[INFO] crate suppositions 0.1.4 is already in cache
[INFO] extracting crate suppositions 0.1.4 into work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/reg/suppositions/0.1.4
[INFO] extracting crate suppositions 0.1.4 into work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/reg/suppositions/0.1.4
[INFO] validating manifest of suppositions-0.1.4 on toolchain master#e305df1846a6d985315917ae0c81b74af8b4e641
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of suppositions-0.1.4 on toolchain try#99a7498759a22b5684caf798a98b7e90ad9d2443
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+99a7498759a22b5684caf798a98b7e90ad9d2443-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing suppositions-0.1.4
[INFO] finished frobbing suppositions-0.1.4
[INFO] frobbed toml for suppositions-0.1.4 written to work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/reg/suppositions/0.1.4/Cargo.toml
[INFO] started frobbing suppositions-0.1.4
[INFO] finished frobbing suppositions-0.1.4
[INFO] frobbed toml for suppositions-0.1.4 written to work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/reg/suppositions/0.1.4/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+99a7498759a22b5684caf798a98b7e90ad9d2443-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+99a7498759a22b5684caf798a98b7e90ad9d2443-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking suppositions-0.1.4 against try#99a7498759a22b5684caf798a98b7e90ad9d2443 for pr-60039-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-60039-1/worker-3/try#99a7498759a22b5684caf798a98b7e90ad9d2443:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/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" "+99a7498759a22b5684caf798a98b7e90ad9d2443-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] aad3ecb2b3e61ae756d84e7dfa7089d1331f503276235d666e96d4125a8ab8c7
[INFO] running `"docker" "start" "-a" "aad3ecb2b3e61ae756d84e7dfa7089d1331f503276235d666e96d4125a8ab8c7"`
[INFO] [stderr]     Checking hex-slice v0.1.4
[INFO] [stderr]     Checking suppositions v0.1.4 (/opt/crater/workdir)
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]   --> tests/smoketest.rs:57:14
[INFO] [stderr]    |
[INFO] [stderr] 57 |     property((booleans())).check(|_| false)
[INFO] [stderr]    |              ^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_parens)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]   --> tests/smoketest.rs:62:14
[INFO] [stderr]    |
[INFO] [stderr] 62 |     property((booleans())).check(|_| true)
[INFO] [stderr]    |              ^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]   --> tests/smoketest.rs:77:14
[INFO] [stderr]    |
[INFO] [stderr] 77 |     property((booleans())).check(|_| -> Result<(), ()> { Err(()) })
[INFO] [stderr]    |              ^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]   --> tests/smoketest.rs:83:14
[INFO] [stderr]    |
[INFO] [stderr] 83 |     property((booleans())).check(|_| -> Result<(), &'static str> { Err("horrible failure") })
[INFO] [stderr]    |              ^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]   --> tests/smoketest.rs:89:14
[INFO] [stderr]    |
[INFO] [stderr] 89 |     property((booleans())).check(|_| -> Result<(), ()> { Ok(()) })
[INFO] [stderr]    |              ^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]   --> tests/smoketest.rs:95:14
[INFO] [stderr]    |
[INFO] [stderr] 95 |     property((booleans())).check(|_| -> () { panic!("Big bad boom") })
[INFO] [stderr]    |              ^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]    --> tests/smoketest.rs:101:14
[INFO] [stderr]     |
[INFO] [stderr] 101 |     property((booleans())).check(|_| -> () { panic!("Big bad boom") })
[INFO] [stderr]     |              ^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.50s
[INFO] running `"docker" "inspect" "aad3ecb2b3e61ae756d84e7dfa7089d1331f503276235d666e96d4125a8ab8c7"`
[INFO] running `"docker" "rm" "-f" "aad3ecb2b3e61ae756d84e7dfa7089d1331f503276235d666e96d4125a8ab8c7"`
[INFO] [stdout] aad3ecb2b3e61ae756d84e7dfa7089d1331f503276235d666e96d4125a8ab8c7