[INFO] cloning repository https://github.com/tarsa/demixer
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tarsa/demixer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftarsa%2Fdemixer", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftarsa%2Fdemixer'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 478967c7dee10e53375739bbb4de19406dbb4519
[INFO] testing tarsa/demixer against master#99e3aef02079e9c10583638520cd0c134dc3a01d for pr-85530
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftarsa%2Fdemixer" "/workspace/builds/worker-10/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tarsa/demixer on toolchain 99e3aef02079e9c10583638520cd0c134dc3a01d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tarsa/demixer
[INFO] finished tweaking git repo https://github.com/tarsa/demixer
[INFO] tweaked toml for git repo https://github.com/tarsa/demixer written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/tarsa/demixer already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 27be1b870753468ef75391e58bcb3bd2b0f62db6b8dc5ac5fd376f602da09cf2
[INFO] running `Command { std: "docker" "start" "-a" "27be1b870753468ef75391e58bcb3bd2b0f62db6b8dc5ac5fd376f602da09cf2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "27be1b870753468ef75391e58bcb3bd2b0f62db6b8dc5ac5fd376f602da09cf2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "27be1b870753468ef75391e58bcb3bd2b0f62db6b8dc5ac5fd376f602da09cf2", kill_on_drop: false }`
[INFO] [stdout] 27be1b870753468ef75391e58bcb3bd2b0f62db6b8dc5ac5fd376f602da09cf2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c67c2065fb68486aa4f71dc8738c1dfa9056ef52cf831d0c0fc51b48a5fc24f4
[INFO] running `Command { std: "docker" "start" "-a" "c67c2065fb68486aa4f71dc8738c1dfa9056ef52cf831d0c0fc51b48a5fc24f4", kill_on_drop: false }`
[INFO] [stderr]    Compiling demixer v0.5.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `Vec::<T, A>::split_off` that must be used
[INFO] [stdout]    --> src/history/tree.rs:253:9
[INFO] [stdout]     |
[INFO] [stdout] 253 |         self.items.split_off(count);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: use `.truncate()` if you don't need the other half
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.10s
[INFO] running `Command { std: "docker" "inspect" "c67c2065fb68486aa4f71dc8738c1dfa9056ef52cf831d0c0fc51b48a5fc24f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c67c2065fb68486aa4f71dc8738c1dfa9056ef52cf831d0c0fc51b48a5fc24f4", kill_on_drop: false }`
[INFO] [stdout] c67c2065fb68486aa4f71dc8738c1dfa9056ef52cf831d0c0fc51b48a5fc24f4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 11616518d30518c35be9b691a4a811919d77c22b30343068fbed7d0d264c29ea
[INFO] running `Command { std: "docker" "start" "-a" "11616518d30518c35be9b691a4a811919d77c22b30343068fbed7d0d264c29ea", kill_on_drop: false }`
[INFO] [stderr]    Compiling demixer v0.5.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `Vec::<T, A>::split_off` that must be used
[INFO] [stdout]    --> src/history/tree.rs:253:9
[INFO] [stdout]     |
[INFO] [stdout] 253 |         self.items.split_off(count);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: use `.truncate()` if you don't need the other half
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Vec::<T, A>::split_off` that must be used
[INFO] [stdout]    --> src/history/tree.rs:253:9
[INFO] [stdout]     |
[INFO] [stdout] 253 |         self.items.split_off(count);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: use `.truncate()` if you don't need the other half
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.28s
[INFO] running `Command { std: "docker" "inspect" "11616518d30518c35be9b691a4a811919d77c22b30343068fbed7d0d264c29ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "11616518d30518c35be9b691a4a811919d77c22b30343068fbed7d0d264c29ea", kill_on_drop: false }`
[INFO] [stdout] 11616518d30518c35be9b691a4a811919d77c22b30343068fbed7d0d264c29ea
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 180ca0aa36dc38232e3c3818feb997018f9975560164963f13f43222556b107e
[INFO] running `Command { std: "docker" "start" "-a" "180ca0aa36dc38232e3c3818feb997018f9975560164963f13f43222556b107e", kill_on_drop: false }`
[INFO] [stderr] warning: unused return value of `Vec::<T, A>::split_off` that must be used
[INFO] [stderr]    --> src/history/tree.rs:253:9
[INFO] [stderr]     |
[INFO] [stderr] 253 |         self.items.split_off(count);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: use `.truncate()` if you don't need the other half
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `Vec::<T, A>::split_off` that must be used
[INFO] [stderr]    --> src/history/tree.rs:253:9
[INFO] [stderr]     |
[INFO] [stderr] 253 |         self.items.split_off(count);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: use `.truncate()` if you don't need the other half
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/demixer-00fa67543b7e3b51)
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/demixer-8197fa93fb815e1f)
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/compare_history_sources_long.rs (/opt/rustwide/target/debug/deps/compare_history_sources_long-53fad10aa57e7ec7)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test long_tests_skipped ... ignored
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 1 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/compare_history_sources_quick.rs (/opt/rustwide/target/debug/deps/compare_history_sources_quick-31213125b3ff8bbd)
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test compare_for_repeated_byte_input ... ok
[INFO] [stdout] test compare_for_one_byte_input ... ok
[INFO] [stdout] test compare_for_multi_symbol_sequences ... ok
[INFO] [stdout] test compare_for_two_symbols_sequences ... ok
[INFO] [stdout] test compare_for_repeated_byte_borders ... ok
[INFO] [stderr]      Running tests/compare_sliding_window_trees.rs (/opt/rustwide/target/debug/deps/compare_sliding_window_trees-c0db0563966bd804)
[INFO] [stdout] test compare_for_repeated_pattern_borders ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 3.42s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test compare_for_repeated_byte_input ... ok
[INFO] [stdout] test compare_for_multi_symbol_sequences ... ok
[INFO] [stdout] test compare_for_two_symbols_fibonacci_word ... ok
[INFO] [stdout] test compare_for_two_symbols_interrupted_runs ... ok
[INFO] [stdout] test compare_for_repeated_byte_borders ... ok
[INFO] [stdout] test compare_for_repeated_pattern_borders has been running for over 60 seconds
[INFO] [stderr]    Doc-tests demixer
[INFO] [stdout] test compare_for_repeated_pattern_borders ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 128.83s
[INFO] [stdout] 
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "180ca0aa36dc38232e3c3818feb997018f9975560164963f13f43222556b107e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "180ca0aa36dc38232e3c3818feb997018f9975560164963f13f43222556b107e", kill_on_drop: false }`
[INFO] [stdout] 180ca0aa36dc38232e3c3818feb997018f9975560164963f13f43222556b107e