[INFO] cloning repository https://github.com/assalielmehdi/maximum-number-of-balloons
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/assalielmehdi/maximum-number-of-balloons" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fassalielmehdi%2Fmaximum-number-of-balloons", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fassalielmehdi%2Fmaximum-number-of-balloons'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d2ec7f5964246f31bf2320532d022cf3da98607f
[INFO] testing assalielmehdi/maximum-number-of-balloons against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fassalielmehdi%2Fmaximum-number-of-balloons" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/assalielmehdi/maximum-number-of-balloons on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/assalielmehdi/maximum-number-of-balloons
[INFO] finished tweaking git repo https://github.com/assalielmehdi/maximum-number-of-balloons
[INFO] tweaked toml for git repo https://github.com/assalielmehdi/maximum-number-of-balloons written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/assalielmehdi/maximum-number-of-balloons already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] fc9177d647f6b460b810afd8642f079f721b937a9f3d37227fa9bfdecc5cd42c
[INFO] running `Command { std: "docker" "start" "-a" "fc9177d647f6b460b810afd8642f079f721b937a9f3d37227fa9bfdecc5cd42c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fc9177d647f6b460b810afd8642f079f721b937a9f3d37227fa9bfdecc5cd42c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fc9177d647f6b460b810afd8642f079f721b937a9f3d37227fa9bfdecc5cd42c", kill_on_drop: false }`
[INFO] [stdout] fc9177d647f6b460b810afd8642f079f721b937a9f3d37227fa9bfdecc5cd42c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d782608dc4e654cf2c2ddbc882d8bdc9a6371c5b33f9c87ce0e65a90409f3372
[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" "d782608dc4e654cf2c2ddbc882d8bdc9a6371c5b33f9c87ce0e65a90409f3372", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.58
[INFO] [stderr]    Compiling rand v0.8.2
[INFO] [stderr]    Compiling rayon v1.5.0
[INFO] [stderr]    Compiling tracing-attributes v0.1.11
[INFO] [stderr]    Compiling tracing v0.1.22
[INFO] [stderr]    Compiling fast-tracer v0.1.0 (https://github.com/wagnerf42/fast-tracer#00d453ef)
[INFO] [stderr]    Compiling maximum-number-of-balloons-parallel v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct is never constructed: `Solution`
[INFO] [stdout]  --> src/solution_seq.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Solution;
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `solve`
[INFO] [stdout]  --> src/solution_seq.rs:7:10
[INFO] [stdout]   |
[INFO] [stdout] 7 |   pub fn solve(
[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 20.81s
[INFO] running `Command { std: "docker" "inspect" "d782608dc4e654cf2c2ddbc882d8bdc9a6371c5b33f9c87ce0e65a90409f3372", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d782608dc4e654cf2c2ddbc882d8bdc9a6371c5b33f9c87ce0e65a90409f3372", kill_on_drop: false }`
[INFO] [stdout] d782608dc4e654cf2c2ddbc882d8bdc9a6371c5b33f9c87ce0e65a90409f3372
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a646d4d91497b9da64bac2203eac86f656eb30895af9f4114cdd156ed6ce1d35
[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" "a646d4d91497b9da64bac2203eac86f656eb30895af9f4114cdd156ed6ce1d35", kill_on_drop: false }`
[INFO] [stderr]    Compiling maximum-number-of-balloons-parallel v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct is never constructed: `Solution`
[INFO] [stdout]  --> src/solution_seq.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Solution;
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `solve`
[INFO] [stdout]  --> src/solution_seq.rs:7:10
[INFO] [stdout]   |
[INFO] [stdout] 7 |   pub fn solve(
[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 1.03s
[INFO] running `Command { std: "docker" "inspect" "a646d4d91497b9da64bac2203eac86f656eb30895af9f4114cdd156ed6ce1d35", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a646d4d91497b9da64bac2203eac86f656eb30895af9f4114cdd156ed6ce1d35", kill_on_drop: false }`
[INFO] [stdout] a646d4d91497b9da64bac2203eac86f656eb30895af9f4114cdd156ed6ce1d35
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 2190791b4301fca1b289659e214a2b7823abf70998dbe0caced969891fe073eb
[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" "2190791b4301fca1b289659e214a2b7823abf70998dbe0caced969891fe073eb", kill_on_drop: false }`
[INFO] [stderr] warning: struct is never constructed: `Solution`
[INFO] [stderr]  --> src/solution_seq.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub struct Solution;
[INFO] [stderr]   |            ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `solve`
[INFO] [stderr]  --> src/solution_seq.rs:7:10
[INFO] [stderr]   |
[INFO] [stderr] 7 |   pub fn solve(
[INFO] [stderr]   |          ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `maximum-number-of-balloons-parallel` (bin "maximum-number-of-balloons-parallel" test) generated 2 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/maximum_number_of_balloons_parallel-05cab3616b8c0727)
[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" "2190791b4301fca1b289659e214a2b7823abf70998dbe0caced969891fe073eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2190791b4301fca1b289659e214a2b7823abf70998dbe0caced969891fe073eb", kill_on_drop: false }`
[INFO] [stdout] 2190791b4301fca1b289659e214a2b7823abf70998dbe0caced969891fe073eb