Dec 17 20:09:01.579 INFO checking mariosangiorgio/rulox against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 17 20:09:01.579 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-2/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/gh/mariosangiorgio/rulox:/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" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 17 20:09:02.008 INFO [stdout] cbcbeb2812a3d3c353019822ef320d7f1f73ea9879966104c9741e341eabfb39
Dec 17 20:09:02.014 INFO running `"docker" "start" "-a" "cbcbeb2812a3d3c353019822ef320d7f1f73ea9879966104c9741e341eabfb39"`
Dec 17 20:09:02.957 INFO [stderr]     Checking wait-timeout v0.1.5
Dec 17 20:09:02.968 INFO [stderr]     Checking rand v0.5.5
Dec 17 20:09:03.005 INFO [stderr]    Compiling syn v0.15.14
Dec 17 20:09:05.343 INFO [stderr]     Checking tempfile v3.0.4
Dec 17 20:09:05.772 INFO [stderr]     Checking rusty-fork v0.2.1
Dec 17 20:09:06.397 INFO [stderr]     Checking proptest v0.8.7
Dec 17 20:09:11.873 INFO [stderr]    Compiling num-derive v0.2.3
Dec 17 20:09:18.668 INFO [stderr]     Checking rulox v0.1.0 (/opt/crater/workdir)
Dec 17 20:09:23.664 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 20:09:23.664 INFO [stderr]    --> src/treewalk/mod.rs:99:5
Dec 17 20:09:23.664 INFO [stderr]     |
Dec 17 20:09:23.664 INFO [stderr] 99  | /     proptest! {
Dec 17 20:09:23.664 INFO [stderr] 100 | |     #[test]
Dec 17 20:09:23.664 INFO [stderr] 101 | |     fn doesnt_crash(ref input in "\\PC*") {
Dec 17 20:09:23.664 INFO [stderr] 102 | |         let mut lox_vm = TreeWalkRuloxInterpreter::default();
Dec 17 20:09:23.664 INFO [stderr] 103 | |         lox_vm.run(input)
Dec 17 20:09:23.664 INFO [stderr] 104 | |     }
Dec 17 20:09:23.664 INFO [stderr] 105 | |     }
Dec 17 20:09:23.664 INFO [stderr]     | |_____^
Dec 17 20:09:23.664 INFO [stderr]     |
Dec 17 20:09:23.664 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 17 20:09:23.664 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 20:09:23.664 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 17 20:09:23.665 INFO [stderr] 
Dec 17 20:09:23.668 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 20:09:23.668 INFO [stderr]   --> src/vm/mod.rs:27:5
Dec 17 20:09:23.668 INFO [stderr]    |
Dec 17 20:09:23.668 INFO [stderr] 27 | /     proptest! {
Dec 17 20:09:23.668 INFO [stderr] 28 | |     #[test]
Dec 17 20:09:23.668 INFO [stderr] 29 | |     #[ignore]
Dec 17 20:09:23.668 INFO [stderr] 30 | |     fn doesnt_crash(ref input in "\\PC*") {
Dec 17 20:09:23.668 INFO [stderr] ...  |
Dec 17 20:09:23.668 INFO [stderr] 33 | |     }
Dec 17 20:09:23.668 INFO [stderr] 34 | |     }
Dec 17 20:09:23.668 INFO [stderr]    | |_____^
Dec 17 20:09:23.668 INFO [stderr]    |
Dec 17 20:09:23.668 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 20:09:23.668 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 17 20:09:23.668 INFO [stderr] 
Dec 17 20:09:23.745 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 20.92s
Dec 17 20:09:24.623 INFO running `"docker" "inspect" "cbcbeb2812a3d3c353019822ef320d7f1f73ea9879966104c9741e341eabfb39"`
Dec 17 20:09:24.925 INFO running `"docker" "rm" "-f" "cbcbeb2812a3d3c353019822ef320d7f1f73ea9879966104c9741e341eabfb39"`
Dec 17 20:09:25.274 INFO [stdout] cbcbeb2812a3d3c353019822ef320d7f1f73ea9879966104c9741e341eabfb39