[INFO] cloning repository https://github.com/LucasianProfessor/tinycnn
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/LucasianProfessor/tinycnn" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLucasianProfessor%2Ftinycnn", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLucasianProfessor%2Ftinycnn'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 80cd049987770607bf72b9b222f2120739c249d8
[INFO] checking LucasianProfessor/tinycnn against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLucasianProfessor%2Ftinycnn" "/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/LucasianProfessor/tinycnn on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/LucasianProfessor/tinycnn
[INFO] finished tweaking git repo https://github.com/LucasianProfessor/tinycnn
[INFO] tweaked toml for git repo https://github.com/LucasianProfessor/tinycnn written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/LucasianProfessor/tinycnn 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded libm v0.2.5
[INFO] [stderr]   Downloaded matrixmultiply v0.3.2
[INFO] [stderr]   Downloaded mnist v0.4.1
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d839f3ce3134131c14050562afe92a7b3a3e08a31250a600108a6f00c218f303
[INFO] running `Command { std: "docker" "start" "-a" "d839f3ce3134131c14050562afe92a7b3a3e08a31250a600108a6f00c218f303", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d839f3ce3134131c14050562afe92a7b3a3e08a31250a600108a6f00c218f303", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d839f3ce3134131c14050562afe92a7b3a3e08a31250a600108a6f00c218f303", kill_on_drop: false }`
[INFO] [stdout] d839f3ce3134131c14050562afe92a7b3a3e08a31250a600108a6f00c218f303
[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" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 366d1bfc356d3a32c33f253253c2a60f508e916fdfd9c0bdbbcea65a166d26ae
[INFO] running `Command { std: "docker" "start" "-a" "366d1bfc356d3a32c33f253253c2a60f508e916fdfd9c0bdbbcea65a166d26ae", kill_on_drop: false }`
[INFO] [stderr]    Compiling libm v0.2.5
[INFO] [stderr]    Compiling libc v0.2.132
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling crossbeam-utils v0.8.11
[INFO] [stderr]     Checking once_cell v1.14.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.10
[INFO] [stderr]     Checking rawpointer v0.2.1
[INFO] [stderr]    Compiling crossbeam-queue v0.3.6
[INFO] [stderr]     Checking mnist v0.4.1
[INFO] [stderr]     Checking matrixmultiply v0.3.2
[INFO] [stderr]     Checking crossbeam-channel v0.5.6
[INFO] [stderr]     Checking getrandom v0.2.7
[INFO] [stderr]     Checking crossbeam-deque v0.8.2
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking crossbeam v0.8.2
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking num-integer v0.1.45
[INFO] [stderr]     Checking num-complex v0.4.2
[INFO] [stderr]     Checking ndarray v0.15.6
[INFO] [stderr]     Checking rand_distr v0.4.3
[INFO] [stderr]     Checking ndarray-rand v0.14.0
[INFO] [stderr]     Checking tinycnn v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `validation` and `testing` are never read
[INFO] [stdout]  --> src/mnist_wrapper.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct TinyMNIST {
[INFO] [stdout]   |            --------- fields in this struct
[INFO] [stdout] 6 |     pub training: (Array3<f32>, Array2<u8>),
[INFO] [stdout] 7 |     pub validation: (Array3<f32>, Array2<u8>),
[INFO] [stdout]   |         ^^^^^^^^^^
[INFO] [stdout] 8 |     pub testing: (Array3<f32>, Array2<u8>)
[INFO] [stdout]   |         ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `validation` and `testing` are never read
[INFO] [stdout]  --> src/mnist_wrapper.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct TinyMNIST {
[INFO] [stdout]   |            --------- fields in this struct
[INFO] [stdout] 6 |     pub training: (Array3<f32>, Array2<u8>),
[INFO] [stdout] 7 |     pub validation: (Array3<f32>, Array2<u8>),
[INFO] [stdout]   |         ^^^^^^^^^^
[INFO] [stdout] 8 |     pub testing: (Array3<f32>, Array2<u8>)
[INFO] [stdout]   |         ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.16s
[INFO] running `Command { std: "docker" "inspect" "366d1bfc356d3a32c33f253253c2a60f508e916fdfd9c0bdbbcea65a166d26ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "366d1bfc356d3a32c33f253253c2a60f508e916fdfd9c0bdbbcea65a166d26ae", kill_on_drop: false }`
