[INFO] updating cached repository https://github.com/JoshMcguigan/fizzbuzz-rs
[INFO] running `Command { std: "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", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a112853d70f515e16e9b21a148d1941b16e46bdb
[INFO] testing JoshMcguigan/fizzbuzz-rs against try#03a1ea71b075ab964b5278bc6e74cd6c52c36ee0 for pr-74409
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJoshMcguigan%2Ffizzbuzz-rs" "/workspace/builds/worker-10/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/JoshMcguigan/fizzbuzz-rs on toolchain 03a1ea71b075ab964b5278bc6e74cd6c52c36ee0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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-10/source/Cargo.toml
[INFO] crate git repo https://github.com/JoshMcguigan/fizzbuzz-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8b0827ea474dab24107c36148ca6f15cc4c10b5f796af39b0cfb93108509eb60
[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" "8b0827ea474dab24107c36148ca6f15cc4c10b5f796af39b0cfb93108509eb60", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8b0827ea474dab24107c36148ca6f15cc4c10b5f796af39b0cfb93108509eb60", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8b0827ea474dab24107c36148ca6f15cc4c10b5f796af39b0cfb93108509eb60", kill_on_drop: false }`
[INFO] [stdout] 8b0827ea474dab24107c36148ca6f15cc4c10b5f796af39b0cfb93108509eb60
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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=forbid" "-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@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 603009ef5981231430ccf2b3ed54658ba358556219128d5f2aa2cb17dc8090b2
[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" "603009ef5981231430ccf2b3ed54658ba358556219128d5f2aa2cb17dc8090b2", kill_on_drop: false }`
[INFO] [stderr]    Compiling fizzbuzz-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct is never constructed: `FizzBuzzer`
[INFO] [stdout]  --> src/func.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct FizzBuzzer<FnFizz, FnBuzz, FnFizzBuzz, FnOther> {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/func.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 |     fn new(fn_fizz: FnFizz, fn_buzz: FnBuzz, fn_fizzbuzz: FnFizzBuzz, fn_other: FnOther) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `eval`
[INFO] [stdout]   --> src/func.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 19 |     fn eval(&self, num: u32) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fizzbuzz`
[INFO] [stdout]  --> src/flexible.rs:2:4
[INFO] [stdout]   |
[INFO] [stdout] 2 | fn fizzbuzz<'a, T>(nums: T)
[INFO] [stdout]   |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fizzbuzz_vec`
[INFO] [stdout]   --> src/flexible.rs:18:4
[INFO] [stdout]    |
[INFO] [stdout] 18 | fn fizzbuzz_vec(nums: &Vec<u32>) {
[INFO] [stdout]    |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]  --> src/iterator.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 |     fn new(starting_value: u32, length: u32) -> Self {
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.73s
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "603009ef5981231430ccf2b3ed54658ba358556219128d5f2aa2cb17dc8090b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "603009ef5981231430ccf2b3ed54658ba358556219128d5f2aa2cb17dc8090b2", kill_on_drop: false }`
[INFO] [stdout] 603009ef5981231430ccf2b3ed54658ba358556219128d5f2aa2cb17dc8090b2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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=forbid" "-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@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 1bf332062757aefa3da62049db10ce5f265d6b7eded322c9cbfe7622c9c4fc04
[INFO] running `Command { std: "docker" "start" "-a" "1bf332062757aefa3da62049db10ce5f265d6b7eded322c9cbfe7622c9c4fc04", kill_on_drop: false }`
[INFO] [stderr]    Compiling fizzbuzz-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.96s
[INFO] running `Command { std: "docker" "inspect" "1bf332062757aefa3da62049db10ce5f265d6b7eded322c9cbfe7622c9c4fc04", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1bf332062757aefa3da62049db10ce5f265d6b7eded322c9cbfe7622c9c4fc04", kill_on_drop: false }`
[INFO] [stdout] 1bf332062757aefa3da62049db10ce5f265d6b7eded322c9cbfe7622c9c4fc04
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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=forbid" "-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@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] c7476a14eed6e8b179ecc346488f20d95b4a14b6f9a11fae7831aaf32f09007a
[INFO] running `Command { std: "docker" "start" "-a" "c7476a14eed6e8b179ecc346488f20d95b4a14b6f9a11fae7831aaf32f09007a", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/fizzbuzz_rs-d83281db6888e165
[INFO] [stdout] 
[INFO] [stdout] running 9 tests
[INFO] [stdout] test enumeration::tests::into ... ok
[INFO] [stdout] test enumeration::tests::display ... ok
[INFO] [stdout] test display::test::it_works ... 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 `Command { std: "docker" "inspect" "c7476a14eed6e8b179ecc346488f20d95b4a14b6f9a11fae7831aaf32f09007a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c7476a14eed6e8b179ecc346488f20d95b4a14b6f9a11fae7831aaf32f09007a", kill_on_drop: false }`
[INFO] [stdout] c7476a14eed6e8b179ecc346488f20d95b4a14b6f9a11fae7831aaf32f09007a