[INFO] updating cached repository ANtlord/system_ladder
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/ANtlord/system_ladder
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/ANtlord/system_ladder" "work/ex/beta-1.38-1/sources/1.37.0/gh/ANtlord/system_ladder"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/ANtlord/system_ladder'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/ANtlord/system_ladder" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/ANtlord/system_ladder"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/ANtlord/system_ladder'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] dc9701401190b08d1a639074ce6594f5179b1247
[INFO] sha for GitHub repo ANtlord/system_ladder: dc9701401190b08d1a639074ce6594f5179b1247
[INFO] validating manifest of ANtlord/system_ladder 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 ANtlord/system_ladder 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 ANtlord/system_ladder
[INFO] finished frobbing ANtlord/system_ladder
[INFO] frobbed toml for ANtlord/system_ladder written to work/ex/beta-1.38-1/sources/1.37.0/gh/ANtlord/system_ladder/Cargo.toml
[INFO] started frobbing ANtlord/system_ladder
[INFO] finished frobbing ANtlord/system_ladder
[INFO] frobbed toml for ANtlord/system_ladder written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/ANtlord/system_ladder/Cargo.toml
[INFO] crate ANtlord/system_ladder 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing ANtlord/system_ladder 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-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/ANtlord/system_ladder:/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] dbde31ddfae3a2276cf2b64bae2b793c9fe3db9586eadd2bf0318cf558b6a3a9
[INFO] running `"docker" "start" "-a" "dbde31ddfae3a2276cf2b64bae2b793c9fe3db9586eadd2bf0318cf558b6a3a9"`
[INFO] [stderr]    Compiling system_ladder v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.78s
[INFO] running `"docker" "inspect" "dbde31ddfae3a2276cf2b64bae2b793c9fe3db9586eadd2bf0318cf558b6a3a9"`
[INFO] running `"docker" "rm" "-f" "dbde31ddfae3a2276cf2b64bae2b793c9fe3db9586eadd2bf0318cf558b6a3a9"`
[INFO] [stdout] dbde31ddfae3a2276cf2b64bae2b793c9fe3db9586eadd2bf0318cf558b6a3a9
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/ANtlord/system_ladder:/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] ba31cfb07fcc2d20956e6dd0231d6138dc067d8fb9e19cc6b12541d543bff2fe
[INFO] running `"docker" "start" "-a" "ba31cfb07fcc2d20956e6dd0231d6138dc067d8fb9e19cc6b12541d543bff2fe"`
[INFO] [stderr]    Compiling system_ladder v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.20s
[INFO] running `"docker" "inspect" "ba31cfb07fcc2d20956e6dd0231d6138dc067d8fb9e19cc6b12541d543bff2fe"`
[INFO] running `"docker" "rm" "-f" "ba31cfb07fcc2d20956e6dd0231d6138dc067d8fb9e19cc6b12541d543bff2fe"`
[INFO] [stdout] ba31cfb07fcc2d20956e6dd0231d6138dc067d8fb9e19cc6b12541d543bff2fe
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/ANtlord/system_ladder:/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] 5fbc7a73928592f86057e12c900025f15d22c3dcb39f8125cb64af09043be6da
[INFO] running `"docker" "start" "-a" "5fbc7a73928592f86057e12c900025f15d22c3dcb39f8125cb64af09043be6da"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/system_ladder-a558a14268b7b833
[INFO] [stdout] 
[INFO] [stdout] running 21 tests
[INFO] [stdout] test list::tests::create_first ... ok
[INFO] [stdout] test list::item::tests::link_eq ... ok
[INFO] [stdout] test list::item::tests::link_null_eq ... ok
[INFO] [stdout] test list::tests::pop_front ... ok
[INFO] [stdout] test list::tests::pop_back ... ok
[INFO] [stdout] test list::tests::iter_filled ... ok
[INFO] [stdout] test list::tests::iter_empty ... ok
[INFO] [stdout] test list::tests::push_back ... ok
[INFO] [stdout] test list::tests::push_front ... ok
[INFO] [stdout] test tree::tests::one ... ok
[INFO] [stdout] test utils::tests::even_elements ... ok
[INFO] [stdout] test utils::tests::odd_elements ... ok
[INFO] [stdout] test utils::tests::equal_elements_with_pivot_duplicate ... ok
[INFO] [stdout] test utils::tests::equal_elements ... ok
[INFO] [stdout] test tree::tests::sort_in_the_end ... ok
[INFO] [stdout] test utils::tests::single_element ... ok
[INFO] [stdout] test utils::tests::two_element ... ok
[INFO] [stdout] test utils::tests::two_sorted_elements ... ok
[INFO] [stdout] test utils::vector::tests::odds_more_than_evens ... ok
[INFO] [stdout] test utils::vector::tests::sample_no_duplicates ... ok
[INFO] [stdout] test utils::vector::tests::sample_with_duplicates ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 21 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "5fbc7a73928592f86057e12c900025f15d22c3dcb39f8125cb64af09043be6da"`
[INFO] running `"docker" "rm" "-f" "5fbc7a73928592f86057e12c900025f15d22c3dcb39f8125cb64af09043be6da"`
[INFO] [stdout] 5fbc7a73928592f86057e12c900025f15d22c3dcb39f8125cb64af09043be6da