[INFO] cloning repository https://github.com/LuisCardosoOliveira/parallel-computation
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/LuisCardosoOliveira/parallel-computation" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLuisCardosoOliveira%2Fparallel-computation", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLuisCardosoOliveira%2Fparallel-computation'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2e47987cb635c6045afff391fadf53a91af78875
[INFO] testing LuisCardosoOliveira/parallel-computation against beta-2022-04-10 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLuisCardosoOliveira%2Fparallel-computation" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/LuisCardosoOliveira/parallel-computation on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/LuisCardosoOliveira/parallel-computation
[INFO] finished tweaking git repo https://github.com/LuisCardosoOliveira/parallel-computation
[INFO] tweaked toml for git repo https://github.com/LuisCardosoOliveira/parallel-computation written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/LuisCardosoOliveira/parallel-computation already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "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-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3ef76a7db128fa0bbb7f1bf4d42eec9b1270c9bf7693d161b4a95cfc64ded2a4
[INFO] running `Command { std: "docker" "start" "-a" "3ef76a7db128fa0bbb7f1bf4d42eec9b1270c9bf7693d161b4a95cfc64ded2a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3ef76a7db128fa0bbb7f1bf4d42eec9b1270c9bf7693d161b4a95cfc64ded2a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ef76a7db128fa0bbb7f1bf4d42eec9b1270c9bf7693d161b4a95cfc64ded2a4", kill_on_drop: false }`
[INFO] [stdout] 3ef76a7db128fa0bbb7f1bf4d42eec9b1270c9bf7693d161b4a95cfc64ded2a4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7c226ad162866b3c1a3d08acaf77328642977dcdf3127a265cf933504bb937f0
[INFO] running `Command { std: "docker" "start" "-a" "7c226ad162866b3c1a3d08acaf77328642977dcdf3127a265cf933504bb937f0", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling parallel-exercise v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `frequency`
[INFO] [stdout]  --> src/main.rs:6:4
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn frequency(input: &[&str], worker_count: usize) -> HashMap<char, usize> {
[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 dev [unoptimized + debuginfo] target(s) in 0.87s
[INFO] running `Command { std: "docker" "inspect" "7c226ad162866b3c1a3d08acaf77328642977dcdf3127a265cf933504bb937f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7c226ad162866b3c1a3d08acaf77328642977dcdf3127a265cf933504bb937f0", kill_on_drop: false }`
[INFO] [stdout] 7c226ad162866b3c1a3d08acaf77328642977dcdf3127a265cf933504bb937f0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2dcb697eca3a5f5cf92e7fd5905e6482f53490f3896b66fb49402fd67359ef21
[INFO] running `Command { std: "docker" "start" "-a" "2dcb697eca3a5f5cf92e7fd5905e6482f53490f3896b66fb49402fd67359ef21", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling parallel-exercise v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `frequency`
[INFO] [stdout]  --> src/main.rs:6:4
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn frequency(input: &[&str], worker_count: usize) -> HashMap<char, usize> {
[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 0.36s
[INFO] [stderr]   Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/parallel_exercise-061e47bb3bffd9d4)
[INFO] running `Command { std: "docker" "inspect" "2dcb697eca3a5f5cf92e7fd5905e6482f53490f3896b66fb49402fd67359ef21", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2dcb697eca3a5f5cf92e7fd5905e6482f53490f3896b66fb49402fd67359ef21", kill_on_drop: false }`
[INFO] [stdout] 2dcb697eca3a5f5cf92e7fd5905e6482f53490f3896b66fb49402fd67359ef21
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] bc3113e4455bdea162b893ca20f0ffb1d77457dd59e9ede722b483d94f45dc42
[INFO] running `Command { std: "docker" "start" "-a" "bc3113e4455bdea162b893ca20f0ffb1d77457dd59e9ede722b483d94f45dc42", kill_on_drop: false }`
[INFO] [stderr] warning: function is never used: `frequency`
[INFO] [stderr]  --> src/main.rs:6:4
[INFO] [stderr]   |
[INFO] [stderr] 6 | fn frequency(input: &[&str], worker_count: usize) -> HashMap<char, usize> {
[INFO] [stderr]   |    ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `parallel-exercise` (bin "parallel-exercise" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/parallel_exercise-061e47bb3bffd9d4)
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "bc3113e4455bdea162b893ca20f0ffb1d77457dd59e9ede722b483d94f45dc42", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bc3113e4455bdea162b893ca20f0ffb1d77457dd59e9ede722b483d94f45dc42", kill_on_drop: false }`
[INFO] [stdout] bc3113e4455bdea162b893ca20f0ffb1d77457dd59e9ede722b483d94f45dc42