Dec 19 05:33:02.138 INFO checking whothey/firstfollow against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 05:33:02.138 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-5/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/whothey/firstfollow:/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" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 05:33:02.678 INFO [stdout] 71769cf5fa451ff3f41d91ad226ac4f59c8d450b7a56b7e243978b68b670277b
Dec 19 05:33:02.681 INFO running `"docker" "start" "-a" "71769cf5fa451ff3f41d91ad226ac4f59c8d450b7a56b7e243978b68b670277b"`
Dec 19 05:33:05.101 INFO [stderr]     Checking libc v0.2.26
Dec 19 05:33:05.104 INFO [stderr]     Checking regex-syntax v0.4.1
Dec 19 05:33:05.108 INFO [stderr]     Checking thread_local v0.3.4
Dec 19 05:33:06.500 INFO [stderr]     Checking memchr v1.0.1
Dec 19 05:33:06.768 INFO [stderr]     Checking aho-corasick v0.6.3
Dec 19 05:33:07.833 INFO [stderr]     Checking regex v0.2.2
Dec 19 05:33:09.800 INFO [stderr]     Checking env_logger v0.4.3
Dec 19 05:33:10.137 INFO [stderr]     Checking firstfollow v0.1.0 (/opt/crater/workdir)
Dec 19 05:33:10.628 INFO [stderr] warning: method is never used: `is_terminal`
Dec 19 05:33:10.628 INFO [stderr]   --> src/formalgrammar/symbol.rs:10:5
Dec 19 05:33:10.628 INFO [stderr]    |
Dec 19 05:33:10.628 INFO [stderr] 10 |     pub fn is_terminal(&self) -> bool {
Dec 19 05:33:10.628 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 05:33:10.628 INFO [stderr]    |
Dec 19 05:33:10.628 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 19 05:33:10.628 INFO [stderr] 
Dec 19 05:33:10.628 INFO [stderr] warning: method is never used: `is_nonterminal`
Dec 19 05:33:10.628 INFO [stderr]   --> src/formalgrammar/symbol.rs:17:5
Dec 19 05:33:10.628 INFO [stderr]    |
Dec 19 05:33:10.628 INFO [stderr] 17 |     pub fn is_nonterminal(&self) -> bool {
Dec 19 05:33:10.628 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 05:33:10.628 INFO [stderr] 
Dec 19 05:33:10.800 INFO [stderr] warning: method is never used: `is_terminal`
Dec 19 05:33:10.800 INFO [stderr]   --> src/formalgrammar/symbol.rs:10:5
Dec 19 05:33:10.800 INFO [stderr]    |
Dec 19 05:33:10.800 INFO [stderr] 10 |     pub fn is_terminal(&self) -> bool {
Dec 19 05:33:10.800 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 05:33:10.800 INFO [stderr]    |
Dec 19 05:33:10.800 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 19 05:33:10.800 INFO [stderr] 
Dec 19 05:33:10.800 INFO [stderr] warning: method is never used: `is_nonterminal`
Dec 19 05:33:10.800 INFO [stderr]   --> src/formalgrammar/symbol.rs:17:5
Dec 19 05:33:10.800 INFO [stderr]    |
Dec 19 05:33:10.800 INFO [stderr] 17 |     pub fn is_nonterminal(&self) -> bool {
Dec 19 05:33:10.800 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 05:33:10.800 INFO [stderr] 
Dec 19 05:33:10.852 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.81s
Dec 19 05:33:11.886 INFO running `"docker" "inspect" "71769cf5fa451ff3f41d91ad226ac4f59c8d450b7a56b7e243978b68b670277b"`
Dec 19 05:33:12.250 INFO running `"docker" "rm" "-f" "71769cf5fa451ff3f41d91ad226ac4f59c8d450b7a56b7e243978b68b670277b"`
Dec 19 05:33:12.508 INFO [stdout] 71769cf5fa451ff3f41d91ad226ac4f59c8d450b7a56b7e243978b68b670277b