[INFO] cloning repository https://github.com/anthropomorphic/project_euler_24
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/anthropomorphic/project_euler_24" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fanthropomorphic%2Fproject_euler_24", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fanthropomorphic%2Fproject_euler_24'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 34720214fb8f34e278d5d806a4cbe64985866eaf
[INFO] testing anthropomorphic/project_euler_24 against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fanthropomorphic%2Fproject_euler_24" "/workspace/builds/worker-10/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/anthropomorphic/project_euler_24 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/anthropomorphic/project_euler_24
[INFO] finished tweaking git repo https://github.com/anthropomorphic/project_euler_24
[INFO] tweaked toml for git repo https://github.com/anthropomorphic/project_euler_24 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/anthropomorphic/project_euler_24 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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] [stdout] f4141c49d9b9974b88f224e0bfd2b099570912eaf0647c55886a71a6a010af8d
[INFO] running `Command { std: "docker" "start" "-a" "f4141c49d9b9974b88f224e0bfd2b099570912eaf0647c55886a71a6a010af8d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f4141c49d9b9974b88f224e0bfd2b099570912eaf0647c55886a71a6a010af8d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f4141c49d9b9974b88f224e0bfd2b099570912eaf0647c55886a71a6a010af8d", kill_on_drop: false }`
[INFO] [stdout] f4141c49d9b9974b88f224e0bfd2b099570912eaf0647c55886a71a6a010af8d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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] e3073e623912240139280bf6a93cab0cc09281eda4543872265bd3557173eab8
[INFO] running `Command { std: "docker" "start" "-a" "e3073e623912240139280bf6a93cab0cc09281eda4543872265bd3557173eab8", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling project_euler_24 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/main.rs:108:13
[INFO] [stdout]     |
[INFO] [stdout] 108 |             &self.remove(p);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.88s
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "e3073e623912240139280bf6a93cab0cc09281eda4543872265bd3557173eab8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e3073e623912240139280bf6a93cab0cc09281eda4543872265bd3557173eab8", kill_on_drop: false }`
[INFO] [stdout] e3073e623912240139280bf6a93cab0cc09281eda4543872265bd3557173eab8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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] e40ff590dc19484012e37bdee4d5892fc54567be6605116764a804a02b72f6a9
[INFO] running `Command { std: "docker" "start" "-a" "e40ff590dc19484012e37bdee4d5892fc54567be6605116764a804a02b72f6a9", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling project_euler_24 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/main.rs:108:13
[INFO] [stdout]     |
[INFO] [stdout] 108 |             &self.remove(p);
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` 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 0.52s
[INFO] running `Command { std: "docker" "inspect" "e40ff590dc19484012e37bdee4d5892fc54567be6605116764a804a02b72f6a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e40ff590dc19484012e37bdee4d5892fc54567be6605116764a804a02b72f6a9", kill_on_drop: false }`
[INFO] [stdout] e40ff590dc19484012e37bdee4d5892fc54567be6605116764a804a02b72f6a9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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] dd2e1b7c25ac871a25e30e806db6176e54c3d08793b6dc977f58df5809da607c
[INFO] running `Command { std: "docker" "start" "-a" "dd2e1b7c25ac871a25e30e806db6176e54c3d08793b6dc977f58df5809da607c", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stdout] 
[INFO] [stderr] warning: unused borrow that must be used
[INFO] [stdout] running 0 tests
[INFO] [stderr]    --> src/main.rs:108:13
[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] 108 |             &self.remove(p);
[INFO] [stdout] 
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `project_euler_24` (bin "project_euler_24" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.87s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/project_euler_24-32db453d7d826f59)
[INFO] running `Command { std: "docker" "inspect" "dd2e1b7c25ac871a25e30e806db6176e54c3d08793b6dc977f58df5809da607c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dd2e1b7c25ac871a25e30e806db6176e54c3d08793b6dc977f58df5809da607c", kill_on_drop: false }`
[INFO] [stdout] dd2e1b7c25ac871a25e30e806db6176e54c3d08793b6dc977f58df5809da607c