[INFO] fetching crate rustfmt-nightly 1.4.11...
[INFO] checking rustfmt-nightly-1.4.11 against master#73f76b74efcaf21bd5424d87c66cd6ed7fe5c7de for pr-68325
[INFO] extracting crate rustfmt-nightly 1.4.11 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate rustfmt-nightly 1.4.11 on toolchain 73f76b74efcaf21bd5424d87c66cd6ed7fe5c7de
[INFO] running `"/workspace/cargo-home/bin/cargo" "+73f76b74efcaf21bd5424d87c66cd6ed7fe5c7de" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate rustfmt-nightly 1.4.11
[INFO] finished tweaking crates.io crate rustfmt-nightly 1.4.11
[INFO] tweaked toml for crates.io crate rustfmt-nightly 1.4.11 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate crates.io crate rustfmt-nightly 1.4.11 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+73f76b74efcaf21bd5424d87c66cd6ed7fe5c7de" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+73f76b74efcaf21bd5424d87c66cd6ed7fe5c7de" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 56d9f5a25c265615a7fca736fd9ed7cf07b3070f8a2b1bafbe1774d3dbb585b2
[INFO] running `"docker" "start" "-a" "56d9f5a25c265615a7fca736fd9ed7cf07b3070f8a2b1bafbe1774d3dbb585b2"`
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]     Checking smallvec v0.6.10
[INFO] [stderr]    Compiling rustfmt-nightly v1.4.11 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking lock_api v0.3.1
[INFO] [stderr]    Compiling itertools v0.8.0
[INFO] [stderr]     Checking jobserver v0.1.17
[INFO] [stderr]     Checking env_logger v0.6.2
[INFO] [stderr]     Checking term v0.6.1
[INFO] [stderr]     Checking rustc-ap-serialize v610.0.0
[INFO] [stderr]     Checking rustc-ap-rustc_index v610.0.0
[INFO] [stderr]    Compiling synstructure v0.12.1
[INFO] [stderr]    Compiling proc-macro-error v0.2.6
[INFO] [stderr]    Compiling serde_derive v1.0.101
[INFO] [stderr]    Compiling rustc-ap-rustc_macros v610.0.0
[INFO] [stderr]    Compiling structopt-derive v0.3.3
[INFO] [stderr]    Compiling failure_derive v0.1.6
[INFO] [stderr]    Compiling rustfmt-config_proc_macro v0.2.0
[INFO] [stderr]    Compiling derive-new v0.5.8
[INFO] [stderr]     Checking failure v0.1.6
[INFO] [stderr]     Checking structopt v0.3.3
[INFO] [stderr]    Compiling serde v1.0.101
[INFO] [stderr]     Checking semver v0.9.0
[INFO] [stderr]     Checking serde_json v1.0.41
[INFO] [stderr]     Checking toml v0.5.3
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]     Checking cargo_metadata v0.8.2
[INFO] [stderr]    Compiling memoffset v0.5.1
[INFO] [stderr]    Compiling parking_lot_core v0.6.2
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]     Checking crossbeam-epoch v0.7.2
[INFO] [stderr]     Checking crossbeam-deque v0.7.1
[INFO] [stderr]     Checking rustc-rayon-core v0.3.0
[INFO] [stderr]     Checking rustc-rayon v0.3.0
[INFO] [stderr]     Checking rustc-ap-rustc_data_structures v610.0.0
[INFO] [stderr]     Checking rustc-ap-arena v610.0.0
[INFO] [stderr]     Checking rustc-ap-syntax_pos v610.0.0
[INFO] [stderr]     Checking rustc-ap-rustc_errors v610.0.0
[INFO] [stderr]     Checking rustc-ap-rustc_target v610.0.0
[INFO] [stderr]     Checking rustc-ap-syntax v610.0.0
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/expr.rs:1151:5
[INFO] [stderr]      |
[INFO] [stderr] 1151 | /     (block.stmts.len() == 1
[INFO] [stderr] 1152 | |         && stmt_is_expr(&block.stmts[0])
[INFO] [stderr] 1153 | |         && !block_contains_comment(block, source_map)
[INFO] [stderr] 1154 | |         && attrs.map_or(true, |a| a.is_empty()))
[INFO] [stderr]      | |________________________________________________^
[INFO] [stderr]      |
[INFO] [stderr]      = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]      |
[INFO] [stderr] 1151 |     block.stmts.len() == 1
[INFO] [stderr] 1152 |         && stmt_is_expr(&block.stmts[0])
[INFO] [stderr] 1153 |         && !block_contains_comment(block, source_map)
[INFO] [stderr] 1154 |         && attrs.map_or(true, |a| a.is_empty())
[INFO] [stderr]      |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]     --> src/items.rs:2536:13
[INFO] [stderr]      |
[INFO] [stderr] 2536 | ) -> Option<((usize, usize, Indent))> {
[INFO] [stderr]      |             ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/expr.rs:1151:5
[INFO] [stderr]      |
[INFO] [stderr] 1151 | /     (block.stmts.len() == 1
[INFO] [stderr] 1152 | |         && stmt_is_expr(&block.stmts[0])
[INFO] [stderr] 1153 | |         && !block_contains_comment(block, source_map)
[INFO] [stderr] 1154 | |         && attrs.map_or(true, |a| a.is_empty()))
[INFO] [stderr]      | |________________________________________________^
[INFO] [stderr]      |
[INFO] [stderr]      = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]      |
[INFO] [stderr] 1151 |     block.stmts.len() == 1
[INFO] [stderr] 1152 |         && stmt_is_expr(&block.stmts[0])
[INFO] [stderr] 1153 |         && !block_contains_comment(block, source_map)
[INFO] [stderr] 1154 |         && attrs.map_or(true, |a| a.is_empty())
[INFO] [stderr]      |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]     --> src/items.rs:2536:13
[INFO] [stderr]      |
[INFO] [stderr] 2536 | ) -> Option<((usize, usize, Indent))> {
[INFO] [stderr]      |             ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 49s
[INFO] running `"docker" "inspect" "56d9f5a25c265615a7fca736fd9ed7cf07b3070f8a2b1bafbe1774d3dbb585b2"`
[INFO] running `"docker" "rm" "-f" "56d9f5a25c265615a7fca736fd9ed7cf07b3070f8a2b1bafbe1774d3dbb585b2"`
[INFO] [stdout] 56d9f5a25c265615a7fca736fd9ed7cf07b3070f8a2b1bafbe1774d3dbb585b2