[INFO] fetching crate hash-rings 1.1.0...
[INFO] checking hash-rings-1.1.0 against try#de0e80659cee4f27282e60d63bbb8c5271a0d147 for pr-129392
[INFO] extracting crate hash-rings 1.1.0 into /workspace/builds/worker-5-tc2/source
[INFO] validating manifest of crates.io crate hash-rings 1.1.0 on toolchain de0e80659cee4f27282e60d63bbb8c5271a0d147
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+de0e80659cee4f27282e60d63bbb8c5271a0d147" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate hash-rings 1.1.0
[INFO] finished tweaking crates.io crate hash-rings 1.1.0
[INFO] tweaked toml for crates.io crate hash-rings 1.1.0 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate crates.io crate hash-rings 1.1.0 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" "+de0e80659cee4f27282e60d63bbb8c5271a0d147" "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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+de0e80659cee4f27282e60d63bbb8c5271a0d147" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6bff52cc7db83f83564020a4c357d920754433f6224e78162e8820cc6758bfb1
[INFO] running `Command { std: "docker" "start" "-a" "6bff52cc7db83f83564020a4c357d920754433f6224e78162e8820cc6758bfb1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6bff52cc7db83f83564020a4c357d920754433f6224e78162e8820cc6758bfb1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6bff52cc7db83f83564020a4c357d920754433f6224e78162e8820cc6758bfb1", kill_on_drop: false }`
[INFO] [stdout] 6bff52cc7db83f83564020a4c357d920754433f6224e78162e8820cc6758bfb1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+de0e80659cee4f27282e60d63bbb8c5271a0d147" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f3860d30acb8a6a4dfc9e46a12cb6b71ae6a723a3b8be4f09d4cab0ef129fc0e
[INFO] running `Command { std: "docker" "start" "-a" "f3860d30acb8a6a4dfc9e46a12cb6b71ae6a723a3b8be4f09d4cab0ef129fc0e", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v0.1.6
[INFO] [stderr]     Checking hamming v0.1.3
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]     Checking smallvec v0.6.10
[INFO] [stderr]     Checking primal-estimate v0.2.1
[INFO] [stderr]     Checking siphasher v0.2.3
[INFO] [stderr]     Checking primal-bit v0.2.4
[INFO] [stderr]     Checking primal-sieve v0.2.9
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking primal-check v0.2.3
[INFO] [stderr]     Checking primal v0.2.3
[INFO] [stderr]     Checking hash-rings v1.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/maglev.rs:207:17
[INFO] [stdout]     |
[INFO] [stdout] 207 |     type Item = (&'a T);
[INFO] [stdout]     |                 ^     ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 207 -     type Item = (&'a T);
[INFO] [stdout] 207 +     type Item = &'a T;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/mpc.rs:269:17
[INFO] [stdout]     |
[INFO] [stdout] 269 |     type Item = (&'a T);
[INFO] [stdout]     |                 ^     ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 269 -     type Item = (&'a T);
[INFO] [stdout] 269 +     type Item = &'a T;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/maglev.rs:207:17
[INFO] [stdout]     |
[INFO] [stdout] 207 |     type Item = (&'a T);
[INFO] [stdout]     |                 ^     ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 207 -     type Item = (&'a T);
[INFO] [stdout] 207 +     type Item = &'a T;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/mpc.rs:269:17
[INFO] [stdout]     |
[INFO] [stdout] 269 |     type Item = (&'a T);
[INFO] [stdout]     |                 ^     ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 269 -     type Item = (&'a T);
[INFO] [stdout] 269 +     type Item = &'a T;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/consistent.rs:734:13
[INFO] [stdout]     |
[INFO] [stdout] 734 |         let mut client: Client<'_, u32, u32, BuildDefaultHasher> = Client::default();
[INFO] [stdout]     |             ----^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/rendezvous.rs:689:13
[INFO] [stdout]     |
[INFO] [stdout] 689 |         let mut client: Client<'_, u32, u32, BuildDefaultHasher> = Client::default();
[INFO] [stdout]     |             ----^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/weighted_rendezvous.rs:675:13
[INFO] [stdout]     |
[INFO] [stdout] 675 |         let mut client: Client<'_, u32, u32, BuildDefaultHasher> = Client::default();
[INFO] [stdout]     |             ----^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.23s
[INFO] running `Command { std: "docker" "inspect" "f3860d30acb8a6a4dfc9e46a12cb6b71ae6a723a3b8be4f09d4cab0ef129fc0e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f3860d30acb8a6a4dfc9e46a12cb6b71ae6a723a3b8be4f09d4cab0ef129fc0e", kill_on_drop: false }`
[INFO] [stdout] f3860d30acb8a6a4dfc9e46a12cb6b71ae6a723a3b8be4f09d4cab0ef129fc0e