[INFO] cloning repository https://github.com/proshunsuke/fizzbuzz-rust-ver
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/proshunsuke/fizzbuzz-rust-ver" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fproshunsuke%2Ffizzbuzz-rust-ver", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fproshunsuke%2Ffizzbuzz-rust-ver'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 552ff4fc901fddbd1dcbc439f4f114a6af9942c3
[INFO] testing proshunsuke/fizzbuzz-rust-ver against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fproshunsuke%2Ffizzbuzz-rust-ver" "/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/proshunsuke/fizzbuzz-rust-ver 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/proshunsuke/fizzbuzz-rust-ver
[INFO] finished tweaking git repo https://github.com/proshunsuke/fizzbuzz-rust-ver
[INFO] tweaked toml for git repo https://github.com/proshunsuke/fizzbuzz-rust-ver written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/proshunsuke/fizzbuzz-rust-ver 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-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" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] edbc5b547929f50287eb02a7ff0ac702d52c5f5f84849cad0e5c9531314790b1
[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" "edbc5b547929f50287eb02a7ff0ac702d52c5f5f84849cad0e5c9531314790b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "edbc5b547929f50287eb02a7ff0ac702d52c5f5f84849cad0e5c9531314790b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "edbc5b547929f50287eb02a7ff0ac702d52c5f5f84849cad0e5c9531314790b1", kill_on_drop: false }`
[INFO] [stdout] edbc5b547929f50287eb02a7ff0ac702d52c5f5f84849cad0e5c9531314790b1
[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" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] be698b3323d33074e56571a09b1129b8828408a39f53e189599c01fe8c7f6859
[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" "be698b3323d33074e56571a09b1129b8828408a39f53e189599c01fe8c7f6859", kill_on_drop: false }`
[INFO] [stderr]    Compiling RustFizzBuzz v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: crate `RustFizzBuzz` 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: `rust_fizz_buzz`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `RustFizzBuzz` 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: `rust_fizz_buzz`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.63s
[INFO] running `Command { std: "docker" "inspect" "be698b3323d33074e56571a09b1129b8828408a39f53e189599c01fe8c7f6859", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be698b3323d33074e56571a09b1129b8828408a39f53e189599c01fe8c7f6859", kill_on_drop: false }`
[INFO] [stdout] be698b3323d33074e56571a09b1129b8828408a39f53e189599c01fe8c7f6859
[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" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 28d44aaf929f91455ba7c9d5434e6e0e9de6c4cac3589f3da3812ec00ea45804
[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" "28d44aaf929f91455ba7c9d5434e6e0e9de6c4cac3589f3da3812ec00ea45804", kill_on_drop: false }`
[INFO] [stdout] warning: crate `RustFizzBuzz` 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: `rust_fizz_buzz`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling RustFizzBuzz v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `RustFizzBuzz` 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: `rust_fizz_buzz`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `RustFizzBuzz` 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: `rust_fizz_buzz`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `RustFizzBuzz` 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: `rust_fizz_buzz`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.09s
[INFO] running `Command { std: "docker" "inspect" "28d44aaf929f91455ba7c9d5434e6e0e9de6c4cac3589f3da3812ec00ea45804", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "28d44aaf929f91455ba7c9d5434e6e0e9de6c4cac3589f3da3812ec00ea45804", kill_on_drop: false }`
[INFO] [stdout] 28d44aaf929f91455ba7c9d5434e6e0e9de6c4cac3589f3da3812ec00ea45804
[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" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] dcaa32c710d3b74b2b7be8478efb9f9b01406a6c1d356af4ac32b21556c11067
[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" "dcaa32c710d3b74b2b7be8478efb9f9b01406a6c1d356af4ac32b21556c11067", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: crate `RustFizzBuzz` should have a snake case name
[INFO] [stdout] running 0 tests
[INFO] [stderr]   |
[INFO] [stdout] 
[INFO] [stderr]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr]   = help: convert the identifier to snake case: `rust_fizz_buzz`
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stderr] warning: `RustFizzBuzz` (lib) generated 1 warning
[INFO] [stderr] warning: `RustFizzBuzz` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr] warning: `RustFizzBuzz` (bin "RustFizzBuzz" test) generated 1 warning (1 duplicate)
[INFO] [stderr] warning: `RustFizzBuzz` (bin "RustFizzBuzz") generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/RustFizzBuzz-3c2fe548a2b3f9ea)
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/RustFizzBuzz-da8c4b59bc6ba287)
[INFO] [stdout] 
[INFO] [stderr]      Running tests/test_rust_fizzbuzz.rs (/opt/rustwide/target/debug/deps/test_rust_fizzbuzz-0e3cb61f003c51ce)
[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 5 tests
[INFO] [stdout] test _15is_fizzbuzz ... ok
[INFO] [stdout] test _3is_fizz ... ok
[INFO] [stdout] test _5is_buzz ... ok
[INFO] [stderr]    Doc-tests RustFizzBuzz
[INFO] [stdout] test _1is_1 ... ok
[INFO] [stdout] test can_test ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 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" "dcaa32c710d3b74b2b7be8478efb9f9b01406a6c1d356af4ac32b21556c11067", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dcaa32c710d3b74b2b7be8478efb9f9b01406a6c1d356af4ac32b21556c11067", kill_on_drop: false }`
[INFO] [stdout] dcaa32c710d3b74b2b7be8478efb9f9b01406a6c1d356af4ac32b21556c11067