[INFO] crate core_extensions 0.1.11 is already in cache
[INFO] checking core_extensions-0.1.11 against try#7cb06892a23b4da510686618c8730f0b2e8bd952 for pr-66963
[INFO] extracting crate core_extensions 0.1.11 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate core_extensions 0.1.11 on toolchain 7cb06892a23b4da510686618c8730f0b2e8bd952
[INFO] running `"/workspace/cargo-home/bin/cargo" "+7cb06892a23b4da510686618c8730f0b2e8bd952" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate core_extensions 0.1.11
[INFO] finished tweaking crates.io crate core_extensions 0.1.11
[INFO] tweaked toml for crates.io crate core_extensions 0.1.11 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+7cb06892a23b4da510686618c8730f0b2e8bd952" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+7cb06892a23b4da510686618c8730f0b2e8bd952" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+7cb06892a23b4da510686618c8730f0b2e8bd952" "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] 7d33b9e3f79cf6d1f7731633aa467128068992ee91facdb0db3e0156b46e7872
[INFO] running `"docker" "start" "-a" "7d33b9e3f79cf6d1f7731633aa467128068992ee91facdb0db3e0156b46e7872"`
[INFO] [stderr]    Compiling serde v1.0.103
[INFO] [stderr]    Compiling core_extensions v0.1.11 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling rand_derive v0.3.1
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src_core_extensions/callable.rs:390:26
[INFO] [stderr]     |
[INFO] [stderr] 390 |               type Returns=($($ret_ty)*);
[INFO] [stderr]     |                            ^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] ...
[INFO] [stderr] 446 | /         callable_impl! {
[INFO] [stderr] 447 | |             fn call_ref['a,T,U](this:WhatRef<T> => what:U )->bool
[INFO] [stderr] 448 | |             where [ T:PartialEq<U>, ]
[INFO] [stderr] 449 | |             {
[INFO] [stderr] 450 | |                 this.0==what
[INFO] [stderr] 451 | |             }
[INFO] [stderr] 452 | |         }
[INFO] [stderr]     | |_________- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src_core_extensions/callable.rs:346:26
[INFO] [stderr]     |
[INFO] [stderr] 346 |               type Returns=($($ret_ty)*);
[INFO] [stderr]     |                            ^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] ...
[INFO] [stderr] 466 | /         callable_impl! {
[INFO] [stderr] 467 | |             fn call_mut(this:WhatMut)->usize{
[INFO] [stderr] 468 | |                 this.state+=1;
[INFO] [stderr] 469 | |                 this.state
[INFO] [stderr] 470 | |             }
[INFO] [stderr] 471 | |         }
[INFO] [stderr]     | |_________- in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src_core_extensions/callable.rs:315:26
[INFO] [stderr]     |
[INFO] [stderr] 315 |               type Returns=($($ret_ty)*);
[INFO] [stderr]     |                            ^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] ...
[INFO] [stderr] 483 | /         callable_impl! {
[INFO] [stderr] 484 | |             fn call_into[T,U](this:WhatInto<T> => _a:VariantPhantom<U>)->U
[INFO] [stderr] 485 | |             where [ T:Into<U> ]
[INFO] [stderr] 486 | |             {
[INFO] [stderr] 487 | |                 this.0.into()
[INFO] [stderr] 488 | |             }
[INFO] [stderr] 489 | |         }
[INFO] [stderr]     | |_________- in this macro invocation
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.90s
[INFO] running `"docker" "inspect" "7d33b9e3f79cf6d1f7731633aa467128068992ee91facdb0db3e0156b46e7872"`
[INFO] running `"docker" "rm" "-f" "7d33b9e3f79cf6d1f7731633aa467128068992ee91facdb0db3e0156b46e7872"`
[INFO] [stdout] 7d33b9e3f79cf6d1f7731633aa467128068992ee91facdb0db3e0156b46e7872