[INFO] updating cached repository sketchet/kakuna
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/sketchet/kakuna
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/sketchet/kakuna" "work/ex/beta-1.38-1/sources/1.37.0/gh/sketchet/kakuna"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/sketchet/kakuna'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/sketchet/kakuna" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/sketchet/kakuna"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/sketchet/kakuna'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] da2e3c9acc7bf9f7c9cc03905ede28fcc3429bf6
[INFO] sha for GitHub repo sketchet/kakuna: da2e3c9acc7bf9f7c9cc03905ede28fcc3429bf6
[INFO] validating manifest of sketchet/kakuna 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 sketchet/kakuna 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 sketchet/kakuna
[INFO] finished frobbing sketchet/kakuna
[INFO] frobbed toml for sketchet/kakuna written to work/ex/beta-1.38-1/sources/1.37.0/gh/sketchet/kakuna/Cargo.toml
[INFO] started frobbing sketchet/kakuna
[INFO] finished frobbing sketchet/kakuna
[INFO] frobbed toml for sketchet/kakuna written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/sketchet/kakuna/Cargo.toml
[INFO] crate sketchet/kakuna 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] [stderr] error: the lock file /mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/sketchet/kakuna/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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 sketchet/kakuna 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-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/sketchet/kakuna:/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] 2e22214c10d61d3ea751e5ed6fee34598b2c1635dad78928a3a7cd6e32c55adf
[INFO] running `"docker" "start" "-a" "2e22214c10d61d3ea751e5ed6fee34598b2c1635dad78928a3a7cd6e32c55adf"`
[INFO] [stderr]    Compiling kakuna v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/main.rs:11:9
[INFO] [stderr]    |
[INFO] [stderr] 11 |     for x in 0..num {
[INFO] [stderr]    |         ^ help: consider prefixing with an underscore: `_x`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.84s
[INFO] running `"docker" "inspect" "2e22214c10d61d3ea751e5ed6fee34598b2c1635dad78928a3a7cd6e32c55adf"`
[INFO] running `"docker" "rm" "-f" "2e22214c10d61d3ea751e5ed6fee34598b2c1635dad78928a3a7cd6e32c55adf"`
[INFO] [stdout] 2e22214c10d61d3ea751e5ed6fee34598b2c1635dad78928a3a7cd6e32c55adf
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/sketchet/kakuna:/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] c5ecd5bf2483a271a0ff35a7483153e45e1b9a82b1a5bd395841b2e11d028c1e
[INFO] running `"docker" "start" "-a" "c5ecd5bf2483a271a0ff35a7483153e45e1b9a82b1a5bd395841b2e11d028c1e"`
[INFO] [stderr]    Compiling kakuna v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/main.rs:11:9
[INFO] [stderr]    |
[INFO] [stderr] 11 |     for x in 0..num {
[INFO] [stderr]    |         ^ help: consider prefixing with an underscore: `_x`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.76s
[INFO] running `"docker" "inspect" "c5ecd5bf2483a271a0ff35a7483153e45e1b9a82b1a5bd395841b2e11d028c1e"`
[INFO] running `"docker" "rm" "-f" "c5ecd5bf2483a271a0ff35a7483153e45e1b9a82b1a5bd395841b2e11d028c1e"`
[INFO] [stdout] c5ecd5bf2483a271a0ff35a7483153e45e1b9a82b1a5bd395841b2e11d028c1e
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/sketchet/kakuna:/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] 733901afbae411e733e1f00185ec75c2dbbe34965b2765a95ff6e5574f057fe6
[INFO] running `"docker" "start" "-a" "733901afbae411e733e1f00185ec75c2dbbe34965b2765a95ff6e5574f057fe6"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/kakuna-08f604f80c138fc8
[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" "733901afbae411e733e1f00185ec75c2dbbe34965b2765a95ff6e5574f057fe6"`
[INFO] running `"docker" "rm" "-f" "733901afbae411e733e1f00185ec75c2dbbe34965b2765a95ff6e5574f057fe6"`
[INFO] [stdout] 733901afbae411e733e1f00185ec75c2dbbe34965b2765a95ff6e5574f057fe6