Nov 30 17:47:40.006 INFO checking proptest-0.8.7 against try#32252761328f59ccfadb1bafb8148c685bc830b3 for pr-56323
Nov 30 17:47:40.006 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56323/worker-5/try#32252761328f59ccfadb1bafb8148c685bc830b3:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/pr-56323/try#32252761328f59ccfadb1bafb8148c685bc830b3:/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 +32252761328f59ccfadb1bafb8148c685bc830b3-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"`
Nov 30 17:47:40.542 INFO [stdout] bee4b384f98c0a3d39e8372e95a5452fbfca4c37458472bbe09db087089ef43b
Nov 30 17:47:40.544 INFO running `"docker" "start" "-a" "bee4b384f98c0a3d39e8372e95a5452fbfca4c37458472bbe09db087089ef43b"`
Nov 30 17:47:42.491 INFO [stderr] usermod: no changes
Nov 30 17:47:42.673 INFO [stderr]     Checking proptest v0.8.7 (/source)
Nov 30 17:47:57.068 INFO [stderr] warning: unused `core::result::Result` that must be used
Nov 30 17:47:57.068 INFO [stderr]    --> src/test_runner/failure_persistence/file.rs:308:5
Nov 30 17:47:57.068 INFO [stderr]     |
Nov 30 17:47:57.068 INFO [stderr] 308 |     write!(buf, "{}", format_basic_seed_line(seed));
Nov 30 17:47:57.068 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 30 17:47:57.068 INFO [stderr]     |
Nov 30 17:47:57.068 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Nov 30 17:47:57.068 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 30 17:47:57.068 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 30 17:47:57.068 INFO [stderr] 
Nov 30 17:48:13.352 INFO [stderr] warning: unused `core::result::Result` that must be used
Nov 30 17:48:13.352 INFO [stderr]    --> src/test_runner/failure_persistence/file.rs:308:5
Nov 30 17:48:13.352 INFO [stderr]     |
Nov 30 17:48:13.352 INFO [stderr] 308 |     write!(buf, "{}", format_basic_seed_line(seed));
Nov 30 17:48:13.352 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 30 17:48:13.352 INFO [stderr]     |
Nov 30 17:48:13.352 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Nov 30 17:48:13.352 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 30 17:48:13.352 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 30 17:48:13.352 INFO [stderr] 
Nov 30 17:48:13.811 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 31.29s
Nov 30 17:48:13.820 INFO [stderr] su: No module specific data is present
Nov 30 17:48:14.817 INFO running `"docker" "inspect" "bee4b384f98c0a3d39e8372e95a5452fbfca4c37458472bbe09db087089ef43b"`
Nov 30 17:48:15.166 INFO running `"docker" "rm" "-f" "bee4b384f98c0a3d39e8372e95a5452fbfca4c37458472bbe09db087089ef43b"`
Nov 30 17:48:15.522 INFO [stdout] bee4b384f98c0a3d39e8372e95a5452fbfca4c37458472bbe09db087089ef43b