[INFO] updating cached repository https://github.com/ksakiyama/my_first_rust
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/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] 379fa38916fc3eafbc7031ba21b1cbab75e1257e
[INFO] testing ksakiyama/my_first_rust against 1.38.0 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fksakiyama%2Fmy_first_rust" "work/builds/worker-0/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ksakiyama/my_first_rust on toolchain 1.38.0
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/ksakiyama/my_first_rust
[INFO] finished tweaking git repo https://github.com/ksakiyama/my_first_rust
[INFO] tweaked toml for git repo https://github.com/ksakiyama/my_first_rust written to work/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/ksakiyama/my_first_rust already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-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" "+1.38.0" "build" "--frozen"`
[INFO] [stdout] 0b454bfe847199914a3938f566de4eda3f1f0dade44c913e9f93340c8840dc6b
[INFO] running `"docker" "start" "-a" "0b454bfe847199914a3938f566de4eda3f1f0dade44c913e9f93340c8840dc6b"`
[INFO] [stderr]    Compiling first_rust v0.1.0 (/opt/rustwide/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 0.50s
[INFO] running `"docker" "inspect" "0b454bfe847199914a3938f566de4eda3f1f0dade44c913e9f93340c8840dc6b"`
[INFO] running `"docker" "rm" "-f" "0b454bfe847199914a3938f566de4eda3f1f0dade44c913e9f93340c8840dc6b"`
[INFO] [stdout] 0b454bfe847199914a3938f566de4eda3f1f0dade44c913e9f93340c8840dc6b
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-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" "+1.38.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] ba5c653114bd18b43d2368f3101575c17819cbeabb5fe1e562e9afeb399ca901
[INFO] running `"docker" "start" "-a" "ba5c653114bd18b43d2368f3101575c17819cbeabb5fe1e562e9afeb399ca901"`
[INFO] [stderr]    Compiling first_rust v0.1.0 (/opt/rustwide/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 1.10s
[INFO] running `"docker" "inspect" "ba5c653114bd18b43d2368f3101575c17819cbeabb5fe1e562e9afeb399ca901"`
[INFO] running `"docker" "rm" "-f" "ba5c653114bd18b43d2368f3101575c17819cbeabb5fe1e562e9afeb399ca901"`
[INFO] [stdout] ba5c653114bd18b43d2368f3101575c17819cbeabb5fe1e562e9afeb399ca901
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-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" "+1.38.0" "test" "--frozen"`
[INFO] [stdout] b9d53d6d5544f0ace78e8719a75c2a3567eac0f9b6572c81add8c3b76fd778e5
[INFO] running `"docker" "start" "-a" "b9d53d6d5544f0ace78e8719a75c2a3567eac0f9b6572c81add8c3b76fd778e5"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/first_rust-50d1a15d852a6abf
[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" "b9d53d6d5544f0ace78e8719a75c2a3567eac0f9b6572c81add8c3b76fd778e5"`
[INFO] running `"docker" "rm" "-f" "b9d53d6d5544f0ace78e8719a75c2a3567eac0f9b6572c81add8c3b76fd778e5"`
[INFO] [stdout] b9d53d6d5544f0ace78e8719a75c2a3567eac0f9b6572c81add8c3b76fd778e5