Dec 18 10:39:16.045 INFO checking suppositions-0.1.4 against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 10:39:16.045 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-4/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/reg/suppositions/0.1.4:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 10:39:16.352 INFO [stdout] 75d7599c37218950c71e2d5dcfce783fd3ce4302a3afdddc35eb2d6483307f73
Dec 18 10:39:16.356 INFO running `"docker" "start" "-a" "75d7599c37218950c71e2d5dcfce783fd3ce4302a3afdddc35eb2d6483307f73"`
Dec 18 10:39:17.367 INFO [stderr]     Checking hex-slice v0.1.4
Dec 18 10:39:17.572 INFO [stderr]     Checking suppositions v0.1.4 (/opt/crater/workdir)
Dec 18 10:39:20.157 INFO [stderr] warning: unnecessary parentheses around function argument
Dec 18 10:39:20.157 INFO [stderr]   --> tests/smoketest.rs:57:14
Dec 18 10:39:20.157 INFO [stderr]    |
Dec 18 10:39:20.157 INFO [stderr] 57 |     property((booleans())).check(|_| false)
Dec 18 10:39:20.157 INFO [stderr]    |              ^^^^^^^^^^^^ help: remove these parentheses
Dec 18 10:39:20.157 INFO [stderr]    |
Dec 18 10:39:20.157 INFO [stderr]    = note: #[warn(unused_parens)] on by default
Dec 18 10:39:20.157 INFO [stderr] 
Dec 18 10:39:20.157 INFO [stderr] warning: unnecessary parentheses around function argument
Dec 18 10:39:20.157 INFO [stderr]   --> tests/smoketest.rs:62:14
Dec 18 10:39:20.157 INFO [stderr]    |
Dec 18 10:39:20.157 INFO [stderr] 62 |     property((booleans())).check(|_| true)
Dec 18 10:39:20.157 INFO [stderr]    |              ^^^^^^^^^^^^ help: remove these parentheses
Dec 18 10:39:20.157 INFO [stderr] 
Dec 18 10:39:20.157 INFO [stderr] warning: unnecessary parentheses around function argument
Dec 18 10:39:20.157 INFO [stderr]   --> tests/smoketest.rs:77:14
Dec 18 10:39:20.157 INFO [stderr]    |
Dec 18 10:39:20.157 INFO [stderr] 77 |     property((booleans())).check(|_| -> Result<(), ()> { Err(()) })
Dec 18 10:39:20.157 INFO [stderr]    |              ^^^^^^^^^^^^ help: remove these parentheses
Dec 18 10:39:20.157 INFO [stderr] 
Dec 18 10:39:20.157 INFO [stderr] warning: unnecessary parentheses around function argument
Dec 18 10:39:20.157 INFO [stderr]   --> tests/smoketest.rs:83:14
Dec 18 10:39:20.157 INFO [stderr]    |
Dec 18 10:39:20.157 INFO [stderr] 83 |     property((booleans())).check(|_| -> Result<(), &'static str> { Err("horrible failure") })
Dec 18 10:39:20.157 INFO [stderr]    |              ^^^^^^^^^^^^ help: remove these parentheses
Dec 18 10:39:20.157 INFO [stderr] 
Dec 18 10:39:20.157 INFO [stderr] warning: unnecessary parentheses around function argument
Dec 18 10:39:20.157 INFO [stderr]   --> tests/smoketest.rs:89:14
Dec 18 10:39:20.157 INFO [stderr]    |
Dec 18 10:39:20.157 INFO [stderr] 89 |     property((booleans())).check(|_| -> Result<(), ()> { Ok(()) })
Dec 18 10:39:20.157 INFO [stderr]    |              ^^^^^^^^^^^^ help: remove these parentheses
Dec 18 10:39:20.157 INFO [stderr] 
Dec 18 10:39:20.157 INFO [stderr] warning: unnecessary parentheses around function argument
Dec 18 10:39:20.157 INFO [stderr]   --> tests/smoketest.rs:95:14
Dec 18 10:39:20.157 INFO [stderr]    |
Dec 18 10:39:20.157 INFO [stderr] 95 |     property((booleans())).check(|_| -> () { panic!("Big bad boom") })
Dec 18 10:39:20.157 INFO [stderr]    |              ^^^^^^^^^^^^ help: remove these parentheses
Dec 18 10:39:20.157 INFO [stderr] 
Dec 18 10:39:20.157 INFO [stderr] warning: unnecessary parentheses around function argument
Dec 18 10:39:20.157 INFO [stderr]    --> tests/smoketest.rs:101:14
Dec 18 10:39:20.157 INFO [stderr]     |
Dec 18 10:39:20.157 INFO [stderr] 101 |     property((booleans())).check(|_| -> () { panic!("Big bad boom") })
Dec 18 10:39:20.157 INFO [stderr]     |              ^^^^^^^^^^^^ help: remove these parentheses
Dec 18 10:39:20.157 INFO [stderr] 
Dec 18 10:39:21.164 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.84s
Dec 18 10:39:21.644 INFO running `"docker" "inspect" "75d7599c37218950c71e2d5dcfce783fd3ce4302a3afdddc35eb2d6483307f73"`
Dec 18 10:39:21.781 INFO running `"docker" "rm" "-f" "75d7599c37218950c71e2d5dcfce783fd3ce4302a3afdddc35eb2d6483307f73"`
Dec 18 10:39:21.929 INFO [stdout] 75d7599c37218950c71e2d5dcfce783fd3ce4302a3afdddc35eb2d6483307f73