[INFO] cloning repository https://github.com/SpBills/cyber-1000-lab-1
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/SpBills/cyber-1000-lab-1" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSpBills%2Fcyber-1000-lab-1", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSpBills%2Fcyber-1000-lab-1'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ed5940239ec4e589f4b697ad1877af15ffa780b5
[INFO] testing SpBills/cyber-1000-lab-1 against beta-2021-09-08 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSpBills%2Fcyber-1000-lab-1" "/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/SpBills/cyber-1000-lab-1 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/SpBills/cyber-1000-lab-1
[INFO] finished tweaking git repo https://github.com/SpBills/cyber-1000-lab-1
[INFO] tweaked toml for git repo https://github.com/SpBills/cyber-1000-lab-1 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/SpBills/cyber-1000-lab-1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 43ea28b448622902aafc74a05b06c700a4ea8c04d3f6a76886f89717b866c13a
[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" "43ea28b448622902aafc74a05b06c700a4ea8c04d3f6a76886f89717b866c13a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "43ea28b448622902aafc74a05b06c700a4ea8c04d3f6a76886f89717b866c13a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "43ea28b448622902aafc74a05b06c700a4ea8c04d3f6a76886f89717b866c13a", kill_on_drop: false }`
[INFO] [stdout] 43ea28b448622902aafc74a05b06c700a4ea8c04d3f6a76886f89717b866c13a
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 19890a63d4f7bdc4674806cb89b0b666479dfb567109f06cc1a5d3ec2bad6b4a
[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" "19890a63d4f7bdc4674806cb89b0b666479dfb567109f06cc1a5d3ec2bad6b4a", kill_on_drop: false }`
[INFO] [stderr]    Compiling base64 v0.13.0
[INFO] [stderr]    Compiling bmp v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/main.rs:35:13
[INFO] [stdout]    |
[INFO] [stdout] 35 |             &final_str.push_str(&format!("{}", bin_rep));
[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] 35 |             let _ = &final_str.push_str(&format!("{}", bin_rep));
[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 1.79s
[INFO] running `Command { std: "docker" "inspect" "19890a63d4f7bdc4674806cb89b0b666479dfb567109f06cc1a5d3ec2bad6b4a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "19890a63d4f7bdc4674806cb89b0b666479dfb567109f06cc1a5d3ec2bad6b4a", kill_on_drop: false }`
[INFO] [stdout] 19890a63d4f7bdc4674806cb89b0b666479dfb567109f06cc1a5d3ec2bad6b4a
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ad5e90e20c8bb44b29a7fd47629050c517cad103818054a5cafcc506a74d5fed
[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" "ad5e90e20c8bb44b29a7fd47629050c517cad103818054a5cafcc506a74d5fed", kill_on_drop: false }`
[INFO] [stderr]    Compiling bmp v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/main.rs:35:13
[INFO] [stdout]    |
[INFO] [stdout] 35 |             &final_str.push_str(&format!("{}", bin_rep));
[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] 35 |             let _ = &final_str.push_str(&format!("{}", bin_rep));
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.88s
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "ad5e90e20c8bb44b29a7fd47629050c517cad103818054a5cafcc506a74d5fed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ad5e90e20c8bb44b29a7fd47629050c517cad103818054a5cafcc506a74d5fed", kill_on_drop: false }`
[INFO] [stdout] ad5e90e20c8bb44b29a7fd47629050c517cad103818054a5cafcc506a74d5fed
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 30a02c3823bd156f8a63e0758141649d96e66adcce2bbc91d22353940083401f
[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" "30a02c3823bd156f8a63e0758141649d96e66adcce2bbc91d22353940083401f", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: unused borrow that must be used
[INFO] [stdout] running 0 tests
[INFO] [stderr]   --> src/main.rs:35:13
[INFO] [stdout] 
[INFO] [stderr]    |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] 35 |             &final_str.push_str(&format!("{}", bin_rep));
[INFO] [stdout] 
[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] 35 |             let _ = &final_str.push_str(&format!("{}", bin_rep));
[INFO] [stderr]    |             +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `bmp` (bin "bmp" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/bmp-a3797a3e1ab34172)
[INFO] running `Command { std: "docker" "inspect" "30a02c3823bd156f8a63e0758141649d96e66adcce2bbc91d22353940083401f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "30a02c3823bd156f8a63e0758141649d96e66adcce2bbc91d22353940083401f", kill_on_drop: false }`
[INFO] [stdout] 30a02c3823bd156f8a63e0758141649d96e66adcce2bbc91d22353940083401f