Dec 18 05:37:26.872 INFO checking RussellSprouts/6502-language-rust against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 05:37:26.873 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-0/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/gh/RussellSprouts/6502-language-rust:/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" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 05:37:27.223 INFO [stdout] 25b6423f3083e00db77bb05c317917b10e87ccb7ca9ad83b24c1ab25af29a8c8
Dec 18 05:37:27.226 INFO running `"docker" "start" "-a" "25b6423f3083e00db77bb05c317917b10e87ccb7ca9ad83b24c1ab25af29a8c8"`
Dec 18 05:37:28.340 INFO [stderr]    Compiling libc v0.2.39
Dec 18 05:37:28.344 INFO [stderr]    Compiling regex-syntax v0.4.2
Dec 18 05:37:28.349 INFO [stderr]    Compiling thread_local v0.3.5
Dec 18 05:37:28.350 INFO [stderr]    Compiling im v10.0.0
Dec 18 05:37:28.350 INFO [stderr]     Checking regex v0.2.6
Dec 18 05:37:31.032 INFO [stderr]    Compiling memchr v2.0.1
Dec 18 05:37:32.514 INFO [stderr]    Compiling aho-corasick v0.6.4
Dec 18 05:37:48.532 INFO [stderr]    Compiling compiler v0.1.0 (/opt/crater/workdir)
Dec 18 05:37:50.736 INFO [stderr] warning: unused `#[macro_use]` import
Dec 18 05:37:50.736 INFO [stderr]  --> main.rs:6:1
Dec 18 05:37:50.736 INFO [stderr]   |
Dec 18 05:37:50.736 INFO [stderr] 6 | #[macro_use]
Dec 18 05:37:50.736 INFO [stderr]   | ^^^^^^^^^^^^
Dec 18 05:37:50.736 INFO [stderr]   |
Dec 18 05:37:50.736 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 18 05:37:50.736 INFO [stderr] 
Dec 18 05:37:50.752 INFO [stderr] warning: unused `#[macro_use]` import
Dec 18 05:37:50.752 INFO [stderr]  --> main.rs:6:1
Dec 18 05:37:50.752 INFO [stderr]   |
Dec 18 05:37:50.752 INFO [stderr] 6 | #[macro_use]
Dec 18 05:37:50.752 INFO [stderr]   | ^^^^^^^^^^^^
Dec 18 05:37:50.752 INFO [stderr]   |
Dec 18 05:37:50.752 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 18 05:37:50.752 INFO [stderr] 
Dec 18 05:37:51.417 INFO [stderr] warning: variable does not need to be mutable
Dec 18 05:37:51.417 INFO [stderr]    --> main.rs:327:9
Dec 18 05:37:51.417 INFO [stderr]     |
Dec 18 05:37:51.417 INFO [stderr] 327 |     let mut parsed: &Expression2;
Dec 18 05:37:51.417 INFO [stderr]     |         ----^^^^^^
Dec 18 05:37:51.417 INFO [stderr]     |         |
Dec 18 05:37:51.417 INFO [stderr]     |         help: remove this `mut`
Dec 18 05:37:51.417 INFO [stderr]     |
Dec 18 05:37:51.417 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 18 05:37:51.417 INFO [stderr] 
Dec 18 05:37:51.600 INFO [stderr] warning: method is never used: `size`
Dec 18 05:37:51.600 INFO [stderr]    --> main.rs:264:5
Dec 18 05:37:51.600 INFO [stderr]     |
Dec 18 05:37:51.600 INFO [stderr] 264 |     fn size(&self) -> u64 {
Dec 18 05:37:51.600 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^
Dec 18 05:37:51.600 INFO [stderr]     |
Dec 18 05:37:51.600 INFO [stderr]     = note: #[warn(dead_code)] on by default
Dec 18 05:37:51.600 INFO [stderr] 
Dec 18 05:37:51.600 INFO [stderr] warning: the feature `underscore_lifetimes` has been stable since 1.26.0 and no longer requires an attribute to enable
Dec 18 05:37:51.600 INFO [stderr]  --> main.rs:2:12
Dec 18 05:37:51.600 INFO [stderr]   |
Dec 18 05:37:51.600 INFO [stderr] 2 | #![feature(underscore_lifetimes)]
Dec 18 05:37:51.601 INFO [stderr]   |            ^^^^^^^^^^^^^^^^^^^^
Dec 18 05:37:51.601 INFO [stderr]   |
Dec 18 05:37:51.601 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 18 05:37:51.601 INFO [stderr] 
Dec 18 05:37:51.684 INFO [stderr] warning: variable does not need to be mutable
Dec 18 05:37:51.684 INFO [stderr]    --> main.rs:327:9
Dec 18 05:37:51.684 INFO [stderr]     |
Dec 18 05:37:51.684 INFO [stderr] 327 |     let mut parsed: &Expression2;
Dec 18 05:37:51.684 INFO [stderr]     |         ----^^^^^^
Dec 18 05:37:51.684 INFO [stderr]     |         |
Dec 18 05:37:51.684 INFO [stderr]     |         help: remove this `mut`
Dec 18 05:37:51.684 INFO [stderr]     |
Dec 18 05:37:51.684 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 18 05:37:51.684 INFO [stderr] 
Dec 18 05:37:51.900 INFO [stderr] warning: method is never used: `size`
Dec 18 05:37:51.900 INFO [stderr]    --> main.rs:264:5
Dec 18 05:37:51.900 INFO [stderr]     |
Dec 18 05:37:51.900 INFO [stderr] 264 |     fn size(&self) -> u64 {
Dec 18 05:37:51.900 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^
Dec 18 05:37:51.900 INFO [stderr]     |
Dec 18 05:37:51.900 INFO [stderr]     = note: #[warn(dead_code)] on by default
Dec 18 05:37:51.900 INFO [stderr] 
Dec 18 05:37:51.904 INFO [stderr] warning: the feature `underscore_lifetimes` has been stable since 1.26.0 and no longer requires an attribute to enable
Dec 18 05:37:51.905 INFO [stderr]  --> main.rs:2:12
Dec 18 05:37:51.905 INFO [stderr]   |
Dec 18 05:37:51.905 INFO [stderr] 2 | #![feature(underscore_lifetimes)]
Dec 18 05:37:51.905 INFO [stderr]   |            ^^^^^^^^^^^^^^^^^^^^
Dec 18 05:37:51.905 INFO [stderr]   |
Dec 18 05:37:51.905 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 18 05:37:51.905 INFO [stderr] 
Dec 18 05:37:51.990 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 23.71s
Dec 18 05:37:53.598 INFO running `"docker" "inspect" "25b6423f3083e00db77bb05c317917b10e87ccb7ca9ad83b24c1ab25af29a8c8"`
Dec 18 05:37:53.996 INFO running `"docker" "rm" "-f" "25b6423f3083e00db77bb05c317917b10e87ccb7ca9ad83b24c1ab25af29a8c8"`
Dec 18 05:37:54.272 INFO [stdout] 25b6423f3083e00db77bb05c317917b10e87ccb7ca9ad83b24c1ab25af29a8c8