[INFO] cloning repository https://github.com/kiranshila/cap_iouring
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kiranshila/cap_iouring" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkiranshila%2Fcap_iouring", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkiranshila%2Fcap_iouring'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 55318a406233191e54b550c01671c1a06025e4d3
[INFO] checking kiranshila/cap_iouring against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkiranshila%2Fcap_iouring" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kiranshila/cap_iouring on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-1-tc1/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/kiranshila/cap_iouring
[INFO] finished tweaking git repo https://github.com/kiranshila/cap_iouring
[INFO] tweaked toml for git repo https://github.com/kiranshila/cap_iouring written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/kiranshila/cap_iouring 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tokio-uring v0.4.0
[INFO] [stderr]   Downloaded io-uring v0.5.12
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 384d004b61d98987af178b3c36cd680436a8bf5381c902f4afc87c209a13db56
[INFO] running `Command { std: "docker" "start" "-a" "384d004b61d98987af178b3c36cd680436a8bf5381c902f4afc87c209a13db56", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "384d004b61d98987af178b3c36cd680436a8bf5381c902f4afc87c209a13db56", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "384d004b61d98987af178b3c36cd680436a8bf5381c902f4afc87c209a13db56", kill_on_drop: false }`
[INFO] [stdout] 384d004b61d98987af178b3c36cd680436a8bf5381c902f4afc87c209a13db56
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] eac98681d366adb8c17f7e0229f2e447f95565cf861c5b9f033aa1e7f9bc4698
[INFO] running `Command { std: "docker" "start" "-a" "eac98681d366adb8c17f7e0229f2e447f95565cf861c5b9f033aa1e7f9bc4698", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]    Compiling tokio v1.25.0
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling io-uring v0.5.12
[INFO] [stderr]     Checking scoped-tls v1.0.1
[INFO] [stderr]     Checking either v1.8.1
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]     Checking mio v0.8.5
[INFO] [stderr]     Checking socket2 v0.4.7
[INFO] [stderr]     Checking num-complex v0.4.3
[INFO] [stderr]     Checking tokio-uring v0.4.0
[INFO] [stderr]     Checking cap_iouring v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.83s
[INFO] running `Command { std: "docker" "inspect" "eac98681d366adb8c17f7e0229f2e447f95565cf861c5b9f033aa1e7f9bc4698", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eac98681d366adb8c17f7e0229f2e447f95565cf861c5b9f033aa1e7f9bc4698", kill_on_drop: false }`
[INFO] [stdout] eac98681d366adb8c17f7e0229f2e447f95565cf861c5b9f033aa1e7f9bc4698
[INFO] checking kiranshila/cap_iouring against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkiranshila%2Fcap_iouring" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kiranshila/cap_iouring on toolchain 3a4bc97f6385a3aa300a4fd689b44350e54fd676
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-1-tc2/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/kiranshila/cap_iouring
[INFO] finished tweaking git repo https://github.com/kiranshila/cap_iouring
[INFO] tweaked toml for git repo https://github.com/kiranshila/cap_iouring written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/kiranshila/cap_iouring 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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "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-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 945e701179b4ca68b052153e592d278df10278697e66506b9d5e97dbcf1ea3d9
[INFO] running `Command { std: "docker" "start" "-a" "945e701179b4ca68b052153e592d278df10278697e66506b9d5e97dbcf1ea3d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "945e701179b4ca68b052153e592d278df10278697e66506b9d5e97dbcf1ea3d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "945e701179b4ca68b052153e592d278df10278697e66506b9d5e97dbcf1ea3d9", kill_on_drop: false }`
[INFO] [stdout] 945e701179b4ca68b052153e592d278df10278697e66506b9d5e97dbcf1ea3d9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9c5899e2709fc753a38f5d263c74615dc9a5e9f05aa97e18e58370220e9b985c
[INFO] running `Command { std: "docker" "start" "-a" "9c5899e2709fc753a38f5d263c74615dc9a5e9f05aa97e18e58370220e9b985c", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]    Compiling tokio v1.25.0
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling io-uring v0.5.12
[INFO] [stderr]     Checking either v1.8.1
[INFO] [stderr]     Checking scoped-tls v1.0.1
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]     Checking mio v0.8.5
[INFO] [stderr]     Checking socket2 v0.4.7
[INFO] [stderr]     Checking num-complex v0.4.3
[INFO] [stderr]     Checking tokio-uring v0.4.0
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/tokio-uring-0.4.0/src/runtime/mod.rs:83:24
[INFO] [stdout]    |
[INFO] [stdout] 83 |               async move {
[INFO] [stdout]    |  ________________________^
[INFO] [stdout] 84 | |                 loop {
[INFO] [stdout] 85 | |                     // Wait for read-readiness
[INFO] [stdout] 86 | |                     let mut guard = driver.readable().await.unwrap();
[INFO] [stdout] ...  |
[INFO] [stdout] 89 | |                 }
[INFO] [stdout] 90 | |             }
[INFO] [stdout]    | |_____________^ cannot infer type
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `tokio-uring` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "9c5899e2709fc753a38f5d263c74615dc9a5e9f05aa97e18e58370220e9b985c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9c5899e2709fc753a38f5d263c74615dc9a5e9f05aa97e18e58370220e9b985c", kill_on_drop: false }`
[INFO] [stdout] 9c5899e2709fc753a38f5d263c74615dc9a5e9f05aa97e18e58370220e9b985c