[INFO] fetching crate rvemu 0.0.11...
[INFO] checking rvemu-0.0.11 against master#cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c for pr-143170
[INFO] extracting crate rvemu 0.0.11 into /workspace/builds/worker-1-tc1/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-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate rvemu 0.0.11 on toolchain cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "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" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "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" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8e235c48ceb7475bb347d12fdc2c1eb26e1691b858b1e77377faaf07f18a3189
[INFO] running `Command { std: "docker" "start" "-a" "8e235c48ceb7475bb347d12fdc2c1eb26e1691b858b1e77377faaf07f18a3189", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8e235c48ceb7475bb347d12fdc2c1eb26e1691b858b1e77377faaf07f18a3189", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8e235c48ceb7475bb347d12fdc2c1eb26e1691b858b1e77377faaf07f18a3189", kill_on_drop: false }`
[INFO] [stdout] 8e235c48ceb7475bb347d12fdc2c1eb26e1691b858b1e77377faaf07f18a3189
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f93ea99dab53f50dc51de478f6169b4f063132e269e02066804088573778e831
[INFO] running `Command { std: "docker" "start" "-a" "f93ea99dab53f50dc51de478f6169b4f063132e269e02066804088573778e831", kill_on_drop: false }`
[INFO] [stderr]     Checking 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)]` 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)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.51s
[INFO] running `Command { std: "docker" "inspect" "f93ea99dab53f50dc51de478f6169b4f063132e269e02066804088573778e831", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f93ea99dab53f50dc51de478f6169b4f063132e269e02066804088573778e831", kill_on_drop: false }`
[INFO] [stdout] f93ea99dab53f50dc51de478f6169b4f063132e269e02066804088573778e831