[INFO] cloning repository https://github.com/mt-rainier/mnist_plain_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mt-rainier/mnist_plain_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmt-rainier%2Fmnist_plain_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmt-rainier%2Fmnist_plain_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 90f6b4f50268ef4a6aadf9d21cc4a54b28c0d9bd
[INFO] testing mt-rainier/mnist_plain_rust against master#b70888601af92f6cdc0364abab3446e418b91d36 for pr-86479
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmt-rainier%2Fmnist_plain_rust" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] [stderr] Updating files: 100% (10/10)
Updating files: 100% (10/10), done.
[INFO] validating manifest of git repo https://github.com/mt-rainier/mnist_plain_rust on toolchain b70888601af92f6cdc0364abab3446e418b91d36
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mt-rainier/mnist_plain_rust
[INFO] finished tweaking git repo https://github.com/mt-rainier/mnist_plain_rust
[INFO] tweaked toml for git repo https://github.com/mt-rainier/mnist_plain_rust written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/mt-rainier/mnist_plain_rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 57de7f5a61a84b0d821ec775fab276bf94ce9ea722e0441d3733e867118f454f
[INFO] running `Command { std: "docker" "start" "-a" "57de7f5a61a84b0d821ec775fab276bf94ce9ea722e0441d3733e867118f454f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "57de7f5a61a84b0d821ec775fab276bf94ce9ea722e0441d3733e867118f454f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "57de7f5a61a84b0d821ec775fab276bf94ce9ea722e0441d3733e867118f454f", kill_on_drop: false }`
[INFO] [stdout] 57de7f5a61a84b0d821ec775fab276bf94ce9ea722e0441d3733e867118f454f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3a7707f8799a565fcb472dddbf0659cbce3b43cccd08e837d503aa843101e5f0
[INFO] running `Command { std: "docker" "start" "-a" "3a7707f8799a565fcb472dddbf0659cbce3b43cccd08e837d503aa843101e5f0", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.88
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling byteorder v1.4.2
[INFO] [stderr]    Compiling rand_core v0.6.2
[INFO] [stderr]    Compiling rand_chacha v0.3.0
[INFO] [stderr]    Compiling rand v0.8.3
[INFO] [stderr]    Compiling mnist_plain_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.58s
[INFO] running `Command { std: "docker" "inspect" "3a7707f8799a565fcb472dddbf0659cbce3b43cccd08e837d503aa843101e5f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3a7707f8799a565fcb472dddbf0659cbce3b43cccd08e837d503aa843101e5f0", kill_on_drop: false }`
[INFO] [stdout] 3a7707f8799a565fcb472dddbf0659cbce3b43cccd08e837d503aa843101e5f0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 822d6d1679d395ad63713ed8ae8215a02dfd8f5dc3b480d5dddff463a07884ff
[INFO] running `Command { std: "docker" "start" "-a" "822d6d1679d395ad63713ed8ae8215a02dfd8f5dc3b480d5dddff463a07884ff", kill_on_drop: false }`
[INFO] [stderr]    Compiling mnist_plain_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.11s
[INFO] running `Command { std: "docker" "inspect" "822d6d1679d395ad63713ed8ae8215a02dfd8f5dc3b480d5dddff463a07884ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "822d6d1679d395ad63713ed8ae8215a02dfd8f5dc3b480d5dddff463a07884ff", kill_on_drop: false }`
[INFO] [stdout] 822d6d1679d395ad63713ed8ae8215a02dfd8f5dc3b480d5dddff463a07884ff
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] d881dcde2337f77d78d7915e4674fb18911be58e29ec59ce955d88718a218a91
[INFO] running `Command { std: "docker" "start" "-a" "d881dcde2337f77d78d7915e4674fb18911be58e29ec59ce955d88718a218a91", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/mnist_plain_rust-50b6247820d1ec89)
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "d881dcde2337f77d78d7915e4674fb18911be58e29ec59ce955d88718a218a91", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d881dcde2337f77d78d7915e4674fb18911be58e29ec59ce955d88718a218a91", kill_on_drop: false }`
[INFO] [stdout] d881dcde2337f77d78d7915e4674fb18911be58e29ec59ce955d88718a218a91