[INFO] updating cached repository https://github.com/ANtlord/system_ladder
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] [stderr] From https://github.com/ANtlord/system_ladder
[INFO] [stderr]  * [new branch]      rbtree     -> rbtree
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d716b3369a3c659c43f55e080663d599c95dd281
[INFO] testing ANtlord/system_ladder against try#03a1ea71b075ab964b5278bc6e74cd6c52c36ee0 for pr-74409
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FANtlord%2Fsystem_ladder" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ANtlord/system_ladder on toolchain 03a1ea71b075ab964b5278bc6e74cd6c52c36ee0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ANtlord/system_ladder
[INFO] finished tweaking git repo https://github.com/ANtlord/system_ladder
[INFO] tweaked toml for git repo https://github.com/ANtlord/system_ladder written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/ANtlord/system_ladder already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b759d6d7831429625eba3f6066b5a9a625c3accd6efd0487a49e05c8be93dae1
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "b759d6d7831429625eba3f6066b5a9a625c3accd6efd0487a49e05c8be93dae1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b759d6d7831429625eba3f6066b5a9a625c3accd6efd0487a49e05c8be93dae1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b759d6d7831429625eba3f6066b5a9a625c3accd6efd0487a49e05c8be93dae1", kill_on_drop: false }`
[INFO] [stdout] b759d6d7831429625eba3f6066b5a9a625c3accd6efd0487a49e05c8be93dae1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8dd8f589fee36ae59969967c2bca6e713a2fbc478af7f4e2cc979345fd259f97
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "8dd8f589fee36ae59969967c2bca6e713a2fbc478af7f4e2cc979345fd259f97", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.51
[INFO] [stderr]    Compiling system_ladder v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/fs/mod.rs:19:13
[INFO] [stdout]    |
[INFO] [stdout] 19 | type Func = Fn(&io::Result<fs::Metadata>, &TypeFlag, &Ftw) -> NftwResult;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&io::Result<fs::Metadata>, &TypeFlag, &Ftw) -> NftwResult`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.84s
[INFO] running `Command { std: "docker" "inspect" "8dd8f589fee36ae59969967c2bca6e713a2fbc478af7f4e2cc979345fd259f97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8dd8f589fee36ae59969967c2bca6e713a2fbc478af7f4e2cc979345fd259f97", kill_on_drop: false }`
[INFO] [stdout] 8dd8f589fee36ae59969967c2bca6e713a2fbc478af7f4e2cc979345fd259f97
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 06dc2de9dd8811dd0c1900052dfc96b21e79ecb9b3d3ef8d22612b104972e6b4
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "06dc2de9dd8811dd0c1900052dfc96b21e79ecb9b3d3ef8d22612b104972e6b4", kill_on_drop: false }`
[INFO] [stderr]    Compiling system_ladder v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/fs/mod.rs:19:13
[INFO] [stdout]    |
[INFO] [stdout] 19 | type Func = Fn(&io::Result<fs::Metadata>, &TypeFlag, &Ftw) -> NftwResult;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&io::Result<fs::Metadata>, &TypeFlag, &Ftw) -> NftwResult`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.59s
[INFO] running `Command { std: "docker" "inspect" "06dc2de9dd8811dd0c1900052dfc96b21e79ecb9b3d3ef8d22612b104972e6b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "06dc2de9dd8811dd0c1900052dfc96b21e79ecb9b3d3ef8d22612b104972e6b4", kill_on_drop: false }`
[INFO] [stdout] 06dc2de9dd8811dd0c1900052dfc96b21e79ecb9b3d3ef8d22612b104972e6b4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 3d020a82a8f6ba8d6ecd9765f59d7dcc27920a57fa0e98d6c27c49cfe89edfdd
[INFO] running `Command { std: "docker" "start" "-a" "3d020a82a8f6ba8d6ecd9765f59d7dcc27920a57fa0e98d6c27c49cfe89edfdd", kill_on_drop: false }`
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/fs/mod.rs:19:13
[INFO] [stderr]    |
[INFO] [stderr] 19 | type Func = Fn(&io::Result<fs::Metadata>, &TypeFlag, &Ftw) -> NftwResult;
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&io::Result<fs::Metadata>, &TypeFlag, &Ftw) -> NftwResult`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/system_ladder-fe6ba4f7a74abcba
[INFO] [stdout] 
[INFO] [stdout] running 22 tests
[INFO] [stdout] test list::item::tests::link_eq ... ok
[INFO] [stdout] test list::tests::iter_empty ... ok
[INFO] [stdout] test utils::tests::single_element ... ok
[INFO] [stdout] test tree::tests::sort_in_the_end ... ok
[INFO] [stdout] test tree::tests::one ... ok
[INFO] [stdout] test list::tests::push_front ... ok
[INFO] [stdout] test fs::tests::test_pathbuf ... 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] test list::item::tests::link_null_eq ... ok
[INFO] [stdout] test list::tests::create_first ... ok
[INFO] [stdout] test utils::tests::even_elements ... ok
[INFO] [stdout] test utils::tests::two_element ... ok
[INFO] [stdout] test list::tests::push_back ... ok
[INFO] [stdout] test utils::tests::odd_elements ... ok
[INFO] [stdout] test list::tests::iter_filled ... ok
[INFO] [stdout] test utils::tests::equal_elements_with_pivot_duplicate ... ok
[INFO] [stdout] test utils::tests::equal_elements ... ok
[INFO] [stdout] test utils::tests::two_sorted_elements ... ok
[INFO] [stdout] test list::tests::pop_back ... ok
[INFO] [stdout] test list::tests::pop_front ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 22 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "3d020a82a8f6ba8d6ecd9765f59d7dcc27920a57fa0e98d6c27c49cfe89edfdd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3d020a82a8f6ba8d6ecd9765f59d7dcc27920a57fa0e98d6c27c49cfe89edfdd", kill_on_drop: false }`
[INFO] [stdout] 3d020a82a8f6ba8d6ecd9765f59d7dcc27920a57fa0e98d6c27c49cfe89edfdd