[INFO] updating cached repository dwnusbaum/Rust-2048
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/dwnusbaum/Rust-2048
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/dwnusbaum/Rust-2048" "work/ex/beta-1.38-1/sources/1.37.0/gh/dwnusbaum/Rust-2048"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/dwnusbaum/Rust-2048'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/dwnusbaum/Rust-2048" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/dwnusbaum/Rust-2048"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/dwnusbaum/Rust-2048'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 8a20240fd5f283e83cb8c4950bc9798c2f8e0241
[INFO] sha for GitHub repo dwnusbaum/Rust-2048: 8a20240fd5f283e83cb8c4950bc9798c2f8e0241
[INFO] validating manifest of dwnusbaum/Rust-2048 on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of dwnusbaum/Rust-2048 on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing dwnusbaum/Rust-2048
[INFO] finished frobbing dwnusbaum/Rust-2048
[INFO] frobbed toml for dwnusbaum/Rust-2048 written to work/ex/beta-1.38-1/sources/1.37.0/gh/dwnusbaum/Rust-2048/Cargo.toml
[INFO] started frobbing dwnusbaum/Rust-2048
[INFO] finished frobbing dwnusbaum/Rust-2048
[INFO] frobbed toml for dwnusbaum/Rust-2048 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/dwnusbaum/Rust-2048/Cargo.toml
[INFO] crate dwnusbaum/Rust-2048 already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/dwnusbaum/Rust-2048/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing dwnusbaum/Rust-2048 against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/dwnusbaum/Rust-2048:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 36dbcd6f97cb1a1d705d44fec33ea2a37be5a6af4b0522abe59b122dc8a67309
[INFO] running `"docker" "start" "-a" "36dbcd6f97cb1a1d705d44fec33ea2a37be5a6af4b0522abe59b122dc8a67309"`
[INFO] [stderr]    Compiling getrandom v0.1.10
[INFO] [stderr]    Compiling c2-chacha v0.2.2
[INFO] [stderr]    Compiling rand_core v0.5.0
[INFO] [stderr]    Compiling rand_chacha v0.2.1
[INFO] [stderr]    Compiling rand v0.7.0
[INFO] [stderr]    Compiling Rust-2048 v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]   --> src/main.rs:67:19
[INFO] [stderr]    |
[INFO] [stderr] 67 |     for column in (0..4) {
[INFO] [stderr]    |                   ^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_parens)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]   --> src/main.rs:69:20
[INFO] [stderr]    |
[INFO] [stderr] 69 |         for row in (0..4) {
[INFO] [stderr]    |                    ^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/main.rs:145:11
[INFO] [stderr]     |
[INFO] [stderr] 145 |         1 ... 9 => 2,
[INFO] [stderr]     |           ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(ellipsis_inclusive_range_patterns)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: crate `Rust_2048` should have a snake case name
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(non_snake_case)] on by default
[INFO] [stderr]   = help: convert the identifier to snake case: `rust_2048`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.24s
[INFO] running `"docker" "inspect" "36dbcd6f97cb1a1d705d44fec33ea2a37be5a6af4b0522abe59b122dc8a67309"`
[INFO] running `"docker" "rm" "-f" "36dbcd6f97cb1a1d705d44fec33ea2a37be5a6af4b0522abe59b122dc8a67309"`
[INFO] [stdout] 36dbcd6f97cb1a1d705d44fec33ea2a37be5a6af4b0522abe59b122dc8a67309
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/dwnusbaum/Rust-2048:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] abe62d7f6298877bfd1fba271bd1f3bd52b57ffb362e37e8a3ff2a9e31ebf210
[INFO] running `"docker" "start" "-a" "abe62d7f6298877bfd1fba271bd1f3bd52b57ffb362e37e8a3ff2a9e31ebf210"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling Rust-2048 v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]   --> src/main.rs:67:19
[INFO] [stderr]    |
[INFO] [stderr] 67 |     for column in (0..4) {
[INFO] [stderr]    |                   ^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_parens)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]   --> src/main.rs:69:20
[INFO] [stderr]    |
[INFO] [stderr] 69 |         for row in (0..4) {
[INFO] [stderr]    |                    ^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/main.rs:145:11
[INFO] [stderr]     |
[INFO] [stderr] 145 |         1 ... 9 => 2,
[INFO] [stderr]     |           ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(ellipsis_inclusive_range_patterns)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: crate `Rust_2048` should have a snake case name
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(non_snake_case)] on by default
[INFO] [stderr]   = help: convert the identifier to snake case: `rust_2048`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.78s
[INFO] running `"docker" "inspect" "abe62d7f6298877bfd1fba271bd1f3bd52b57ffb362e37e8a3ff2a9e31ebf210"`
[INFO] running `"docker" "rm" "-f" "abe62d7f6298877bfd1fba271bd1f3bd52b57ffb362e37e8a3ff2a9e31ebf210"`
[INFO] [stdout] abe62d7f6298877bfd1fba271bd1f3bd52b57ffb362e37e8a3ff2a9e31ebf210
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/dwnusbaum/Rust-2048:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 74c18b50d6c525e7c3e19fdc327290fa5cb7915b30dbbf6c6f3ef1e2073bc9cd
[INFO] running `"docker" "start" "-a" "74c18b50d6c525e7c3e19fdc327290fa5cb7915b30dbbf6c6f3ef1e2073bc9cd"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/Rust_2048-ea626ae396719b6c
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "74c18b50d6c525e7c3e19fdc327290fa5cb7915b30dbbf6c6f3ef1e2073bc9cd"`
[INFO] running `"docker" "rm" "-f" "74c18b50d6c525e7c3e19fdc327290fa5cb7915b30dbbf6c6f3ef1e2073bc9cd"`
[INFO] [stdout] 74c18b50d6c525e7c3e19fdc327290fa5cb7915b30dbbf6c6f3ef1e2073bc9cd