[INFO] cloning repository https://github.com/stefanha-ai/libblkio
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/stefanha-ai/libblkio" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstefanha-ai%2Flibblkio", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstefanha-ai%2Flibblkio'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] aef5166af5497f567723ba3d90ab5728c55fcd55
[INFO] checking stefanha-ai/libblkio against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstefanha-ai%2Flibblkio" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/stefanha-ai/libblkio
[INFO] finished tweaking git repo https://github.com/stefanha-ai/libblkio
[INFO] tweaked toml for git repo https://github.com/stefanha-ai/libblkio written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/stefanha-ai/libblkio on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/stefanha-ai/libblkio 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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 26ff956264b6b9aabf2d75460352d6d2d484ba1373e6443da2e7d1c516c72be1
[INFO] running `Command { std: "docker" "start" "-a" "26ff956264b6b9aabf2d75460352d6d2d484ba1373e6443da2e7d1c516c72be1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "26ff956264b6b9aabf2d75460352d6d2d484ba1373e6443da2e7d1c516c72be1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "26ff956264b6b9aabf2d75460352d6d2d484ba1373e6443da2e7d1c516c72be1", kill_on_drop: false }`
[INFO] [stdout] 26ff956264b6b9aabf2d75460352d6d2d484ba1373e6443da2e7d1c516c72be1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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 -Dunmustuse_in_always_ok" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 577653c343c8d6b5609c93de52bcebc663a655a477d1d0834e8de95f9292e171
[INFO] running `Command { std: "docker" "start" "-a" "577653c343c8d6b5609c93de52bcebc663a655a477d1d0834e8de95f9292e171", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling num-traits v0.2.16
[INFO] [stderr]    Compiling rustix v0.38.34
[INFO] [stderr]    Compiling io-uring v0.6.0
[INFO] [stderr]     Checking linux-raw-sys v0.4.13
[INFO] [stderr]     Checking virtio-bindings v0.2.1
[INFO] [stderr]     Checking bitflags v2.5.0
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking memmap2 v0.9.4
[INFO] [stderr]     Checking pci-driver v0.1.4
[INFO] [stderr]     Checking virtio-driver v0.6.1 (/opt/rustwide/workdir/virtio-driver)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> virtio-driver/src/util/eventfd.rs:40:14
[INFO] [stdout]    |
[INFO] [stdout] 40 |     fn as_fd(&self) -> BorrowedFd {
[INFO] [stdout]    |              ^^^^^     ^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |              |
[INFO] [stdout]    |              the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 40 |     fn as_fd(&self) -> BorrowedFd<'_> {
[INFO] [stdout]    |                                  ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking blkio v0.5.1 (/opt/rustwide/workdir/blkio)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> virtio-driver/src/util/eventfd.rs:40:14
[INFO] [stdout]    |
[INFO] [stdout] 40 |     fn as_fd(&self) -> BorrowedFd {
[INFO] [stdout]    |              ^^^^^     ^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |              |
[INFO] [stdout]    |              the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 40 |     fn as_fd(&self) -> BorrowedFd<'_> {
[INFO] [stdout]    |                                  ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> virtio-driver/src/util/eventfd.rs:40:14
[INFO] [stdout]    |
[INFO] [stdout] 40 |     fn as_fd(&self) -> BorrowedFd {
[INFO] [stdout]    |              ^^^^^     ^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |              |
[INFO] [stdout]    |              the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 40 |     fn as_fd(&self) -> BorrowedFd<'_> {
[INFO] [stdout]    |                                  ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<i64, Infallible>
[INFO] [stdout]   --> blkio/src/wait.rs:63:18
[INFO] [stdout]    |
[INFO] [stdout] 63 |         tv_nsec: t.subsec_nanos().try_into().unwrap(),
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `blkio` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<i64, Infallible>
[INFO] [stdout]   --> blkio/src/wait.rs:63:18
[INFO] [stdout]    |
[INFO] [stdout] 63 |         tv_nsec: t.subsec_nanos().try_into().unwrap(),
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `blkio` (lib) due to 1 previous error
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<i64, Infallible>
[INFO] [stdout]   --> blkio/src/wait.rs:63:18
[INFO] [stdout]    |
[INFO] [stdout] 63 |         tv_nsec: t.subsec_nanos().try_into().unwrap(),
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `blkio` (lib test) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "577653c343c8d6b5609c93de52bcebc663a655a477d1d0834e8de95f9292e171", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "577653c343c8d6b5609c93de52bcebc663a655a477d1d0834e8de95f9292e171", kill_on_drop: false }`
[INFO] [stdout] 577653c343c8d6b5609c93de52bcebc663a655a477d1d0834e8de95f9292e171