[INFO] cloning repository https://github.com/DanieleDeIuliis/FizzBuzzRust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/DanieleDeIuliis/FizzBuzzRust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDanieleDeIuliis%2FFizzBuzzRust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDanieleDeIuliis%2FFizzBuzzRust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a1ed0d84088e177e0e329a5d6f45230e67991b43
[INFO] testing DanieleDeIuliis/FizzBuzzRust against beta-2022-02-22 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDanieleDeIuliis%2FFizzBuzzRust" "/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/DanieleDeIuliis/FizzBuzzRust on toolchain beta-2022-02-22
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/DanieleDeIuliis/FizzBuzzRust
[INFO] finished tweaking git repo https://github.com/DanieleDeIuliis/FizzBuzzRust
[INFO] tweaked toml for git repo https://github.com/DanieleDeIuliis/FizzBuzzRust written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/DanieleDeIuliis/FizzBuzzRust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ab9ab6eaae7a9b5626ec072d40976fecc1ffb3aa7c397cb106546e52b89901b9
[INFO] running `Command { std: "docker" "start" "-a" "ab9ab6eaae7a9b5626ec072d40976fecc1ffb3aa7c397cb106546e52b89901b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ab9ab6eaae7a9b5626ec072d40976fecc1ffb3aa7c397cb106546e52b89901b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ab9ab6eaae7a9b5626ec072d40976fecc1ffb3aa7c397cb106546e52b89901b9", kill_on_drop: false }`
[INFO] [stdout] ab9ab6eaae7a9b5626ec072d40976fecc1ffb3aa7c397cb106546e52b89901b9
[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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6111de22256ca690139f18749fe5eea2f2d18f8edebfa24aa4a21095f56b42ce
[INFO] running `Command { std: "docker" "start" "-a" "6111de22256ca690139f18749fe5eea2f2d18f8edebfa24aa4a21095f56b42ce", kill_on_drop: false }`
[INFO] [stderr]    Compiling FizzBuzzRust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::borrow::Borrow`
[INFO] [stdout]  --> src/not_multiple_of_checker.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::borrow::Borrow;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `FizzBuzzRust` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `fizz_buzz_rust`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.10s
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "6111de22256ca690139f18749fe5eea2f2d18f8edebfa24aa4a21095f56b42ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6111de22256ca690139f18749fe5eea2f2d18f8edebfa24aa4a21095f56b42ce", kill_on_drop: false }`
[INFO] [stdout] 6111de22256ca690139f18749fe5eea2f2d18f8edebfa24aa4a21095f56b42ce
[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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 267f0224830d2f568d0d344e55571488069568db59c87465d537a64a3ac0a3a9
[INFO] running `Command { std: "docker" "start" "-a" "267f0224830d2f568d0d344e55571488069568db59c87465d537a64a3ac0a3a9", kill_on_drop: false }`
[INFO] [stdout] warning: unused import: `std::borrow::Borrow`
[INFO] [stdout]  --> src/not_multiple_of_checker.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::borrow::Borrow;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling FizzBuzzRust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: crate `FizzBuzzRust` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `fizz_buzz_rust`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::borrow::Borrow`
[INFO] [stdout]  --> src/not_multiple_of_checker.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::borrow::Borrow;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `FizzBuzzRust` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `fizz_buzz_rust`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.60s
[INFO] running `Command { std: "docker" "inspect" "267f0224830d2f568d0d344e55571488069568db59c87465d537a64a3ac0a3a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "267f0224830d2f568d0d344e55571488069568db59c87465d537a64a3ac0a3a9", kill_on_drop: false }`
[INFO] [stdout] 267f0224830d2f568d0d344e55571488069568db59c87465d537a64a3ac0a3a9
[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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 1530932a0aeaa88ec70d96ffbeeeb6253b8c9e54517ce980d1ca884ee3b1bb46
[INFO] running `Command { std: "docker" "start" "-a" "1530932a0aeaa88ec70d96ffbeeeb6253b8c9e54517ce980d1ca884ee3b1bb46", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `std::borrow::Borrow`
[INFO] [stderr]  --> src/not_multiple_of_checker.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::borrow::Borrow;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: crate `FizzBuzzRust` should have a snake case name
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr]   = help: convert the identifier to snake case: `fizz_buzz_rust`
[INFO] [stderr] 
[INFO] [stderr] warning: `FizzBuzzRust` (lib) generated 2 warnings
[INFO] [stderr] warning: `FizzBuzzRust` (lib test) generated 2 warnings (2 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/FizzBuzzRust-196d9231d0428e72)
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test multiple_of_checker::test::return_empty_string_when_the_number_is_a_multiple_of_three ... ok
[INFO] [stdout] test multiple_of_checker::test::return_fizz_when_the_number_is_a_multiple_of_three ... ok
[INFO] [stdout] test not_multiple_of_checker::test::return_empty_when_the_number_is_a_multiple_of_a_base ... ok
[INFO] [stdout] test not_multiple_of_checker::test::return_the_number_when_it_is_not_a_multiple_of_any_base ... ok
[INFO] [stdout] test test::returns_buzz_with_a_multiple_of_five ... ok
[INFO] [stdout] test test::returns_fizz_with_a_multiple_of_three ... ok
[INFO] [stdout] test test::returns_fizzbuzz_with_a_multiple_of_both_five_and_three ... ok
[INFO] [stdout] test test::returns_the_initial_number_when_it_is_not_a_multiple_of_five_or_three ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/fizz_buzz.rs (/opt/rustwide/target/debug/deps/fizz_buzz-9b38e6481bc69553)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests FizzBuzzRust
[INFO] [stdout] running 4 tests
[INFO] [stdout] test returns_fizzbuzz_with_a_multiple_of_both_five_and_three ... ok
[INFO] [stdout] test returns_buzz_with_a_multiple_of_five ... ok
[INFO] [stdout] test returns_fizz_with_a_multiple_of_three ... ok
[INFO] [stdout] test returns_the_initial_number_when_it_is_not_a_multiple_of_five_or_three ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[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" "1530932a0aeaa88ec70d96ffbeeeb6253b8c9e54517ce980d1ca884ee3b1bb46", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1530932a0aeaa88ec70d96ffbeeeb6253b8c9e54517ce980d1ca884ee3b1bb46", kill_on_drop: false }`
[INFO] [stdout] 1530932a0aeaa88ec70d96ffbeeeb6253b8c9e54517ce980d1ca884ee3b1bb46