Dec 12 09:32:07.968 INFO checking quickercheck-0.2.0 against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 12 09:32:07.968 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-0/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/pr-56677/master#3a75e80557a103497cffbcab395a2f37061a77ea:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +3a75e80557a103497cffbcab395a2f37061a77ea-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 12 09:32:08.211 INFO [stdout] 45cb501e1d60efcd05d9a6469e8de5ba83243889c0f9e95e44d03ec9d44ff7b3
Dec 12 09:32:08.214 INFO running `"docker" "start" "-a" "45cb501e1d60efcd05d9a6469e8de5ba83243889c0f9e95e44d03ec9d44ff7b3"`
Dec 12 09:32:08.678 INFO [stderr] usermod: no changes
Dec 12 09:32:08.754 INFO [stderr]     Checking quickercheck v0.2.0 (/source)
Dec 12 09:32:11.311 INFO [stderr] warning: unnecessary parentheses around function argument
Dec 12 09:32:11.311 INFO [stderr]    --> src/arbitrary.rs:108:48
Dec 12 09:32:11.311 INFO [stderr]     |
Dec 12 09:32:11.311 INFO [stderr] 108 |                       FromIteratorGenerator::new(($($placeholder::arbitrary()),*))
Dec 12 09:32:11.311 INFO [stderr]     |                                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 12 09:32:11.311 INFO [stderr] ...
Dec 12 09:32:11.311 INFO [stderr] 119 | / generic_impls! {
Dec 12 09:32:11.311 INFO [stderr] 120 | |     Vec<T>,
Dec 12 09:32:11.311 INFO [stderr] 121 | |     BTreeMap<K, V>,
Dec 12 09:32:11.311 INFO [stderr] 122 | |     BTreeSet<T>,
Dec 12 09:32:11.311 INFO [stderr] ...   |
Dec 12 09:32:11.311 INFO [stderr] 127 | |     VecDeque<T>
Dec 12 09:32:11.311 INFO [stderr] 128 | | }
Dec 12 09:32:11.311 INFO [stderr]     | |_- in this macro invocation
Dec 12 09:32:11.311 INFO [stderr]     |
Dec 12 09:32:11.311 INFO [stderr]     = note: #[warn(unused_parens)] on by default
Dec 12 09:32:11.311 INFO [stderr] 
Dec 12 09:32:11.311 INFO [stderr] warning: unnecessary parentheses around function argument
Dec 12 09:32:11.311 INFO [stderr]    --> src/arbitrary.rs:112:47
Dec 12 09:32:11.311 INFO [stderr]     |
Dec 12 09:32:11.311 INFO [stderr] 112 |                       FromIteratorShrinker::new(($($placeholder::shrink()),*))
Dec 12 09:32:11.311 INFO [stderr]     |                                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 12 09:32:11.311 INFO [stderr] ...
Dec 12 09:32:11.311 INFO [stderr] 119 | / generic_impls! {
Dec 12 09:32:11.311 INFO [stderr] 120 | |     Vec<T>,
Dec 12 09:32:11.311 INFO [stderr] 121 | |     BTreeMap<K, V>,
Dec 12 09:32:11.311 INFO [stderr] 122 | |     BTreeSet<T>,
Dec 12 09:32:11.311 INFO [stderr] ...   |
Dec 12 09:32:11.311 INFO [stderr] 127 | |     VecDeque<T>
Dec 12 09:32:11.311 INFO [stderr] 128 | | }
Dec 12 09:32:11.311 INFO [stderr]     | |_- in this macro invocation
Dec 12 09:32:11.311 INFO [stderr] 
Dec 12 09:32:11.311 INFO [stderr] warning: unnecessary parentheses around function argument
Dec 12 09:32:11.311 INFO [stderr]    --> src/arbitrary.rs:108:48
Dec 12 09:32:11.311 INFO [stderr]     |
Dec 12 09:32:11.311 INFO [stderr] 108 |                       FromIteratorGenerator::new(($($placeholder::arbitrary()),*))
Dec 12 09:32:11.311 INFO [stderr]     |                                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 12 09:32:11.311 INFO [stderr] ...
Dec 12 09:32:11.311 INFO [stderr] 119 | / generic_impls! {
Dec 12 09:32:11.311 INFO [stderr] 120 | |     Vec<T>,
Dec 12 09:32:11.311 INFO [stderr] 121 | |     BTreeMap<K, V>,
Dec 12 09:32:11.311 INFO [stderr] 122 | |     BTreeSet<T>,
Dec 12 09:32:11.312 INFO [stderr] ...   |
Dec 12 09:32:11.312 INFO [stderr] 127 | |     VecDeque<T>
Dec 12 09:32:11.312 INFO [stderr] 128 | | }
Dec 12 09:32:11.312 INFO [stderr]     | |_- in this macro invocation
Dec 12 09:32:11.312 INFO [stderr] 
Dec 12 09:32:11.440 INFO [stderr] warning: unnecessary parentheses around function argument
Dec 12 09:32:11.440 INFO [stderr]    --> src/arbitrary.rs:108:48
Dec 12 09:32:11.440 INFO [stderr]     |
Dec 12 09:32:11.440 INFO [stderr] 108 |                       FromIteratorGenerator::new(($($placeholder::arbitrary()),*))
Dec 12 09:32:11.440 INFO [stderr]     |                                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 12 09:32:11.440 INFO [stderr] ...
