[INFO] fetching crate nbd-async 0.5.0...
[INFO] testing nbd-async-0.5.0 against beta-2022-02-22 for beta-1.60-1
[INFO] extracting crate nbd-async 0.5.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate nbd-async 0.5.0 on toolchain beta-2022-02-22
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate nbd-async 0.5.0
[INFO] finished tweaking crates.io crate nbd-async 0.5.0
[INFO] tweaked toml for crates.io crate nbd-async 0.5.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate nbd-async 0.5.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded nix v0.22.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ea94208a1dda886dd6e8a1149f424e2b762e90b309b90fb47fec0e267fc83389
[INFO] running `Command { std: "docker" "start" "-a" "ea94208a1dda886dd6e8a1149f424e2b762e90b309b90fb47fec0e267fc83389", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ea94208a1dda886dd6e8a1149f424e2b762e90b309b90fb47fec0e267fc83389", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ea94208a1dda886dd6e8a1149f424e2b762e90b309b90fb47fec0e267fc83389", kill_on_drop: false }`
[INFO] [stdout] ea94208a1dda886dd6e8a1149f424e2b762e90b309b90fb47fec0e267fc83389
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b3163215ba1fbe48491cbd9cc5764bcecb019cc7e01e30744d029f2be82591c2
[INFO] running `Command { std: "docker" "start" "-a" "b3163215ba1fbe48491cbd9cc5764bcecb019cc7e01e30744d029f2be82591c2", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.18
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.31
[INFO] [stderr]    Compiling libc v0.2.102
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling pin-project-internal v0.4.22
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling futures-task v0.3.5
[INFO] [stderr]    Compiling futures-core v0.3.5
[INFO] [stderr]    Compiling pin-project-lite v0.2.6
[INFO] [stderr]    Compiling tokio v1.4.0
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling mio v0.7.11
[INFO] [stderr]    Compiling nix v0.22.1
[INFO] [stderr]    Compiling tokio-macros v1.1.0
[INFO] [stderr]    Compiling async-trait v0.1.36
[INFO] [stderr]    Compiling pin-project v0.4.22
[INFO] [stderr]    Compiling futures-util v0.3.5
[INFO] [stderr]    Compiling nbd-async v0.5.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `fua`
[INFO] [stdout]   --> src/nbd.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 |     fua: bool,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] note: `RequestFlags` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/nbd.rs:21:10
[INFO] [stdout]    |
[INFO] [stdout] 21 | #[derive(Debug, Clone)]
[INFO] [stdout]    |          ^^^^^  ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `no_hole`
[INFO] [stdout]   --> src/nbd.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 |     no_hole: bool,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `RequestFlags` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/nbd.rs:21:10
[INFO] [stdout]    |
[INFO] [stdout] 21 | #[derive(Debug, Clone)]
[INFO] [stdout]    |          ^^^^^  ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.15s
[INFO] running `Command { std: "docker" "inspect" "b3163215ba1fbe48491cbd9cc5764bcecb019cc7e01e30744d029f2be82591c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b3163215ba1fbe48491cbd9cc5764bcecb019cc7e01e30744d029f2be82591c2", kill_on_drop: false }`
[INFO] [stdout] b3163215ba1fbe48491cbd9cc5764bcecb019cc7e01e30744d029f2be82591c2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+beta-2022-02-22" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ac4e8c78a3dff90c4dbff55168c0f4aebce6b59739e8b71b396b91304bceb6e4
[INFO] running `Command { std: "docker" "start" "-a" "ac4e8c78a3dff90c4dbff55168c0f4aebce6b59739e8b71b396b91304bceb6e4", kill_on_drop: false }`
[INFO] [stderr]    Compiling nbd-async v0.5.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `fua`
[INFO] [stdout]   --> src/nbd.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 |     fua: bool,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] note: `RequestFlags` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/nbd.rs:21:10
[INFO] [stdout]    |
[INFO] [stdout] 21 | #[derive(Debug, Clone)]
[INFO] [stdout]    |          ^^^^^  ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `no_hole`
[INFO] [stdout]   --> src/nbd.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 |     no_hole: bool,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `RequestFlags` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/nbd.rs:21:10
[INFO] [stdout]    |
[INFO] [stdout] 21 | #[derive(Debug, Clone)]
[INFO] [stdout]    |          ^^^^^  ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `fua`
[INFO] [stdout]   --> src/nbd.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 |     fua: bool,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] note: `RequestFlags` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/nbd.rs:21:10
[INFO] [stdout]    |
[INFO] [stdout] 21 | #[derive(Debug, Clone)]
[INFO] [stdout]    |          ^^^^^  ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `no_hole`
[INFO] [stdout]   --> src/nbd.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 |     no_hole: bool,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `RequestFlags` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/nbd.rs:21:10
[INFO] [stdout]    |
[INFO] [stdout] 21 | #[derive(Debug, Clone)]
[INFO] [stdout]    |          ^^^^^  ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.09s
[INFO] running `Command { std: "docker" "inspect" "ac4e8c78a3dff90c4dbff55168c0f4aebce6b59739e8b71b396b91304bceb6e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ac4e8c78a3dff90c4dbff55168c0f4aebce6b59739e8b71b396b91304bceb6e4", kill_on_drop: false }`
[INFO] [stdout] ac4e8c78a3dff90c4dbff55168c0f4aebce6b59739e8b71b396b91304bceb6e4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+beta-2022-02-22" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] e952bb1220f27f113d189c9365865b07fa9d53a5b8dbfa923429ea27cc28b685
[INFO] running `Command { std: "docker" "start" "-a" "e952bb1220f27f113d189c9365865b07fa9d53a5b8dbfa923429ea27cc28b685", kill_on_drop: false }`
[INFO] [stderr] warning: field is never read: `fua`
[INFO] [stderr]   --> src/nbd.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 |     fua: bool,
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] note: `RequestFlags` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stderr]   --> src/nbd.rs:21:10
[INFO] [stderr]    |
[INFO] [stderr] 21 | #[derive(Debug, Clone)]
[INFO] [stderr]    |          ^^^^^  ^^^^^
[INFO] [stderr]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `no_hole`
[INFO] [stderr]   --> src/nbd.rs:25:5
[INFO] [stderr]    |
[INFO] [stderr] 25 |     no_hole: bool,
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr] note: `RequestFlags` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stderr]   --> src/nbd.rs:21:10
[INFO] [stderr]    |
[INFO] [stderr] 21 | #[derive(Debug, Clone)]
[INFO] [stderr]    |          ^^^^^  ^^^^^
[INFO] [stderr]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: `nbd-async` (lib) generated 2 warnings
[INFO] [stderr] warning: `nbd-async` (lib test) generated 2 warnings (2 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/nbd_async-7b592d2b2b685598)
[INFO] [stdout] running 0 tests
[INFO] [stderr]    Doc-tests nbd-async
[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] [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" "e952bb1220f27f113d189c9365865b07fa9d53a5b8dbfa923429ea27cc28b685", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e952bb1220f27f113d189c9365865b07fa9d53a5b8dbfa923429ea27cc28b685", kill_on_drop: false }`
[INFO] [stdout] e952bb1220f27f113d189c9365865b07fa9d53a5b8dbfa923429ea27cc28b685