[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-1.37-6/sources/1.36.0/gh/ANtlord/system_ladder"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/ANtlord/system_ladder'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/ANtlord/system_ladder" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/ANtlord/system_ladder"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/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 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of ANtlord/system_ladder 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 ANtlord/system_ladder
[INFO] finished frobbing ANtlord/system_ladder
[INFO] frobbed toml for ANtlord/system_ladder written to work/ex/beta-1.37-6/sources/1.36.0/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-1.37-6/sources/beta-2019-07-23/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" "+1.36.0" "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 ANtlord/system_ladder 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-6/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/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" "+beta-2019-07-23" "build" "--frozen"`
[INFO] [stdout] c38e89351aa484acb7cc58f0bbd076fe8487a2375ba67d427435b9cf5a5f54cc
[INFO] running `"docker" "start" "-a" "c38e89351aa484acb7cc58f0bbd076fe8487a2375ba67d427435b9cf5a5f54cc"`
[INFO] [stderr]    Compiling system_ladder v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.88s
[INFO] running `"docker" "inspect" "c38e89351aa484acb7cc58f0bbd076fe8487a2375ba67d427435b9cf5a5f54cc"`
[INFO] running `"docker" "rm" "-f" "c38e89351aa484acb7cc58f0bbd076fe8487a2375ba67d427435b9cf5a5f54cc"`
[INFO] [stdout] c38e89351aa484acb7cc58f0bbd076fe8487a2375ba67d427435b9cf5a5f54cc
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/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/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" "+beta-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] f7fa718e703fc88c2de0bf3f6649d757d6b1d640d993c2b6b88a5d8782131aad
[INFO] running `"docker" "start" "-a" "f7fa718e703fc88c2de0bf3f6649d757d6b1d640d993c2b6b88a5d8782131aad"`
[INFO] [stderr]    Compiling system_ladder v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.94s
[INFO] running `"docker" "inspect" "f7fa718e703fc88c2de0bf3f6649d757d6b1d640d993c2b6b88a5d8782131aad"`
[INFO] running `"docker" "rm" "-f" "f7fa718e703fc88c2de0bf3f6649d757d6b1d640d993c2b6b88a5d8782131aad"`
[INFO] [stdout] f7fa718e703fc88c2de0bf3f6649d757d6b1d640d993c2b6b88a5d8782131aad
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/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/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" "+beta-2019-07-23" "test" "--frozen"`
[INFO] [stdout] a019dbf2681a7c127b3cd9c72be08fe1fcdd54eda166f886296cca95c721af2f
[INFO] running `"docker" "start" "-a" "a019dbf2681a7c127b3cd9c72be08fe1fcdd54eda166f886296cca95c721af2f"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/system_ladder-466db7e79c699c56
[INFO] [stdout] 
[INFO] [stdout] running 21 tests
[INFO] [stdout] test list::item::tests::link_eq ... ok
[INFO] [stdout] test list::item::tests::link_null_eq ... ok
[INFO] [stdout] test list::tests::push_front ... ok
[INFO] [stdout] test tree::tests::one ... ok
[INFO] [stdout] test list::tests::push_back ... ok
[INFO] [stdout] test list::tests::pop_front ... ok
[INFO] [stdout] test list::tests::iter_empty ... ok
[INFO] [stdout] test list::tests::pop_back ... ok
[INFO] [stdout] test list::tests::iter_filled ... ok
[INFO] [stdout] test list::tests::create_first ... ok
[INFO] [stdout] test tree::tests::sort_in_the_end ... ok
[INFO] [stdout] test utils::tests::equal_elements ... ok
[INFO] [stdout] test utils::tests::equal_elements_with_pivot_duplicate ... ok
[INFO] [stdout] test utils::tests::even_elements ... ok
[INFO] [stdout] test utils::tests::odd_elements ... 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" "a019dbf2681a7c127b3cd9c72be08fe1fcdd54eda166f886296cca95c721af2f"`
[INFO] running `"docker" "rm" "-f" "a019dbf2681a7c127b3cd9c72be08fe1fcdd54eda166f886296cca95c721af2f"`
[INFO] [stdout] a019dbf2681a7c127b3cd9c72be08fe1fcdd54eda166f886296cca95c721af2f