[INFO] fetching crate bit_mask_ring_buf 0.5.2...
[INFO] testing bit_mask_ring_buf-0.5.2 against 1.55.0 for beta-1.56-1
[INFO] extracting crate bit_mask_ring_buf 0.5.2 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate bit_mask_ring_buf 0.5.2 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate bit_mask_ring_buf 0.5.2
[INFO] finished tweaking crates.io crate bit_mask_ring_buf 0.5.2
[INFO] tweaked toml for crates.io crate bit_mask_ring_buf 0.5.2 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 76fa01870d6ed46c8503c3b68438dd339f77ba7d514301d1ba33adc798409094
[INFO] running `Command { std: "docker" "start" "-a" "76fa01870d6ed46c8503c3b68438dd339f77ba7d514301d1ba33adc798409094", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "76fa01870d6ed46c8503c3b68438dd339f77ba7d514301d1ba33adc798409094", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "76fa01870d6ed46c8503c3b68438dd339f77ba7d514301d1ba33adc798409094", kill_on_drop: false }`
[INFO] [stdout] 76fa01870d6ed46c8503c3b68438dd339f77ba7d514301d1ba33adc798409094
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9bc1959543e228be3f4e74782f027faad97950d1b78492cbf59c053bb4952394
[INFO] running `Command { std: "docker" "start" "-a" "9bc1959543e228be3f4e74782f027faad97950d1b78492cbf59c053bb4952394", kill_on_drop: false }`
[INFO] [stderr]    Compiling bit_mask_ring_buf v0.5.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.61s
[INFO] running `Command { std: "docker" "inspect" "9bc1959543e228be3f4e74782f027faad97950d1b78492cbf59c053bb4952394", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9bc1959543e228be3f4e74782f027faad97950d1b78492cbf59c053bb4952394", kill_on_drop: false }`
[INFO] [stdout] 9bc1959543e228be3f4e74782f027faad97950d1b78492cbf59c053bb4952394
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 516b8cfe57edbe4f67a121197f449ad15d9acd1115e3602818d4e012c6af6731
[INFO] running `Command { std: "docker" "start" "-a" "516b8cfe57edbe4f67a121197f449ad15d9acd1115e3602818d4e012c6af6731", kill_on_drop: false }`
[INFO] [stderr]    Compiling bit_mask_ring_buf v0.5.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.20s
[INFO] running `Command { std: "docker" "inspect" "516b8cfe57edbe4f67a121197f449ad15d9acd1115e3602818d4e012c6af6731", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "516b8cfe57edbe4f67a121197f449ad15d9acd1115e3602818d4e012c6af6731", kill_on_drop: false }`
[INFO] [stdout] 516b8cfe57edbe4f67a121197f449ad15d9acd1115e3602818d4e012c6af6731
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 1bf6efc4a79ce3e365aadb97707c79787944f8d79b5fff62bb0400a976ba499a
[INFO] running `Command { std: "docker" "start" "-a" "1bf6efc4a79ce3e365aadb97707c79787944f8d79b5fff62bb0400a976ba499a", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/bit_mask_ring_buf-ddca24217f5d0d4a)
[INFO] [stdout] 
[INFO] [stdout] running 42 tests
[INFO] [stdout] test lin_interp::tests::bit_mask_ring_buf_f32_lin_interp_f32 ... ok
[INFO] [stdout] test lin_interp::tests::bit_mask_ring_buf_f32_lin_interp_f64 ... ok
[INFO] [stdout] test lin_interp::tests::bit_mask_ring_buf_f64_lin_interp_f32 ... ok
[INFO] [stdout] test lin_interp::tests::bit_mask_ring_buf_f64_lin_interp_f64 ... ok
[INFO] [stdout] test lin_interp::tests::bit_mask_ring_buf_ref_f32_lin_interp_f64 ... ok
[INFO] [stdout] test lin_interp::tests::bit_mask_ring_buf_ref_f32_lin_interp_f32 ... ok
[INFO] [stdout] test lin_interp::tests::bit_mask_ring_buf_ref_f64_lin_interp_f32 ... ok
