[INFO] fetching crate vec_map 0.8.2...
[INFO] checking vec_map-0.8.2 against try#cac44d9528e3bbbdaa1537d187bd489ccc5de18c for pr-91141
[INFO] extracting crate vec_map 0.8.2 into /workspace/builds/worker-88/source
[INFO] validating manifest of crates.io crate vec_map 0.8.2 on toolchain cac44d9528e3bbbdaa1537d187bd489ccc5de18c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate vec_map 0.8.2
[INFO] finished tweaking crates.io crate vec_map 0.8.2
[INFO] tweaked toml for crates.io crate vec_map 0.8.2 written to /workspace/builds/worker-88/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "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-88/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-88/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d6e04675613694678ec9685230966680186ee255cd0fa8c644c8f331c368684e
[INFO] running `Command { std: "docker" "start" "-a" "d6e04675613694678ec9685230966680186ee255cd0fa8c644c8f331c368684e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d6e04675613694678ec9685230966680186ee255cd0fa8c644c8f331c368684e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d6e04675613694678ec9685230966680186ee255cd0fa8c644c8f331c368684e", kill_on_drop: false }`
[INFO] [stdout] d6e04675613694678ec9685230966680186ee255cd0fa8c644c8f331c368684e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-88/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-88/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5d19397fdeaaa6b1042a6e483e28cacf6669999c8c8b5e6623a8785f439a582a
[INFO] running `Command { std: "docker" "start" "-a" "5d19397fdeaaa6b1042a6e483e28cacf6669999c8c8b5e6623a8785f439a582a", kill_on_drop: false }`
[INFO] [stderr]     Checking vec_map v0.8.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]     --> src/lib.rs:1010:34
[INFO] [stdout]      |
[INFO] [stdout] 1010 |     fn next(&mut self) -> Option<(&'a V)> { self.iter.next().map(|e| e.1) }
[INFO] [stdout]      |                                  ^     ^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout] 1010 -     fn next(&mut self) -> Option<(&'a V)> { self.iter.next().map(|e| e.1) }
[INFO] [stdout] 1010 +     fn next(&mut self) -> Option<&'a V> { self.iter.next().map(|e| e.1) }
[INFO] [stdout]      | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]     --> src/lib.rs:1017:39
[INFO] [stdout]      |
[INFO] [stdout] 1017 |     fn next_back(&mut self) -> Option<(&'a V)> { self.iter.next_back().map(|e| e.1) }
[INFO] [stdout]      |                                       ^     ^
[INFO] [stdout]      |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout] 1017 -     fn next_back(&mut self) -> Option<(&'a V)> { self.iter.next_back().map(|e| e.1) }
[INFO] [stdout] 1017 +     fn next_back(&mut self) -> Option<&'a V> { self.iter.next_back().map(|e| e.1) }
[INFO] [stdout]      | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]     --> src/lib.rs:1023:34
[INFO] [stdout]      |
[INFO] [stdout] 1023 |     fn next(&mut self) -> Option<(&'a mut V)> { self.iter_mut.next().map(|e| e.1) }
[INFO] [stdout]      |                                  ^         ^
[INFO] [stdout]      |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout] 1023 -     fn next(&mut self) -> Option<(&'a mut V)> { self.iter_mut.next().map(|e| e.1) }
[INFO] [stdout] 1023 +     fn next(&mut self) -> Option<&'a mut V> { self.iter_mut.next().map(|e| e.1) }
[INFO] [stdout]      | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]     --> src/lib.rs:1010:34
[INFO] [stdout]      |
[INFO] [stdout] 1010 |     fn next(&mut self) -> Option<(&'a V)> { self.iter.next().map(|e| e.1) }
[INFO] [stdout]      |                                  ^     ^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout] 1010 -     fn next(&mut self) -> Option<(&'a V)> { self.iter.next().map(|e| e.1) }
[INFO] [stdout] 1010 +     fn next(&mut self) -> Option<&'a V> { self.iter.next().map(|e| e.1) }
[INFO] [stdout]      | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]     --> src/lib.rs:1017:39
[INFO] [stdout]      |
[INFO] [stdout] 1017 |     fn next_back(&mut self) -> Option<(&'a V)> { self.iter.next_back().map(|e| e.1) }
[INFO] [stdout]      |                                       ^     ^
[INFO] [stdout]      |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout] 1017 -     fn next_back(&mut self) -> Option<(&'a V)> { self.iter.next_back().map(|e| e.1) }
[INFO] [stdout] 1017 +     fn next_back(&mut self) -> Option<&'a V> { self.iter.next_back().map(|e| e.1) }
[INFO] [stdout]      | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]     --> src/lib.rs:1023:34
[INFO] [stdout]      |
[INFO] [stdout] 1023 |     fn next(&mut self) -> Option<(&'a mut V)> { self.iter_mut.next().map(|e| e.1) }
[INFO] [stdout]      |                                  ^         ^
[INFO] [stdout]      |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout] 1023 -     fn next(&mut self) -> Option<(&'a mut V)> { self.iter_mut.next().map(|e| e.1) }
[INFO] [stdout] 1023 +     fn next(&mut self) -> Option<&'a mut V> { self.iter_mut.next().map(|e| e.1) }
[INFO] [stdout]      | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.35s
[INFO] running `Command { std: "docker" "inspect" "5d19397fdeaaa6b1042a6e483e28cacf6669999c8c8b5e6623a8785f439a582a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5d19397fdeaaa6b1042a6e483e28cacf6669999c8c8b5e6623a8785f439a582a", kill_on_drop: false }`
[INFO] [stdout] 5d19397fdeaaa6b1042a6e483e28cacf6669999c8c8b5e6623a8785f439a582a