[INFO] cloning repository https://github.com/BrandonXZ/Rust_Crash_Course
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/BrandonXZ/Rust_Crash_Course" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBrandonXZ%2FRust_Crash_Course", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBrandonXZ%2FRust_Crash_Course'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f69def44f8792b1458deb61915f474d8060017f4
[INFO] testing BrandonXZ/Rust_Crash_Course 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%2FBrandonXZ%2FRust_Crash_Course" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/BrandonXZ/Rust_Crash_Course 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/BrandonXZ/Rust_Crash_Course
[INFO] finished tweaking git repo https://github.com/BrandonXZ/Rust_Crash_Course
[INFO] tweaked toml for git repo https://github.com/BrandonXZ/Rust_Crash_Course written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/BrandonXZ/Rust_Crash_Course 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] 7c4867d3c7b42189fd53c39c64ae2d0e31f1a0f5ad6aadc681a0cb358b18b8a1
[INFO] running `Command { std: "docker" "start" "-a" "7c4867d3c7b42189fd53c39c64ae2d0e31f1a0f5ad6aadc681a0cb358b18b8a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7c4867d3c7b42189fd53c39c64ae2d0e31f1a0f5ad6aadc681a0cb358b18b8a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7c4867d3c7b42189fd53c39c64ae2d0e31f1a0f5ad6aadc681a0cb358b18b8a1", kill_on_drop: false }`
[INFO] [stdout] 7c4867d3c7b42189fd53c39c64ae2d0e31f1a0f5ad6aadc681a0cb358b18b8a1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] 5c23ccdd24413f7c9d8d7bfddf22c70a6a41db7a2c5aff885f23d66ffdd75174
[INFO] running `Command { std: "docker" "start" "-a" "5c23ccdd24413f7c9d8d7bfddf22c70a6a41db7a2c5aff885f23d66ffdd75174", kill_on_drop: false }`
[INFO] [stderr]    Compiling rusty v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: enum is never used: `Result`
[INFO] [stdout]   --> src/error_handling.rs:28:6
[INFO] [stdout]    |
[INFO] [stdout] 28 | enum Result<T,E>{
[INFO] [stdout]    |      ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Options`
[INFO] [stdout]   --> src/error_handling.rs:33:6
[INFO] [stdout]    |
[INFO] [stdout] 33 | enum Options<T>{
[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 0.55s
[INFO] running `Command { std: "docker" "inspect" "5c23ccdd24413f7c9d8d7bfddf22c70a6a41db7a2c5aff885f23d66ffdd75174", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5c23ccdd24413f7c9d8d7bfddf22c70a6a41db7a2c5aff885f23d66ffdd75174", kill_on_drop: false }`
[INFO] [stdout] 5c23ccdd24413f7c9d8d7bfddf22c70a6a41db7a2c5aff885f23d66ffdd75174
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] 1c9729496b0be7e74c0894728022077dae423d6ea41d50fbaa6674071f478e90
[INFO] running `Command { std: "docker" "start" "-a" "1c9729496b0be7e74c0894728022077dae423d6ea41d50fbaa6674071f478e90", kill_on_drop: false }`
[INFO] [stderr]    Compiling rusty v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: enum is never used: `Result`
[INFO] [stdout]   --> src/error_handling.rs:28:6
[INFO] [stdout]    |
[INFO] [stdout] 28 | enum Result<T,E>{
[INFO] [stdout]    |      ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Options`
[INFO] [stdout]   --> src/error_handling.rs:33:6
[INFO] [stdout]    |
[INFO] [stdout] 33 | enum Options<T>{
[INFO] [stdout]    |      ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.23s
[INFO] [stderr]   Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/rusty-30eaf01b34bef63e)
[INFO] running `Command { std: "docker" "inspect" "1c9729496b0be7e74c0894728022077dae423d6ea41d50fbaa6674071f478e90", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1c9729496b0be7e74c0894728022077dae423d6ea41d50fbaa6674071f478e90", kill_on_drop: false }`
[INFO] [stdout] 1c9729496b0be7e74c0894728022077dae423d6ea41d50fbaa6674071f478e90
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] fc2283047e7248837601224fcfe1b76903b9b3daf40d886827bf1b54daac14f1
[INFO] running `Command { std: "docker" "start" "-a" "fc2283047e7248837601224fcfe1b76903b9b3daf40d886827bf1b54daac14f1", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: enum is never used: `Result`
[INFO] [stderr]   --> src/error_handling.rs:28:6
[INFO] [stderr]    |
[INFO] [stderr] 28 | enum Result<T,E>{
[INFO] [stderr]    |      ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `Options`
[INFO] [stderr]   --> src/error_handling.rs:33:6
[INFO] [stderr]    |
[INFO] [stderr] 33 | enum Options<T>{
[INFO] [stderr]    |      ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `rusty` (bin "rusty" test) generated 2 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rusty-30eaf01b34bef63e)
[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" "fc2283047e7248837601224fcfe1b76903b9b3daf40d886827bf1b54daac14f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fc2283047e7248837601224fcfe1b76903b9b3daf40d886827bf1b54daac14f1", kill_on_drop: false }`
[INFO] [stdout] fc2283047e7248837601224fcfe1b76903b9b3daf40d886827bf1b54daac14f1