[INFO] fetching crate par-iter 2.0.0...
[INFO] checking par-iter-2.0.0 against try#b6bca0d7327839b5e3f7a7779947cb9113d08917+rustflags=-Zstrict-projection-item-bounds for 150662-leaf
[INFO] extracting crate par-iter 2.0.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate par-iter 2.0.0
[INFO] finished tweaking crates.io crate par-iter 2.0.0
[INFO] tweaked toml for crates.io crate par-iter 2.0.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate par-iter 2.0.0 on toolchain b6bca0d7327839b5e3f7a7779947cb9113d08917
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b6bca0d7327839b5e3f7a7779947cb9113d08917" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b6bca0d7327839b5e3f7a7779947cb9113d08917" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 19 packages to latest compatible versions
[INFO] [stderr]       Adding rand v0.8.5 (available: v0.10.0)
[INFO] [stderr]       Adding rand_xorshift v0.3.0 (available: v0.5.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b6bca0d7327839b5e3f7a7779947cb9113d08917" "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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+b6bca0d7327839b5e3f7a7779947cb9113d08917" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b9f3d5f85b2b56a7ce2160ce86b2b6c9be83b7671d5b08d2e12168a7caebc750
[INFO] running `Command { std: "docker" "start" "-a" "b9f3d5f85b2b56a7ce2160ce86b2b6c9be83b7671d5b08d2e12168a7caebc750", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b9f3d5f85b2b56a7ce2160ce86b2b6c9be83b7671d5b08d2e12168a7caebc750", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b9f3d5f85b2b56a7ce2160ce86b2b6c9be83b7671d5b08d2e12168a7caebc750", kill_on_drop: false }`
[INFO] [stdout] b9f3d5f85b2b56a7ce2160ce86b2b6c9be83b7671d5b08d2e12168a7caebc750
[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 -Zstrict-projection-item-bounds" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+b6bca0d7327839b5e3f7a7779947cb9113d08917" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9bfb8d075841d2d5f097dce5e894d9cc05d91d8479487089d805820ef858d4ce
[INFO] running `Command { std: "docker" "start" "-a" "9bfb8d075841d2d5f097dce5e894d9cc05d91d8479487089d805820ef858d4ce", kill_on_drop: false }`
[INFO] [stderr]     Checking chili v0.2.1
[INFO] [stderr]     Checking rand_xorshift v0.3.0
[INFO] [stderr]     Checking par-core v2.0.0
[INFO] [stderr]     Checking par-iter v2.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]     --> src/iter/test.rs:1557:23
[INFO] [stdout]      |
[INFO] [stdout] 1557 |         .flat_map(|i| (0..i))
[INFO] [stdout]      |                       ^    ^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout] 1557 -         .flat_map(|i| (0..i))
[INFO] [stdout] 1557 +         .flat_map(|i| 0..i )
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]     --> src/iter/test.rs:1561:23
[INFO] [stdout]      |
[INFO] [stdout] 1561 |         .flat_map(|i| (0..i))
[INFO] [stdout]      |                       ^    ^
[INFO] [stdout]      |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout] 1561 -         .flat_map(|i| (0..i))
[INFO] [stdout] 1561 +         .flat_map(|i| 0..i )
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: `&'a T` cannot be sent between threads safely
[INFO] [stdout]    --> src/iter/mod.rs:711:32
[INFO] [stdout]     |
[INFO] [stdout] 711 |         Self: ParallelIterator<Item = &'a T>,
[INFO] [stdout]     |                                ^^^^^^^^^^^^ `&'a T` cannot be sent between threads safely
[INFO] [stdout]     |
[INFO] [stdout]     = note: required for `&'a T` to implement `Send`
[INFO] [stdout] help: consider further restricting type parameter `T` with trait `Sync`
[INFO] [stdout]     |
[INFO] [stdout] 710 |         T: 'a + Clone + Send + std::marker::Sync,
[INFO] [stdout]     |                              +++++++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: `&'a T` cannot be sent between threads safely
[INFO] [stdout]    --> src/iter/mod.rs:740:32
[INFO] [stdout]     |
[INFO] [stdout] 740 |         Self: ParallelIterator<Item = &'a T>,
[INFO] [stdout]     |                                ^^^^^^^^^^^^ `&'a T` cannot be sent between threads safely
[INFO] [stdout]     |
[INFO] [stdout]     = note: required for `&'a T` to implement `Send`
[INFO] [stdout] help: consider further restricting type parameter `T` with trait `Sync`
[INFO] [stdout]     |
[INFO] [stdout] 739 |         T: 'a + Copy + Send + std::marker::Sync,
[INFO] [stdout]     |                             +++++++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: `&'a T` cannot be sent between threads safely
[INFO] [stdout]    --> src/iter/mod.rs:711:32
[INFO] [stdout]     |
[INFO] [stdout] 711 |         Self: ParallelIterator<Item = &'a T>,
[INFO] [stdout]     |                                ^^^^^^^^^^^^ `&'a T` cannot be sent between threads safely
[INFO] [stdout]     |
[INFO] [stdout]     = note: required for `&'a T` to implement `Send`
[INFO] [stdout] help: consider further restricting type parameter `T` with trait `Sync`
[INFO] [stdout]     |
[INFO] [stdout] 710 |         T: 'a + Clone + Send + std::marker::Sync,
[INFO] [stdout]     |                              +++++++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: `&'a T` cannot be sent between threads safely
[INFO] [stdout]    --> src/iter/mod.rs:740:32
[INFO] [stdout]     |
[INFO] [stdout] 740 |         Self: ParallelIterator<Item = &'a T>,
[INFO] [stdout]     |                                ^^^^^^^^^^^^ `&'a T` cannot be sent between threads safely
[INFO] [stdout]     |
[INFO] [stdout]     = note: required for `&'a T` to implement `Send`
[INFO] [stdout] help: consider further restricting type parameter `T` with trait `Sync`
[INFO] [stdout]     |
[INFO] [stdout] 739 |         T: 'a + Copy + Send + std::marker::Sync,
[INFO] [stdout]     |                             +++++++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `par-iter` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `par-iter` (lib test) due to 2 previous errors; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "9bfb8d075841d2d5f097dce5e894d9cc05d91d8479487089d805820ef858d4ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9bfb8d075841d2d5f097dce5e894d9cc05d91d8479487089d805820ef858d4ce", kill_on_drop: false }`
[INFO] [stdout] 9bfb8d075841d2d5f097dce5e894d9cc05d91d8479487089d805820ef858d4ce