[INFO] cloning repository https://github.com/euclidthedark/learning-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/euclidthedark/learning-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Feuclidthedark%2Flearning-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Feuclidthedark%2Flearning-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0f848cd1b646657e51ad729e7783eea65a88483d
[INFO] testing euclidthedark/learning-rust against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Feuclidthedark%2Flearning-rust" "/workspace/builds/worker-56/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-56/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/euclidthedark/learning-rust on toolchain a77da2d454e6caa227a85b16410b95f93495e7e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/euclidthedark/learning-rust
[INFO] finished tweaking git repo https://github.com/euclidthedark/learning-rust
[INFO] tweaked toml for git repo https://github.com/euclidthedark/learning-rust written to /workspace/builds/worker-56/source/Cargo.toml
[INFO] crate git repo https://github.com/euclidthedark/learning-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-56/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-56/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 98f0c124f9cf94004734005732f16cb87a49055eac4c409701c382b5c92aa27f
[INFO] running `Command { std: "docker" "start" "-a" "98f0c124f9cf94004734005732f16cb87a49055eac4c409701c382b5c92aa27f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "98f0c124f9cf94004734005732f16cb87a49055eac4c409701c382b5c92aa27f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "98f0c124f9cf94004734005732f16cb87a49055eac4c409701c382b5c92aa27f", kill_on_drop: false }`
[INFO] [stdout] 98f0c124f9cf94004734005732f16cb87a49055eac4c409701c382b5c92aa27f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-56/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-56/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=forbid" "-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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0bc60913d9f51f82b790323f9db423e0c001b5baaad46dfab6e91bff271d8c05
[INFO] running `Command { std: "docker" "start" "-a" "0bc60913d9f51f82b790323f9db423e0c001b5baaad46dfab6e91bff271d8c05", kill_on_drop: false }`
[INFO] [stderr]    Compiling learning-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `find_two_number_sum_with_hash_map`
[INFO] [stdout]  --> src/math/sums.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn find_two_number_sum_with_hash_map(target: i32, integer_vector: &Vec<i32>) -> Option<(i32, i32)> {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `find_two_number_sum_with_pointers`
[INFO] [stdout]   --> src/math/sums.rs:23:4
[INFO] [stdout]    |
[INFO] [stdout] 23 | fn find_two_number_sum_with_pointers(target: i32, integer_vector: &Vec<i32>) -> Option<(i32, i32)> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.49s
[INFO] running `Command { std: "docker" "inspect" "0bc60913d9f51f82b790323f9db423e0c001b5baaad46dfab6e91bff271d8c05", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0bc60913d9f51f82b790323f9db423e0c001b5baaad46dfab6e91bff271d8c05", kill_on_drop: false }`
[INFO] [stdout] 0bc60913d9f51f82b790323f9db423e0c001b5baaad46dfab6e91bff271d8c05
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-56/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-56/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=forbid" "-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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fb09f654b888815b7f6dcab68ac5723bb11df3e667406e09c912a9858874484d
[INFO] running `Command { std: "docker" "start" "-a" "fb09f654b888815b7f6dcab68ac5723bb11df3e667406e09c912a9858874484d", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling learning-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.36s
[INFO] running `Command { std: "docker" "inspect" "fb09f654b888815b7f6dcab68ac5723bb11df3e667406e09c912a9858874484d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fb09f654b888815b7f6dcab68ac5723bb11df3e667406e09c912a9858874484d", kill_on_drop: false }`
[INFO] [stdout] fb09f654b888815b7f6dcab68ac5723bb11df3e667406e09c912a9858874484d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-56/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-56/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=forbid" "-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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] bfb3b44fda843845a8206d8f98a6ce04c8f0abb7dad09d2f1a43d52bb3bfe588
[INFO] running `Command { std: "docker" "start" "-a" "bfb3b44fda843845a8206d8f98a6ce04c8f0abb7dad09d2f1a43d52bb3bfe588", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.98s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/learning_rust-1355ebca1ff43996)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test math::sums::test::when_given_a_target_and_a_vector_of_ints_using_hash_map ... ok
[INFO] [stdout] test math::sums::test::when_given_a_target_and_a_vector_of_ints_using_pointers ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "bfb3b44fda843845a8206d8f98a6ce04c8f0abb7dad09d2f1a43d52bb3bfe588", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bfb3b44fda843845a8206d8f98a6ce04c8f0abb7dad09d2f1a43d52bb3bfe588", kill_on_drop: false }`
[INFO] [stdout] bfb3b44fda843845a8206d8f98a6ce04c8f0abb7dad09d2f1a43d52bb3bfe588