[INFO] cloning repository https://github.com/mwttg/rust-99-problems
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mwttg/rust-99-problems" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmwttg%2Frust-99-problems", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmwttg%2Frust-99-problems'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3b72ee8ac58d67f537732428ece0e1877ec0d573
[INFO] testing mwttg/rust-99-problems against 1.49.0 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmwttg%2Frust-99-problems" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mwttg/rust-99-problems on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mwttg/rust-99-problems
[INFO] finished tweaking git repo https://github.com/mwttg/rust-99-problems
[INFO] tweaked toml for git repo https://github.com/mwttg/rust-99-problems written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/mwttg/rust-99-problems already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "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] 7c00e2921fc87f0efd76e816150b9a4e24ffc10069ddaf68dc34b402f09b46d9
[INFO] running `Command { std: "docker" "start" "-a" "7c00e2921fc87f0efd76e816150b9a4e24ffc10069ddaf68dc34b402f09b46d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7c00e2921fc87f0efd76e816150b9a4e24ffc10069ddaf68dc34b402f09b46d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7c00e2921fc87f0efd76e816150b9a4e24ffc10069ddaf68dc34b402f09b46d9", kill_on_drop: false }`
[INFO] [stdout] 7c00e2921fc87f0efd76e816150b9a4e24ffc10069ddaf68dc34b402f09b46d9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7fb9b194df0b526c6f2574c92faf562ab748564aca57a56307f6510478c1c75a
[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" "7fb9b194df0b526c6f2574c92faf562ab748564aca57a56307f6510478c1c75a", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-99-problems v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.28s
[INFO] running `Command { std: "docker" "inspect" "7fb9b194df0b526c6f2574c92faf562ab748564aca57a56307f6510478c1c75a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7fb9b194df0b526c6f2574c92faf562ab748564aca57a56307f6510478c1c75a", kill_on_drop: false }`
[INFO] [stdout] 7fb9b194df0b526c6f2574c92faf562ab748564aca57a56307f6510478c1c75a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5e7af827d102a115ba06d3211a647a858fb6873207469dc6aceb1e3ee1d96c9c
[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" "5e7af827d102a115ba06d3211a647a858fb6873207469dc6aceb1e3ee1d96c9c", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-99-problems v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `length_recursive_empty_input`
[INFO] [stdout]   --> src/p04/mod.rs:52:8
[INFO] [stdout]    |
[INFO] [stdout] 52 |     fn length_recursive_empty_input() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.26s
[INFO] running `Command { std: "docker" "inspect" "5e7af827d102a115ba06d3211a647a858fb6873207469dc6aceb1e3ee1d96c9c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e7af827d102a115ba06d3211a647a858fb6873207469dc6aceb1e3ee1d96c9c", kill_on_drop: false }`
[INFO] [stdout] 5e7af827d102a115ba06d3211a647a858fb6873207469dc6aceb1e3ee1d96c9c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] c63f17aa5e965056a5d40753610d22b13bef1d32ed78a220d7d98e2d394b9b55
[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" "c63f17aa5e965056a5d40753610d22b13bef1d32ed78a220d7d98e2d394b9b55", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: function is never used: `length_recursive_empty_input`
[INFO] [stdout] running 20 tests
[INFO] [stderr]   --> src/p04/mod.rs:52:8
[INFO] [stdout] test p01::tests::test_find_last_functional_empty_input ... ok
[INFO] [stderr]    |
[INFO] [stdout] test p01::tests::find_last_recursive_empty_input ... ok
[INFO] [stderr] 52 |     fn length_recursive_empty_input() {
[INFO] [stdout] test p01::tests::find_last_recursive_input_of_size_one ... ok
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] test p02::tests::penultimate_valid_input_string ... ok
[INFO] [stderr]    |
[INFO] [stdout] test p03::tests::nth_empty_vec ... ok
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] test p03::tests::nth_recursive_empty_vec ... ok
[INFO] [stderr] 
[INFO] [stdout] test p03::tests::nth_recursive_valid_input ... ok
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stdout] test p03::tests::nth_valid_input ... ok
[INFO] [stderr] 
[INFO] [stdout] test p04::tests::length_empty_input ... ok
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stdout] test p04::tests::length_recursive_valid_input ... ok
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/rust_99_problems-d9fab1c12a344549
[INFO] [stdout] test p01::tests::find_last_recursive_valid_input ... ok
[INFO] [stdout] test p05::tests::reverse_with_empty_input ... ok
[INFO] [stdout] test p04::tests::length_valid_input ... ok
[INFO] [stdout] test p02::tests::penultimate_valid_empty_input ... ok
[INFO] [stdout] test p05::tests::reverse_recursive_valid_input ... ok
[INFO] [stdout] test p05::tests::reverse_valid_vec ... ok
[INFO] [stdout] test p01::tests::test_find_last_functional_valid_input ... ok
[INFO] [stdout] test p05::tests::reverse_recursive_with_empty_input ... ok
[INFO] [stdout] test p02::tests::penultimate_valid_input_of_size_one ... ok
[INFO] [stdout] test p02::tests::penultimate_valid_input_int ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 20 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "c63f17aa5e965056a5d40753610d22b13bef1d32ed78a220d7d98e2d394b9b55", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c63f17aa5e965056a5d40753610d22b13bef1d32ed78a220d7d98e2d394b9b55", kill_on_drop: false }`
[INFO] [stdout] c63f17aa5e965056a5d40753610d22b13bef1d32ed78a220d7d98e2d394b9b55