[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 try#ecabaf78506b7a4668d42dc20268c086b93f0fad for pr-87041
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftarsa%2Fdemixer" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tarsa/demixer on toolchain ecabaf78506b7a4668d42dc20268c086b93f0fad
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "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-1/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" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ae4a59a42ef3cd3451811d9b18df66ac4d918194ee10d9649de896cb43ca4b3e
[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" "ae4a59a42ef3cd3451811d9b18df66ac4d918194ee10d9649de896cb43ca4b3e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ae4a59a42ef3cd3451811d9b18df66ac4d918194ee10d9649de896cb43ca4b3e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae4a59a42ef3cd3451811d9b18df66ac4d918194ee10d9649de896cb43ca4b3e", kill_on_drop: false }`
[INFO] [stdout] ae4a59a42ef3cd3451811d9b18df66ac4d918194ee10d9649de896cb43ca4b3e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 037a7db2e7de52dbd6639b99a4bcda75cf12a04e13c42fa211ba283cca8faf4e
[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" "037a7db2e7de52dbd6639b99a4bcda75cf12a04e13c42fa211ba283cca8faf4e", 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 3.19s
[INFO] running `Command { std: "docker" "inspect" "037a7db2e7de52dbd6639b99a4bcda75cf12a04e13c42fa211ba283cca8faf4e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "037a7db2e7de52dbd6639b99a4bcda75cf12a04e13c42fa211ba283cca8faf4e", kill_on_drop: false }`
[INFO] [stdout] 037a7db2e7de52dbd6639b99a4bcda75cf12a04e13c42fa211ba283cca8faf4e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 96af1505c2d7696ce1362b7e4454d4a1ba10cb7e812b1f826da741deff251c43
[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" "96af1505c2d7696ce1362b7e4454d4a1ba10cb7e812b1f826da741deff251c43", kill_on_drop: false }`
[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] [stderr]    Compiling demixer v0.5.1 (/opt/rustwide/workdir)
[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 4.42s
[INFO] running `Command { std: "docker" "inspect" "96af1505c2d7696ce1362b7e4454d4a1ba10cb7e812b1f826da741deff251c43", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "96af1505c2d7696ce1362b7e4454d4a1ba10cb7e812b1f826da741deff251c43", kill_on_drop: false }`
[INFO] [stdout] 96af1505c2d7696ce1362b7e4454d4a1ba10cb7e812b1f826da741deff251c43
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "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] c8d26d89e797d80986e5b3cb43d89243b7ad9ff7b699fd5a24d0c2cc303c7fa5
[INFO] running `Command { std: "docker" "start" "-a" "c8d26d89e797d80986e5b3cb43d89243b7ad9ff7b699fd5a24d0c2cc303c7fa5", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: unused return value of `Vec::<T, A>::split_off` that must be used
[INFO] [stdout] running 0 tests
[INFO] [stderr]    --> src/history/tree.rs:253:9
[INFO] [stdout] 
[INFO] [stderr]     |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] 253 |         self.items.split_off(count);
[INFO] [stdout] 
[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 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/demixer-7033f2198d5405bc)
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/demixer-0dd1efb74253b1ca)
[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-a8f37514bc387972)
[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] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stderr]      Running tests/compare_history_sources_quick.rs (/opt/rustwide/target/debug/deps/compare_history_sources_quick-2186731c982522e0)
[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] [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 4.08s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/compare_sliding_window_trees.rs (/opt/rustwide/target/debug/deps/compare_sliding_window_trees-bbbb09a171990325)
[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] [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 124.30s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests demixer
[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" "c8d26d89e797d80986e5b3cb43d89243b7ad9ff7b699fd5a24d0c2cc303c7fa5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c8d26d89e797d80986e5b3cb43d89243b7ad9ff7b699fd5a24d0c2cc303c7fa5", kill_on_drop: false }`
[INFO] [stdout] c8d26d89e797d80986e5b3cb43d89243b7ad9ff7b699fd5a24d0c2cc303c7fa5