[INFO] cloning repository https://github.com/kamilduda/rust_fizz_buzz
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kamilduda/rust_fizz_buzz" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkamilduda%2Frust_fizz_buzz", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkamilduda%2Frust_fizz_buzz'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 63555e57a4533d4d23b302c9fb23d204bb2723fc
[INFO] testing kamilduda/rust_fizz_buzz against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkamilduda%2Frust_fizz_buzz" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kamilduda/rust_fizz_buzz 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/kamilduda/rust_fizz_buzz
[INFO] finished tweaking git repo https://github.com/kamilduda/rust_fizz_buzz
[INFO] tweaked toml for git repo https://github.com/kamilduda/rust_fizz_buzz written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/kamilduda/rust_fizz_buzz 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] 1539ed56b203b3aad0622a51211ecf09ab872c8364a707d89da5d7d2d1784579
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "1539ed56b203b3aad0622a51211ecf09ab872c8364a707d89da5d7d2d1784579", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1539ed56b203b3aad0622a51211ecf09ab872c8364a707d89da5d7d2d1784579", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1539ed56b203b3aad0622a51211ecf09ab872c8364a707d89da5d7d2d1784579", kill_on_drop: false }`
[INFO] [stdout] 1539ed56b203b3aad0622a51211ecf09ab872c8364a707d89da5d7d2d1784579
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] 2c073959c87358b23cbc190ed2508575eb0deb1f484f0db1835abab5eee70fd7
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "2c073959c87358b23cbc190ed2508575eb0deb1f484f0db1835abab5eee70fd7", kill_on_drop: false }`
[INFO] [stderr]    Compiling fizz_buzz v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::net::UdpSocket`
[INFO] [stdout]  --> src/lib.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::net::UdpSocket;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.05s
[INFO] running `Command { std: "docker" "inspect" "2c073959c87358b23cbc190ed2508575eb0deb1f484f0db1835abab5eee70fd7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2c073959c87358b23cbc190ed2508575eb0deb1f484f0db1835abab5eee70fd7", kill_on_drop: false }`
[INFO] [stdout] 2c073959c87358b23cbc190ed2508575eb0deb1f484f0db1835abab5eee70fd7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] fc4ab5dd539402fab367dc697ddeed693e3b571740a1cb4150a680553b891764
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "fc4ab5dd539402fab367dc697ddeed693e3b571740a1cb4150a680553b891764", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]    Compiling memchr v2.3.0
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling syn v1.0.14
[INFO] [stderr]    Compiling regex-syntax v0.6.14
[INFO] [stderr]    Compiling oorandom v11.1.0
[INFO] [stderr]    Compiling cast v0.2.3
[INFO] [stdout] warning: unused import: `std::net::UdpSocket`
[INFO] [stdout]  --> src/lib.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::net::UdpSocket;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling plotters v0.2.12
[INFO] [stderr]    Compiling rayon-core v1.7.0
[INFO] [stderr]    Compiling rayon v1.3.0
[INFO] [stderr]    Compiling csv-core v0.1.6
[INFO] [stderr]    Compiling criterion-plot v0.4.1
[INFO] [stderr]    Compiling regex-automata v0.1.8
[INFO] [stderr]    Compiling regex v1.3.4
[INFO] [stderr]    Compiling serde_json v1.0.46
[INFO] [stderr]    Compiling bstr v0.2.11
[INFO] [stderr]    Compiling csv v1.1.3
[INFO] [stderr]    Compiling tinytemplate v1.0.3
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]    Compiling criterion v0.3.1
[INFO] [stderr]    Compiling fizz_buzz v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::net::UdpSocket`
[INFO] [stdout]  --> src/lib.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::net::UdpSocket;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` 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 1m 19s
[INFO] running `Command { std: "docker" "inspect" "fc4ab5dd539402fab367dc697ddeed693e3b571740a1cb4150a680553b891764", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fc4ab5dd539402fab367dc697ddeed693e3b571740a1cb4150a680553b891764", kill_on_drop: false }`
[INFO] [stdout] fc4ab5dd539402fab367dc697ddeed693e3b571740a1cb4150a680553b891764
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] 83eae0df2375305bdfeeaa12c700225c460e237ca76f4164e54040d354d620e1
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "83eae0df2375305bdfeeaa12c700225c460e237ca76f4164e54040d354d620e1", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `std::net::UdpSocket`
[INFO] [stderr]  --> src/lib.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::net::UdpSocket;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `fizz_buzz` (lib) generated 1 warning
[INFO] [stderr] warning: `fizz_buzz` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/fizz_buzz-6a4902249b4b7461)
[INFO] [stdout] 
[INFO] [stdout] running 13 tests
[INFO] [stdout] test math::tests::when_not_divisible_then_false_alternative ... ok
[INFO] [stdout] test tests::when_15_then_fizz_buzz ... ok
[INFO] [stdout] test tests::when_1_then_1 ... ok
[INFO] [stdout] test tests::when_10_then_5 ... ok
[INFO] [stdout] test tests::when_2_then_2 ... ok
[INFO] [stdout] test tests::when_3_then_fizz ... ok
[INFO] [stdout] test tests::when_4_then_4 ... ok
[INFO] [stdout] test tests::when_5_then_5 ... ok
[INFO] [stdout] test math::tests::when_divisible_then_true_alternative ... ok
[INFO] [stdout] test math::tests::when_divisible_then_true ... ok
[INFO] [stdout] test math::tests::when_not_divisible_then_false ... ok
[INFO] [stdout] test math::tests::when_division_by_zero_then_panic - should panic ... ok
[INFO] [stdout] test math::tests::when_division_by_zero_then_panic_alternative - should panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 13 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/fizz_buzz-8fd55cb34ae2105f)
[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 tests/fizz_buzz_use_case.rs (/opt/rustwide/target/debug/deps/fizz_buzz_use_case-e0b98672d33ceca5)
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test when_2_then_2 ... ok
[INFO] [stdout] test when_3_then_fizz ... ok
[INFO] [stdout] test when_5_then_5 ... ok
[INFO] [stdout] test when_4_then_4 ... ok
[INFO] [stdout] test when_1_then_1 ... ok
[INFO] [stdout] test when_10_then_5 ... ok
[INFO] [stdout] test when_15_then_fizz_buzz ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests fizz_buzz
[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" "83eae0df2375305bdfeeaa12c700225c460e237ca76f4164e54040d354d620e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "83eae0df2375305bdfeeaa12c700225c460e237ca76f4164e54040d354d620e1", kill_on_drop: false }`
[INFO] [stdout] 83eae0df2375305bdfeeaa12c700225c460e237ca76f4164e54040d354d620e1