[INFO] fetching crate ringbuf 0.2.6...
[INFO] testing ringbuf-0.2.6 against 1.55.0 for beta-1.56-1
[INFO] extracting crate ringbuf 0.2.6 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate ringbuf 0.2.6 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 ringbuf 0.2.6
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate ringbuf 0.2.6
[INFO] tweaked toml for crates.io crate ringbuf 0.2.6 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate crates.io crate ringbuf 0.2.6 already has a lockfile, it will not be regenerated
[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-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] 10a6c34f558a14e532fe71078d51d5e0a80158d2dc9a8f089f6ffc55d57bca76
[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" "10a6c34f558a14e532fe71078d51d5e0a80158d2dc9a8f089f6ffc55d57bca76", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "10a6c34f558a14e532fe71078d51d5e0a80158d2dc9a8f089f6ffc55d57bca76", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "10a6c34f558a14e532fe71078d51d5e0a80158d2dc9a8f089f6ffc55d57bca76", kill_on_drop: false }`
[INFO] [stdout] 10a6c34f558a14e532fe71078d51d5e0a80158d2dc9a8f089f6ffc55d57bca76
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] 7e6033d8f0cf34d3455a74f048be30110f67c6264ab259f9370202afe9b4fafe
[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" "7e6033d8f0cf34d3455a74f048be30110f67c6264ab259f9370202afe9b4fafe", kill_on_drop: false }`
[INFO] [stderr]    Compiling ringbuf v0.2.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.46s
[INFO] running `Command { std: "docker" "inspect" "7e6033d8f0cf34d3455a74f048be30110f67c6264ab259f9370202afe9b4fafe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7e6033d8f0cf34d3455a74f048be30110f67c6264ab259f9370202afe9b4fafe", kill_on_drop: false }`
[INFO] [stdout] 7e6033d8f0cf34d3455a74f048be30110f67c6264ab259f9370202afe9b4fafe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] c7ca897f52275a0fa469443658ea8d6282276b5f9388b9496f5bbc5546d6a167
[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" "c7ca897f52275a0fa469443658ea8d6282276b5f9388b9496f5bbc5546d6a167", kill_on_drop: false }`
[INFO] [stderr]    Compiling ringbuf v0.2.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 5.01s
[INFO] running `Command { std: "docker" "inspect" "c7ca897f52275a0fa469443658ea8d6282276b5f9388b9496f5bbc5546d6a167", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c7ca897f52275a0fa469443658ea8d6282276b5f9388b9496f5bbc5546d6a167", kill_on_drop: false }`
[INFO] [stdout] c7ca897f52275a0fa469443658ea8d6282276b5f9388b9496f5bbc5546d6a167
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] 4057f057033ff022099ab1820ad8a631ba5d66718daa5f41a1f8067b8078a169
[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" "4057f057033ff022099ab1820ad8a631ba5d66718daa5f41a1f8067b8078a169", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/ringbuf-2a3600d7fd195887)
[INFO] [stdout] running 36 tests
[INFO] [stdout] test tests::access::pop_empty ... ok
[INFO] [stdout] test tests::access::pop_full ... ok
[INFO] [stdout] test tests::access::pop_return ... ok
[INFO] [stdout] test tests::drop::pop_each_test1 ... ok
[INFO] [stdout] test tests::drop::multiple_each ... ok
[INFO] [stdout] test tests::drop::pop_each_test2 ... ok
[INFO] [stdout] test tests::drop::push_each_test1 ... ok
[INFO] [stdout] test tests::drop::single ... ok
[INFO] [stdout] test tests::drop::push_each_test2 ... ok
[INFO] [stdout] test tests::multiple::for_each ... ok
[INFO] [stdout] test tests::multiple::for_each_mut ... ok
[INFO] [stdout] test tests::access::discard ... ok
[INFO] [stdout] test tests::access::discard_drop ... ok
[INFO] [stdout] test tests::access::push_pop ... ok
[INFO] [stdout] test tests::access::push_return ... ok
[INFO] [stdout] test tests::access::pop ... ok
[INFO] [stdout] test tests::single::len_remaining ... ok
[INFO] [stdout] test tests::single::capacity ... ok
[INFO] [stdout] test tests::read_write::into ... ok
[INFO] [stdout] test tests::multiple::move_slice_count ... ok
[INFO] [stdout] test tests::single::pop_empty ... ok
[INFO] [stdout] test tests::multiple::pop_each ... ok
[INFO] [stdout] test tests::read_write::from ... ok
[INFO] [stdout] test tests::multiple::push_pop_slice ... ok
[INFO] [stdout] test tests::read_write::count ... ok
[INFO] [stdout] test tests::access::push ... ok
[INFO] [stdout] test tests::multiple::move_slice ... ok
[INFO] [stdout] test tests::single::split_capacity ... ok
[INFO] [stdout] test tests::single::push_pop_one ... ok
[INFO] [stdout] test tests::single::push_pop_all ... ok
[INFO] [stdout] test tests::single::push ... ok
[INFO] [stdout] test tests::single::split_threads ... ok
[INFO] [stdout] test tests::single::empty_full ... ok
[INFO] [stdout] test tests::message::read_from_write_into ... ok
[INFO] [stdout] test tests::message::push_pop_slice ... ok
[INFO] [stderr]    Doc-tests ringbuf
[INFO] [stdout] test tests::message::read_write ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 36 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.66s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - (line 24) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.76s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "4057f057033ff022099ab1820ad8a631ba5d66718daa5f41a1f8067b8078a169", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4057f057033ff022099ab1820ad8a631ba5d66718daa5f41a1f8067b8078a169", kill_on_drop: false }`
[INFO] [stdout] 4057f057033ff022099ab1820ad8a631ba5d66718daa5f41a1f8067b8078a169