[INFO] cloning repository https://github.com/key262yek/scratch
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/key262yek/scratch" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkey262yek%2Fscratch", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkey262yek%2Fscratch'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3edada2b9609ed39652d76b07d23984dadbe4f9c
[INFO] testing key262yek/scratch against 1.90.0 for beta-1.91-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkey262yek%2Fscratch" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/key262yek/scratch
[INFO] finished tweaking git repo https://github.com/key262yek/scratch
[INFO] tweaked toml for git repo https://github.com/key262yek/scratch written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/key262yek/scratch on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/key262yek/scratch 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" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 37 packages to latest compatible versions
[INFO] [stderr]       Adding adler2 v2.0.1
[INFO] [stderr]       Adding cc v1.2.39
[INFO] [stderr]       Adding cfg-if v1.0.3
[INFO] [stderr]       Adding crc32fast v1.5.0
[INFO] [stderr]       Adding crossbeam-channel v0.5.15
[INFO] [stderr]       Adding crossbeam-utils v0.8.21
[INFO] [stderr]       Adding curl v0.4.49
[INFO] [stderr]       Adding curl-sys v0.4.83+curl-8.15.0
[INFO] [stderr]       Adding find-msvc-tools v0.1.2
[INFO] [stderr]       Adding flate2 v1.1.2
[INFO] [stderr]       Adding libc v0.2.176
[INFO] [stderr]       Adding libz-sys v1.1.22
[INFO] [stderr]       Adding miniz_oxide v0.8.9
[INFO] [stderr]       Adding mnist v0.5.0 (available: v0.6.0)
[INFO] [stderr]       Adding openssl-probe v0.1.6
[INFO] [stderr]       Adding openssl-sys v0.9.109
[INFO] [stderr]       Adding pbr v1.1.1
[INFO] [stderr]       Adding pkg-config v0.3.32
[INFO] [stderr]       Adding schannel v0.1.28
[INFO] [stderr]       Adding shlex v1.3.0
[INFO] [stderr]       Adding socket2 v0.6.0
[INFO] [stderr]       Adding vcpkg v0.2.15
[INFO] [stderr]       Adding winapi v0.3.9
[INFO] [stderr]       Adding winapi-i686-pc-windows-gnu v0.4.0
[INFO] [stderr]       Adding winapi-x86_64-pc-windows-gnu v0.4.0
[INFO] [stderr]       Adding windows-link v0.2.0
[INFO] [stderr]       Adding windows-sys v0.59.0
[INFO] [stderr]       Adding windows-sys v0.61.1
[INFO] [stderr]       Adding windows-targets v0.52.6
[INFO] [stderr]       Adding windows_aarch64_gnullvm v0.52.6
[INFO] [stderr]       Adding windows_aarch64_msvc v0.52.6
[INFO] [stderr]       Adding windows_i686_gnu v0.52.6
[INFO] [stderr]       Adding windows_i686_gnullvm v0.52.6
[INFO] [stderr]       Adding windows_i686_msvc v0.52.6
[INFO] [stderr]       Adding windows_x86_64_gnu v0.52.6
[INFO] [stderr]       Adding windows_x86_64_gnullvm v0.52.6
[INFO] [stderr]       Adding windows_x86_64_msvc v0.52.6
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rawpointer v0.2.1
[INFO] [stderr]   Downloaded windows-link v0.2.0
[INFO] [stderr]   Downloaded mnist v0.5.0
[INFO] [stderr]   Downloaded iter-read v0.3.1
[INFO] [stderr]   Downloaded cfg-if v1.0.3
[INFO] [stderr]   Downloaded num-complex v0.4.2
[INFO] [stderr]   Downloaded find-msvc-tools v0.1.2
[INFO] [stderr]   Downloaded schannel v0.1.28
[INFO] [stderr]   Downloaded matrixmultiply v0.3.2