[INFO] [stdout] test lin_interp::tests::bit_mask_ring_buf_ref_f64_lin_interp_f64 ... ok
[INFO] [stdout] test referenced::tests::bit_mask_ring_buf_ref_as_mut_slices ... ok
[INFO] [stdout] test referenced::tests::bit_mask_ring_buf_ref_as_mut_slices_latest ... ok
[INFO] [stdout] test referenced::tests::bit_mask_ring_buf_ref_as_mut_slices_len ... ok
[INFO] [stdout] test referenced::tests::bit_mask_ring_buf_ref_as_slices_latest ... ok
[INFO] [stdout] test referenced::tests::bit_mask_ring_buf_ref_as_slices ... ok
[INFO] [stdout] test referenced::tests::bit_mask_ring_buf_ref_as_slices_len ... ok
[INFO] [stdout] test referenced::tests::bit_mask_ring_buf_ref_clear ... ok
[INFO] [stdout] test referenced::tests::bit_mask_ring_buf_ref_index ... ok
[INFO] [stdout] test referenced::tests::bit_mask_ring_buf_ref_index_mut ... ok
[INFO] [stdout] test referenced::tests::bit_mask_ring_buf_ref_constrain ... ok
[INFO] [stdout] test referenced::tests::bit_mask_ring_buf_ref_initialize ... ok
[INFO] [stdout] test referenced::tests::bit_mask_ring_buf_ref_read_into ... ok
[INFO] [stdout] test referenced::tests::bit_mask_ring_buf_ref_write_latest ... ok
[INFO] [stdout] test referenced::tests::bit_mask_ring_buf_ref_write_latest_2 ... ok
[INFO] [stdout] test tests::bit_mask_ring_buf_as_mut_slices ... ok
[INFO] [stdout] test tests::bit_mask_ring_buf_as_slices ... ok
[INFO] [stdout] test tests::bit_mask_ring_buf_as_mut_slices_latest ... ok
[INFO] [stdout] test tests::bit_mask_ring_buf_as_mut_slices_len ... ok
[INFO] [stdout] test tests::bit_mask_ring_buf_as_slices_latest ... ok
[INFO] [stdout] test tests::bit_mask_ring_buf_as_slices_len ... ok
[INFO] [stdout] test tests::bit_mask_ring_buf_clear ... ok
[INFO] [stdout] test tests::bit_mask_ring_buf_clear_set_len ... ok
[INFO] [stdout] test tests::bit_mask_ring_buf_constrain ... ok
[INFO] [stdout] test tests::bit_mask_ring_buf_index ... ok
[INFO] [stdout] test tests::bit_mask_ring_buf_index_mut ... ok
[INFO] [stdout] test tests::bit_mask_ring_buf_initialize ... ok
[INFO] [stdout] test tests::bit_mask_ring_buf_initialize_uninit ... ok
[INFO] [stdout] test tests::bit_mask_ring_buf_read_into ... ok
[INFO] [stdout] test tests::bit_mask_ring_buf_set_len ... ok
[INFO] [stdout] test tests::bit_mask_ring_buf_set_len_uninit ... ok
[INFO] [stdout] test tests::bit_mask_ring_buf_write_latest ... ok
[INFO] [stdout] test tests::bit_mask_ring_buf_write_latest_2 ... ok
[INFO] [stdout] test tests::next_pow_of_2_test ... ok
[INFO] [stdout] test tests::next_pow_of_2_panic_test - should panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 42 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests bit_mask_ring_buf
[INFO] [stdout] 
[INFO] [stdout] running 57 tests
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name bit_mask_ring_buf --test /opt/rustwide/workdir/src/lib.rs -L dependency=/opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern bit_mask_ring_buf=/opt/rustwide/target/debug/deps/libbit_mask_ring_buf-4586f6ed671fd2a2.rlib -C embed-bitcode=no --error-format human` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "1bf6efc4a79ce3e365aadb97707c79787944f8d79b5fff62bb0400a976ba499a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1bf6efc4a79ce3e365aadb97707c79787944f8d79b5fff62bb0400a976ba499a", kill_on_drop: false }`
[INFO] [stdout] 1bf6efc4a79ce3e365aadb97707c79787944f8d79b5fff62bb0400a976ba499a