[INFO] fetching crate qemu-plugin-sys 10.1.0-v2...
[INFO] checking qemu-plugin-sys-10.1.0-v2 against try#14e4661efa5acbf985e4fe564baae04683366cc1 for pr-157696
[INFO] extracting crate qemu-plugin-sys 10.1.0-v2 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate qemu-plugin-sys 10.1.0-v2
[INFO] finished tweaking crates.io crate qemu-plugin-sys 10.1.0-v2
[INFO] tweaked toml for crates.io crate qemu-plugin-sys 10.1.0-v2 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate qemu-plugin-sys 10.1.0-v2 on toolchain 14e4661efa5acbf985e4fe564baae04683366cc1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+14e4661efa5acbf985e4fe564baae04683366cc1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate qemu-plugin-sys 10.1.0-v2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+14e4661efa5acbf985e4fe564baae04683366cc1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3a6becf2bc8dde7f3fa57ede90e4f284e72d296796fc446bbb1e2c7cc0530151" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 0508e4ed713094e1060337dc289126c188949be0d373a18d6b41e47d7d9cba91
[INFO] running `Command { std: "docker" "start" "0508e4ed713094e1060337dc289126c188949be0d373a18d6b41e47d7d9cba91", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "0508e4ed713094e1060337dc289126c188949be0d373a18d6b41e47d7d9cba91" "/opt/rustwide/cargo-home/bin/cargo" "+14e4661efa5acbf985e4fe564baae04683366cc1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0508e4ed713094e1060337dc289126c188949be0d373a18d6b41e47d7d9cba91", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "0508e4ed713094e1060337dc289126c188949be0d373a18d6b41e47d7d9cba91" "/opt/rustwide/cargo-home/bin/cargo" "+14e4661efa5acbf985e4fe564baae04683366cc1" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling anyhow v1.0.99
[INFO] [stderr]    Compiling qemu-plugin-sys v10.1.0-v2 (/opt/rustwide/workdir)
[INFO] [stderr] warning: qemu-plugin-sys@10.1.0-v2: cargo:rustc-link-arg-cdylib was specified in the build script of qemu-plugin-sys v10.1.0-v2 (/opt/rustwide/workdir), but that package does not contain a cdylib target
[INFO] [stderr] 
[INFO] [stderr] Allowing this was an unintended change in the 1.50 release, and may become an error in the future. For more information, see <https://github.com/rust-lang/cargo/issues/9562>.
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.56s
[INFO] running `Command { std: "docker" "inspect" "0508e4ed713094e1060337dc289126c188949be0d373a18d6b41e47d7d9cba91", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0508e4ed713094e1060337dc289126c188949be0d373a18d6b41e47d7d9cba91", kill_on_drop: false }`
[INFO] [stdout] 0508e4ed713094e1060337dc289126c188949be0d373a18d6b41e47d7d9cba91