[INFO] updating cached repository https://github.com/kitagry/rust-deep-learning
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7e37fb00e07d650cd8fdfc6ed8771d2a0f6527fd
[INFO] checking kitagry/rust-deep-learning against master#8ac1525e091d3db28e67adcbbd6db1e1deaa37fb for pr-73323
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkitagry%2Frust-deep-learning" "/workspace/builds/worker-10/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kitagry/rust-deep-learning on toolchain 8ac1525e091d3db28e67adcbbd6db1e1deaa37fb
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8ac1525e091d3db28e67adcbbd6db1e1deaa37fb" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/kitagry/rust-deep-learning
[INFO] finished tweaking git repo https://github.com/kitagry/rust-deep-learning
[INFO] tweaked toml for git repo https://github.com/kitagry/rust-deep-learning written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/kitagry/rust-deep-learning already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8ac1525e091d3db28e67adcbbd6db1e1deaa37fb" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+8ac1525e091d3db28e67adcbbd6db1e1deaa37fb" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] bb4e5ca8316bdb6a623bb3fd3374a68633977d2c1eceaea150ba6c056a5be5ce
[INFO] running `Command { std: "docker" "start" "-a" "bb4e5ca8316bdb6a623bb3fd3374a68633977d2c1eceaea150ba6c056a5be5ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bb4e5ca8316bdb6a623bb3fd3374a68633977d2c1eceaea150ba6c056a5be5ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bb4e5ca8316bdb6a623bb3fd3374a68633977d2c1eceaea150ba6c056a5be5ce", kill_on_drop: false }`
[INFO] [stdout] bb4e5ca8316bdb6a623bb3fd3374a68633977d2c1eceaea150ba6c056a5be5ce
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+8ac1525e091d3db28e67adcbbd6db1e1deaa37fb" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 90cb0f0c77920f8fdaf0e968e567eec3be4ee86a1b487c36daf8ca5ec9beb780
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "90cb0f0c77920f8fdaf0e968e567eec3be4ee86a1b487c36daf8ca5ec9beb780", kill_on_drop: false }`
[INFO] [stderr]    Compiling getrandom v0.1.13
[INFO] [stderr]     Checking ppv-lite86 v0.2.6
[INFO] [stderr]    Compiling ndarray v0.13.0
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling num-rational v0.2.2
[INFO] [stderr]    Compiling num-iter v0.1.39
[INFO] [stderr]    Compiling num-complex v0.2.3
[INFO] [stderr]     Checking inflate v0.4.5
[INFO] [stderr]     Checking gif v0.10.3
[INFO] [stderr]     Checking itertools v0.8.0
[INFO] [stderr]     Checking crc32fast v1.2.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking deflate v0.7.20
[INFO] [stderr]     Checking mnist v0.4.0
[INFO] [stderr]     Checking rayon-core v1.6.0
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking c2-chacha v0.2.3
[INFO] [stderr]     Checking rayon v1.2.0
[INFO] [stderr]     Checking png v0.15.0
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking rand v0.7.2
[INFO] [stderr]     Checking jpeg-decoder v0.1.16
[INFO] [stderr]    Compiling num-derive v0.2.5
[INFO] [stderr]     Checking tiff v0.3.1
[INFO] [stderr]     Checking image v0.22.3
[INFO] [stderr]     Checking rust-deep-learning v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `trn_lbl`
[INFO] [stdout]   --> src/main.rs:67:7
[INFO] [stdout]    |
[INFO] [stdout] 67 |   let trn_lbl = rcarr1(&trn_lbl).reshape((trn_size, 10));
[INFO] [stdout]    |       ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_trn_lbl`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tst_img`
[INFO] [stdout]   --> src/main.rs:68:7
[INFO] [stdout]    |
[INFO] [stdout] 68 |   let tst_img = rcarr1(&tst_img).reshape((tst_size, rows * cols));
[INFO] [stdout]    |       ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_tst_img`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tst_lbl`
[INFO] [stdout]   --> src/main.rs:69:7
[INFO] [stdout]    |
[INFO] [stdout] 69 |   let tst_lbl = rcarr1(&tst_lbl).reshape((tst_size, 10));
[INFO] [stdout]    |       ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_tst_lbl`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `trn_lbl`
[INFO] [stdout]   --> src/main.rs:67:7
[INFO] [stdout]    |
[INFO] [stdout] 67 |   let trn_lbl = rcarr1(&trn_lbl).reshape((trn_size, 10));
[INFO] [stdout]    |       ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_trn_lbl`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tst_img`
[INFO] [stdout]   --> src/main.rs:68:7
[INFO] [stdout]    |
[INFO] [stdout] 68 |   let tst_img = rcarr1(&tst_img).reshape((tst_size, rows * cols));
[INFO] [stdout]    |       ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_tst_img`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tst_lbl`
[INFO] [stdout]   --> src/main.rs:69:7
[INFO] [stdout]    |
[INFO] [stdout] 69 |   let tst_lbl = rcarr1(&tst_lbl).reshape((tst_size, 10));
[INFO] [stdout]    |       ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_tst_lbl`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 21.06s
[INFO] running `Command { std: "docker" "inspect" "90cb0f0c77920f8fdaf0e968e567eec3be4ee86a1b487c36daf8ca5ec9beb780", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "90cb0f0c77920f8fdaf0e968e567eec3be4ee86a1b487c36daf8ca5ec9beb780", kill_on_drop: false }`
[INFO] [stdout] 90cb0f0c77920f8fdaf0e968e567eec3be4ee86a1b487c36daf8ca5ec9beb780