Dec 11 14:10:12.205 INFO checking mariosangiorgio/rulox against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 11 14:10:12.205 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 11 14:10:12.604 INFO [stdout] 40d0fd2311d5337d436a0e2f5447362db370a4cb3543c40a4f864f5f993989bb
Dec 11 14:10:12.619 INFO running `"docker" "start" "-a" "40d0fd2311d5337d436a0e2f5447362db370a4cb3543c40a4f864f5f993989bb"`
Dec 11 14:10:13.771 INFO [stderr] usermod: no changes
Dec 11 14:10:13.968 INFO [stderr]     Checking byteorder v1.2.7
Dec 11 14:10:13.968 INFO [stderr]     Checking wait-timeout v0.1.5
Dec 11 14:10:13.968 INFO [stderr]     Checking rand v0.5.5
Dec 11 14:10:13.972 INFO [stderr]    Compiling syn v0.15.14
Dec 11 14:10:17.873 INFO [stderr]     Checking tempfile v3.0.4
Dec 11 14:10:18.925 INFO [stderr]     Checking rusty-fork v0.2.1
Dec 11 14:10:20.091 INFO [stderr]     Checking proptest v0.8.7
Dec 11 14:10:24.464 INFO [stderr]    Compiling num-derive v0.2.3
Dec 11 14:10:30.904 INFO [stderr]     Checking rulox v0.1.0 (/source)
Dec 11 14:10:37.772 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 14:10:37.772 INFO [stderr]    --> src/treewalk/mod.rs:99:5
Dec 11 14:10:37.772 INFO [stderr]     |
Dec 11 14:10:37.772 INFO [stderr] 99  | /     proptest! {
Dec 11 14:10:37.772 INFO [stderr] 100 | |     #[test]
Dec 11 14:10:37.772 INFO [stderr] 101 | |     fn doesnt_crash(ref input in "\\PC*") {
Dec 11 14:10:37.772 INFO [stderr] 102 | |         let mut lox_vm = TreeWalkRuloxInterpreter::default();
Dec 11 14:10:37.772 INFO [stderr] 103 | |         lox_vm.run(input)
Dec 11 14:10:37.772 INFO [stderr] 104 | |     }
Dec 11 14:10:37.772 INFO [stderr] 105 | |     }
Dec 11 14:10:37.772 INFO [stderr]     | |_____^
Dec 11 14:10:37.772 INFO [stderr]     |
Dec 11 14:10:37.772 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 11 14:10:37.772 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 14:10:37.772 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 11 14:10:37.772 INFO [stderr] 
Dec 11 14:10:37.772 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 14:10:37.772 INFO [stderr]   --> src/vm/mod.rs:27:5
Dec 11 14:10:37.772 INFO [stderr]    |
Dec 11 14:10:37.772 INFO [stderr] 27 | /     proptest! {
Dec 11 14:10:37.772 INFO [stderr] 28 | |     #[test]
Dec 11 14:10:37.772 INFO [stderr] 29 | |     #[ignore]
Dec 11 14:10:37.772 INFO [stderr] 30 | |     fn doesnt_crash(ref input in "\\PC*") {
Dec 11 14:10:37.772 INFO [stderr] ...  |
Dec 11 14:10:37.772 INFO [stderr] 33 | |     }
Dec 11 14:10:37.772 INFO [stderr] 34 | |     }
Dec 11 14:10:37.772 INFO [stderr]    | |_____^
Dec 11 14:10:37.772 INFO [stderr]    |
Dec 11 14:10:37.772 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 14:10:37.772 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 11 14:10:37.772 INFO [stderr] 
Dec 11 14:10:37.821 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 24.01s
Dec 11 14:10:37.830 INFO [stderr] su: No module specific data is present
Dec 11 14:10:38.871 INFO running `"docker" "inspect" "40d0fd2311d5337d436a0e2f5447362db370a4cb3543c40a4f864f5f993989bb"`
Dec 11 14:10:39.312 INFO running `"docker" "rm" "-f" "40d0fd2311d5337d436a0e2f5447362db370a4cb3543c40a4f864f5f993989bb"`
Dec 11 14:10:39.584 INFO [stdout] 40d0fd2311d5337d436a0e2f5447362db370a4cb3543c40a4f864f5f993989bb