[INFO] cloning repository https://github.com/Ethan-Arrowood/project-euler-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Ethan-Arrowood/project-euler-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEthan-Arrowood%2Fproject-euler-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEthan-Arrowood%2Fproject-euler-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fae2e706f76be1c41486c2e9f69d653fbfc61c5e
[INFO] testing Ethan-Arrowood/project-euler-rust against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEthan-Arrowood%2Fproject-euler-rust" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Ethan-Arrowood/project-euler-rust 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/Ethan-Arrowood/project-euler-rust
[INFO] finished tweaking git repo https://github.com/Ethan-Arrowood/project-euler-rust
[INFO] tweaked toml for git repo https://github.com/Ethan-Arrowood/project-euler-rust written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/Ethan-Arrowood/project-euler-rust 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-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] a55ec7f213211e8efc29c6da13d7e98b5721f81b95a898e59217cf288d596064
[INFO] running `Command { std: "docker" "start" "-a" "a55ec7f213211e8efc29c6da13d7e98b5721f81b95a898e59217cf288d596064", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a55ec7f213211e8efc29c6da13d7e98b5721f81b95a898e59217cf288d596064", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a55ec7f213211e8efc29c6da13d7e98b5721f81b95a898e59217cf288d596064", kill_on_drop: false }`
[INFO] [stdout] a55ec7f213211e8efc29c6da13d7e98b5721f81b95a898e59217cf288d596064
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] ddc9ddc3ab2646e217dadc9636ab3fbed8f29358cb1f3680e31c35240897ab0c
[INFO] running `Command { std: "docker" "start" "-a" "ddc9ddc3ab2646e217dadc9636ab3fbed8f29358cb1f3680e31c35240897ab0c", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling even_fib_nums v0.1.0 (/opt/rustwide/workdir/even_fib_nums)
[INFO] [stderr]    Compiling largest_prime_factor v0.1.0 (/opt/rustwide/workdir/largest_prime_factor)
[INFO] [stderr]    Compiling mult_3_and_5 v0.1.0 (/opt/rustwide/workdir/mult_3_and_5)
[INFO] [stderr]    Compiling largest_palindrome_product v0.1.0 (/opt/rustwide/workdir/largest_palindrome_product)
[INFO] [stdout] warning: value assigned to `a` is never read
[INFO] [stdout]  --> even_fib_nums/src/main.rs:2:13
[INFO] [stdout]   |
[INFO] [stdout] 2 |     let mut a = 1;
[INFO] [stdout]   |             ^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]   = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.67s
[INFO] running `Command { std: "docker" "inspect" "ddc9ddc3ab2646e217dadc9636ab3fbed8f29358cb1f3680e31c35240897ab0c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ddc9ddc3ab2646e217dadc9636ab3fbed8f29358cb1f3680e31c35240897ab0c", kill_on_drop: false }`
[INFO] [stdout] ddc9ddc3ab2646e217dadc9636ab3fbed8f29358cb1f3680e31c35240897ab0c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] 4fe30afb603078135073369a52ba5fe5509cd5a4b5099ed26030beb8dee35507
[INFO] running `Command { std: "docker" "start" "-a" "4fe30afb603078135073369a52ba5fe5509cd5a4b5099ed26030beb8dee35507", kill_on_drop: false }`
[INFO] [stderr]    Compiling largest_palindrome_product v0.1.0 (/opt/rustwide/workdir/largest_palindrome_product)
[INFO] [stderr]    Compiling mult_3_and_5 v0.1.0 (/opt/rustwide/workdir/mult_3_and_5)
[INFO] [stderr]    Compiling largest_prime_factor v0.1.0 (/opt/rustwide/workdir/largest_prime_factor)
[INFO] [stderr]    Compiling even_fib_nums v0.1.0 (/opt/rustwide/workdir/even_fib_nums)
[INFO] [stdout] warning: value assigned to `a` is never read
[INFO] [stdout]  --> even_fib_nums/src/main.rs:2:13
[INFO] [stdout]   |
[INFO] [stdout] 2 |     let mut a = 1;
[INFO] [stdout]   |             ^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]   = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.41s
[INFO] running `Command { std: "docker" "inspect" "4fe30afb603078135073369a52ba5fe5509cd5a4b5099ed26030beb8dee35507", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4fe30afb603078135073369a52ba5fe5509cd5a4b5099ed26030beb8dee35507", kill_on_drop: false }`
[INFO] [stdout] 4fe30afb603078135073369a52ba5fe5509cd5a4b5099ed26030beb8dee35507
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] 091463d39e1d62c2d8d04385008703aee3fbe32d397199e65cbccb055f364a27
[INFO] running `Command { std: "docker" "start" "-a" "091463d39e1d62c2d8d04385008703aee3fbe32d397199e65cbccb055f364a27", kill_on_drop: false }`
[INFO] [stderr] warning: value assigned to `a` is never read
[INFO] [stderr]  --> even_fib_nums/src/main.rs:2:13
[INFO] [stderr]   |
[INFO] [stderr] 2 |     let mut a = 1;
[INFO] [stderr]   |             ^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]   = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: `even_fib_nums` (bin "even_fib_nums" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/even_fib_nums-e8b28ccdf903579f)
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/largest_palindrome_product-2d82341410778455)
[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] [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] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/largest_prime_factor-eedc2c91bdc9bf44)
[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] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/mult_3_and_5-89e506c263317697)
[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" "091463d39e1d62c2d8d04385008703aee3fbe32d397199e65cbccb055f364a27", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "091463d39e1d62c2d8d04385008703aee3fbe32d397199e65cbccb055f364a27", kill_on_drop: false }`
[INFO] [stdout] 091463d39e1d62c2d8d04385008703aee3fbe32d397199e65cbccb055f364a27