[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 beta-2022-04-10 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fanthropomorphic%2Fproject_euler_24" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/anthropomorphic/project_euler_24 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/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-3/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" "+beta-2022-04-10" "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-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] 92afee39c6986ccceeea0b920a0b097dd73e559807eb5991ed30fe0cbf0111ea
[INFO] running `Command { std: "docker" "start" "-a" "92afee39c6986ccceeea0b920a0b097dd73e559807eb5991ed30fe0cbf0111ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "92afee39c6986ccceeea0b920a0b097dd73e559807eb5991ed30fe0cbf0111ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "92afee39c6986ccceeea0b920a0b097dd73e559807eb5991ed30fe0cbf0111ea", kill_on_drop: false }`
[INFO] [stdout] 92afee39c6986ccceeea0b920a0b097dd73e559807eb5991ed30fe0cbf0111ea
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] 4550d74e885304b44599dbdc4c668f292312a56fad9ddb1ae6dfcb2d15ac840e
[INFO] running `Command { std: "docker" "start" "-a" "4550d74e885304b44599dbdc4c668f292312a56fad9ddb1ae6dfcb2d15ac840e", kill_on_drop: false }`
[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]     |             ^^^^^^^^^^^^^^^ 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] 108 |             let _ = &self.remove(p);
[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 0.69s
[INFO] running `Command { std: "docker" "inspect" "4550d74e885304b44599dbdc4c668f292312a56fad9ddb1ae6dfcb2d15ac840e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4550d74e885304b44599dbdc4c668f292312a56fad9ddb1ae6dfcb2d15ac840e", kill_on_drop: false }`
[INFO] [stdout] 4550d74e885304b44599dbdc4c668f292312a56fad9ddb1ae6dfcb2d15ac840e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] 25179b0e81d44f1eb87ddc74fdc8eb1f60240a103a7c51f8d7d4b20b958cdd4d
[INFO] running `Command { std: "docker" "start" "-a" "25179b0e81d44f1eb87ddc74fdc8eb1f60240a103a7c51f8d7d4b20b958cdd4d", kill_on_drop: false }`
[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]     |             ^^^^^^^^^^^^^^^ 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] 108 |             let _ = &self.remove(p);
[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 0.39s
[INFO] [stderr]   Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/project_euler_24-8db73e74f9940576)
[INFO] running `Command { std: "docker" "inspect" "25179b0e81d44f1eb87ddc74fdc8eb1f60240a103a7c51f8d7d4b20b958cdd4d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "25179b0e81d44f1eb87ddc74fdc8eb1f60240a103a7c51f8d7d4b20b958cdd4d", kill_on_drop: false }`
[INFO] [stdout] 25179b0e81d44f1eb87ddc74fdc8eb1f60240a103a7c51f8d7d4b20b958cdd4d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] 14fcf57b7a8c7bde76e1c593122fd83de1fe11086123bcd47b0b4d7e9fd3ebc8
[INFO] running `Command { std: "docker" "start" "-a" "14fcf57b7a8c7bde76e1c593122fd83de1fe11086123bcd47b0b4d7e9fd3ebc8", 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/main.rs:108:13
[INFO] [stderr]     |
[INFO] [stderr] 108 |             &self.remove(p);
[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] 108 |             let _ = &self.remove(p);
[INFO] [stderr]     |             +++++++
[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 0.61s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/project_euler_24-8db73e74f9940576)
[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" "14fcf57b7a8c7bde76e1c593122fd83de1fe11086123bcd47b0b4d7e9fd3ebc8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "14fcf57b7a8c7bde76e1c593122fd83de1fe11086123bcd47b0b4d7e9fd3ebc8", kill_on_drop: false }`
[INFO] [stdout] 14fcf57b7a8c7bde76e1c593122fd83de1fe11086123bcd47b0b4d7e9fd3ebc8