[INFO] updating cached repository theOver1ord/fib_rabbits
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/theOver1ord/fib_rabbits
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/theOver1ord/fib_rabbits" "work/ex/beta-1.38-1/sources/1.37.0/gh/theOver1ord/fib_rabbits"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/theOver1ord/fib_rabbits'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/theOver1ord/fib_rabbits" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/theOver1ord/fib_rabbits"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/theOver1ord/fib_rabbits'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] cc6aa48515f2e3088d8aa6086040dab767585b6b
[INFO] sha for GitHub repo theOver1ord/fib_rabbits: cc6aa48515f2e3088d8aa6086040dab767585b6b
[INFO] validating manifest of theOver1ord/fib_rabbits 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 theOver1ord/fib_rabbits 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 theOver1ord/fib_rabbits
[INFO] finished frobbing theOver1ord/fib_rabbits
[INFO] frobbed toml for theOver1ord/fib_rabbits written to work/ex/beta-1.38-1/sources/1.37.0/gh/theOver1ord/fib_rabbits/Cargo.toml
[INFO] started frobbing theOver1ord/fib_rabbits
[INFO] finished frobbing theOver1ord/fib_rabbits
[INFO] frobbed toml for theOver1ord/fib_rabbits written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/theOver1ord/fib_rabbits/Cargo.toml
[INFO] crate theOver1ord/fib_rabbits 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 theOver1ord/fib_rabbits 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-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/theOver1ord/fib_rabbits:/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] 1ad16ec281cf1135245b6937e178bb41d23523fa168a4a017af58fcf1284fd75
[INFO] running `"docker" "start" "-a" "1ad16ec281cf1135245b6937e178bb41d23523fa168a4a017af58fcf1284fd75"`
[INFO] [stderr]    Compiling fib_rabbits v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]  --> src/main.rs:9:9
[INFO] [stderr]   |
[INFO] [stderr] 9 |     for i in 0..t-1 {
[INFO] [stderr]   |         ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.64s
[INFO] running `"docker" "inspect" "1ad16ec281cf1135245b6937e178bb41d23523fa168a4a017af58fcf1284fd75"`
[INFO] running `"docker" "rm" "-f" "1ad16ec281cf1135245b6937e178bb41d23523fa168a4a017af58fcf1284fd75"`
[INFO] [stdout] 1ad16ec281cf1135245b6937e178bb41d23523fa168a4a017af58fcf1284fd75
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/theOver1ord/fib_rabbits:/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] 89eb0139b06ac8173d62e0b4544533f848cd3b60ca9773637be122b4e6f8ddaf
[INFO] running `"docker" "start" "-a" "89eb0139b06ac8173d62e0b4544533f848cd3b60ca9773637be122b4e6f8ddaf"`
[INFO] [stderr]    Compiling fib_rabbits v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]  --> src/main.rs:9:9
[INFO] [stderr]   |
[INFO] [stderr] 9 |     for i in 0..t-1 {
[INFO] [stderr]   |         ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.74s
[INFO] running `"docker" "inspect" "89eb0139b06ac8173d62e0b4544533f848cd3b60ca9773637be122b4e6f8ddaf"`
[INFO] running `"docker" "rm" "-f" "89eb0139b06ac8173d62e0b4544533f848cd3b60ca9773637be122b4e6f8ddaf"`
[INFO] [stdout] 89eb0139b06ac8173d62e0b4544533f848cd3b60ca9773637be122b4e6f8ddaf
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/theOver1ord/fib_rabbits:/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] 5e422ce6bb35e6d06708bde54e597c84a2db4ec18c1d6ae122996e3f83d6a859
[INFO] running `"docker" "start" "-a" "5e422ce6bb35e6d06708bde54e597c84a2db4ec18c1d6ae122996e3f83d6a859"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/fib_rabbits-160200d5e1e5153b
[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" "5e422ce6bb35e6d06708bde54e597c84a2db4ec18c1d6ae122996e3f83d6a859"`
[INFO] running `"docker" "rm" "-f" "5e422ce6bb35e6d06708bde54e597c84a2db4ec18c1d6ae122996e3f83d6a859"`
[INFO] [stdout] 5e422ce6bb35e6d06708bde54e597c84a2db4ec18c1d6ae122996e3f83d6a859