[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 beta-2021-09-08 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-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Ethan-Arrowood/project-euler-rust 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/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-4/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" "+beta-2021-09-08" "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-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] 34ee630e10eebc1a2dd1cccdbb11ded7b309bad2efa3c7998dce2158077a050c
[INFO] running `Command { std: "docker" "start" "-a" "34ee630e10eebc1a2dd1cccdbb11ded7b309bad2efa3c7998dce2158077a050c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "34ee630e10eebc1a2dd1cccdbb11ded7b309bad2efa3c7998dce2158077a050c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "34ee630e10eebc1a2dd1cccdbb11ded7b309bad2efa3c7998dce2158077a050c", kill_on_drop: false }`
[INFO] [stdout] 34ee630e10eebc1a2dd1cccdbb11ded7b309bad2efa3c7998dce2158077a050c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] 468f05ceb213fb91538280cd38e8b58e933cf6e4f1d549f0698cf8dc7a6fdcdb
[INFO] running `Command { std: "docker" "start" "-a" "468f05ceb213fb91538280cd38e8b58e933cf6e4f1d549f0698cf8dc7a6fdcdb", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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] [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 dev [unoptimized + debuginfo] target(s) in 0.65s
[INFO] running `Command { std: "docker" "inspect" "468f05ceb213fb91538280cd38e8b58e933cf6e4f1d549f0698cf8dc7a6fdcdb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "468f05ceb213fb91538280cd38e8b58e933cf6e4f1d549f0698cf8dc7a6fdcdb", kill_on_drop: false }`
[INFO] [stdout] 468f05ceb213fb91538280cd38e8b58e933cf6e4f1d549f0698cf8dc7a6fdcdb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] 415c1134c813d275500499f86655d90021fa151dfefd34fa8312e41de2572b53
[INFO] running `Command { std: "docker" "start" "-a" "415c1134c813d275500499f86655d90021fa151dfefd34fa8312e41de2572b53", kill_on_drop: false }`
[INFO] [stderr]    Compiling largest_palindrome_product v0.1.0 (/opt/rustwide/workdir/largest_palindrome_product)
[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] [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 0.43s
[INFO] running `Command { std: "docker" "inspect" "415c1134c813d275500499f86655d90021fa151dfefd34fa8312e41de2572b53", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "415c1134c813d275500499f86655d90021fa151dfefd34fa8312e41de2572b53", kill_on_drop: false }`
[INFO] [stdout] 415c1134c813d275500499f86655d90021fa151dfefd34fa8312e41de2572b53
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] 2a404596fce1ea4a591b031e11e4dc7156c3781081822ce0853f5fa92474b2d0
[INFO] running `Command { std: "docker" "start" "-a" "2a404596fce1ea4a591b031e11e4dc7156c3781081822ce0853f5fa92474b2d0", 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 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/even_fib_nums-651037c8fc522730)
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/largest_palindrome_product-2458b53398fad51b)
[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-4064aee2398c3014)
[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_5-8e752e6bf44a62a9)
[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] [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" "2a404596fce1ea4a591b031e11e4dc7156c3781081822ce0853f5fa92474b2d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2a404596fce1ea4a591b031e11e4dc7156c3781081822ce0853f5fa92474b2d0", kill_on_drop: false }`
[INFO] [stdout] 2a404596fce1ea4a591b031e11e4dc7156c3781081822ce0853f5fa92474b2d0