[INFO] cloning repository https://github.com/agrism/learn-rust-1
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/agrism/learn-rust-1" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fagrism%2Flearn-rust-1", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fagrism%2Flearn-rust-1'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9001afb992827eba8b7c3bdcefde5dc0da26d27e
[INFO] testing agrism/learn-rust-1 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%2Fagrism%2Flearn-rust-1" "/workspace/builds/worker-29/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-29/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/agrism/learn-rust-1 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/agrism/learn-rust-1
[INFO] finished tweaking git repo https://github.com/agrism/learn-rust-1
[INFO] tweaked toml for git repo https://github.com/agrism/learn-rust-1 written to /workspace/builds/worker-29/source/Cargo.toml
[INFO] crate git repo https://github.com/agrism/learn-rust-1 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-29/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/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] 71be3a2727b3fb404c613cd62a495cfa9cddb5c08a87805596b1e166fd32c02b
[INFO] running `Command { std: "docker" "start" "-a" "71be3a2727b3fb404c613cd62a495cfa9cddb5c08a87805596b1e166fd32c02b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "71be3a2727b3fb404c613cd62a495cfa9cddb5c08a87805596b1e166fd32c02b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "71be3a2727b3fb404c613cd62a495cfa9cddb5c08a87805596b1e166fd32c02b", kill_on_drop: false }`
[INFO] [stdout] 71be3a2727b3fb404c613cd62a495cfa9cddb5c08a87805596b1e166fd32c02b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/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] ab7f41a0a46f0d8392fd3904182741a4cd6ab46d33908299c04a19ba9608172e
[INFO] running `Command { std: "docker" "start" "-a" "ab7f41a0a46f0d8392fd3904182741a4cd6ab46d33908299c04a19ba9608172e", kill_on_drop: false }`
[INFO] [stderr]    Compiling learn1 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/employee.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |         &self.employees.push(employee);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 20 |         let _ = &self.employees.push(employee);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.65s
[INFO] running `Command { std: "docker" "inspect" "ab7f41a0a46f0d8392fd3904182741a4cd6ab46d33908299c04a19ba9608172e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ab7f41a0a46f0d8392fd3904182741a4cd6ab46d33908299c04a19ba9608172e", kill_on_drop: false }`
[INFO] [stdout] ab7f41a0a46f0d8392fd3904182741a4cd6ab46d33908299c04a19ba9608172e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/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] 50cbbcb5e084095220299bece2adcfb77f8fd919c8f3f4c05971d043882af61e
[INFO] running `Command { std: "docker" "start" "-a" "50cbbcb5e084095220299bece2adcfb77f8fd919c8f3f4c05971d043882af61e", kill_on_drop: false }`
[INFO] [stderr]    Compiling learn1 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/employee.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |         &self.employees.push(employee);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 20 |         let _ = &self.employees.push(employee);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.55s
[INFO] [stderr]   Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/learn1-dbb2b951660abb97)
[INFO] running `Command { std: "docker" "inspect" "50cbbcb5e084095220299bece2adcfb77f8fd919c8f3f4c05971d043882af61e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "50cbbcb5e084095220299bece2adcfb77f8fd919c8f3f4c05971d043882af61e", kill_on_drop: false }`
[INFO] [stdout] 50cbbcb5e084095220299bece2adcfb77f8fd919c8f3f4c05971d043882af61e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/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] a2ca5f0e7d5059a14a3a7dae8e2b0e5a708a0e10d55339de84505ffa3f51106f
[INFO] running `Command { std: "docker" "start" "-a" "a2ca5f0e7d5059a14a3a7dae8e2b0e5a708a0e10d55339de84505ffa3f51106f", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: unused borrow that must be used
[INFO] [stderr]   --> src/employee.rs:20:9
[INFO] [stderr]    |
[INFO] [stderr] 20 |         &self.employees.push(employee);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 20 |         let _ = &self.employees.push(employee);
[INFO] [stderr]    |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `learn1` (bin "learn1" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/learn1-dbb2b951660abb97)
[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" "a2ca5f0e7d5059a14a3a7dae8e2b0e5a708a0e10d55339de84505ffa3f51106f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a2ca5f0e7d5059a14a3a7dae8e2b0e5a708a0e10d55339de84505ffa3f51106f", kill_on_drop: false }`
[INFO] [stdout] a2ca5f0e7d5059a14a3a7dae8e2b0e5a708a0e10d55339de84505ffa3f51106f