[INFO] fetching crate vhost-user-backend 0.8.0...
[INFO] testing vhost-user-backend-0.8.0 against try#fc4ba03ef77ca5018fb78a097d3b924d30f15bfc+target=i686-unknown-linux-musl for musl_upgrade_1_2_take3
[INFO] extracting crate vhost-user-backend 0.8.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate vhost-user-backend 0.8.0 on toolchain fc4ba03ef77ca5018fb78a097d3b924d30f15bfc
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+fc4ba03ef77ca5018fb78a097d3b924d30f15bfc" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate vhost-user-backend 0.8.0
[INFO] finished tweaking crates.io crate vhost-user-backend 0.8.0
[INFO] tweaked toml for crates.io crate vhost-user-backend 0.8.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+fc4ba03ef77ca5018fb78a097d3b924d30f15bfc" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+fc4ba03ef77ca5018fb78a097d3b924d30f15bfc" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded virtio-bindings v0.1.0
[INFO] [stderr]   Downloaded vhost v0.6.0
[INFO] [stderr]   Downloaded virtio-queue v0.7.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:bb5b0feb4f87116a4ea905b7ff5bf5b85913db05e9f0fbc1abdd3168928d9075" "/opt/rustwide/cargo-home/bin/cargo" "+fc4ba03ef77ca5018fb78a097d3b924d30f15bfc" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 77e72cea7d0179262fb8cdd01468a86e1862aadbfb53f3adb4e0f9ee15dad887
[INFO] running `Command { std: "docker" "start" "-a" "77e72cea7d0179262fb8cdd01468a86e1862aadbfb53f3adb4e0f9ee15dad887", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "77e72cea7d0179262fb8cdd01468a86e1862aadbfb53f3adb4e0f9ee15dad887", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "77e72cea7d0179262fb8cdd01468a86e1862aadbfb53f3adb4e0f9ee15dad887", kill_on_drop: false }`
[INFO] [stdout] 77e72cea7d0179262fb8cdd01468a86e1862aadbfb53f3adb4e0f9ee15dad887
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:bb5b0feb4f87116a4ea905b7ff5bf5b85913db05e9f0fbc1abdd3168928d9075" "/opt/rustwide/cargo-home/bin/cargo" "+fc4ba03ef77ca5018fb78a097d3b924d30f15bfc" "build" "--frozen" "--message-format=json" "--target" "i686-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] b54bfa5e139c277631459fe7849d139de5362d7fa1ff807b7ed69e67a09b8b74
[INFO] running `Command { std: "docker" "start" "-a" "b54bfa5e139c277631459fe7849d139de5362d7fa1ff807b7ed69e67a09b8b74", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.138
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling arc-swap v1.5.1
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling virtio-bindings v0.1.0
[INFO] [stderr]    Compiling vmm-sys-util v0.11.0
[INFO] [stderr]    Compiling vm-memory v0.10.0
[INFO] [stderr]    Compiling vhost v0.6.0
[INFO] [stderr]    Compiling virtio-queue v0.7.0
[INFO] [stderr]    Compiling vhost-user-backend v0.8.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.17s
[INFO] running `Command { std: "docker" "inspect" "b54bfa5e139c277631459fe7849d139de5362d7fa1ff807b7ed69e67a09b8b74", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b54bfa5e139c277631459fe7849d139de5362d7fa1ff807b7ed69e67a09b8b74", kill_on_drop: false }`
[INFO] [stdout] b54bfa5e139c277631459fe7849d139de5362d7fa1ff807b7ed69e67a09b8b74
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:bb5b0feb4f87116a4ea905b7ff5bf5b85913db05e9f0fbc1abdd3168928d9075" "/opt/rustwide/cargo-home/bin/cargo" "+fc4ba03ef77ca5018fb78a097d3b924d30f15bfc" "test" "--frozen" "--no-run" "--message-format=json" "--target" "i686-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] 51e702a388e8c848cf04f07f36881a398cb8c5d9725bb2999913df43c1d517c7
[INFO] running `Command { std: "docker" "start" "-a" "51e702a388e8c848cf04f07f36881a398cb8c5d9725bb2999913df43c1d517c7", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling pin-utils v0.1.0
[INFO] [stderr]    Compiling remove_dir_all v0.5.3
[INFO] [stderr]    Compiling fastrand v1.8.0
[INFO] [stderr]    Compiling tempfile v3.3.0
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling nix v0.25.1
[INFO] [stderr]    Compiling vhost-user-backend v0.8.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 11.25s
[INFO] running `Command { std: "docker" "inspect" "51e702a388e8c848cf04f07f36881a398cb8c5d9725bb2999913df43c1d517c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "51e702a388e8c848cf04f07f36881a398cb8c5d9725bb2999913df43c1d517c7", kill_on_drop: false }`
[INFO] [stdout] 51e702a388e8c848cf04f07f36881a398cb8c5d9725bb2999913df43c1d517c7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:bb5b0feb4f87116a4ea905b7ff5bf5b85913db05e9f0fbc1abdd3168928d9075" "/opt/rustwide/cargo-home/bin/cargo" "+fc4ba03ef77ca5018fb78a097d3b924d30f15bfc" "test" "--frozen" "--target" "i686-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] 35e12ce413904860e81dd8915dca3b68afef38ef92a83a6c04fdf435dd7f6fe5
[INFO] running `Command { std: "docker" "start" "-a" "35e12ce413904860e81dd8915dca3b68afef38ef92a83a6c04fdf435dd7f6fe5", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/i686-unknown-linux-musl/debug/deps/vhost_user_backend-cb442dbe3a009f1a)
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test backend::tests::test_new_mock_backend_rwlock ... ok
[INFO] [stdout] test vring::tests::test_new_vring ... ok
[INFO] [stdout] test vring::tests::test_vring_set_fd ... ok
[INFO] [stdout] test event_loop::tests::test_vring_epoll_handler ... ok
[INFO] [stdout] test tests::test_new_daemon_client ... ok
[INFO] [stderr]      Running tests/vhost-user-server.rs (/opt/rustwide/target/i686-unknown-linux-musl/debug/deps/vhost_user_server-9fd7a8c0991ab0bc)
[INFO] [stdout] test tests::test_new_daemon ... ok
[INFO] [stdout] test backend::tests::test_new_mock_backend_mutex ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test test_vhost_user_get_inflight ... ok
[INFO] [stdout] test test_vhost_user_set_inflight ... ok
[INFO] [stdout] test test_vhost_user_server ... ok
[INFO] [stdout] test test_vhost_user_enable ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "35e12ce413904860e81dd8915dca3b68afef38ef92a83a6c04fdf435dd7f6fe5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "35e12ce413904860e81dd8915dca3b68afef38ef92a83a6c04fdf435dd7f6fe5", kill_on_drop: false }`
[INFO] [stdout] 35e12ce413904860e81dd8915dca3b68afef38ef92a83a6c04fdf435dd7f6fe5