[INFO] updating cached repository https://github.com/JoshMcguigan/fizzbuzz-rs
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] a112853d70f515e16e9b21a148d1941b16e46bdb
[INFO] testing JoshMcguigan/fizzbuzz-rs against beta-2020-06-03 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJoshMcguigan%2Ffizzbuzz-rs" "/workspace/builds/worker-7/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/JoshMcguigan/fizzbuzz-rs on toolchain beta-2020-06-03
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/JoshMcguigan/fizzbuzz-rs
[INFO] finished tweaking git repo https://github.com/JoshMcguigan/fizzbuzz-rs
[INFO] tweaked toml for git repo https://github.com/JoshMcguigan/fizzbuzz-rs written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/JoshMcguigan/fizzbuzz-rs already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 6e226401f6671ee52f59ed07eb7f1bcb2e734d337f6dbd78a515fa77001ab15c
[INFO] running `"docker" "start" "-a" "6e226401f6671ee52f59ed07eb7f1bcb2e734d337f6dbd78a515fa77001ab15c"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling fizzbuzz-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: struct is never constructed: `FizzBuzzer`
[INFO] [stderr]  --> src/func.rs:1:8
[INFO] [stderr]   |
[INFO] [stderr] 1 | struct FizzBuzzer<FnFizz, FnBuzz, FnFizzBuzz, FnOther> {
[INFO] [stderr]   |        ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/func.rs:15:8
[INFO] [stderr]    |
[INFO] [stderr] 15 |     fn new(fn_fizz: FnFizz, fn_buzz: FnBuzz, fn_fizzbuzz: FnFizzBuzz, fn_other: FnOther) -> Self {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `eval`
[INFO] [stderr]   --> src/func.rs:19:8
[INFO] [stderr]    |
[INFO] [stderr] 19 |     fn eval(&self, num: u32) {
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `fizzbuzz`
[INFO] [stderr]  --> src/flexible.rs:2:4
[INFO] [stderr]   |
[INFO] [stderr] 2 | fn fizzbuzz<'a, T>(nums: T)
[INFO] [stderr]   |    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `fizzbuzz_vec`
[INFO] [stderr]   --> src/flexible.rs:18:4
[INFO] [stderr]    |
[INFO] [stderr] 18 | fn fizzbuzz_vec(nums: &Vec<u32>) {
[INFO] [stderr]    |    ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]  --> src/iterator.rs:7:8
[INFO] [stderr]   |
[INFO] [stderr] 7 |     fn new(starting_value: u32, length: u32) -> Self {
[INFO] [stderr]   |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 6 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.60s
[INFO] running `"docker" "inspect" "6e226401f6671ee52f59ed07eb7f1bcb2e734d337f6dbd78a515fa77001ab15c"`
[INFO] running `"docker" "rm" "-f" "6e226401f6671ee52f59ed07eb7f1bcb2e734d337f6dbd78a515fa77001ab15c"`
[INFO] [stdout] 6e226401f6671ee52f59ed07eb7f1bcb2e734d337f6dbd78a515fa77001ab15c
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "test" "--frozen" "--no-run"`
[INFO] [stdout] 422c0164fa2b7bcdf1c4872cbe1f337d91f78083c2cd759d3d642b15f54265b0
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "422c0164fa2b7bcdf1c4872cbe1f337d91f78083c2cd759d3d642b15f54265b0"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling fizzbuzz-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.95s
[INFO] running `"docker" "inspect" "422c0164fa2b7bcdf1c4872cbe1f337d91f78083c2cd759d3d642b15f54265b0"`
[INFO] running `"docker" "rm" "-f" "422c0164fa2b7bcdf1c4872cbe1f337d91f78083c2cd759d3d642b15f54265b0"`
[INFO] [stdout] 422c0164fa2b7bcdf1c4872cbe1f337d91f78083c2cd759d3d642b15f54265b0
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "test" "--frozen"`
[INFO] [stdout] acad8626391f84bd002fcf07c63526bcca90fe797db336e77d17bda53066abf9
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "acad8626391f84bd002fcf07c63526bcca90fe797db336e77d17bda53066abf9"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/fizzbuzz_rs-79cbdc4aefb65e06
[INFO] [stdout] 
[INFO] [stdout] running 9 tests
[INFO] [stdout] test display::test::it_works ... ok
[INFO] [stdout] test enumeration::tests::display ... ok
[INFO] [stdout] test enumeration::tests::into ... ok
[INFO] [stdout] test enumeration::tests::from ... ok
[INFO] [stdout] test flexible::tests::it_works ... ok
[INFO] [stdout] test func::tests::it_works ... ok
[INFO] [stdout] test intro::tests::using_match ... ok
[INFO] [stdout] test intro::tests::using_if_else ... ok
[INFO] [stdout] test iterator::tests::it_works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 9 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "acad8626391f84bd002fcf07c63526bcca90fe797db336e77d17bda53066abf9"`
[INFO] running `"docker" "rm" "-f" "acad8626391f84bd002fcf07c63526bcca90fe797db336e77d17bda53066abf9"`
[INFO] [stdout] acad8626391f84bd002fcf07c63526bcca90fe797db336e77d17bda53066abf9