[INFO] updating cached repository dakuenjery/Shellsort
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/dakuenjery/Shellsort
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/dakuenjery/Shellsort" "work/ex/beta-1.37-6/sources/1.36.0/gh/dakuenjery/Shellsort"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/dakuenjery/Shellsort'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/dakuenjery/Shellsort" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/dakuenjery/Shellsort"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/dakuenjery/Shellsort'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 293f1feed139754e9f17a94eb6ca17ee6a047dcb
[INFO] sha for GitHub repo dakuenjery/Shellsort: 293f1feed139754e9f17a94eb6ca17ee6a047dcb
[INFO] validating manifest of dakuenjery/Shellsort on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of dakuenjery/Shellsort on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing dakuenjery/Shellsort
[INFO] finished frobbing dakuenjery/Shellsort
[INFO] frobbed toml for dakuenjery/Shellsort written to work/ex/beta-1.37-6/sources/1.36.0/gh/dakuenjery/Shellsort/Cargo.toml
[INFO] started frobbing dakuenjery/Shellsort
[INFO] finished frobbing dakuenjery/Shellsort
[INFO] frobbed toml for dakuenjery/Shellsort written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/dakuenjery/Shellsort/Cargo.toml
[INFO] crate dakuenjery/Shellsort already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing dakuenjery/Shellsort against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/dakuenjery/Shellsort:/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-2019-07-23" "build" "--frozen"`
[INFO] [stdout] c80f046e0bb9981cb074764fb4f782b23b5d957297ce830c897d11bb6e6d3580
[INFO] running `"docker" "start" "-a" "c80f046e0bb9981cb074764fb4f782b23b5d957297ce830c897d11bb6e6d3580"`
[INFO] [stderr]    Compiling shell v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: a method with this name may be added to the standard library in the future
[INFO] [stderr]   --> src/main.rs:47:31
[INFO] [stderr]    |
[INFO] [stderr] 47 |     println!("arr {}", if arr.is_sorted() { "is sorted" } else { "not sorted!" });
[INFO] [stderr]    |                               ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unstable_name_collisions)] on by default
[INFO] [stderr]    = warning: once this method is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stderr]    = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stderr]    = help: call with fully qualified syntax `Sortable::is_sorted(...)` to keep using the current method
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.90s
[INFO] running `"docker" "inspect" "c80f046e0bb9981cb074764fb4f782b23b5d957297ce830c897d11bb6e6d3580"`
[INFO] running `"docker" "rm" "-f" "c80f046e0bb9981cb074764fb4f782b23b5d957297ce830c897d11bb6e6d3580"`
[INFO] [stdout] c80f046e0bb9981cb074764fb4f782b23b5d957297ce830c897d11bb6e6d3580
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/dakuenjery/Shellsort:/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-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] c4577e8e19cec6ae413149d9d491b5d2627268ed9ad9a429b213281ea1b7c7f2
[INFO] running `"docker" "start" "-a" "c4577e8e19cec6ae413149d9d491b5d2627268ed9ad9a429b213281ea1b7c7f2"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling shell v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: a method with this name may be added to the standard library in the future
[INFO] [stderr]   --> src/main.rs:47:31
[INFO] [stderr]    |
[INFO] [stderr] 47 |     println!("arr {}", if arr.is_sorted() { "is sorted" } else { "not sorted!" });
[INFO] [stderr]    |                               ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unstable_name_collisions)] on by default
[INFO] [stderr]    = warning: once this method is added to the standard library, the ambiguity may cause an error or change in behavior!
[INFO] [stderr]    = note: for more information, see issue #48919 <https://github.com/rust-lang/rust/issues/48919>
[INFO] [stderr]    = help: call with fully qualified syntax `Sortable::is_sorted(...)` to keep using the current method
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.91s
[INFO] running `"docker" "inspect" "c4577e8e19cec6ae413149d9d491b5d2627268ed9ad9a429b213281ea1b7c7f2"`
[INFO] running `"docker" "rm" "-f" "c4577e8e19cec6ae413149d9d491b5d2627268ed9ad9a429b213281ea1b7c7f2"`
[INFO] [stdout] c4577e8e19cec6ae413149d9d491b5d2627268ed9ad9a429b213281ea1b7c7f2
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/dakuenjery/Shellsort:/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-2019-07-23" "test" "--frozen"`
[INFO] [stdout] f16bfbc776a90d9b505cf1825b0312a5e2f38e43dcc8ebb680d209dbb5ec90ec
[INFO] running `"docker" "start" "-a" "f16bfbc776a90d9b505cf1825b0312a5e2f38e43dcc8ebb680d209dbb5ec90ec"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/shell-921b91bad7defe9c
[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" "f16bfbc776a90d9b505cf1825b0312a5e2f38e43dcc8ebb680d209dbb5ec90ec"`
[INFO] running `"docker" "rm" "-f" "f16bfbc776a90d9b505cf1825b0312a5e2f38e43dcc8ebb680d209dbb5ec90ec"`
[INFO] [stdout] f16bfbc776a90d9b505cf1825b0312a5e2f38e43dcc8ebb680d209dbb5ec90ec