[INFO] cloning repository https://github.com/stallmanifold/ring-buffer
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/stallmanifold/ring-buffer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstallmanifold%2Fring-buffer", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstallmanifold%2Fring-buffer'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 425e612aeea37aeb020ccf3c03d9a66765e92ede
[INFO] testing stallmanifold/ring-buffer against 1.59.0 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstallmanifold%2Fring-buffer" "/workspace/builds/worker-19/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-19/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/stallmanifold/ring-buffer on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/stallmanifold/ring-buffer
[INFO] finished tweaking git repo https://github.com/stallmanifold/ring-buffer
[INFO] tweaked toml for git repo https://github.com/stallmanifold/ring-buffer written to /workspace/builds/worker-19/source/Cargo.toml
[INFO] crate git repo https://github.com/stallmanifold/ring-buffer already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b83b4cd8ad39256589645908bd32f13b7246f2a820f1bda8a2bce0b4666567df
[INFO] running `Command { std: "docker" "start" "-a" "b83b4cd8ad39256589645908bd32f13b7246f2a820f1bda8a2bce0b4666567df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b83b4cd8ad39256589645908bd32f13b7246f2a820f1bda8a2bce0b4666567df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b83b4cd8ad39256589645908bd32f13b7246f2a820f1bda8a2bce0b4666567df", kill_on_drop: false }`
[INFO] [stdout] b83b4cd8ad39256589645908bd32f13b7246f2a820f1bda8a2bce0b4666567df
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ead0c512d7671bf5d17e93029cec0875c6a5f0e4c3a808a0f91b94153a375277
[INFO] running `Command { std: "docker" "start" "-a" "ead0c512d7671bf5d17e93029cec0875c6a5f0e4c3a808a0f91b94153a375277", kill_on_drop: false }`
[INFO] [stderr]    Compiling ring-buffer v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.56s
[INFO] running `Command { std: "docker" "inspect" "ead0c512d7671bf5d17e93029cec0875c6a5f0e4c3a808a0f91b94153a375277", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ead0c512d7671bf5d17e93029cec0875c6a5f0e4c3a808a0f91b94153a375277", kill_on_drop: false }`
[INFO] [stdout] ead0c512d7671bf5d17e93029cec0875c6a5f0e4c3a808a0f91b94153a375277
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b085b97159d6c9bcdfbc4b39ff9c11017b2401d109c5fe53be622182ee14e3ee
[INFO] running `Command { std: "docker" "start" "-a" "b085b97159d6c9bcdfbc4b39ff9c11017b2401d109c5fe53be622182ee14e3ee", kill_on_drop: false }`
[INFO] [stderr]    Compiling ring-buffer v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.32s
[INFO] running `Command { std: "docker" "inspect" "b085b97159d6c9bcdfbc4b39ff9c11017b2401d109c5fe53be622182ee14e3ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b085b97159d6c9bcdfbc4b39ff9c11017b2401d109c5fe53be622182ee14e3ee", kill_on_drop: false }`
[INFO] [stdout] b085b97159d6c9bcdfbc4b39ff9c11017b2401d109c5fe53be622182ee14e3ee
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 2f6b0dab31d80277b451077471519c20bc94ea742fc83d6bf9a2d4325ad70db1
[INFO] running `Command { std: "docker" "start" "-a" "2f6b0dab31d80277b451077471519c20bc94ea742fc83d6bf9a2d4325ad70db1", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/ring_buffer-8193dfb7f6f60421)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test rotate_tests::ring_buffer_rotate_should_unwrap_end ... ok
[INFO] [stdout] test rotate_tests::ring_buffer_rotate_should_unwrap_buffer ... ok
[INFO] [stdout] test rotate_tests::ring_buffer_successive_rotate_operations_should_leave_internal_state_unchanged ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/ring_buffer.rs (/opt/rustwide/target/debug/deps/ring_buffer-81fa6eeb4b01b1c4)
[INFO] [stdout] 
[INFO] [stdout] running 16 tests
[INFO] [stdout] test empty_ring_buffer_extract_should_be_empty_slice ... ok
[INFO] [stdout] test empty_ring_buffer_should_be_empty ... ok
[INFO] [stdout] test empty_ring_buffer_should_have_length_zero ... ok
[INFO] [stdout] test empty_ring_buffer_should_have_maximum_space_remaining ... ok
[INFO] [stdout] test filled_ring_buffer_should_have_no_space_remaining ... ok
[INFO] [stdout] test ring_buffer_containing_data_should_have_length_no_larger_than_capacity ... ok
[INFO] [stdout] test ring_buffer_containing_data_should_not_be_empty ... ok
[INFO] [stdout] test ring_buffer_extract_after_clear_should_be_empty_string ... ok
[INFO] [stdout] test ring_buffer_extract_after_extract_should_yield_same_string ... ok
[INFO] [stdout] test ring_buffer_extracted_string_should_match_inserted_string_of_length_at_most_the_buffer_size ... ok
[INFO] [stdout] test ring_buffer_should_be_empty_after_clear ... ok
[INFO] [stdout] test ring_buffer_should_correctly_extract_data_after_multiple_cycles ... ok
[INFO] [stdout] test ring_buffer_should_have_capacity_equal_to_underlying_storage_size ... ok
[INFO] [stdout] test ring_buffer_should_only_contain_the_last_buffer_length_number_of_bytes_put_into_it ... ok
[INFO] [stdout] test ring_buffer_string_longer_than_buffer_length_should_wrap_around ... ok
[INFO] [stdout] test ring_buffer_with_string_equal_to_length_in_bytes_should_be_full ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 16 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests ring-buffer
[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" "2f6b0dab31d80277b451077471519c20bc94ea742fc83d6bf9a2d4325ad70db1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2f6b0dab31d80277b451077471519c20bc94ea742fc83d6bf9a2d4325ad70db1", kill_on_drop: false }`
[INFO] [stdout] 2f6b0dab31d80277b451077471519c20bc94ea742fc83d6bf9a2d4325ad70db1