[INFO] updating cached repository https://github.com/kitagry/rust-deep-learning
[INFO] running `"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"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 7e37fb00e07d650cd8fdfc6ed8771d2a0f6527fd
[INFO] checking kitagry/rust-deep-learning against master#bd0bacc694d7d8175804bb6f690cb846bfa4a9ee for pr-71665
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkitagry%2Frust-deep-learning" "/workspace/builds/worker-7/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kitagry/rust-deep-learning on toolchain bd0bacc694d7d8175804bb6f690cb846bfa4a9ee
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bd0bacc694d7d8175804bb6f690cb846bfa4a9ee" "read-manifest" "--manifest-path" "Cargo.toml"`
[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-7/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 `"/workspace/cargo-home/bin/cargo" "+bd0bacc694d7d8175804bb6f690cb846bfa4a9ee" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "/opt/rustwide/cargo-home/bin/cargo" "+bd0bacc694d7d8175804bb6f690cb846bfa4a9ee" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 4b5d30da1bf129623d76ceadd1b452d56b9cdf506c7df7da5a490fd6c151ce77
[INFO] running `"docker" "start" "-a" "4b5d30da1bf129623d76ceadd1b452d56b9cdf506c7df7da5a490fd6c151ce77"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling libc v0.2.65
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]    Compiling num-derive v0.2.5
[INFO] [stderr]    Compiling crc32fast v1.2.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.6
[INFO] [stderr]     Checking lzw v0.10.0
[INFO] [stderr]    Compiling ndarray v0.13.0
[INFO] [stderr]     Checking color_quant v1.0.1
[INFO] [stderr]     Checking rawpointer v0.2.1
[INFO] [stderr]     Checking scoped_threadpool v0.1.9
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling num-iter v0.1.39
[INFO] [stderr]    Compiling num-rational v0.2.2
[INFO] [stderr]    Compiling num-complex v0.2.3
[INFO] [stderr]     Checking inflate v0.4.5
[INFO] [stderr]     Checking matrixmultiply v0.2.3
[INFO] [stderr]     Checking itertools v0.8.0
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]     Checking gif v0.10.3
[INFO] [stderr]     Checking deflate v0.7.20
[INFO] [stderr]     Checking mnist v0.4.0
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]     Checking c2-chacha v0.2.3
[INFO] [stderr]    Compiling memoffset v0.5.1
[INFO] [stderr]     Checking png v0.15.0
[INFO] [stderr]     Checking num_cpus v1.10.1
[INFO] [stderr]     Checking getrandom v0.1.13
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]     Checking crossbeam-epoch v0.7.2
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking crossbeam-deque v0.7.1
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking rand v0.7.2
[INFO] [stderr]     Checking rayon-core v1.6.0
[INFO] [stderr]     Checking rayon v1.2.0
[INFO] [stderr]     Checking jpeg-decoder v0.1.16
[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] [stderr] warning: unused variable: `trn_lbl`
[INFO] [stderr]   --> src/main.rs:67:7
[INFO] [stderr]    |
[INFO] [stderr] 67 |   let trn_lbl = rcarr1(&trn_lbl).reshape((trn_size, 10));
[INFO] [stderr]    |       ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_trn_lbl`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `tst_img`
[INFO] [stderr]   --> src/main.rs:68:7
[INFO] [stderr]    |
[INFO] [stderr] 68 |   let tst_img = rcarr1(&tst_img).reshape((tst_size, rows * cols));
[INFO] [stderr]    |       ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_tst_img`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `tst_lbl`
[INFO] [stderr]   --> src/main.rs:69:7
[INFO] [stderr]    |
[INFO] [stderr] 69 |   let tst_lbl = rcarr1(&tst_lbl).reshape((tst_size, 10));
[INFO] [stderr]    |       ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_tst_lbl`
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `trn_lbl`
[INFO] [stderr]   --> src/main.rs:67:7
[INFO] [stderr]    |
[INFO] [stderr] 67 |   let trn_lbl = rcarr1(&trn_lbl).reshape((trn_size, 10));
[INFO] [stderr]    |       ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_trn_lbl`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `tst_img`
[INFO] [stderr]   --> src/main.rs:68:7
[INFO] [stderr]    |
[INFO] [stderr] 68 |   let tst_img = rcarr1(&tst_img).reshape((tst_size, rows * cols));
[INFO] [stderr]    |       ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_tst_img`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `tst_lbl`
[INFO] [stderr]   --> src/main.rs:69:7
[INFO] [stderr]    |
[INFO] [stderr] 69 |   let tst_lbl = rcarr1(&tst_lbl).reshape((tst_size, 10));
[INFO] [stderr]    |       ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_tst_lbl`
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 39.80s
[INFO] running `"docker" "inspect" "4b5d30da1bf129623d76ceadd1b452d56b9cdf506c7df7da5a490fd6c151ce77"`
[INFO] running `"docker" "rm" "-f" "4b5d30da1bf129623d76ceadd1b452d56b9cdf506c7df7da5a490fd6c151ce77"`
[INFO] [stdout] 4b5d30da1bf129623d76ceadd1b452d56b9cdf506c7df7da5a490fd6c151ce77