[INFO] fetching crate spmc_ring 0.1.0...
[INFO] testing spmc_ring-0.1.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate spmc_ring 0.1.0 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate spmc_ring 0.1.0 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 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-5/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-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] ada7256e1974e44155102fb5e2689e383b7fa63c49fee153ecf41bfcb31c76ed
[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" "ada7256e1974e44155102fb5e2689e383b7fa63c49fee153ecf41bfcb31c76ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ada7256e1974e44155102fb5e2689e383b7fa63c49fee153ecf41bfcb31c76ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ada7256e1974e44155102fb5e2689e383b7fa63c49fee153ecf41bfcb31c76ed", kill_on_drop: false }`
[INFO] [stdout] ada7256e1974e44155102fb5e2689e383b7fa63c49fee153ecf41bfcb31c76ed
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] cebc35e7790d128899387bc5914a57be97f66beac4fe78b9c9b80eb342087a90
[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" "cebc35e7790d128899387bc5914a57be97f66beac4fe78b9c9b80eb342087a90", 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 0.63s
[INFO] running `Command { std: "docker" "inspect" "cebc35e7790d128899387bc5914a57be97f66beac4fe78b9c9b80eb342087a90", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cebc35e7790d128899387bc5914a57be97f66beac4fe78b9c9b80eb342087a90", kill_on_drop: false }`
[INFO] [stdout] cebc35e7790d128899387bc5914a57be97f66beac4fe78b9c9b80eb342087a90
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] 9f0f8ebc47aa869a94c31b389ed6f5f89ed0ac592595f5b2ce489cf7c5aa8052
[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" "9f0f8ebc47aa869a94c31b389ed6f5f89ed0ac592595f5b2ce489cf7c5aa8052", kill_on_drop: false }`
[INFO] [stderr]    Compiling spmc_ring v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.30s
[INFO] running `Command { std: "docker" "inspect" "9f0f8ebc47aa869a94c31b389ed6f5f89ed0ac592595f5b2ce489cf7c5aa8052", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9f0f8ebc47aa869a94c31b389ed6f5f89ed0ac592595f5b2ce489cf7c5aa8052", kill_on_drop: false }`
[INFO] [stdout] 9f0f8ebc47aa869a94c31b389ed6f5f89ed0ac592595f5b2ce489cf7c5aa8052
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] a015364de3e786fef527c146849553a7d28c08765f85a06f9a16770bf2e7756f
[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" "a015364de3e786fef527c146849553a7d28c08765f85a06f9a16770bf2e7756f", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stdout] running 5 tests
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/spmc_ring-1bdb0678091f0cdf)
[INFO] [stdout] test tests::alternating_write_read ... ok
[INFO] [stdout] test tests::generation_overflow_write_read ... ok
[INFO] [stdout] test tests::sequential_write_read ... ok
[INFO] [stdout] test tests::buffer_overflow_write_read ... ok
[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 0.38s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests spmc_ring
[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" "a015364de3e786fef527c146849553a7d28c08765f85a06f9a16770bf2e7756f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a015364de3e786fef527c146849553a7d28c08765f85a06f9a16770bf2e7756f", kill_on_drop: false }`
[INFO] [stdout] a015364de3e786fef527c146849553a7d28c08765f85a06f9a16770bf2e7756f