[INFO] updating cached repository delaemon/rust-fizzbuzz
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/delaemon/rust-fizzbuzz
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/delaemon/rust-fizzbuzz" "work/ex/beta-1.38-1/sources/1.37.0/gh/delaemon/rust-fizzbuzz"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/delaemon/rust-fizzbuzz'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/delaemon/rust-fizzbuzz" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/delaemon/rust-fizzbuzz"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/delaemon/rust-fizzbuzz'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 9f1b7b7c8dc291690b8e70ec8ab973d0f1cf2d30
[INFO] sha for GitHub repo delaemon/rust-fizzbuzz: 9f1b7b7c8dc291690b8e70ec8ab973d0f1cf2d30
[INFO] validating manifest of delaemon/rust-fizzbuzz 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 delaemon/rust-fizzbuzz 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 delaemon/rust-fizzbuzz
[INFO] finished frobbing delaemon/rust-fizzbuzz
[INFO] frobbed toml for delaemon/rust-fizzbuzz written to work/ex/beta-1.38-1/sources/1.37.0/gh/delaemon/rust-fizzbuzz/Cargo.toml
[INFO] started frobbing delaemon/rust-fizzbuzz
[INFO] finished frobbing delaemon/rust-fizzbuzz
[INFO] frobbed toml for delaemon/rust-fizzbuzz written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/delaemon/rust-fizzbuzz/Cargo.toml
[INFO] crate delaemon/rust-fizzbuzz 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 delaemon/rust-fizzbuzz against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/delaemon/rust-fizzbuzz:/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 36a8815c76cc6aea71794a66de2626492f1c623f7cc13bf5e376897c352f7811
[INFO] running `"docker" "start" "-a" "36a8815c76cc6aea71794a66de2626492f1c623f7cc13bf5e376897c352f7811"`
[INFO] [stderr]    Compiling fizzbuzz v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: function is never used: `fizzbuzz1`
[INFO] [stderr]  --> src/main.rs:8:1
[INFO] [stderr]   |
[INFO] [stderr] 8 | fn fizzbuzz1(n:i32) -> String {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.67s
[INFO] running `"docker" "inspect" "36a8815c76cc6aea71794a66de2626492f1c623f7cc13bf5e376897c352f7811"`
[INFO] running `"docker" "rm" "-f" "36a8815c76cc6aea71794a66de2626492f1c623f7cc13bf5e376897c352f7811"`
[INFO] [stdout] 36a8815c76cc6aea71794a66de2626492f1c623f7cc13bf5e376897c352f7811
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/delaemon/rust-fizzbuzz:/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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] d5cfb69efa32354fd0e76d5f1211419d85582d3bf631ab6fc301e38da2ad855b
[INFO] running `"docker" "start" "-a" "d5cfb69efa32354fd0e76d5f1211419d85582d3bf631ab6fc301e38da2ad855b"`
[INFO] [stderr]    Compiling fizzbuzz v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: function is never used: `fizzbuzz1`
[INFO] [stderr]  --> src/main.rs:8:1
[INFO] [stderr]   |
[INFO] [stderr] 8 | fn fizzbuzz1(n:i32) -> String {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.63s
[INFO] running `"docker" "inspect" "d5cfb69efa32354fd0e76d5f1211419d85582d3bf631ab6fc301e38da2ad855b"`
[INFO] running `"docker" "rm" "-f" "d5cfb69efa32354fd0e76d5f1211419d85582d3bf631ab6fc301e38da2ad855b"`
[INFO] [stdout] d5cfb69efa32354fd0e76d5f1211419d85582d3bf631ab6fc301e38da2ad855b
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/delaemon/rust-fizzbuzz:/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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 9c4e39d03a4cd5d8886aba7ea7512054665a24a7237685c1f5301f2554d78f45
[INFO] running `"docker" "start" "-a" "9c4e39d03a4cd5d8886aba7ea7512054665a24a7237685c1f5301f2554d78f45"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/fizzbuzz-455ddfa537d37676
[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" "9c4e39d03a4cd5d8886aba7ea7512054665a24a7237685c1f5301f2554d78f45"`
[INFO] running `"docker" "rm" "-f" "9c4e39d03a4cd5d8886aba7ea7512054665a24a7237685c1f5301f2554d78f45"`
[INFO] [stdout] 9c4e39d03a4cd5d8886aba7ea7512054665a24a7237685c1f5301f2554d78f45