[INFO] fetching crate reool 0.30.0...
[INFO] checking reool-0.30.0 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate reool 0.30.0 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate reool 0.30.0 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] started tweaking crates.io crate reool 0.30.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate reool 0.30.0
[INFO] tweaked toml for crates.io crate reool 0.30.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate crates.io crate reool 0.30.0 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded instant v0.1.10
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 0cc5b0edcf1a9e3a7f7f0221bc7d3cc743107b66efb9f50d0087eddb3de7529b
[INFO] running `Command { std: "docker" "start" "-a" "0cc5b0edcf1a9e3a7f7f0221bc7d3cc743107b66efb9f50d0087eddb3de7529b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0cc5b0edcf1a9e3a7f7f0221bc7d3cc743107b66efb9f50d0087eddb3de7529b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0cc5b0edcf1a9e3a7f7f0221bc7d3cc743107b66efb9f50d0087eddb3de7529b", kill_on_drop: false }`
[INFO] [stdout] 0cc5b0edcf1a9e3a7f7f0221bc7d3cc743107b66efb9f50d0087eddb3de7529b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 6c1f346780d5c78be683c8c769d8ddb67e6e3c3c1a41e472652326e9cc9ecc5d
[INFO] running `Command { std: "docker" "start" "-a" "6c1f346780d5c78be683c8c769d8ddb67e6e3c3c1a41e472652326e9cc9ecc5d", kill_on_drop: false }`
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[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling memchr v2.4.0
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[INFO] [stderr]    Compiling futures-macro v0.3.16
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[INFO] [stderr]    Compiling tokio v1.9.0
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[INFO] [stderr]     Checking reool v0.30.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `InitializationResult` is imported redundantly
[INFO] [stdout]   --> src/config/builder.rs:6:5
[INFO] [stdout]    |
[INFO] [stdout] 6  | use crate::error::InitializationResult;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 13 | use super::*;
[INFO] [stdout]    |     -------- the item `InitializationResult` is already imported here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `ActivationOrder` is imported redundantly
[INFO] [stdout]   --> src/config/builder.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 13 | use super::*;
[INFO] [stdout]    |     -------- the item `ActivationOrder` is already imported here
[INFO] [stdout] 14 |
[INFO] [stdout] 15 | pub use crate::activation_order::ActivationOrder;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `BackoffStrategy` is imported redundantly
[INFO] [stdout]   --> src/config/builder.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 13 | use super::*;
[INFO] [stdout]    |     -------- the item `BackoffStrategy` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 16 | pub use crate::backoff_strategy::BackoffStrategy;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Error` is imported redundantly
[INFO] [stdout]   --> src/config/builder.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 13 | use super::*;
[INFO] [stdout]    |     -------- the item `Error` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 17 | pub use crate::error::Error;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `future` is imported redundantly
[INFO] [stdout]  --> src/connection_factory.rs:4:14
[INFO] [stdout]   |
[INFO] [stdout] 4 | use future::{self, BoxFuture};
[INFO] [stdout]   |              ^^^^
[INFO] [stdout] 5 | use futures::prelude::*;
[INFO] [stdout]   |     ------------------- the item `future` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `ActivationOrder` is imported redundantly
[INFO] [stdout]  --> src/helpers.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::activation_order::ActivationOrder;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 4 | use crate::config::*;
[INFO] [stdout]   |     ---------------- the item `ActivationOrder` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Error` is imported redundantly
[INFO] [stdout]  --> src/helpers.rs:5:20
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::config::*;
[INFO] [stdout]   |     ---------------- the item `Error` is already imported here
[INFO] [stdout] 5 | use crate::error::{Error, InitializationResult};
[INFO] [stdout]   |                    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `InitializationResult` is imported redundantly
[INFO] [stdout]   --> src/config/builder.rs:6:5
[INFO] [stdout]    |
[INFO] [stdout] 6  | use crate::error::InitializationResult;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 13 | use super::*;
[INFO] [stdout]    |     -------- the item `InitializationResult` is already imported here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `ActivationOrder` is imported redundantly
[INFO] [stdout]   --> src/config/builder.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 13 | use super::*;
[INFO] [stdout]    |     -------- the item `ActivationOrder` is already imported here
