[INFO] cloning repository https://github.com/LizardWizzard/uring_playground
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/LizardWizzard/uring_playground" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLizardWizzard%2Furing_playground", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLizardWizzard%2Furing_playground'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a9359c3245e8b1fa46093867b17c4989702c34cd
[INFO] checking LizardWizzard/uring_playground against master#426a60abc213b28a7c7198e475476b6e650d871f for pr-129199
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLizardWizzard%2Furing_playground" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/LizardWizzard/uring_playground on toolchain 426a60abc213b28a7c7198e475476b6e650d871f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+426a60abc213b28a7c7198e475476b6e650d871f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/LizardWizzard/uring_playground
[INFO] finished tweaking git repo https://github.com/LizardWizzard/uring_playground
[INFO] tweaked toml for git repo https://github.com/LizardWizzard/uring_playground written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/LizardWizzard/uring_playground 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" "+426a60abc213b28a7c7198e475476b6e650d871f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[ERROR] this task or one of its parent failed!
[ERROR] no output for 300 seconds
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] checking LizardWizzard/uring_playground against try#2c70eb47850052381670935f807d41647a7dc992 for pr-129199
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLizardWizzard%2Furing_playground" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/LizardWizzard/uring_playground on toolchain 2c70eb47850052381670935f807d41647a7dc992
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2c70eb47850052381670935f807d41647a7dc992" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/LizardWizzard/uring_playground
[INFO] finished tweaking git repo https://github.com/LizardWizzard/uring_playground
[INFO] tweaked toml for git repo https://github.com/LizardWizzard/uring_playground written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/LizardWizzard/uring_playground 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" "+2c70eb47850052381670935f807d41647a7dc992" "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
[ERROR] error running command: no output for 300 seconds
[INFO] checking LizardWizzard/uring_playground against try#2c70eb47850052381670935f807d41647a7dc992 for pr-129199
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLizardWizzard%2Furing_playground" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/LizardWizzard/uring_playground on toolchain 2c70eb47850052381670935f807d41647a7dc992
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2c70eb47850052381670935f807d41647a7dc992" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/LizardWizzard/uring_playground
[INFO] finished tweaking git repo https://github.com/LizardWizzard/uring_playground
[INFO] tweaked toml for git repo https://github.com/LizardWizzard/uring_playground written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/LizardWizzard/uring_playground 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" "+2c70eb47850052381670935f807d41647a7dc992" "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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+2c70eb47850052381670935f807d41647a7dc992" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f7a5abc886c3385f79d634b1d0f8321e0c3c87eebd5cea1e88db3ea3c378cdcf
[INFO] running `Command { std: "docker" "start" "-a" "f7a5abc886c3385f79d634b1d0f8321e0c3c87eebd5cea1e88db3ea3c378cdcf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f7a5abc886c3385f79d634b1d0f8321e0c3c87eebd5cea1e88db3ea3c378cdcf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f7a5abc886c3385f79d634b1d0f8321e0c3c87eebd5cea1e88db3ea3c378cdcf", kill_on_drop: false }`
[INFO] [stdout] f7a5abc886c3385f79d634b1d0f8321e0c3c87eebd5cea1e88db3ea3c378cdcf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+2c70eb47850052381670935f807d41647a7dc992" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9a963ccf84604bdad51f629b001315b4f750b82483ce1909be52118f61b3ca80
[INFO] running `Command { std: "docker" "start" "-a" "9a963ccf84604bdad51f629b001315b4f750b82483ce1909be52118f61b3ca80", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.155
[INFO] [stderr]    Compiling rustix v0.38.34
[INFO] [stderr]    Compiling io-uring v0.6.4
[INFO] [stderr]     Checking linux-raw-sys v0.4.14
[INFO] [stderr]    Compiling uring_playground v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: constant `NVME_URING_CMD_IO_VEC` is never used
[INFO] [stdout]   --> src/sys/mod.rs:20:11
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub const NVME_URING_CMD_IO_VEC: Opcode =
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple variants are never constructed
[INFO] [stdout]   --> src/sys/mod.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub enum NvmeOpcode {
[INFO] [stdout]    |          ---------- variants in this enum
[INFO] [stdout] 31 |     Flush = 0x00,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 32 |     Write = 0x01,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 33 |     Read = 0x02,
[INFO] [stdout] 34 |     WriteUncor = 0x04,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 35 |     Compare = 0x05,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 36 |     WriteZeroes = 0x08,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 37 |     Dsm = 0x09,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 38 |     Verify = 0x0c,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 39 |     ResvRegister = 0x0d,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 40 |     ResvReport = 0x0e,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 41 |     ResvAcquire = 0x11,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 42 |     ResvRelease = 0x15,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 43 |     ZoneMgmtSend = 0x79,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 44 |     ZoneMgmtRecv = 0x7a,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 45 |     ZoneAppend = 0x7d,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 46 |     VendorStart = 0x80,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `write` is never used
[INFO] [stdout]   --> src/sys/mod.rs:84:19
[INFO] [stdout]    |
[INFO] [stdout] 57 | impl NvmeUringCmd {
[INFO] [stdout]    | ----------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 84 |     pub unsafe fn write(nsid: u32, starting_lba: Lba, num_blocks: u32, buf: &[u8]) -> Self {
[INFO] [stdout]    |                   ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `NVME_URING_CMD_IO_VEC` is never used
[INFO] [stdout]   --> src/sys/mod.rs:20:11
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub const NVME_URING_CMD_IO_VEC: Opcode =
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple variants are never constructed
[INFO] [stdout]   --> src/sys/mod.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub enum NvmeOpcode {
[INFO] [stdout]    |          ---------- variants in this enum
[INFO] [stdout] 31 |     Flush = 0x00,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 32 |     Write = 0x01,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 33 |     Read = 0x02,
[INFO] [stdout] 34 |     WriteUncor = 0x04,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 35 |     Compare = 0x05,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 36 |     WriteZeroes = 0x08,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 37 |     Dsm = 0x09,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 38 |     Verify = 0x0c,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 39 |     ResvRegister = 0x0d,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 40 |     ResvReport = 0x0e,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 41 |     ResvAcquire = 0x11,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 42 |     ResvRelease = 0x15,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 43 |     ZoneMgmtSend = 0x79,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 44 |     ZoneMgmtRecv = 0x7a,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 45 |     ZoneAppend = 0x7d,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 46 |     VendorStart = 0x80,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `write` is never used
[INFO] [stdout]   --> src/sys/mod.rs:84:19
[INFO] [stdout]    |
[INFO] [stdout] 57 | impl NvmeUringCmd {
[INFO] [stdout]    | ----------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 84 |     pub unsafe fn write(nsid: u32, starting_lba: Lba, num_blocks: u32, buf: &[u8]) -> Self {
[INFO] [stdout]    |                   ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.84s
[INFO] running `Command { std: "docker" "inspect" "9a963ccf84604bdad51f629b001315b4f750b82483ce1909be52118f61b3ca80", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9a963ccf84604bdad51f629b001315b4f750b82483ce1909be52118f61b3ca80", kill_on_drop: false }`
[INFO] [stdout] 9a963ccf84604bdad51f629b001315b4f750b82483ce1909be52118f61b3ca80