[INFO] crate core_extensions 0.1.13 is already in cache
[INFO] checking core_extensions-0.1.13 against try#f149601db42efe10ece8b284ab681fd4a6fcb89c for pr-68766
[INFO] extracting crate core_extensions 0.1.13 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate core_extensions 0.1.13 on toolchain f149601db42efe10ece8b284ab681fd4a6fcb89c
[INFO] running `"/workspace/cargo-home/bin/cargo" "+f149601db42efe10ece8b284ab681fd4a6fcb89c" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate core_extensions 0.1.13
[INFO] finished tweaking crates.io crate core_extensions 0.1.13
[INFO] tweaked toml for crates.io crate core_extensions 0.1.13 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+f149601db42efe10ece8b284ab681fd4a6fcb89c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+f149601db42efe10ece8b284ab681fd4a6fcb89c" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "+f149601db42efe10ece8b284ab681fd4a6fcb89c" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] e73a6033d6c96b30e0266441245876660cb6eabed1be6d183530d3a7b9c24071
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "e73a6033d6c96b30e0266441245876660cb6eabed1be6d183530d3a7b9c24071"`
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]    Compiling core_extensions v0.1.13 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling rand_derive v0.3.1
[INFO] [stderr] warning: unused import: `std_::panic`
[INFO] [stderr]  --> src_core_extensions/option_result_ext/result_like.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std_::panic;
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[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] 448 | /         callable_impl! {
[INFO] [stderr] 449 | |             fn call_ref['a,T,U](this:WhatRef<T> => what:U )->bool
[INFO] [stderr] 450 | |             where [ T:PartialEq<U>, ]
[INFO] [stderr] 451 | |             {
[INFO] [stderr] 452 | |                 this.0==what
[INFO] [stderr] 453 | |             }
[INFO] [stderr] 454 | |         }
[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] 468 | /         callable_impl! {
[INFO] [stderr] 469 | |             fn call_mut(this:WhatMut)->usize{
[INFO] [stderr] 470 | |                 this.state+=1;
[INFO] [stderr] 471 | |                 this.state
[INFO] [stderr] 472 | |             }
[INFO] [stderr] 473 | |         }
[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] 485 | /         callable_impl! {
[INFO] [stderr] 486 | |             fn call_into[T,U](this:WhatInto<T> => _a:VariantPhantom<U>)->U
[INFO] [stderr] 487 | |             where [ T:Into<U> ]
[INFO] [stderr] 488 | |             {
[INFO] [stderr] 489 | |                 this.0.into()
[INFO] [stderr] 490 | |             }
[INFO] [stderr] 491 | |         }
[INFO] [stderr]     | |_________- in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std_::panic`
[INFO] [stderr]  --> src_core_extensions/option_result_ext/result_like.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std_::panic;
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.89s
[INFO] running `"docker" "inspect" "e73a6033d6c96b30e0266441245876660cb6eabed1be6d183530d3a7b9c24071"`
[INFO] running `"docker" "rm" "-f" "e73a6033d6c96b30e0266441245876660cb6eabed1be6d183530d3a7b9c24071"`
[INFO] [stdout] e73a6033d6c96b30e0266441245876660cb6eabed1be6d183530d3a7b9c24071