[INFO] cloning repository https://github.com/hoodyman/mperceptron
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hoodyman/mperceptron" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhoodyman%2Fmperceptron", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhoodyman%2Fmperceptron'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c090a704f1c0dc0b5b1e618d2071259a9a0eeaf2
[INFO] building hoodyman/mperceptron against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhoodyman%2Fmperceptron" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/hoodyman/mperceptron on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/hoodyman/mperceptron
[INFO] finished tweaking git repo https://github.com/hoodyman/mperceptron
[INFO] tweaked toml for git repo https://github.com/hoodyman/mperceptron written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/hoodyman/mperceptron already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 24a33b03d91dcb578264e197aa60f4b885c635d9541cdda7e01561c21dd5c4ba
[INFO] running `Command { std: "docker" "start" "-a" "24a33b03d91dcb578264e197aa60f4b885c635d9541cdda7e01561c21dd5c4ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "24a33b03d91dcb578264e197aa60f4b885c635d9541cdda7e01561c21dd5c4ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "24a33b03d91dcb578264e197aa60f4b885c635d9541cdda7e01561c21dd5c4ba", kill_on_drop: false }`
[INFO] [stdout] 24a33b03d91dcb578264e197aa60f4b885c635d9541cdda7e01561c21dd5c4ba
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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=forbid -Dtail-expr-drop-order" "-e" "RUSTDOCFLAGS=--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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] adef2819a892ec15b07fb8f18f0f5b926ff148003f876b9cc0825ce41e967d7c
[INFO] running `Command { std: "docker" "start" "-a" "adef2819a892ec15b07fb8f18f0f5b926ff148003f876b9cc0825ce41e967d7c", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.141
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling ppv-lite86 v0.2.17
[INFO] [stderr]    Compiling getrandom v0.2.8
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling mperceptron v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/main.rs:43:21
[INFO] [stdout]    |
[INFO] [stdout] 43 |     fn deriv(&self, x: FType) -> FType {
[INFO] [stdout]    |                     ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Epochs` is never constructed
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | enum TrainConstraint {
[INFO] [stdout]   |      --------------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 6 |     Epochs(usize),
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Zero` is never constructed
[INFO] [stdout]   --> src/main.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 9  | enum InitialWeights {
[INFO] [stdout]    |      -------------- variant in this enum
[INFO] [stdout] 10 |     Random,
[INFO] [stdout] 11 |     Zero,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Logistic`, `Hyperbolic`, `Softsign`, `ReLU`, and `BentIdentity` are never constructed
[INFO] [stdout]   --> src/main.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | enum ActivationEnum {
[INFO] [stdout]    |      -------------- variants in this enum
[INFO] [stdout] 15 |     Logistic,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 16 |     Identity,
[INFO] [stdout] 17 |     Hyperbolic,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 18 |     Softsign,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 19 |     ReLU,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 20 |     BentIdentity,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.52s
[INFO] running `Command { std: "docker" "inspect" "adef2819a892ec15b07fb8f18f0f5b926ff148003f876b9cc0825ce41e967d7c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "adef2819a892ec15b07fb8f18f0f5b926ff148003f876b9cc0825ce41e967d7c", kill_on_drop: false }`
[INFO] [stdout] adef2819a892ec15b07fb8f18f0f5b926ff148003f876b9cc0825ce41e967d7c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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=forbid -Dtail-expr-drop-order" "-e" "RUSTDOCFLAGS=--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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 751b8f77e5eda99143a242babcd3dc54efb98e4b5f6066b5ba16e48d40685975
[INFO] running `Command { std: "docker" "start" "-a" "751b8f77e5eda99143a242babcd3dc54efb98e4b5f6066b5ba16e48d40685975", kill_on_drop: false }`
[INFO] [stderr]    Compiling mperceptron v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/main.rs:43:21
[INFO] [stdout]    |
[INFO] [stdout] 43 |     fn deriv(&self, x: FType) -> FType {
[INFO] [stdout]    |                     ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Epochs` is never constructed
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | enum TrainConstraint {
[INFO] [stdout]   |      --------------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 6 |     Epochs(usize),
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Zero` is never constructed
[INFO] [stdout]   --> src/main.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 9  | enum InitialWeights {
[INFO] [stdout]    |      -------------- variant in this enum
[INFO] [stdout] 10 |     Random,
[INFO] [stdout] 11 |     Zero,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Logistic`, `Hyperbolic`, `Softsign`, `ReLU`, and `BentIdentity` are never constructed
[INFO] [stdout]   --> src/main.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | enum ActivationEnum {
[INFO] [stdout]    |      -------------- variants in this enum
[INFO] [stdout] 15 |     Logistic,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 16 |     Identity,
[INFO] [stdout] 17 |     Hyperbolic,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 18 |     Softsign,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 19 |     ReLU,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 20 |     BentIdentity,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.24s
[INFO] running `Command { std: "docker" "inspect" "751b8f77e5eda99143a242babcd3dc54efb98e4b5f6066b5ba16e48d40685975", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "751b8f77e5eda99143a242babcd3dc54efb98e4b5f6066b5ba16e48d40685975", kill_on_drop: false }`
[INFO] [stdout] 751b8f77e5eda99143a242babcd3dc54efb98e4b5f6066b5ba16e48d40685975