[INFO] fetching crate rvemu 0.0.11...
[INFO] testing rvemu-0.0.11 against beta-2022-02-22 for beta-1.60-1
[INFO] extracting crate rvemu 0.0.11 into /workspace/builds/worker-100/source
[INFO] validating manifest of crates.io crate rvemu 0.0.11 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 rvemu 0.0.11
[INFO] finished tweaking crates.io crate rvemu 0.0.11
[INFO] tweaked toml for crates.io crate rvemu 0.0.11 written to /workspace/builds/worker-100/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/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] bd1bacfc54455bb4d2f3618b9dc53320e8a9813e31fcb082798b056806f4ed5c
[INFO] running `Command { std: "docker" "start" "-a" "bd1bacfc54455bb4d2f3618b9dc53320e8a9813e31fcb082798b056806f4ed5c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bd1bacfc54455bb4d2f3618b9dc53320e8a9813e31fcb082798b056806f4ed5c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bd1bacfc54455bb4d2f3618b9dc53320e8a9813e31fcb082798b056806f4ed5c", kill_on_drop: false }`
[INFO] [stdout] bd1bacfc54455bb4d2f3618b9dc53320e8a9813e31fcb082798b056806f4ed5c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/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] 90e7beafc7773acd520414c720cea9edf28e578bf82ff0d713f9be030115c3df
[INFO] running `Command { std: "docker" "start" "-a" "90e7beafc7773acd520414c720cea9edf28e578bf82ff0d713f9be030115c3df", kill_on_drop: false }`
[INFO] [stderr]    Compiling rvemu v0.0.11 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `flags`
[INFO] [stdout]    --> src/devices/virtio_blk.rs:250:5
[INFO] [stdout]     |
[INFO] [stdout] 250 |     flags: u16,
[INFO] [stdout]     |     ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] note: `VirtqAvail` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    --> src/devices/virtio_blk.rs:248:10
[INFO] [stdout]     |
[INFO] [stdout] 248 | #[derive(Debug)]
[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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.92s
[INFO] running `Command { std: "docker" "inspect" "90e7beafc7773acd520414c720cea9edf28e578bf82ff0d713f9be030115c3df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "90e7beafc7773acd520414c720cea9edf28e578bf82ff0d713f9be030115c3df", kill_on_drop: false }`
[INFO] [stdout] 90e7beafc7773acd520414c720cea9edf28e578bf82ff0d713f9be030115c3df
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/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] 18006021fc3f87ce97abab31be96469e2503f23e777a01483326c951922743b9
[INFO] running `Command { std: "docker" "start" "-a" "18006021fc3f87ce97abab31be96469e2503f23e777a01483326c951922743b9", kill_on_drop: false }`
[INFO] [stdout] warning: field is never read: `flags`
[INFO] [stdout]    --> src/devices/virtio_blk.rs:250:5
[INFO] [stdout]     |
[INFO] [stdout] 250 |     flags: u16,
[INFO] [stdout]     |     ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] note: `VirtqAvail` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    --> src/devices/virtio_blk.rs:248:10
[INFO] [stdout]     |
[INFO] [stdout] 248 | #[derive(Debug)]
[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] [stderr]    Compiling rvemu v0.0.11 (/opt/rustwide/workdir)
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `flags`
[INFO] [stdout]    --> src/devices/virtio_blk.rs:250:5
[INFO] [stdout]     |
[INFO] [stdout] 250 |     flags: u16,
[INFO] [stdout]     |     ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] note: `VirtqAvail` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    --> src/devices/virtio_blk.rs:248:10
[INFO] [stdout]     |
[INFO] [stdout] 248 | #[derive(Debug)]
[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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.22s
[INFO] running `Command { std: "docker" "inspect" "18006021fc3f87ce97abab31be96469e2503f23e777a01483326c951922743b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "18006021fc3f87ce97abab31be96469e2503f23e777a01483326c951922743b9", kill_on_drop: false }`
[INFO] [stdout] 18006021fc3f87ce97abab31be96469e2503f23e777a01483326c951922743b9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/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] 7694275e586142121f3510b1f47ea5adb5cd54a615884f1bb36d477876d5d0ff
[INFO] running `Command { std: "docker" "start" "-a" "7694275e586142121f3510b1f47ea5adb5cd54a615884f1bb36d477876d5d0ff", kill_on_drop: false }`
[INFO] [stderr] warning: field is never read: `flags`
[INFO] [stderr]    --> src/devices/virtio_blk.rs:250:5
[INFO] [stderr]     |
[INFO] [stderr] 250 |     flags: u16,
[INFO] [stderr]     |     ^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] note: `VirtqAvail` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]    --> src/devices/virtio_blk.rs:248:10
[INFO] [stderr]     |
[INFO] [stderr] 248 | #[derive(Debug)]
[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: `rvemu` (lib) generated 1 warning
[INFO] [stderr] warning: `rvemu` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rvemu-59fe206455cdd963)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests rvemu
[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] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - (line 6) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.39s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "7694275e586142121f3510b1f47ea5adb5cd54a615884f1bb36d477876d5d0ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7694275e586142121f3510b1f47ea5adb5cd54a615884f1bb36d477876d5d0ff", kill_on_drop: false }`
[INFO] [stdout] 7694275e586142121f3510b1f47ea5adb5cd54a615884f1bb36d477876d5d0ff