Dec 19 22:03:55.528 INFO checking RussellSprouts/6502-language-rust against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 22:03:55.528 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-7/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/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" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 22:03:55.707 INFO [stdout] 461e8c47d80c349b7591c326a90f673f43012c851eeb2d85b48c1980b18d2cfd
Dec 19 22:03:55.710 INFO running `"docker" "start" "-a" "461e8c47d80c349b7591c326a90f673f43012c851eeb2d85b48c1980b18d2cfd"`
Dec 19 22:03:56.308 INFO [stderr]    Compiling libc v0.2.39
Dec 19 22:03:56.308 INFO [stderr]     Checking typed-arena v1.3.0
Dec 19 22:03:56.314 INFO [stderr]    Compiling peg v0.5.4
Dec 19 22:03:56.314 INFO [stderr]    Compiling im v10.0.0
Dec 19 22:03:59.628 INFO [stderr]     Checking memchr v2.0.1
Dec 19 22:04:00.398 INFO [stderr]     Checking aho-corasick v0.6.4
Dec 19 22:04:03.349 INFO [stderr]     Checking regex v0.2.6
Dec 19 22:04:20.220 INFO [stderr]    Compiling compiler v0.1.0 (/opt/crater/workdir)
Dec 19 22:04:22.556 INFO [stderr] warning: unused `#[macro_use]` import
Dec 19 22:04:22.556 INFO [stderr]  --> main.rs:6:1
Dec 19 22:04:22.556 INFO [stderr]   |
Dec 19 22:04:22.556 INFO [stderr] 6 | #[macro_use]
Dec 19 22:04:22.556 INFO [stderr]   | ^^^^^^^^^^^^
Dec 19 22:04:22.556 INFO [stderr]   |
Dec 19 22:04:22.556 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 22:04:22.556 INFO [stderr] 
Dec 19 22:04:22.824 INFO [stderr] warning: unused `#[macro_use]` import
Dec 19 22:04:22.824 INFO [stderr]  --> main.rs:6:1
Dec 19 22:04:22.824 INFO [stderr]   |
Dec 19 22:04:22.824 INFO [stderr] 6 | #[macro_use]
Dec 19 22:04:22.824 INFO [stderr]   | ^^^^^^^^^^^^
Dec 19 22:04:22.824 INFO [stderr]   |
Dec 19 22:04:22.824 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 22:04:22.824 INFO [stderr] 
Dec 19 22:04:23.384 INFO [stderr] warning: variable does not need to be mutable
Dec 19 22:04:23.385 INFO [stderr]    --> main.rs:327:9
Dec 19 22:04:23.385 INFO [stderr]     |
Dec 19 22:04:23.385 INFO [stderr] 327 |     let mut parsed: &Expression2;
Dec 19 22:04:23.385 INFO [stderr]     |         ----^^^^^^
Dec 19 22:04:23.388 INFO [stderr]     |         |
Dec 19 22:04:23.388 INFO [stderr]     |         help: remove this `mut`
Dec 19 22:04:23.388 INFO [stderr]     |
Dec 19 22:04:23.388 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 19 22:04:23.388 INFO [stderr] 
Dec 19 22:04:23.524 INFO [stderr] warning: variable does not need to be mutable
Dec 19 22:04:23.524 INFO [stderr]    --> main.rs:327:9
Dec 19 22:04:23.524 INFO [stderr]     |
Dec 19 22:04:23.524 INFO [stderr] 327 |     let mut parsed: &Expression2;
Dec 19 22:04:23.524 INFO [stderr]     |         ----^^^^^^
Dec 19 22:04:23.524 INFO [stderr]     |         |
Dec 19 22:04:23.524 INFO [stderr]     |         help: remove this `mut`
Dec 19 22:04:23.524 INFO [stderr]     |
Dec 19 22:04:23.524 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 19 22:04:23.524 INFO [stderr] 
Dec 19 22:04:23.632 INFO [stderr] warning: method is never used: `size`
Dec 19 22:04:23.632 INFO [stderr]    --> main.rs:264:5
Dec 19 22:04:23.632 INFO [stderr]     |
Dec 19 22:04:23.632 INFO [stderr] 264 |     fn size(&self) -> u64 {
Dec 19 22:04:23.632 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^
Dec 19 22:04:23.632 INFO [stderr]     |
Dec 19 22:04:23.632 INFO [stderr]     = note: #[warn(dead_code)] on by default
Dec 19 22:04:23.632 INFO [stderr] 
Dec 19 22:04:23.632 INFO [stderr] warning: the feature `underscore_lifetimes` has been stable since 1.26.0 and no longer requires an attribute to enable
Dec 19 22:04:23.632 INFO [stderr]  --> main.rs:2:12
Dec 19 22:04:23.632 INFO [stderr]   |
Dec 19 22:04:23.632 INFO [stderr] 2 | #![feature(underscore_lifetimes)]
Dec 19 22:04:23.632 INFO [stderr]   |            ^^^^^^^^^^^^^^^^^^^^
Dec 19 22:04:23.632 INFO [stderr]   |
Dec 19 22:04:23.632 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 19 22:04:23.632 INFO [stderr] 
Dec 19 22:04:23.820 INFO [stderr] warning: method is never used: `size`
Dec 19 22:04:23.820 INFO [stderr]    --> main.rs:264:5
Dec 19 22:04:23.820 INFO [stderr]     |
Dec 19 22:04:23.820 INFO [stderr] 264 |     fn size(&self) -> u64 {
Dec 19 22:04:23.820 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^
Dec 19 22:04:23.820 INFO [stderr]     |
Dec 19 22:04:23.820 INFO [stderr]     = note: #[warn(dead_code)] on by default
Dec 19 22:04:23.820 INFO [stderr] 
Dec 19 22:04:23.820 INFO [stderr] warning: the feature `underscore_lifetimes` has been stable since 1.26.0 and no longer requires an attribute to enable
Dec 19 22:04:23.820 INFO [stderr]  --> main.rs:2:12
Dec 19 22:04:23.820 INFO [stderr]   |
Dec 19 22:04:23.820 INFO [stderr] 2 | #![feature(underscore_lifetimes)]
Dec 19 22:04:23.820 INFO [stderr]   |            ^^^^^^^^^^^^^^^^^^^^
Dec 19 22:04:23.820 INFO [stderr]   |
Dec 19 22:04:23.820 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 19 22:04:23.821 INFO [stderr] 
Dec 19 22:04:23.876 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 27.67s
Dec 19 22:04:24.884 INFO running `"docker" "inspect" "461e8c47d80c349b7591c326a90f673f43012c851eeb2d85b48c1980b18d2cfd"`
Dec 19 22:04:25.114 INFO running `"docker" "rm" "-f" "461e8c47d80c349b7591c326a90f673f43012c851eeb2d85b48c1980b18d2cfd"`
Dec 19 22:04:25.408 INFO [stdout] 461e8c47d80c349b7591c326a90f673f43012c851eeb2d85b48c1980b18d2cfd