[INFO] fetching crate rvemu 0.0.11...
[INFO] building rvemu-0.0.11 against try#d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6 for pr-146237-1
[INFO] extracting crate rvemu 0.0.11 into /workspace/builds/worker-2-tc2/source
[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-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate rvemu 0.0.11 on toolchain d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 17 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b4931d90f54373f9a074f14df54e1b707b39410b3c7df8872798b6fd3eef2302
[INFO] running `Command { std: "docker" "start" "-a" "b4931d90f54373f9a074f14df54e1b707b39410b3c7df8872798b6fd3eef2302", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b4931d90f54373f9a074f14df54e1b707b39410b3c7df8872798b6fd3eef2302", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b4931d90f54373f9a074f14df54e1b707b39410b3c7df8872798b6fd3eef2302", kill_on_drop: false }`
[INFO] [stdout] b4931d90f54373f9a074f14df54e1b707b39410b3c7df8872798b6fd3eef2302
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f643fcc0f5f24c61b4de56bf5a4face642a3b9a3c8e2fa96c1734264d4bd051a
[INFO] running `Command { std: "docker" "start" "-a" "f643fcc0f5f24c61b4de56bf5a4face642a3b9a3c8e2fa96c1734264d4bd051a", kill_on_drop: false }`
[INFO] [stderr]    Compiling rvemu v0.0.11 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `flags` is never read
[INFO] [stdout]    --> src/devices/virtio_blk.rs:250:5
[INFO] [stdout]     |
[INFO] [stdout] 249 | struct VirtqAvail {
[INFO] [stdout]     |        ---------- field in this struct
[INFO] [stdout] 250 |     flags: u16,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `VirtqAvail` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.21s
[INFO] running `Command { std: "docker" "inspect" "f643fcc0f5f24c61b4de56bf5a4face642a3b9a3c8e2fa96c1734264d4bd051a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f643fcc0f5f24c61b4de56bf5a4face642a3b9a3c8e2fa96c1734264d4bd051a", kill_on_drop: false }`
[INFO] [stdout] f643fcc0f5f24c61b4de56bf5a4face642a3b9a3c8e2fa96c1734264d4bd051a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c4fed1ce9195ae26a9248720a26f4189524051bd82f056297aafef3da04d62fc
[INFO] running `Command { std: "docker" "start" "-a" "c4fed1ce9195ae26a9248720a26f4189524051bd82f056297aafef3da04d62fc", kill_on_drop: false }`
[INFO] [stderr]    Compiling rvemu v0.0.11 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `flags` is never read
[INFO] [stdout]    --> src/devices/virtio_blk.rs:250:5
[INFO] [stdout]     |
[INFO] [stdout] 249 | struct VirtqAvail {
[INFO] [stdout]     |        ---------- field in this struct
[INFO] [stdout] 250 |     flags: u16,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `VirtqAvail` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `flags` is never read
[INFO] [stdout]    --> src/devices/virtio_blk.rs:250:5
[INFO] [stdout]     |
[INFO] [stdout] 249 | struct VirtqAvail {
[INFO] [stdout]     |        ---------- field in this struct
[INFO] [stdout] 250 |     flags: u16,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `VirtqAvail` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.79s
[INFO] running `Command { std: "docker" "inspect" "c4fed1ce9195ae26a9248720a26f4189524051bd82f056297aafef3da04d62fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c4fed1ce9195ae26a9248720a26f4189524051bd82f056297aafef3da04d62fc", kill_on_drop: false }`
[INFO] [stdout] c4fed1ce9195ae26a9248720a26f4189524051bd82f056297aafef3da04d62fc
