[INFO] fetching crate owning_ref 0.4.1...
[INFO] checking owning_ref-0.4.1 against try#4a23c45c7893f1416456144e3883cc48ea91722e for pr-82322
[INFO] extracting crate owning_ref 0.4.1 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate owning_ref 0.4.1 on toolchain 4a23c45c7893f1416456144e3883cc48ea91722e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4a23c45c7893f1416456144e3883cc48ea91722e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate owning_ref 0.4.1
[INFO] finished tweaking crates.io crate owning_ref 0.4.1
[INFO] tweaked toml for crates.io crate owning_ref 0.4.1 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4a23c45c7893f1416456144e3883cc48ea91722e" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4a23c45c7893f1416456144e3883cc48ea91722e" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+4a23c45c7893f1416456144e3883cc48ea91722e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e35f0f885aaa2bc9d374c13cdd24869ae03e1a499c4fe0b8cd52b46f9311999e
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "e35f0f885aaa2bc9d374c13cdd24869ae03e1a499c4fe0b8cd52b46f9311999e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e35f0f885aaa2bc9d374c13cdd24869ae03e1a499c4fe0b8cd52b46f9311999e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e35f0f885aaa2bc9d374c13cdd24869ae03e1a499c4fe0b8cd52b46f9311999e", kill_on_drop: false }`
[INFO] [stdout] e35f0f885aaa2bc9d374c13cdd24869ae03e1a499c4fe0b8cd52b46f9311999e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+4a23c45c7893f1416456144e3883cc48ea91722e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 86558d39e909753a8c71e027b1e47d2824077c4352f645a6af3e98ffa9a0edb0
[INFO] running `Command { std: "docker" "start" "-a" "86558d39e909753a8c71e027b1e47d2824077c4352f645a6af3e98ffa9a0edb0", kill_on_drop: false }`
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]     Checking owning_ref v0.4.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]     --> src/lib.rs:1074:28
[INFO] [stdout]      |
[INFO] [stdout] 1074 |     where O: Send, for<'a> (&'a T): Send {}
[INFO] [stdout]      |                            ^^^^^^^ help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]     --> src/lib.rs:1076:28
[INFO] [stdout]      |
[INFO] [stdout] 1076 |     where O: Sync, for<'a> (&'a T): Sync {}
[INFO] [stdout]      |                            ^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]     --> src/lib.rs:1079:28
[INFO] [stdout]      |
[INFO] [stdout] 1079 |     where O: Send, for<'a> (&'a mut T): Send {}
[INFO] [stdout]      |                            ^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]     --> src/lib.rs:1081:28
[INFO] [stdout]      |
[INFO] [stdout] 1081 |     where O: Sync, for<'a> (&'a mut T): Sync {}
[INFO] [stdout]      |                            ^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]     --> src/lib.rs:1074:28
[INFO] [stdout]      |
[INFO] [stdout] 1074 |     where O: Send, for<'a> (&'a T): Send {}
[INFO] [stdout]      |                            ^^^^^^^ help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]     --> src/lib.rs:1076:28
[INFO] [stdout]      |
[INFO] [stdout] 1076 |     where O: Sync, for<'a> (&'a T): Sync {}
[INFO] [stdout]      |                            ^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]     --> src/lib.rs:1079:28
[INFO] [stdout]      |
[INFO] [stdout] 1079 |     where O: Send, for<'a> (&'a mut T): Send {}
[INFO] [stdout]      |                            ^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]     --> src/lib.rs:1081:28
[INFO] [stdout]      |
[INFO] [stdout] 1081 |     where O: Sync, for<'a> (&'a mut T): Sync {}
[INFO] [stdout]      |                            ^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.86s
[INFO] running `Command { std: "docker" "inspect" "86558d39e909753a8c71e027b1e47d2824077c4352f645a6af3e98ffa9a0edb0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "86558d39e909753a8c71e027b1e47d2824077c4352f645a6af3e98ffa9a0edb0", kill_on_drop: false }`
[INFO] [stdout] 86558d39e909753a8c71e027b1e47d2824077c4352f645a6af3e98ffa9a0edb0