[INFO] cloning repository https://github.com/Efrain-L/MNIST-Neural-Network-from-Scratch-in-Rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Efrain-L/MNIST-Neural-Network-from-Scratch-in-Rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEfrain-L%2FMNIST-Neural-Network-from-Scratch-in-Rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEfrain-L%2FMNIST-Neural-Network-from-Scratch-in-Rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 40cb5d48f12765833220453ebb14dc1e810d4149
[INFO] testing Efrain-L/MNIST-Neural-Network-from-Scratch-in-Rust against master#1ef7943ee607160a564655b6596f83670ef95df5 for pr-146098-6
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEfrain-L%2FMNIST-Neural-Network-from-Scratch-in-Rust" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Efrain-L/MNIST-Neural-Network-from-Scratch-in-Rust
[INFO] finished tweaking git repo https://github.com/Efrain-L/MNIST-Neural-Network-from-Scratch-in-Rust
[INFO] tweaked toml for git repo https://github.com/Efrain-L/MNIST-Neural-Network-from-Scratch-in-Rust written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Efrain-L/MNIST-Neural-Network-from-Scratch-in-Rust on toolchain 1ef7943ee607160a564655b6596f83670ef95df5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1ef7943ee607160a564655b6596f83670ef95df5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Efrain-L/MNIST-Neural-Network-from-Scratch-in-Rust 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" "+1ef7943ee607160a564655b6596f83670ef95df5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded raster v0.2.0
[INFO] [stderr]   Downloaded ndarray-csv v0.5.1
[INFO] [stderr]   Downloaded num-bigint v0.1.44
[INFO] [stderr]   Downloaded inflate v0.1.1
[INFO] [stderr]   Downloaded num-rational v0.1.42
[INFO] [stderr]   Downloaded gif v0.9.2
[INFO] [stderr]   Downloaded cc v1.0.76
[INFO] [stderr]   Downloaded miniz-sys v0.1.12
[INFO] [stderr]   Downloaded flate2 v0.2.20
[INFO] [stderr]   Downloaded image v0.10.4
[INFO] [stderr]   Downloaded png v0.5.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1ef7943ee607160a564655b6596f83670ef95df5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] aa44d934fe4bc34a3e8cb6abe11e4306ba1fe189563ee900c006252e78f85d44
[INFO] running `Command { std: "docker" "start" "-a" "aa44d934fe4bc34a3e8cb6abe11e4306ba1fe189563ee900c006252e78f85d44", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "aa44d934fe4bc34a3e8cb6abe11e4306ba1fe189563ee900c006252e78f85d44", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aa44d934fe4bc34a3e8cb6abe11e4306ba1fe189563ee900c006252e78f85d44", kill_on_drop: false }`
[INFO] [stdout] aa44d934fe4bc34a3e8cb6abe11e4306ba1fe189563ee900c006252e78f85d44
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1ef7943ee607160a564655b6596f83670ef95df5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 17514adfd35517b729fcbb94036cfdd167cccb38de9764feea1325c0d0d81558
[INFO] running `Command { std: "docker" "start" "-a" "17514adfd35517b729fcbb94036cfdd167cccb38de9764feea1325c0d0d81558", kill_on_drop: false }`
[INFO] [stderr]    Compiling libm v0.2.6
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling crossbeam-utils v0.8.12
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.11
[INFO] [stderr]    Compiling rayon-core v1.9.3
[INFO] [stderr]    Compiling cc v1.0.76
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling getrandom v0.2.8
[INFO] [stderr]    Compiling num_cpus v1.14.0
[INFO] [stderr]    Compiling rayon v1.5.3
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]    Compiling either v1.8.0
[INFO] [stderr]    Compiling serde v1.0.147
[INFO] [stderr]    Compiling crossbeam-channel v0.5.6
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling rustc-serialize v0.3.24
[INFO] [stderr]    Compiling crossbeam-deque v0.8.2
[INFO] [stdout] error[E0310]: the parameter type `T` may not live long enough
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/rustc-serialize-0.3.24/src/serialize.rs:1155:5
[INFO] [stdout]      |
[INFO] [stdout] 1155 |     fn decode<D: Decoder>(d: &mut D) -> Result<Cow<'static, T>, D::Error> {
[INFO] [stdout]      |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |     |
[INFO] [stdout]      |     the parameter type `T` must be valid for the static lifetime...
[INFO] [stdout]      |     ...so that the type `T` will meet its required lifetime bounds...
[INFO] [stdout]      |
[INFO] [stdout] note: ...that is required by this bound
[INFO] [stdout]     --> /rustc/1ef7943ee607160a564655b6596f83670ef95df5/library/alloc/src/borrow.rs:182:30
[INFO] [stdout] help: consider adding an explicit lifetime bound
[INFO] [stdout]      |
[INFO] [stdout] 1151 | impl<'a, T: ?Sized + 'static> Decodable for Cow<'a, T>
[INFO] [stdout]      |                    +++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling miniz-sys v0.1.12
[INFO] [stderr]    Compiling matrixmultiply v0.3.2
[INFO] [stderr]    Compiling num-traits v0.1.43
[INFO] [stderr]    Compiling num-complex v0.4.2
[INFO] [stderr]    Compiling regex-automata v0.1.10
[INFO] [stderr]    Compiling flate2 v0.2.20
[INFO] [stderr]    Compiling enum_primitive v0.1.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling ndarray v0.15.6
[INFO] [stderr]    Compiling csv-core v0.1.10
[INFO] [stderr]    Compiling itoa v0.4.8
[INFO] [stderr]    Compiling inflate v0.1.1
[INFO] [stderr]    Compiling ryu v1.0.11
[INFO] [stderr]    Compiling glob v0.2.11
[INFO] [stderr]    Compiling byteorder v0.5.3
[INFO] [stderr]    Compiling lzw v0.10.0
[INFO] [stdout] For more information about this error, try `rustc --explain E0310`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rustc-serialize` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "17514adfd35517b729fcbb94036cfdd167cccb38de9764feea1325c0d0d81558", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "17514adfd35517b729fcbb94036cfdd167cccb38de9764feea1325c0d0d81558", kill_on_drop: false }`
[INFO] [stdout] 17514adfd35517b729fcbb94036cfdd167cccb38de9764feea1325c0d0d81558
