[INFO] fetching crate rbuf 0.1.3...
[INFO] testing rbuf-0.1.3 against 1.59.0 for beta-1.60-1
[INFO] extracting crate rbuf 0.1.3 into /workspace/builds/worker-48/source
[INFO] validating manifest of crates.io crate rbuf 0.1.3 on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rbuf 0.1.3
[INFO] finished tweaking crates.io crate rbuf 0.1.3
[INFO] tweaked toml for crates.io crate rbuf 0.1.3 written to /workspace/builds/worker-48/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-48/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-48/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0623538de7265f0356873a691b0777e981123655c90b90e2b22efb56e64ccd99
[INFO] running `Command { std: "docker" "start" "-a" "0623538de7265f0356873a691b0777e981123655c90b90e2b22efb56e64ccd99", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0623538de7265f0356873a691b0777e981123655c90b90e2b22efb56e64ccd99", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0623538de7265f0356873a691b0777e981123655c90b90e2b22efb56e64ccd99", kill_on_drop: false }`
[INFO] [stdout] 0623538de7265f0356873a691b0777e981123655c90b90e2b22efb56e64ccd99
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-48/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-48/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6c076a313a8a8a8129d06ce345aa8466ec2758d11b6f8fca94fcd43ab74e0fbb
[INFO] running `Command { std: "docker" "start" "-a" "6c076a313a8a8a8129d06ce345aa8466ec2758d11b6f8fca94fcd43ab74e0fbb", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling rbuf v0.1.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.54s
[INFO] running `Command { std: "docker" "inspect" "6c076a313a8a8a8129d06ce345aa8466ec2758d11b6f8fca94fcd43ab74e0fbb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6c076a313a8a8a8129d06ce345aa8466ec2758d11b6f8fca94fcd43ab74e0fbb", kill_on_drop: false }`
[INFO] [stdout] 6c076a313a8a8a8129d06ce345aa8466ec2758d11b6f8fca94fcd43ab74e0fbb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-48/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-48/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0442cc4872b3273c70aa3c2c9287c7c8639c8fd06b991ec144818344d75999bc
[INFO] running `Command { std: "docker" "start" "-a" "0442cc4872b3273c70aa3c2c9287c7c8639c8fd06b991ec144818344d75999bc", kill_on_drop: false }`
[INFO] [stderr]    Compiling rbuf v0.1.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.10s
[INFO] running `Command { std: "docker" "inspect" "0442cc4872b3273c70aa3c2c9287c7c8639c8fd06b991ec144818344d75999bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0442cc4872b3273c70aa3c2c9287c7c8639c8fd06b991ec144818344d75999bc", kill_on_drop: false }`
[INFO] [stdout] 0442cc4872b3273c70aa3c2c9287c7c8639c8fd06b991ec144818344d75999bc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-48/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-48/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 3741d5cae9cfa61446a03231e150b3d3e10572eb26f104741ebfc10864bcb5a2
[INFO] running `Command { std: "docker" "start" "-a" "3741d5cae9cfa61446a03231e150b3d3e10572eb26f104741ebfc10864bcb5a2", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rbuf-d5d5d3a997c35834)
[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] [stderr]      Running tests/test.rs (/opt/rustwide/target/debug/deps/test-306228b6ac2f0237)
[INFO] [stdout] 
[INFO] [stdout] running 11 tests
[INFO] [stdout] test boxed_slice ... ok
[INFO] [stdout] test buf_index ... ok
[INFO] [stdout] test front_back ... ok
[INFO] [stdout] test front_back_mut ... ok
[INFO] [stdout] test iter_next ... ok
[INFO] [stdout] test iter_size_hint ... ok
[INFO] [stdout] test double_ended_iter ... ok
[INFO] [stdout] test mutating_iter ... ok
[INFO] [stdout] test ring_buf_macro ... ok
[INFO] [stdout] test buf_len ... ok
[INFO] [stdout] test no_mutable_iterator_with_zst - should panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 11 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.06s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests rbuf
[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" "3741d5cae9cfa61446a03231e150b3d3e10572eb26f104741ebfc10864bcb5a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3741d5cae9cfa61446a03231e150b3d3e10572eb26f104741ebfc10864bcb5a2", kill_on_drop: false }`
[INFO] [stdout] 3741d5cae9cfa61446a03231e150b3d3e10572eb26f104741ebfc10864bcb5a2