[INFO] updating cached repository JoshMcguigan/fizzbuzz-rs [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/JoshMcguigan/fizzbuzz-rs [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/JoshMcguigan/fizzbuzz-rs" "work/ex/beta-1.38-1/sources/1.37.0/gh/JoshMcguigan/fizzbuzz-rs"` [INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/JoshMcguigan/fizzbuzz-rs'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/JoshMcguigan/fizzbuzz-rs" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/JoshMcguigan/fizzbuzz-rs"` [INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/JoshMcguigan/fizzbuzz-rs'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] a112853d70f515e16e9b21a148d1941b16e46bdb [INFO] sha for GitHub repo JoshMcguigan/fizzbuzz-rs: a112853d70f515e16e9b21a148d1941b16e46bdb [INFO] validating manifest of JoshMcguigan/fizzbuzz-rs on toolchain 1.37.0 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of JoshMcguigan/fizzbuzz-rs on toolchain beta-2019-08-13 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing JoshMcguigan/fizzbuzz-rs [INFO] finished frobbing JoshMcguigan/fizzbuzz-rs [INFO] frobbed toml for JoshMcguigan/fizzbuzz-rs written to work/ex/beta-1.38-1/sources/1.37.0/gh/JoshMcguigan/fizzbuzz-rs/Cargo.toml [INFO] started frobbing JoshMcguigan/fizzbuzz-rs [INFO] finished frobbing JoshMcguigan/fizzbuzz-rs [INFO] frobbed toml for JoshMcguigan/fizzbuzz-rs written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/JoshMcguigan/fizzbuzz-rs/Cargo.toml [INFO] crate JoshMcguigan/fizzbuzz-rs already has a lockfile, it will not be regenerated [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] testing JoshMcguigan/fizzbuzz-rs against beta-2019-08-13 for beta-1.38-1 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/JoshMcguigan/fizzbuzz-rs:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-08-13" "build" "--frozen"` [INFO] [stdout] f3e8974ce27fdc5c68add25d74101911dfe3fd78d629e876f012a26600480a64 [INFO] running `"docker" "start" "-a" "f3e8974ce27fdc5c68add25d74101911dfe3fd78d629e876f012a26600480a64"` [INFO] [stderr] Compiling fizzbuzz-rs v0.1.0 (/opt/crater/workdir) [INFO] [stderr] warning: struct is never constructed: `FizzBuzzer` [INFO] [stderr] --> src/func.rs:1:1 [INFO] [stderr] | [INFO] [stderr] 1 | struct FizzBuzzer { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: method is never used: `new` [INFO] [stderr] --> src/func.rs:15:5 [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: method is never used: `eval` [INFO] [stderr] --> src/func.rs:19:5 [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:2:1 [INFO] [stderr] | [INFO] [stderr] 2 | / fn fizzbuzz<'a, T>(nums: T) [INFO] [stderr] 3 | | where T: IntoIterator [INFO] [stderr] 4 | | { [INFO] [stderr] 5 | | for num in nums { [INFO] [stderr] ... | [INFO] [stderr] 15 | | } [INFO] [stderr] 16 | | } [INFO] [stderr] | |_^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `fizzbuzz_vec` [INFO] [stderr] --> src/flexible.rs:18:1 [INFO] [stderr] | [INFO] [stderr] 18 | fn fizzbuzz_vec(nums: &Vec) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `FizzBuzz` [INFO] [stderr] --> src/display.rs:5:1 [INFO] [stderr] | [INFO] [stderr] 5 | struct FizzBuzz(usize); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `FizzBuzzer` [INFO] [stderr] --> src/iterator.rs:1:1 [INFO] [stderr] | [INFO] [stderr] 1 | struct FizzBuzzer { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `new` [INFO] [stderr] --> src/iterator.rs:7:5 [INFO] [stderr] | [INFO] [stderr] 7 | fn new(starting_value: u32, length: u32) -> Self { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.85s [INFO] running `"docker" "inspect" "f3e8974ce27fdc5c68add25d74101911dfe3fd78d629e876f012a26600480a64"` [INFO] running `"docker" "rm" "-f" "f3e8974ce27fdc5c68add25d74101911dfe3fd78d629e876f012a26600480a64"` [INFO] [stdout] f3e8974ce27fdc5c68add25d74101911dfe3fd78d629e876f012a26600480a64 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/JoshMcguigan/fizzbuzz-rs:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-08-13" "test" "--frozen" "--no-run"` [INFO] [stdout] f88c01cc72a0e4bc7850a33fdbebf78d11b708b7a670b208236947a0bfdd7214 [INFO] running `"docker" "start" "-a" "f88c01cc72a0e4bc7850a33fdbebf78d11b708b7a670b208236947a0bfdd7214"` [INFO] [stderr] Compiling fizzbuzz-rs v0.1.0 (/opt/crater/workdir) [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 1.24s [INFO] running `"docker" "inspect" "f88c01cc72a0e4bc7850a33fdbebf78d11b708b7a670b208236947a0bfdd7214"` [INFO] running `"docker" "rm" "-f" "f88c01cc72a0e4bc7850a33fdbebf78d11b708b7a670b208236947a0bfdd7214"` [INFO] [stdout] f88c01cc72a0e4bc7850a33fdbebf78d11b708b7a670b208236947a0bfdd7214 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/JoshMcguigan/fizzbuzz-rs:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-08-13" "test" "--frozen"` [INFO] [stdout] d497b1f88c34fc662fa86ccd245c0dcb8c33047221c37b3be680db1ecce6a4df [INFO] running `"docker" "start" "-a" "d497b1f88c34fc662fa86ccd245c0dcb8c33047221c37b3be680db1ecce6a4df"` [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.02s [INFO] [stderr] Running /opt/crater/target/debug/deps/fizzbuzz_rs-23bf07ae0f10e03d [INFO] [stdout] [INFO] [stdout] running 9 tests [INFO] [stdout] test flexible::tests::it_works ... ok [INFO] [stdout] test enumeration::tests::display ... ok [INFO] [stdout] test func::tests::it_works ... ok [INFO] [stdout] test display::test::it_works ... ok [INFO] [stdout] test enumeration::tests::from ... ok [INFO] [stdout] test enumeration::tests::into ... ok [INFO] [stdout] test intro::tests::using_match ... ok [INFO] [stdout] test iterator::tests::it_works ... ok [INFO] [stdout] test intro::tests::using_if_else ... 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" "d497b1f88c34fc662fa86ccd245c0dcb8c33047221c37b3be680db1ecce6a4df"` [INFO] running `"docker" "rm" "-f" "d497b1f88c34fc662fa86ccd245c0dcb8c33047221c37b3be680db1ecce6a4df"` [INFO] [stdout] d497b1f88c34fc662fa86ccd245c0dcb8c33047221c37b3be680db1ecce6a4df