_derive v1.0.114
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling itertools v0.7.11
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling num-iter v0.1.41
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling syn v1.0.35
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling rand v0.3.23
[INFO] [stderr]    Compiling num-complex v0.1.43
[INFO] [stderr]    Compiling num-traits v0.1.43
[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 43.41s
[INFO] running `Command { std: "docker" "inspect" "3c57533943cd4af35e074511b827b15882084e06d0627689492e9747ed6e577b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3c57533943cd4af35e074511b827b15882084e06d0627689492e9747ed6e577b", kill_on_drop: false }`
[INFO] [stdout] 3c57533943cd4af35e074511b827b15882084e06d0627689492e9747ed6e577b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2860bf3d0492504ed630480706ce4c66bb06ce59410b7d57ce273d85ea0c4d63
[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" "2860bf3d0492504ed630480706ce4c66bb06ce59410b7d57ce273d85ea0c4d63", kill_on_drop: false }`
[INFO] [stderr]    Compiling approx v0.1.1
[INFO] [stderr]    Compiling prophet v0.4.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `std::borrow::ToOwned::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 4.42s
[INFO] running `Command { std: "docker" "inspect" "2860bf3d0492504ed630480706ce4c66bb06ce59410b7d57ce273d85ea0c4d63", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2860bf3d0492504ed630480706ce4c66bb06ce59410b7d57ce273d85ea0c4d63", kill_on_drop: false }`
[INFO] [stdout] 2860bf3d0492504ed630480706ce4c66bb06ce59410b7d57ce273d85ea0c4d63
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 051ca4f1dd4764a22e44fe919f6ca6de54181719b84c419ef391e5c1b1b98356
[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" "051ca4f1dd4764a22e44fe919f6ca6de54181719b84c419ef391e5c1b1b98356", kill_on_drop: false }`
[INFO] [stderr] warning: unused return value of `std::borrow::ToOwned::to_owned` that must be used
[INFO] [stderr]    --> src/neural_net.rs:418:4
[INFO] [stderr]     |
[INFO] [stderr] 418 |             layer.calculate_output_gradients(expected.view()).to_owned();
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: cloning is often expensive and is not expected to have side effects
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.13s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/prophet-19f5f422c92a46cd
[INFO] [stdout] 
[INFO] [stdout] running 22 tests
[INFO] [stdout] test neural_net::tests::equivalence ... ignored
[INFO] [stdout] test activation::tests::tanh ... ok
[INFO] [stdout] test activation::tests::softsign ... ok
[INFO] [stdout] test mentor::samples::tests::missing_left_brackets ... ok
[INFO] [stdout] test mentor::samples::tests::missing_both_brackets ... ok
[INFO] [stdout] test neural_net::tests::fully_connected_layer::propagate_gradients ... ok
[INFO] [stdout] test neural_net::tests::fully_connected_layer::feed_forward ... ok
[INFO] [stdout] test activation::tests::softplus ... ok
[INFO] [stdout] test activation::tests::bent_identity ... ok
[INFO] [stdout] test activation::tests::binary_step ... ok
[INFO] [stdout] test neural_net::tests::fully_connected_layer::construction_invariants ... ok
[INFO] [stdout] test neural_net::tests::fully_connected_layer::update_output_gradients ... ok
[INFO] [stdout] test neural_net::tests::fully_connected_layer::update_weights ... ok
[INFO] [stdout] test activation::tests::relu ... ok
[INFO] [stdout] test activation::tests::logistic ... ok
[INFO] [stdout] test activation::tests::identity ... ok
[INFO] [stdout] test mentor::samples::tests::sample_and_vec_equal ... ok
[INFO] [stdout] test mentor::samples::tests::missing_right_brackets ... ok
[INFO] [stdout] test topology::tests::construction ... ok
[INFO] [stdout] test activation::tests::sinusoid ... ok
[INFO] [stdout] test activation::tests::arctan ... ok
[INFO] [stdout] test activation::tests::gaussian ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 21 passed; 0 failed; 1 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/integration-cea38d12a783bca2
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test train_and ... ok
[INFO] [stdout] test train_constant ... ok
[INFO] [stdout] test train_triple_add ... ok
[INFO] [stdout] test train_compare ... ok
[INFO] [stdout] test train_xor ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests prophet
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test src/mentor/samples.rs - samples (line 81) ... ok
[INFO] [stdout] test src/mentor/samples.rs - samples (line 108) ... ok
[INFO] [stdout] test src/lib.rs - (line 63) ... ok
[INFO] [stdout] test src/mentor/samples.rs - samples (line 89) ... ok
[INFO] [stdout] test src/lib.rs - (line 19) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "051ca4f1dd4764a22e44fe919f6ca6de54181719b84c419ef391e5c1b1b98356", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "051ca4f1dd4764a22e44fe919f6ca6de54181719b84c419ef391e5c1b1b98356", kill_on_drop: false }`
[INFO] [stdout] 051ca4f1dd4764a22e44fe919f6ca6de54181719b84c419ef391e5c1b1b98356