[INFO] [stderr]   Downloaded openssl-sys v0.9.109
[INFO] [stderr]   Downloaded cc v1.2.39
[INFO] [stderr]   Downloaded curl v0.4.49
[INFO] [stderr]   Downloaded serde v1.0.144
[INFO] [stderr]   Downloaded num-bigint v0.4.3
[INFO] [stderr]   Downloaded pbr v1.1.1
[INFO] [stderr]   Downloaded ndarray v0.15.6
[INFO] [stderr]   Downloaded serde-pickle v1.1.1
[INFO] [stderr]   Downloaded libc v0.2.176
[INFO] [stderr]   Downloaded libz-sys v1.1.22
[INFO] [stderr]   Downloaded curl-sys v0.4.83+curl-8.15.0
[INFO] [stderr]   Downloaded windows-sys v0.61.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 60052429e56a367362ff42842fed79ef0232f064b31fc173d1d707983eedff53
[INFO] running `Command { std: "docker" "start" "-a" "60052429e56a367362ff42842fed79ef0232f064b31fc173d1d707983eedff53", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "60052429e56a367362ff42842fed79ef0232f064b31fc173d1d707983eedff53", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "60052429e56a367362ff42842fed79ef0232f064b31fc173d1d707983eedff53", kill_on_drop: false }`
[INFO] [stdout] 60052429e56a367362ff42842fed79ef0232f064b31fc173d1d707983eedff53
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] efc7f160faa0cf2ef707cf4775696c8619beabe5a73894f4f7e81341a9ef8781
[INFO] running `Command { std: "docker" "start" "-a" "efc7f160faa0cf2ef707cf4775696c8619beabe5a73894f4f7e81341a9ef8781", kill_on_drop: false }`
[INFO] [stderr]    Compiling find-msvc-tools v0.1.2
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling pkg-config v0.3.32
[INFO] [stderr]    Compiling libc v0.2.176
[INFO] [stderr]    Compiling crossbeam-utils v0.8.21
[INFO] [stderr]    Compiling crc32fast v1.5.0
[INFO] [stderr]    Compiling serde v1.0.144
[INFO] [stderr]    Compiling curl v0.4.49
[INFO] [stderr]    Compiling adler2 v2.0.1
[INFO] [stderr]    Compiling cfg-if v1.0.3
[INFO] [stderr]    Compiling rawpointer v0.2.1
[INFO] [stderr]    Compiling openssl-probe v0.1.6
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling iter-read v0.3.1
[INFO] [stderr]    Compiling matrixmultiply v0.3.2
[INFO] [stderr]    Compiling miniz_oxide v0.8.9
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]    Compiling cc v1.2.39
[INFO] [stderr]    Compiling flate2 v1.1.2
[INFO] [stderr]    Compiling crossbeam-channel v0.5.15
[INFO] [stderr]    Compiling socket2 v0.6.0
[INFO] [stderr]    Compiling pbr v1.1.1
[INFO] [stderr]    Compiling num-complex v0.4.2
[INFO] [stderr]    Compiling approx v0.5.1
[INFO] [stderr]    Compiling libz-sys v1.1.22
[INFO] [stderr]    Compiling openssl-sys v0.9.109
[INFO] [stderr]    Compiling curl-sys v0.4.83+curl-8.15.0
[INFO] [stderr]    Compiling ndarray v0.15.6
[INFO] [stderr]    Compiling serde-pickle v1.1.1
[INFO] [stderr]    Compiling mnist v0.5.0
[INFO] [stderr]    Compiling scratch v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/learning.rs:41:9
[INFO] [stdout]    |
[INFO] [stdout] 41 |         8
[INFO] [stdout]    |         ^ expected `()`, found integer
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `scratch` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "efc7f160faa0cf2ef707cf4775696c8619beabe5a73894f4f7e81341a9ef8781", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "efc7f160faa0cf2ef707cf4775696c8619beabe5a73894f4f7e81341a9ef8781", kill_on_drop: false }`
[INFO] [stdout] efc7f160faa0cf2ef707cf4775696c8619beabe5a73894f4f7e81341a9ef8781