[INFO] [stdout] 366d1bfc356d3a32c33f253253c2a60f508e916fdfd9c0bdbbcea65a166d26ae
[INFO] checking LucasianProfessor/tinycnn against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLucasianProfessor%2Ftinycnn" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/LucasianProfessor/tinycnn on toolchain 645bb72776a6a56a1a8f52631a44bd082b2ba509
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/LucasianProfessor/tinycnn
[INFO] finished tweaking git repo https://github.com/LucasianProfessor/tinycnn
[INFO] tweaked toml for git repo https://github.com/LucasianProfessor/tinycnn written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/LucasianProfessor/tinycnn 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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6124e88cc8cc44927f1f31e549bd838ee08325564f064f155dd1d65a31ccfee8
[INFO] running `Command { std: "docker" "start" "-a" "6124e88cc8cc44927f1f31e549bd838ee08325564f064f155dd1d65a31ccfee8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6124e88cc8cc44927f1f31e549bd838ee08325564f064f155dd1d65a31ccfee8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6124e88cc8cc44927f1f31e549bd838ee08325564f064f155dd1d65a31ccfee8", kill_on_drop: false }`
[INFO] [stdout] 6124e88cc8cc44927f1f31e549bd838ee08325564f064f155dd1d65a31ccfee8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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" "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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 74dd8304ef5ac1b9756bd4269bd084802d93176ccc069904a6b9ec344f9b0f32
[INFO] running `Command { std: "docker" "start" "-a" "74dd8304ef5ac1b9756bd4269bd084802d93176ccc069904a6b9ec344f9b0f32", kill_on_drop: false }`
[INFO] [stderr]    Compiling libm v0.2.5
[INFO] [stderr]    Compiling libc v0.2.132
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling crossbeam-utils v0.8.11
[INFO] [stderr]     Checking once_cell v1.14.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.10
[INFO] [stderr]    Compiling crossbeam-queue v0.3.6
[INFO] [stderr]     Checking rawpointer v0.2.1
[INFO] [stderr]     Checking mnist v0.4.1
[INFO] [stderr]     Checking matrixmultiply v0.3.2
[INFO] [stderr]     Checking crossbeam-channel v0.5.6
[INFO] [stderr]     Checking crossbeam-deque v0.8.2
[INFO] [stderr]     Checking getrandom v0.2.7
[INFO] [stderr]     Checking crossbeam v0.8.2
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking num-integer v0.1.45
[INFO] [stderr]     Checking num-complex v0.4.2
[INFO] [stderr]     Checking ndarray v0.15.6
[INFO] [stderr]     Checking rand_distr v0.4.3
[INFO] [stderr]     Checking ndarray-rand v0.14.0
[INFO] [stderr]     Checking tinycnn v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `validation` and `testing` are never read
[INFO] [stdout]  --> src/mnist_wrapper.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct TinyMNIST {
[INFO] [stdout]   |            --------- fields in this struct
[INFO] [stdout] 6 |     pub training: (Array3<f32>, Array2<u8>),
[INFO] [stdout] 7 |     pub validation: (Array3<f32>, Array2<u8>),
[INFO] [stdout]   |         ^^^^^^^^^^
[INFO] [stdout] 8 |     pub testing: (Array3<f32>, Array2<u8>)
[INFO] [stdout]   |         ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `validation` and `testing` are never read
[INFO] [stdout]  --> src/mnist_wrapper.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct TinyMNIST {
[INFO] [stdout]   |            --------- fields in this struct
[INFO] [stdout] 6 |     pub training: (Array3<f32>, Array2<u8>),
[INFO] [stdout] 7 |     pub validation: (Array3<f32>, Array2<u8>),
[INFO] [stdout]   |         ^^^^^^^^^^
[INFO] [stdout] 8 |     pub testing: (Array3<f32>, Array2<u8>)
[INFO] [stdout]   |         ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.79s
[INFO] running `Command { std: "docker" "inspect" "74dd8304ef5ac1b9756bd4269bd084802d93176ccc069904a6b9ec344f9b0f32", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "74dd8304ef5ac1b9756bd4269bd084802d93176ccc069904a6b9ec344f9b0f32", kill_on_drop: false }`
[INFO] [stdout] 74dd8304ef5ac1b9756bd4269bd084802d93176ccc069904a6b9ec344f9b0f32