Dec 12 09:32:11.440 INFO [stderr] 119 | / generic_impls! {
Dec 12 09:32:11.440 INFO [stderr] 120 | |     Vec<T>,
Dec 12 09:32:11.440 INFO [stderr] 121 | |     BTreeMap<K, V>,
Dec 12 09:32:11.440 INFO [stderr] 122 | |     BTreeSet<T>,
Dec 12 09:32:11.440 INFO [stderr] ...   |
Dec 12 09:32:11.440 INFO [stderr] 127 | |     VecDeque<T>
Dec 12 09:32:11.440 INFO [stderr] 128 | | }
Dec 12 09:32:11.440 INFO [stderr]     | |_- in this macro invocation
Dec 12 09:32:11.440 INFO [stderr]     |
Dec 12 09:32:11.441 INFO [stderr]     = note: #[warn(unused_parens)] on by default
Dec 12 09:32:11.441 INFO [stderr] 
Dec 12 09:32:11.441 INFO [stderr] warning: unnecessary parentheses around function argument
Dec 12 09:32:11.441 INFO [stderr]    --> src/arbitrary.rs:112:47
Dec 12 09:32:11.441 INFO [stderr]     |
Dec 12 09:32:11.441 INFO [stderr] 112 |                       FromIteratorShrinker::new(($($placeholder::shrink()),*))
Dec 12 09:32:11.441 INFO [stderr]     |                                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 12 09:32:11.441 INFO [stderr] ...
Dec 12 09:32:11.441 INFO [stderr] 119 | / generic_impls! {
Dec 12 09:32:11.441 INFO [stderr] 120 | |     Vec<T>,
Dec 12 09:32:11.441 INFO [stderr] 121 | |     BTreeMap<K, V>,
Dec 12 09:32:11.441 INFO [stderr] 122 | |     BTreeSet<T>,
Dec 12 09:32:11.441 INFO [stderr] ...   |
Dec 12 09:32:11.441 INFO [stderr] 127 | |     VecDeque<T>
Dec 12 09:32:11.441 INFO [stderr] 128 | | }
Dec 12 09:32:11.441 INFO [stderr]     | |_- in this macro invocation
Dec 12 09:32:11.441 INFO [stderr] 
Dec 12 09:32:11.441 INFO [stderr] warning: unnecessary parentheses around function argument
Dec 12 09:32:11.441 INFO [stderr]    --> src/arbitrary.rs:108:48
Dec 12 09:32:11.441 INFO [stderr]     |
Dec 12 09:32:11.441 INFO [stderr] 108 |                       FromIteratorGenerator::new(($($placeholder::arbitrary()),*))
Dec 12 09:32:11.441 INFO [stderr]     |                                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 12 09:32:11.441 INFO [stderr] ...
Dec 12 09:32:11.441 INFO [stderr] 119 | / generic_impls! {
Dec 12 09:32:11.441 INFO [stderr] 120 | |     Vec<T>,
Dec 12 09:32:11.441 INFO [stderr] 121 | |     BTreeMap<K, V>,
Dec 12 09:32:11.441 INFO [stderr] 122 | |     BTreeSet<T>,
Dec 12 09:32:11.441 INFO [stderr] ...   |
Dec 12 09:32:11.441 INFO [stderr] 127 | |     VecDeque<T>
Dec 12 09:32:11.441 INFO [stderr] 128 | | }
Dec 12 09:32:11.441 INFO [stderr]     | |_- in this macro invocation
Dec 12 09:32:11.441 INFO [stderr] 
Dec 12 09:32:23.560 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.86s
Dec 12 09:32:23.565 INFO [stderr] su: No module specific data is present
Dec 12 09:32:24.470 INFO running `"docker" "inspect" "45cb501e1d60efcd05d9a6469e8de5ba83243889c0f9e95e44d03ec9d44ff7b3"`
Dec 12 09:32:24.815 INFO running `"docker" "rm" "-f" "45cb501e1d60efcd05d9a6469e8de5ba83243889c0f9e95e44d03ec9d44ff7b3"`
Dec 12 09:32:25.092 INFO [stdout] 45cb501e1d60efcd05d9a6469e8de5ba83243889c0f9e95e44d03ec9d44ff7b3