[INFO] fetching crate spmc_ring 0.1.0...
[INFO] testing spmc_ring-0.1.0 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate spmc_ring 0.1.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate spmc_ring 0.1.0 on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate spmc_ring 0.1.0
[INFO] finished tweaking crates.io crate spmc_ring 0.1.0
[INFO] tweaked toml for crates.io crate spmc_ring 0.1.0 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", 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] 906976ad391047733d15df14a71a3f0c1dedf6695283fea08a1f9d45b1b6a1e7
[INFO] running `Command { std: "docker" "start" "-a" "906976ad391047733d15df14a71a3f0c1dedf6695283fea08a1f9d45b1b6a1e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "906976ad391047733d15df14a71a3f0c1dedf6695283fea08a1f9d45b1b6a1e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "906976ad391047733d15df14a71a3f0c1dedf6695283fea08a1f9d45b1b6a1e7", kill_on_drop: false }`
[INFO] [stdout] 906976ad391047733d15df14a71a3f0c1dedf6695283fea08a1f9d45b1b6a1e7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+beta-2021-01-01" "build" "--frozen" "--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] 0a6d7d99a9b6da7e7c7ba526d679dd49120385754dfffef2bfdcef16003ca985
[INFO] running `Command { std: "docker" "start" "-a" "0a6d7d99a9b6da7e7c7ba526d679dd49120385754dfffef2bfdcef16003ca985", kill_on_drop: false }`
[INFO] [stderr]    Compiling nb v0.1.3
[INFO] [stderr]    Compiling spmc_ring v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.85s
[INFO] running `Command { std: "docker" "inspect" "0a6d7d99a9b6da7e7c7ba526d679dd49120385754dfffef2bfdcef16003ca985", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0a6d7d99a9b6da7e7c7ba526d679dd49120385754dfffef2bfdcef16003ca985", kill_on_drop: false }`
[INFO] [stdout] 0a6d7d99a9b6da7e7c7ba526d679dd49120385754dfffef2bfdcef16003ca985
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+beta-2021-01-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 06e7a71e30c04ef2722c394d643590a6027dabdb41e6cb4fbe70a4f0b2016afe
[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" "06e7a71e30c04ef2722c394d643590a6027dabdb41e6cb4fbe70a4f0b2016afe", kill_on_drop: false }`
[INFO] [stderr]    Compiling spmc_ring v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.11s
[INFO] running `Command { std: "docker" "inspect" "06e7a71e30c04ef2722c394d643590a6027dabdb41e6cb4fbe70a4f0b2016afe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "06e7a71e30c04ef2722c394d643590a6027dabdb41e6cb4fbe70a4f0b2016afe", kill_on_drop: false }`
[INFO] [stdout] 06e7a71e30c04ef2722c394d643590a6027dabdb41e6cb4fbe70a4f0b2016afe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+beta-2021-01-01" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] e839fe0da281e2c837c5dab455e50f8689a3e417ba93c1dcc0c83fa66bbfd225
[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" "e839fe0da281e2c837c5dab455e50f8689a3e417ba93c1dcc0c83fa66bbfd225", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/spmc_ring-5056431d8aacf4a0
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test tests::alternating_write_read ... ok
[INFO] [stdout] test tests::buffer_overflow_write_read ... ok
[INFO] [stdout] test tests::generation_overflow_write_read ... ok
[INFO] [stdout] test tests::sequential_write_read ... ok
[INFO] [stderr]    Doc-tests spmc_ring
[INFO] [stdout] test tests::multithreaded_writer_readers ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.66s
[INFO] [stdout] 
[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" "e839fe0da281e2c837c5dab455e50f8689a3e417ba93c1dcc0c83fa66bbfd225", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e839fe0da281e2c837c5dab455e50f8689a3e417ba93c1dcc0c83fa66bbfd225", kill_on_drop: false }`
[INFO] [stdout] e839fe0da281e2c837c5dab455e50f8689a3e417ba93c1dcc0c83fa66bbfd225