[INFO] updating cached repository euc/hihi
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/euc/hihi
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/euc/hihi" "work/ex/beta-1.38-1/sources/1.37.0/gh/euc/hihi"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/euc/hihi'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/euc/hihi" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/euc/hihi"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/euc/hihi'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] ee11c309cdbb3f6c47766c124325f6249f37fb6d
[INFO] sha for GitHub repo euc/hihi: ee11c309cdbb3f6c47766c124325f6249f37fb6d
[INFO] validating manifest of euc/hihi 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 euc/hihi 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 euc/hihi
[INFO] finished frobbing euc/hihi
[INFO] frobbed toml for euc/hihi written to work/ex/beta-1.38-1/sources/1.37.0/gh/euc/hihi/Cargo.toml
[INFO] started frobbing euc/hihi
[INFO] finished frobbing euc/hihi
[INFO] frobbed toml for euc/hihi written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/euc/hihi/Cargo.toml
[INFO] crate euc/hihi 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 euc/hihi 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-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/euc/hihi:/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] bd6f93f1c374ce85ff90ee083ce9886e7da91696328cf2a28f82fe39513473f1
[INFO] running `"docker" "start" "-a" "bd6f93f1c374ce85ff90ee083ce9886e7da91696328cf2a28f82fe39513473f1"`
[INFO] [stderr]    Compiling rand v0.3.16
[INFO] [stderr]    Compiling markov v0.0.31
[INFO] [stderr]    Compiling hihi v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/main.rs:26:9
[INFO] [stderr]    |
[INFO] [stderr] 26 |     for x in 0..4 {
[INFO] [stderr]    |         ^ help: consider prefixing with an underscore: `_x`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `output`
[INFO] [stderr]   --> src/main.rs:38:6
[INFO] [stderr]    |
[INFO] [stderr] 38 |     let output = if cfg!(target_os = "windows") {
[INFO] [stderr]    |         ^^^^^^ help: consider prefixing with an underscore: `_output`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.58s
[INFO] running `"docker" "inspect" "bd6f93f1c374ce85ff90ee083ce9886e7da91696328cf2a28f82fe39513473f1"`
[INFO] running `"docker" "rm" "-f" "bd6f93f1c374ce85ff90ee083ce9886e7da91696328cf2a28f82fe39513473f1"`
[INFO] [stdout] bd6f93f1c374ce85ff90ee083ce9886e7da91696328cf2a28f82fe39513473f1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/euc/hihi:/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] 182c9fe9f9be55ffa4e6edb8c64f56046d74c99453c80f89a02272e0f1ce0ec9
[INFO] running `"docker" "start" "-a" "182c9fe9f9be55ffa4e6edb8c64f56046d74c99453c80f89a02272e0f1ce0ec9"`
[INFO] [stderr]    Compiling hihi v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/main.rs:26:9
[INFO] [stderr]    |
[INFO] [stderr] 26 |     for x in 0..4 {
[INFO] [stderr]    |         ^ help: consider prefixing with an underscore: `_x`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `output`
[INFO] [stderr]   --> src/main.rs:38:6
[INFO] [stderr]    |
[INFO] [stderr] 38 |     let output = if cfg!(target_os = "windows") {
[INFO] [stderr]    |         ^^^^^^ help: consider prefixing with an underscore: `_output`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.50s
[INFO] running `"docker" "inspect" "182c9fe9f9be55ffa4e6edb8c64f56046d74c99453c80f89a02272e0f1ce0ec9"`
[INFO] running `"docker" "rm" "-f" "182c9fe9f9be55ffa4e6edb8c64f56046d74c99453c80f89a02272e0f1ce0ec9"`
[INFO] [stdout] 182c9fe9f9be55ffa4e6edb8c64f56046d74c99453c80f89a02272e0f1ce0ec9
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/euc/hihi:/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] efb5d0db1beac64b8b3263b3131698fe40cb63893c4226fac2f687a50c1a78e2
[INFO] running `"docker" "start" "-a" "efb5d0db1beac64b8b3263b3131698fe40cb63893c4226fac2f687a50c1a78e2"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/hihi-b22fb8f10f0218cf
[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" "efb5d0db1beac64b8b3263b3131698fe40cb63893c4226fac2f687a50c1a78e2"`
[INFO] running `"docker" "rm" "-f" "efb5d0db1beac64b8b3263b3131698fe40cb63893c4226fac2f687a50c1a78e2"`
[INFO] [stdout] efb5d0db1beac64b8b3263b3131698fe40cb63893c4226fac2f687a50c1a78e2