[INFO] fetching crate uringy 0.5.0...
[INFO] checking uringy-0.5.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate uringy 0.5.0 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate uringy 0.5.0 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate uringy 0.5.0
[INFO] finished tweaking crates.io crate uringy 0.5.0
[INFO] tweaked toml for crates.io crate uringy 0.5.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate crates.io crate uringy 0.5.0 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded uringy-macros v0.2.0
[INFO] [stderr]   Downloaded io-uring v0.6.1
[INFO] [stderr]   Downloaded cache-padded v1.3.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a1e6d3a10a522356eecd91d707061ab17e7956a5a062661421f01c9b0d57df20
[INFO] running `Command { std: "docker" "start" "-a" "a1e6d3a10a522356eecd91d707061ab17e7956a5a062661421f01c9b0d57df20", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a1e6d3a10a522356eecd91d707061ab17e7956a5a062661421f01c9b0d57df20", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a1e6d3a10a522356eecd91d707061ab17e7956a5a062661421f01c9b0d57df20", kill_on_drop: false }`
[INFO] [stdout] a1e6d3a10a522356eecd91d707061ab17e7956a5a062661421f01c9b0d57df20
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f2913a7bf79cc85a24178ec837246b716fac6be980b5fc6fb7b46ff97c9d3afe
[INFO] running `Command { std: "docker" "start" "-a" "f2913a7bf79cc85a24178ec837246b716fac6be980b5fc6fb7b46ff97c9d3afe", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.66
[INFO] [stderr]    Compiling io-uring v0.6.1
[INFO] [stderr]     Checking cache-padded v1.3.0
[INFO] [stderr]    Compiling slab v0.4.9
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling syn v2.0.29
[INFO] [stderr]    Compiling uringy-macros v0.2.0
[INFO] [stderr]     Checking uringy v0.5.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::time`
[INFO] [stdout]    --> src/runtime/mod.rs:577:9
[INFO] [stdout]     |
[INFO] [stdout] 577 |     use crate::time;
[INFO] [stdout]     |         ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Duration`, `Instant`
[INFO] [stdout]    --> src/runtime/mod.rs:579:21
[INFO] [stdout]     |
[INFO] [stdout] 579 |     use std::time::{Duration, Instant};
[INFO] [stdout]     |                     ^^^^^^^^  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Duration` is imported redundantly
[INFO] [stdout]    --> src/runtime/mod.rs:583:13
[INFO] [stdout]     |
[INFO] [stdout] 582 |         use super::*;
[INFO] [stdout]     |             -------- the item `Duration` is already imported here
[INFO] [stdout] 583 |         use std::time::Duration;
[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 6.26s
[INFO] running `Command { std: "docker" "inspect" "f2913a7bf79cc85a24178ec837246b716fac6be980b5fc6fb7b46ff97c9d3afe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f2913a7bf79cc85a24178ec837246b716fac6be980b5fc6fb7b46ff97c9d3afe", kill_on_drop: false }`
[INFO] [stdout] f2913a7bf79cc85a24178ec837246b716fac6be980b5fc6fb7b46ff97c9d3afe
[INFO] checking uringy-0.5.0 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] extracting crate uringy 0.5.0 into /workspace/builds/worker-2-tc2/source
[INFO] validating manifest of crates.io crate uringy 0.5.0 on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate uringy 0.5.0
[INFO] finished tweaking crates.io crate uringy 0.5.0
[INFO] tweaked toml for crates.io crate uringy 0.5.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate crates.io crate uringy 0.5.0 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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1f7272d73308e6fffecb39993737a112b9bf314e398722da4379aabc45971b89
[INFO] running `Command { std: "docker" "start" "-a" "1f7272d73308e6fffecb39993737a112b9bf314e398722da4379aabc45971b89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1f7272d73308e6fffecb39993737a112b9bf314e398722da4379aabc45971b89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1f7272d73308e6fffecb39993737a112b9bf314e398722da4379aabc45971b89", kill_on_drop: false }`
[INFO] [stdout] 1f7272d73308e6fffecb39993737a112b9bf314e398722da4379aabc45971b89
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7961b2bad98ce5bc7f9be1e6d307e2b02ad70c104c1f75b06a273a6f984aea33
[INFO] running `Command { std: "docker" "start" "-a" "7961b2bad98ce5bc7f9be1e6d307e2b02ad70c104c1f75b06a273a6f984aea33", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.66
[INFO] [stderr]    Compiling io-uring v0.6.1
[INFO] [stderr]     Checking cache-padded v1.3.0
[INFO] [stderr]    Compiling slab v0.4.9
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling syn v2.0.29
[INFO] [stderr]    Compiling uringy-macros v0.2.0
[INFO] [stderr]     Checking uringy v0.5.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::time`
[INFO] [stdout]    --> src/runtime/mod.rs:577:9
[INFO] [stdout]     |
[INFO] [stdout] 577 |     use crate::time;
[INFO] [stdout]     |         ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Duration`, `Instant`
[INFO] [stdout]    --> src/runtime/mod.rs:579:21
[INFO] [stdout]     |
[INFO] [stdout] 579 |     use std::time::{Duration, Instant};
[INFO] [stdout]     |                     ^^^^^^^^  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Duration` is imported redundantly
[INFO] [stdout]    --> src/runtime/mod.rs:583:13
[INFO] [stdout]     |
[INFO] [stdout] 582 |         use super::*;
[INFO] [stdout]     |             -------- the item `Duration` is already imported here
[INFO] [stdout] 583 |         use std::time::Duration;
[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 6.05s
[INFO] running `Command { std: "docker" "inspect" "7961b2bad98ce5bc7f9be1e6d307e2b02ad70c104c1f75b06a273a6f984aea33", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7961b2bad98ce5bc7f9be1e6d307e2b02ad70c104c1f75b06a273a6f984aea33", kill_on_drop: false }`
[INFO] [stdout] 7961b2bad98ce5bc7f9be1e6d307e2b02ad70c104c1f75b06a273a6f984aea33