[INFO] updating cached repository justdiscinaround/fizzbuzz_rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/justdiscinaround/fizzbuzz_rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/justdiscinaround/fizzbuzz_rust" "work/ex/beta-1.38-1/sources/1.37.0/gh/justdiscinaround/fizzbuzz_rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/justdiscinaround/fizzbuzz_rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/justdiscinaround/fizzbuzz_rust" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/justdiscinaround/fizzbuzz_rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/justdiscinaround/fizzbuzz_rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] bb253bd6dcc998cdd1cba6107298ec84906c3ff7
[INFO] sha for GitHub repo justdiscinaround/fizzbuzz_rust: bb253bd6dcc998cdd1cba6107298ec84906c3ff7
[INFO] validating manifest of justdiscinaround/fizzbuzz_rust 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 justdiscinaround/fizzbuzz_rust 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 justdiscinaround/fizzbuzz_rust
[INFO] finished frobbing justdiscinaround/fizzbuzz_rust
[INFO] frobbed toml for justdiscinaround/fizzbuzz_rust written to work/ex/beta-1.38-1/sources/1.37.0/gh/justdiscinaround/fizzbuzz_rust/Cargo.toml
[INFO] started frobbing justdiscinaround/fizzbuzz_rust
[INFO] finished frobbing justdiscinaround/fizzbuzz_rust
[INFO] frobbed toml for justdiscinaround/fizzbuzz_rust written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/justdiscinaround/fizzbuzz_rust/Cargo.toml
[INFO] crate justdiscinaround/fizzbuzz_rust 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] testing justdiscinaround/fizzbuzz_rust 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-2/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/justdiscinaround/fizzbuzz_rust:/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] 4579da3c2c569cceb75df1b9f44c4046f2335906279b1767e6e63f202067d637
[INFO] running `"docker" "start" "-a" "4579da3c2c569cceb75df1b9f44c4046f2335906279b1767e6e63f202067d637"`
[INFO] [stderr]    Compiling fizzbuzz v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]  --> src/main.rs:2:16
[INFO] [stderr]   |
[INFO] [stderr] 2 |     for num in (0..1000) {
[INFO] [stderr]   |                ^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.31s
[INFO] running `"docker" "inspect" "4579da3c2c569cceb75df1b9f44c4046f2335906279b1767e6e63f202067d637"`
[INFO] running `"docker" "rm" "-f" "4579da3c2c569cceb75df1b9f44c4046f2335906279b1767e6e63f202067d637"`
[INFO] [stdout] 4579da3c2c569cceb75df1b9f44c4046f2335906279b1767e6e63f202067d637
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/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/justdiscinaround/fizzbuzz_rust:/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] ac2421512a37e499fdf4165ccef02d8e2eb89212cb875d0a74ec0c81e10e0bc1
[INFO] running `"docker" "start" "-a" "ac2421512a37e499fdf4165ccef02d8e2eb89212cb875d0a74ec0c81e10e0bc1"`
[INFO] [stderr]    Compiling fizzbuzz v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]  --> src/main.rs:2:16
[INFO] [stderr]   |
[INFO] [stderr] 2 |     for num in (0..1000) {
[INFO] [stderr]   |                ^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.39s
[INFO] running `"docker" "inspect" "ac2421512a37e499fdf4165ccef02d8e2eb89212cb875d0a74ec0c81e10e0bc1"`
[INFO] running `"docker" "rm" "-f" "ac2421512a37e499fdf4165ccef02d8e2eb89212cb875d0a74ec0c81e10e0bc1"`
[INFO] [stdout] ac2421512a37e499fdf4165ccef02d8e2eb89212cb875d0a74ec0c81e10e0bc1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/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/justdiscinaround/fizzbuzz_rust:/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] 6e7c021502366dee497e1a20ac2bdd38dcb2dd235139731c8ef2cfd02d625266
[INFO] running `"docker" "start" "-a" "6e7c021502366dee497e1a20ac2bdd38dcb2dd235139731c8ef2cfd02d625266"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/fizzbuzz-b46221750b17dcd8
[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
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "6e7c021502366dee497e1a20ac2bdd38dcb2dd235139731c8ef2cfd02d625266"`
[INFO] running `"docker" "rm" "-f" "6e7c021502366dee497e1a20ac2bdd38dcb2dd235139731c8ef2cfd02d625266"`
[INFO] [stdout] 6e7c021502366dee497e1a20ac2bdd38dcb2dd235139731c8ef2cfd02d625266