[INFO] fetching crate ringbuffer 0.4.0...
[INFO] testing ringbuffer-0.4.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate ringbuffer 0.4.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate ringbuffer 0.4.0 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ringbuffer 0.4.0
[INFO] finished tweaking crates.io crate ringbuffer 0.4.0
[INFO] tweaked toml for crates.io crate ringbuffer 0.4.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 41f367cf8e9c16bae74f9488153988693196d3dfa135d2522dcf7b837443d8e1
[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" "41f367cf8e9c16bae74f9488153988693196d3dfa135d2522dcf7b837443d8e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "41f367cf8e9c16bae74f9488153988693196d3dfa135d2522dcf7b837443d8e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "41f367cf8e9c16bae74f9488153988693196d3dfa135d2522dcf7b837443d8e1", kill_on_drop: false }`
[INFO] [stdout] 41f367cf8e9c16bae74f9488153988693196d3dfa135d2522dcf7b837443d8e1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c985edbe79510bd36d4915440e6d187958ff8c17c6e691b9049c28ff78408445
[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" "c985edbe79510bd36d4915440e6d187958ff8c17c6e691b9049c28ff78408445", kill_on_drop: false }`
[INFO] [stderr]    Compiling ringbuffer v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.96s
[INFO] running `Command { std: "docker" "inspect" "c985edbe79510bd36d4915440e6d187958ff8c17c6e691b9049c28ff78408445", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c985edbe79510bd36d4915440e6d187958ff8c17c6e691b9049c28ff78408445", kill_on_drop: false }`
[INFO] [stdout] c985edbe79510bd36d4915440e6d187958ff8c17c6e691b9049c28ff78408445
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", 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] 094d6325e19266a27af9a31db5baa9b123add94e072c1775d8396a74e2d3fa7f
[INFO] running `Command { std: "docker" "start" "-a" "094d6325e19266a27af9a31db5baa9b123add94e072c1775d8396a74e2d3fa7f", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.57
[INFO] [stderr]    Compiling cast v0.1.0
[INFO] [stderr]    Compiling term v0.4.6
[INFO] [stderr]    Compiling thread-scoped v1.0.2
[INFO] [stderr]    Compiling itertools v0.5.10
[INFO] [stderr]    Compiling num_cpus v0.2.13
[INFO] [stderr]    Compiling isatty v0.1.9
[INFO] [stderr]    Compiling num-traits v0.1.43
[INFO] [stderr]    Compiling criterion-stats v0.1.3
[INFO] [stderr]    Compiling simplelog v0.4.4
[INFO] [stderr]    Compiling criterion-plot v0.1.3
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling serde_derive v1.0.118
[INFO] [stderr]    Compiling failure v0.1.8
[INFO] [stderr]    Compiling criterion v0.1.2
[INFO] [stderr]    Compiling ringbuffer v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 33.96s
[INFO] running `Command { std: "docker" "inspect" "094d6325e19266a27af9a31db5baa9b123add94e072c1775d8396a74e2d3fa7f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "094d6325e19266a27af9a31db5baa9b123add94e072c1775d8396a74e2d3fa7f", kill_on_drop: false }`
[INFO] [stdout] 094d6325e19266a27af9a31db5baa9b123add94e072c1775d8396a74e2d3fa7f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 47ac7a27320cf0a1f1219fa07d0b44b309886d079b612c86ee21209a1a5b27ef
[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" "47ac7a27320cf0a1f1219fa07d0b44b309886d079b612c86ee21209a1a5b27ef", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.11s
[INFO] [stdout] running 55 tests
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/ringbuffer-0b7fcf9fedda4b60
[INFO] [stdout] test tests::run_test_back_none_mut ... ok
[INFO] [stdout] test tests::run_test_back_some ... ok
[INFO] [stdout] test tests::run_test_back_some_mut ... ok
[INFO] [stdout] test tests::run_test_contains ... ok
[INFO] [stdout] test tests::run_test_dequeue_ref ... ok
