[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-1.38-1/sources/1.37.0/gh/dakuenjery/Shellsort"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/dakuenjery/Shellsort'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/dakuenjery/Shellsort" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/dakuenjery/Shellsort"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/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 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of dakuenjery/Shellsort 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 dakuenjery/Shellsort
[INFO] finished frobbing dakuenjery/Shellsort
[INFO] frobbed toml for dakuenjery/Shellsort written to work/ex/beta-1.38-1/sources/1.37.0/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-1.38-1/sources/beta-2019-08-13/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" "+1.37.0" "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 dakuenjery/Shellsort against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/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-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 9efb0070c1a9fb5065774bbd55880de0675c8f8355843f464249fae74ac98d83
[INFO] running `"docker" "start" "-a" "9efb0070c1a9fb5065774bbd55880de0675c8f8355843f464249fae74ac98d83"`
[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 0.86s
[INFO] running `"docker" "inspect" "9efb0070c1a9fb5065774bbd55880de0675c8f8355843f464249fae74ac98d83"`
[INFO] running `"docker" "rm" "-f" "9efb0070c1a9fb5065774bbd55880de0675c8f8355843f464249fae74ac98d83"`
[INFO] [stdout] 9efb0070c1a9fb5065774bbd55880de0675c8f8355843f464249fae74ac98d83
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/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-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] 51552c2d86391c9792a1746ba1a47d21750ba437a3f943084a3359c65e0a2d35
[INFO] running `"docker" "start" "-a" "51552c2d86391c9792a1746ba1a47d21750ba437a3f943084a3359c65e0a2d35"`
[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 0.60s
[INFO] running `"docker" "inspect" "51552c2d86391c9792a1746ba1a47d21750ba437a3f943084a3359c65e0a2d35"`
[INFO] running `"docker" "rm" "-f" "51552c2d86391c9792a1746ba1a47d21750ba437a3f943084a3359c65e0a2d35"`
[INFO] [stdout] 51552c2d86391c9792a1746ba1a47d21750ba437a3f943084a3359c65e0a2d35
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/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-2019-08-13" "test" "--frozen"`
[INFO] [stdout] 99ee9177a060ee19923e2e8a683a205e54018b512e8f5022010a7bba45d20abf
[INFO] running `"docker" "start" "-a" "99ee9177a060ee19923e2e8a683a205e54018b512e8f5022010a7bba45d20abf"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/shell-42d0adca1711282a
[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" "99ee9177a060ee19923e2e8a683a205e54018b512e8f5022010a7bba45d20abf"`
[INFO] running `"docker" "rm" "-f" "99ee9177a060ee19923e2e8a683a205e54018b512e8f5022010a7bba45d20abf"`
[INFO] [stdout] 99ee9177a060ee19923e2e8a683a205e54018b512e8f5022010a7bba45d20abf