[INFO] updating cached repository ksakiyama/my_first_rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/ksakiyama/my_first_rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/ksakiyama/my_first_rust" "work/ex/beta-1.37-6/sources/1.36.0/gh/ksakiyama/my_first_rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/ksakiyama/my_first_rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/ksakiyama/my_first_rust" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/ksakiyama/my_first_rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/ksakiyama/my_first_rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 379fa38916fc3eafbc7031ba21b1cbab75e1257e
[INFO] sha for GitHub repo ksakiyama/my_first_rust: 379fa38916fc3eafbc7031ba21b1cbab75e1257e
[INFO] validating manifest of ksakiyama/my_first_rust on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of ksakiyama/my_first_rust on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing ksakiyama/my_first_rust
[INFO] finished frobbing ksakiyama/my_first_rust
[INFO] frobbed toml for ksakiyama/my_first_rust written to work/ex/beta-1.37-6/sources/1.36.0/gh/ksakiyama/my_first_rust/Cargo.toml
[INFO] started frobbing ksakiyama/my_first_rust
[INFO] finished frobbing ksakiyama/my_first_rust
[INFO] frobbed toml for ksakiyama/my_first_rust written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/ksakiyama/my_first_rust/Cargo.toml
[INFO] crate ksakiyama/my_first_rust already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing ksakiyama/my_first_rust against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/ksakiyama/my_first_rust:/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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] e6100cfd83de86c71fa90bb5f1d5231879ace92de8cc3e570865c025c4682c65
[INFO] running `"docker" "start" "-a" "e6100cfd83de86c71fa90bb5f1d5231879ace92de8cc3e570865c025c4682c65"`
[INFO] [stderr]    Compiling first_rust v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: function is never used: `read_from_file`
[INFO] [stderr]    --> src/main.rs:101:1
[INFO] [stderr]     |
[INFO] [stderr] 101 | fn read_from_file() -> Vec<Vec<i32>> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.19s
[INFO] running `"docker" "inspect" "e6100cfd83de86c71fa90bb5f1d5231879ace92de8cc3e570865c025c4682c65"`
[INFO] running `"docker" "rm" "-f" "e6100cfd83de86c71fa90bb5f1d5231879ace92de8cc3e570865c025c4682c65"`
[INFO] [stdout] e6100cfd83de86c71fa90bb5f1d5231879ace92de8cc3e570865c025c4682c65
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/ksakiyama/my_first_rust:/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" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 587673152a49633943b81f723baa6ed1e4256e4492c158b900d6062da2ec92c6
[INFO] running `"docker" "start" "-a" "587673152a49633943b81f723baa6ed1e4256e4492c158b900d6062da2ec92c6"`
[INFO] [stderr]    Compiling first_rust v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: function is never used: `read_from_file`
[INFO] [stderr]    --> src/main.rs:101:1
[INFO] [stderr]     |
[INFO] [stderr] 101 | fn read_from_file() -> Vec<Vec<i32>> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.90s
[INFO] running `"docker" "inspect" "587673152a49633943b81f723baa6ed1e4256e4492c158b900d6062da2ec92c6"`
[INFO] running `"docker" "rm" "-f" "587673152a49633943b81f723baa6ed1e4256e4492c158b900d6062da2ec92c6"`
[INFO] [stdout] 587673152a49633943b81f723baa6ed1e4256e4492c158b900d6062da2ec92c6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/ksakiyama/my_first_rust:/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" "+1.36.0" "test" "--frozen"`
[INFO] [stdout] 5e8477da4adab063c76681d4d705482fd8b19926df7303a97196353635940cb3
[INFO] running `"docker" "start" "-a" "5e8477da4adab063c76681d4d705482fd8b19926df7303a97196353635940cb3"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/first_rust-86db7e230eb85e0f
[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" "5e8477da4adab063c76681d4d705482fd8b19926df7303a97196353635940cb3"`
[INFO] running `"docker" "rm" "-f" "5e8477da4adab063c76681d4d705482fd8b19926df7303a97196353635940cb3"`
[INFO] [stdout] 5e8477da4adab063c76681d4d705482fd8b19926df7303a97196353635940cb3