[INFO] fetching crate bytes-ringbuffer 0.1.0...
[INFO] testing bytes-ringbuffer-0.1.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate bytes-ringbuffer 0.1.0 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate bytes-ringbuffer 0.1.0 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 bytes-ringbuffer 0.1.0
[INFO] finished tweaking crates.io crate bytes-ringbuffer 0.1.0
[INFO] tweaked toml for crates.io crate bytes-ringbuffer 0.1.0 written to /workspace/builds/worker-3/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-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 290c41b25f802de9fbf0944c7453de98bdd0dc93411892d3f42cab298657a871
[INFO] running `Command { std: "docker" "start" "-a" "290c41b25f802de9fbf0944c7453de98bdd0dc93411892d3f42cab298657a871", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "290c41b25f802de9fbf0944c7453de98bdd0dc93411892d3f42cab298657a871", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "290c41b25f802de9fbf0944c7453de98bdd0dc93411892d3f42cab298657a871", kill_on_drop: false }`
[INFO] [stdout] 290c41b25f802de9fbf0944c7453de98bdd0dc93411892d3f42cab298657a871
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] 8f53296932bea828bbf5de9da18e85cda151b14ddfbe84490969d3257112dd79
[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" "8f53296932bea828bbf5de9da18e85cda151b14ddfbe84490969d3257112dd79", kill_on_drop: false }`
[INFO] [stderr]    Compiling bytes-ringbuffer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.69s
[INFO] running `Command { std: "docker" "inspect" "8f53296932bea828bbf5de9da18e85cda151b14ddfbe84490969d3257112dd79", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f53296932bea828bbf5de9da18e85cda151b14ddfbe84490969d3257112dd79", kill_on_drop: false }`
[INFO] [stdout] 8f53296932bea828bbf5de9da18e85cda151b14ddfbe84490969d3257112dd79
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] [stdout] 5b60094d8c5e7ab056f80155601d862c7b5f8a36927e0ede0bf3c68287fa45b9
[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" "5b60094d8c5e7ab056f80155601d862c7b5f8a36927e0ede0bf3c68287fa45b9", kill_on_drop: false }`
[INFO] [stderr]    Compiling bytes-ringbuffer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.85s
[INFO] running `Command { std: "docker" "inspect" "5b60094d8c5e7ab056f80155601d862c7b5f8a36927e0ede0bf3c68287fa45b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b60094d8c5e7ab056f80155601d862c7b5f8a36927e0ede0bf3c68287fa45b9", kill_on_drop: false }`
[INFO] [stdout] 5b60094d8c5e7ab056f80155601d862c7b5f8a36927e0ede0bf3c68287fa45b9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 3122d6e75c68ec5e83ec5202b4de38880f54a1883f5baaba507a7752e8bada8d
[INFO] running `Command { std: "docker" "start" "-a" "3122d6e75c68ec5e83ec5202b4de38880f54a1883f5baaba507a7752e8bada8d", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/bytes_ringbuffer-bf20966d6c860da2
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test tests::ringbuffer_init ... ok
[INFO] [stdout] test tests::ringbuffer_read_write ... ok
[INFO] [stdout] test tests::ringbuffer_write_over_capacity ... ok
[INFO] [stdout] test tests::ringbuffer_read_over_remaining ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests bytes-ringbuffer
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - (line 4) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "3122d6e75c68ec5e83ec5202b4de38880f54a1883f5baaba507a7752e8bada8d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3122d6e75c68ec5e83ec5202b4de38880f54a1883f5baaba507a7752e8bada8d", kill_on_drop: false }`
[INFO] [stdout] 3122d6e75c68ec5e83ec5202b4de38880f54a1883f5baaba507a7752e8bada8d