[INFO] fetching crate polling 3.3.1...
[INFO] checking polling-3.3.1 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate polling 3.3.1 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate polling 3.3.1 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 polling 3.3.1
[INFO] finished tweaking crates.io crate polling 3.3.1
[INFO] tweaked toml for crates.io crate polling 3.3.1 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate crates.io crate polling 3.3.1 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]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded windows-targets v0.52.0
[INFO] [stderr]   Downloaded easy-parallel v3.3.1
[INFO] [stderr]   Downloaded windows_aarch64_gnullvm v0.52.0
[INFO] [stderr]   Downloaded windows_x86_64_gnullvm v0.52.0
[INFO] [stderr]   Downloaded windows_i686_msvc v0.52.0
[INFO] [stderr]   Downloaded windows_aarch64_msvc v0.52.0
[INFO] [stderr]   Downloaded windows_i686_gnu v0.52.0
[INFO] [stderr]   Downloaded windows_x86_64_gnu v0.52.0
[INFO] [stderr]   Downloaded windows_x86_64_msvc v0.52.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 442d88d3d99294dd192135c1206c3fbdac4262cfef5f9c950a2c6baba8dcf7f5
[INFO] running `Command { std: "docker" "start" "-a" "442d88d3d99294dd192135c1206c3fbdac4262cfef5f9c950a2c6baba8dcf7f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "442d88d3d99294dd192135c1206c3fbdac4262cfef5f9c950a2c6baba8dcf7f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "442d88d3d99294dd192135c1206c3fbdac4262cfef5f9c950a2c6baba8dcf7f5", kill_on_drop: false }`
[INFO] [stdout] 442d88d3d99294dd192135c1206c3fbdac4262cfef5f9c950a2c6baba8dcf7f5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] a18ee7a7fbea63bcef4c0fb9824bf69c86885232ca7d9a8f2874a15929a73e9c
[INFO] running `Command { std: "docker" "start" "-a" "a18ee7a7fbea63bcef4c0fb9824bf69c86885232ca7d9a8f2874a15929a73e9c", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.150
[INFO] [stderr]    Compiling rustix v0.38.25
[INFO] [stderr]     Checking linux-raw-sys v0.4.11
[INFO] [stderr]    Compiling signal-hook v0.3.17
[INFO] [stderr]     Checking pin-project-lite v0.2.13
[INFO] [stderr]     Checking tracing-core v0.1.32
[INFO] [stderr]     Checking bitflags v2.4.1
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking fastrand v2.0.1
[INFO] [stderr]     Checking easy-parallel v3.3.1
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stderr]     Checking signal-hook-registry v1.4.1
[INFO] [stderr]     Checking polling v3.3.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait `PollerSealed` is never used
[INFO] [stdout]   --> src/os.rs:23:15
[INFO] [stdout]    |
[INFO] [stdout] 23 |     pub trait PollerSealed {}
[INFO] [stdout]    |               ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `PollerSealed` is never used
[INFO] [stdout]   --> src/os.rs:23:15
[INFO] [stdout]    |
[INFO] [stdout] 23 |     pub trait PollerSealed {}
[INFO] [stdout]    |               ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.23s
[INFO] running `Command { std: "docker" "inspect" "a18ee7a7fbea63bcef4c0fb9824bf69c86885232ca7d9a8f2874a15929a73e9c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a18ee7a7fbea63bcef4c0fb9824bf69c86885232ca7d9a8f2874a15929a73e9c", kill_on_drop: false }`
[INFO] [stdout] a18ee7a7fbea63bcef4c0fb9824bf69c86885232ca7d9a8f2874a15929a73e9c
[INFO] checking polling-3.3.1 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] extracting crate polling 3.3.1 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate polling 3.3.1 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 polling 3.3.1
[INFO] finished tweaking crates.io crate polling 3.3.1
[INFO] tweaked toml for crates.io crate polling 3.3.1 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate crates.io crate polling 3.3.1 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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] b054526639e758c3decd551a1e4f79643a99f6046ffbf27362d1f70307472b32
[INFO] running `Command { std: "docker" "start" "-a" "b054526639e758c3decd551a1e4f79643a99f6046ffbf27362d1f70307472b32", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b054526639e758c3decd551a1e4f79643a99f6046ffbf27362d1f70307472b32", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b054526639e758c3decd551a1e4f79643a99f6046ffbf27362d1f70307472b32", kill_on_drop: false }`
[INFO] [stdout] b054526639e758c3decd551a1e4f79643a99f6046ffbf27362d1f70307472b32
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 7febe3aab500cec5defc0457f829ce398405f18d0c5c42a9ceefbef317b23b3e
[INFO] running `Command { std: "docker" "start" "-a" "7febe3aab500cec5defc0457f829ce398405f18d0c5c42a9ceefbef317b23b3e", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.150
[INFO] [stderr]    Compiling rustix v0.38.25
[INFO] [stderr]     Checking bitflags v2.4.1
[INFO] [stderr]     Checking pin-project-lite v0.2.13
[INFO] [stderr]    Compiling signal-hook v0.3.17
[INFO] [stderr]     Checking linux-raw-sys v0.4.11
[INFO] [stderr]     Checking tracing-core v0.1.32
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking easy-parallel v3.3.1
[INFO] [stderr]     Checking fastrand v2.0.1
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stderr]     Checking signal-hook-registry v1.4.1
[INFO] [stderr]     Checking polling v3.3.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait `PollerSealed` is never used
[INFO] [stdout]   --> src/os.rs:23:15
[INFO] [stdout]    |
[INFO] [stdout] 23 |     pub trait PollerSealed {}
[INFO] [stdout]    |               ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `PollerSealed` is never used
[INFO] [stdout]   --> src/os.rs:23:15
[INFO] [stdout]    |
[INFO] [stdout] 23 |     pub trait PollerSealed {}
[INFO] [stdout]    |               ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.14s
[INFO] running `Command { std: "docker" "inspect" "7febe3aab500cec5defc0457f829ce398405f18d0c5c42a9ceefbef317b23b3e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7febe3aab500cec5defc0457f829ce398405f18d0c5c42a9ceefbef317b23b3e", kill_on_drop: false }`
[INFO] [stdout] 7febe3aab500cec5defc0457f829ce398405f18d0c5c42a9ceefbef317b23b3e