[INFO] [stdout] test tests::run_test_back_none ... ok
[INFO] [stdout] test tests::run_test_default ... ok
[INFO] [stdout] test tests::run_test_double_iter ... ok
[INFO] [stdout] test tests::run_test_empty ... ok
[INFO] [stdout] test tests::run_test_dequeue ... ok
[INFO] [stdout] test tests::run_test_clear ... ok
[INFO] [stdout] test tests::run_test_front_none ... ok
[INFO] [stdout] test tests::run_test_front_none_mut ... ok
[INFO] [stdout] test tests::run_test_get_relative_mut_zero_length ... ok
[INFO] [stdout] test tests::run_test_get_relative ... ok
[INFO] [stdout] test tests::run_test_get_relative_mut ... ok
[INFO] [stdout] test tests::run_test_front_some_mut ... ok
[INFO] [stdout] test tests::run_test_get_relative_negative ... ok
[INFO] [stdout] test tests::run_test_front_some ... ok
[INFO] [stdout] test tests::run_test_get_absolute ... ok
[INFO] [stdout] test tests::run_test_index_mut ... ok
[INFO] [stdout] test tests::run_test_is_full ... ok
[INFO] [stdout] test tests::run_test_index ... ok
[INFO] [stdout] test tests::run_test_get_relative_zero_length ... ok
[INFO] [stdout] test tests::run_test_iter ... ok
[INFO] [stdout] test tests::run_test_len_wrap ... ok
[INFO] [stdout] test tests::run_test_iter_mut ... ok
[INFO] [stdout] test tests::run_test_iter_mut_wrap ... ok
[INFO] [stdout] test tests::run_test_iter_wrap ... ok
[INFO] [stdout] test tests::run_test_len ... ok
[INFO] [stdout] test tests::run_test_peek_none ... ok
[INFO] [stdout] test tests::run_test_new ... ok
[INFO] [stdout] test tests::run_test_peek_some ... ok
[INFO] [stdout] test tests::run_test_wrapping_get_relative ... ok
[INFO] [stdout] test tests::run_test_skip ... ok
[INFO] [stdout] test tests::run_test_wrapping_get_relative_mut ... ok
[INFO] [stdout] test tests::run_test_to_vec ... ok
[INFO] [stdout] test tests::test_dropping::run_test_drops_contents_alloc ... ok
[INFO] [stdout] test tests::run_test_to_vec_wrap ... ok
[INFO] [stdout] test tests::run_test_push_pop_push ... ok
[INFO] [stdout] test tests::run_test_push_pop_push_full ... ok
[INFO] [stdout] test tests::run_test_push_pop_push_full_get ... ok
[INFO] [stdout] test tests::test_default_eq_new ... ok
[INFO] [stdout] test tests::run_test_from_iterator ... ok
[INFO] [stdout] test with_alloc::tests::test_with_capacity_power_of_two ... ok
[INFO] [stdout] test with_alloc::tests::test_default_capacity_constant ... ok
[INFO] [stdout] test tests::run_test_from_iterator_wrap ... ok
[INFO] [stdout] test with_alloc::tests::test_default ... ok
[INFO] [stdout] test tests::test_dropping::run_test_drops_contents_generic ... ok
[INFO] [stdout] test with_alloc::tests::test_index_zero_length ... ok
[INFO] [stdout] test with_alloc::tests::test_with_capacity_no_power_of_two ... ok
[INFO] [stdout] test with_generic_array::tests::test_with_capacity_no_power_of_two ... ok
[INFO] [stdout] test with_generic_array::tests::test_index_zero_length ... ok
[INFO] [stdout] test with_generic_array::tests::test_no_empty ... ok
[INFO] [stdout] test tests::run_test_push_pop_push_full_get_rep ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 55 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests ringbuffer
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test src/with_alloc.rs - with_alloc::AllocRingBuffer (line 15) ... ok
[INFO] [stdout] test src/with_generic_array.rs - with_generic_array::GenericRingBuffer (line 18) ... ok
[INFO] [stdout] test src/lib.rs - (line 30) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "47ac7a27320cf0a1f1219fa07d0b44b309886d079b612c86ee21209a1a5b27ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "47ac7a27320cf0a1f1219fa07d0b44b309886d079b612c86ee21209a1a5b27ef", kill_on_drop: false }`
[INFO] [stdout] 47ac7a27320cf0a1f1219fa07d0b44b309886d079b612c86ee21209a1a5b27ef