[INFO] [stdout] 14 |
[INFO] [stdout] 15 | pub use crate::activation_order::ActivationOrder;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `BackoffStrategy` is imported redundantly
[INFO] [stdout]   --> src/config/builder.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 13 | use super::*;
[INFO] [stdout]    |     -------- the item `BackoffStrategy` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 16 | pub use crate::backoff_strategy::BackoffStrategy;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Error` is imported redundantly
[INFO] [stdout]   --> src/config/builder.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 13 | use super::*;
[INFO] [stdout]    |     -------- the item `Error` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 17 | pub use crate::error::Error;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `future` is imported redundantly
[INFO] [stdout]  --> src/connection_factory.rs:4:14
[INFO] [stdout]   |
[INFO] [stdout] 4 | use future::{self, BoxFuture};
[INFO] [stdout]   |              ^^^^
[INFO] [stdout] 5 | use futures::prelude::*;
[INFO] [stdout]   |     ------------------- the item `future` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `ActivationOrder` is imported redundantly
[INFO] [stdout]  --> src/helpers.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::activation_order::ActivationOrder;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 4 | use crate::config::*;
[INFO] [stdout]   |     ---------------- the item `ActivationOrder` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Error` is imported redundantly
[INFO] [stdout]  --> src/helpers.rs:5:20
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::config::*;
[INFO] [stdout]   |     ---------------- the item `Error` is already imported here
[INFO] [stdout] 5 | use crate::error::{Error, InitializationResult};
[INFO] [stdout]   |                    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Duration` is imported redundantly
[INFO] [stdout]   --> src/pools/pool_internal/test.rs:6:5
[INFO] [stdout]    |
[INFO] [stdout] 6  | use std::time::Duration;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 20 | use crate::*;
[INFO] [stdout]    |     -------- the item `Duration` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `BoxFuture` is imported redundantly
[INFO] [stdout]   --> src/pools/pool_internal/test.rs:8:5
[INFO] [stdout]    |
[INFO] [stdout] 8  | use future::BoxFuture;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 20 | use crate::*;
[INFO] [stdout]    |     -------- the item `BoxFuture` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `CheckoutErrorKind` is imported redundantly
[INFO] [stdout]   --> src/pools/pool_internal/test.rs:15:20
[INFO] [stdout]    |
[INFO] [stdout] 15 | use crate::error::{CheckoutErrorKind, Error};
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 20 | use crate::*;
[INFO] [stdout]    |     -------- the item `CheckoutErrorKind` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `pretty_env_logger` is imported redundantly
[INFO] [stdout]  --> examples/too_many_pings.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use pretty_env_logger;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^ the item `pretty_env_logger` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `pretty_env_logger` is imported redundantly
[INFO] [stdout]  --> examples/write_read.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use pretty_env_logger;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^ the item `pretty_env_logger` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `AsyncCommands` is imported redundantly
[INFO] [stdout]  --> examples/write_read.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use reool::AsyncCommands;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 9 | use reool::*;
[INFO] [stdout]   |     -------- the item `AsyncCommands` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `pretty_env_logger` is imported redundantly
[INFO] [stdout]  --> examples/connect.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use pretty_env_logger;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^ the item `pretty_env_logger` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `pretty_env_logger` is imported redundantly
[INFO] [stdout]  --> examples/many_pings_unbounded.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use pretty_env_logger;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^ the item `pretty_env_logger` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[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 13.61s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: redis v0.21.0
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 6`
[INFO] running `Command { std: "docker" "inspect" "6c1f346780d5c78be683c8c769d8ddb67e6e3c3c1a41e472652326e9cc9ecc5d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6c1f346780d5c78be683c8c769d8ddb67e6e3c3c1a41e472652326e9cc9ecc5d", kill_on_drop: false }`
[INFO] [stdout] 6c1f346780d5c78be683c8c769d8ddb67e6e3c3c1a41e472652326e9cc9ecc5d