Dec 04 14:37:31.197 INFO checking mariosangiorgio/rulox against master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc for pr-56481
Dec 04 14:37:31.197 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-3/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-56481/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/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 +c8ae2de8363be088604ffa2ccba84ff7ad7250bc-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 04 14:37:31.525 INFO [stdout] de4d25ddddca4623d149f0746847c0c8d42ce9859edfd1a937571c35a41c91d2
Dec 04 14:37:31.527 INFO running `"docker" "start" "-a" "de4d25ddddca4623d149f0746847c0c8d42ce9859edfd1a937571c35a41c91d2"`
Dec 04 14:37:32.771 INFO [stderr] usermod: no changes
Dec 04 14:37:32.982 INFO [stderr]     Checking byteorder v1.2.7
Dec 04 14:37:32.991 INFO [stderr]     Checking wait-timeout v0.1.5
Dec 04 14:37:32.991 INFO [stderr]     Checking rand v0.5.5
Dec 04 14:37:32.991 INFO [stderr]    Compiling syn v0.15.14
Dec 04 14:37:35.771 INFO [stderr]     Checking tempfile v3.0.4
Dec 04 14:37:36.475 INFO [stderr]     Checking rusty-fork v0.2.1
Dec 04 14:37:37.967 INFO [stderr]     Checking proptest v0.8.7
Dec 04 14:37:41.695 INFO [stderr]    Compiling num-derive v0.2.3
Dec 04 14:37:49.987 INFO [stderr]     Checking rulox v0.1.0 (/source)
Dec 04 14:37:56.279 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 14:37:56.279 INFO [stderr]    --> src/treewalk/mod.rs:99:5
Dec 04 14:37:56.279 INFO [stderr]     |
Dec 04 14:37:56.279 INFO [stderr] 99  | /     proptest! {
Dec 04 14:37:56.279 INFO [stderr] 100 | |     #[test]
Dec 04 14:37:56.279 INFO [stderr] 101 | |     fn doesnt_crash(ref input in "\\PC*") {
Dec 04 14:37:56.279 INFO [stderr] 102 | |         let mut lox_vm = TreeWalkRuloxInterpreter::default();
Dec 04 14:37:56.279 INFO [stderr] 103 | |         lox_vm.run(input)
Dec 04 14:37:56.279 INFO [stderr] 104 | |     }
Dec 04 14:37:56.279 INFO [stderr] 105 | |     }
Dec 04 14:37:56.279 INFO [stderr]     | |_____^
Dec 04 14:37:56.279 INFO [stderr]     |
Dec 04 14:37:56.279 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 04 14:37:56.279 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 14:37:56.279 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)
Dec 04 14:37:56.279 INFO [stderr] 
Dec 04 14:37:56.286 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 14:37:56.286 INFO [stderr]   --> src/vm/mod.rs:27:5
Dec 04 14:37:56.286 INFO [stderr]    |
Dec 04 14:37:56.286 INFO [stderr] 27 | /     proptest! {
Dec 04 14:37:56.286 INFO [stderr] 28 | |     #[test]
Dec 04 14:37:56.286 INFO [stderr] 29 | |     #[ignore]
Dec 04 14:37:56.286 INFO [stderr] 30 | |     fn doesnt_crash(ref input in "\\PC*") {
Dec 04 14:37:56.286 INFO [stderr] ...  |
Dec 04 14:37:56.286 INFO [stderr] 33 | |     }
Dec 04 14:37:56.286 INFO [stderr] 34 | |     }
Dec 04 14:37:56.286 INFO [stderr]    | |_____^
Dec 04 14:37:56.286 INFO [stderr]    |
Dec 04 14:37:56.286 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 14:37:56.286 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)
Dec 04 14:37:56.286 INFO [stderr] 
Dec 04 14:37:56.330 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 23.51s
Dec 04 14:37:56.336 INFO [stderr] su: No module specific data is present
Dec 04 14:37:57.111 INFO running `"docker" "inspect" "de4d25ddddca4623d149f0746847c0c8d42ce9859edfd1a937571c35a41c91d2"`
Dec 04 14:37:57.417 INFO running `"docker" "rm" "-f" "de4d25ddddca4623d149f0746847c0c8d42ce9859edfd1a937571c35a41c91d2"`
Dec 04 14:37:57.689 INFO [stdout] de4d25ddddca4623d149f0746847c0c8d42ce9859edfd1a937571c35a41c91d2