[INFO] crate ringtail 0.3.0 is already in cache
[INFO] testing ringtail-0.3.0 against master#28742a1146f10a4f09369baad027a464acb7a766 for pr-71274
[INFO] extracting crate ringtail 0.3.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate ringtail 0.3.0 on toolchain 28742a1146f10a4f09369baad027a464acb7a766
[INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate ringtail 0.3.0
[INFO] finished tweaking crates.io crate ringtail 0.3.0
[INFO] tweaked toml for crates.io crate ringtail 0.3.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 05967eee64e0b6de5ee1901ca52beed0c98cbfbf8e7a3d96ca9b4c0fa6aaaee0
[INFO] running `"docker" "start" "-a" "05967eee64e0b6de5ee1901ca52beed0c98cbfbf8e7a3d96ca9b4c0fa6aaaee0"`
[INFO] [stderr]    Compiling ringtail v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.93s
[INFO] running `"docker" "inspect" "05967eee64e0b6de5ee1901ca52beed0c98cbfbf8e7a3d96ca9b4c0fa6aaaee0"`
[INFO] running `"docker" "rm" "-f" "05967eee64e0b6de5ee1901ca52beed0c98cbfbf8e7a3d96ca9b4c0fa6aaaee0"`
[INFO] [stdout] 05967eee64e0b6de5ee1901ca52beed0c98cbfbf8e7a3d96ca9b4c0fa6aaaee0
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] f8507c95b4b1eb7e9579e4a96d3b145145fb6e79654721c783bec68861f2a9d8
[INFO] running `"docker" "start" "-a" "f8507c95b4b1eb7e9579e4a96d3b145145fb6e79654721c783bec68861f2a9d8"`
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling regex-automata v0.1.9
[INFO] [stderr]    Compiling rand_xoshiro v0.1.0
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling bstr v0.2.12
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling crossbeam-queue v0.2.1
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling crossbeam-deque v0.7.3
[INFO] [stderr]    Compiling cast v0.2.3
[INFO] [stderr]    Compiling csv v1.1.3
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling rayon-core v1.7.0
[INFO] [stderr]    Compiling criterion-plot v0.3.1
[INFO] [stderr]    Compiling rayon v1.3.0
[INFO] [stderr]    Compiling serde_derive v1.0.106
[INFO] [stderr]    Compiling criterion v0.2.11
[INFO] [stderr]    Compiling ringtail v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1m 08s
[INFO] running `"docker" "inspect" "f8507c95b4b1eb7e9579e4a96d3b145145fb6e79654721c783bec68861f2a9d8"`
[INFO] running `"docker" "rm" "-f" "f8507c95b4b1eb7e9579e4a96d3b145145fb6e79654721c783bec68861f2a9d8"`
[INFO] [stdout] f8507c95b4b1eb7e9579e4a96d3b145145fb6e79654721c783bec68861f2a9d8
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "test" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 353cc738df95cae23d9ab2fb692a8173ca514979e72067e06faef284b2384413
[INFO] running `"docker" "start" "-a" "353cc738df95cae23d9ab2fb692a8173ca514979e72067e06faef284b2384413"`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.31s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/ringtail-2e685e326a8de607
[INFO] [stdout] 
[INFO] [stdout] running 24 tests
[INFO] [stdout] test buffers::atomic::tests::test_push ... ok
[INFO] [stdout] test buffers::atomic::tests::test_pull_more_than_buffer ... ok
[INFO] [stdout] test buffers::unbounded::tests::test_capacity ... ok
[INFO] [stdout] test buffers::atomic::tests::test_push_more_than_buffer ... ok
[INFO] [stdout] test buffers::unbounded::tests::test_pull_more_than_buffer ... ok
[INFO] [stdout] test buffers::atomic::tests::test_capacity ... ok
[INFO] [stdout] test buffers::unbounded::tests::test_pull_less_than_buffer ... ok
[INFO] [stdout] test buffers::unbounded::tests::test_push ... ok
[INFO] [stdout] test buffers::atomic::tests::test_push_and_consume ... ok
[INFO] [stdout] test buffers::unbounded::tests::test_force_resize ... ok
[INFO] [stdout] test buffers::atomic::tests::test_pull_less_than_buffer ... ok
[INFO] [stdout] test buffers::atomic::tests::test_push_capacity ... ok
[INFO] [stdout] test internal::arrays::tests::copy_from_seq_with_more_elements ... ok
[INFO] [stdout] test internal::arrays::tests::copy_from_seq_with_less_elements ... ok
[INFO] [stdout] test internal::arrays::tests::copy_to_seq_with_less_elements ... ok
[INFO] [stdout] test internal::arrays::tests::copy_to_seq_with_more_elements ... ok
[INFO] [stdout] test buffers::unbounded::tests::test_push_and_consume ... ok
[INFO] [stdout] test io::tests::read_from_closed_pipe_returns_zero ... ok
[INFO] [stdout] test io::tests::read_write ... ok
[INFO] [stdout] test io::tests::write_nonblocking ... ok
[INFO] [stdout] test io::tests::read_nonblocking ... ok
[INFO] [stdout] test io::tests::write_to_closed_pipe_returns_broken_pipe ... ok
[INFO] [stdout] test buffers::unbounded::tests::test_push_a_lot ... ok
[INFO] [stdout] test io::tests::read_empty_blocking ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 24 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests ringtail
[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
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "353cc738df95cae23d9ab2fb692a8173ca514979e72067e06faef284b2384413"`
[INFO] running `"docker" "rm" "-f" "353cc738df95cae23d9ab2fb692a8173ca514979e72067e06faef284b2384413"`
[INFO] [stdout] 353cc738df95cae23d9ab2fb692a8173ca514979e72067e06faef284b2384413