Dec 11 06:10:31.216 INFO checking whothey/firstfollow against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 11 06:10:31.216 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 06:10:31.794 INFO [stdout] 86ca88bcc0a87d94d2825456700827a2f91847e333b45e4034129e615ec4cdbf
Dec 11 06:10:31.798 INFO running `"docker" "start" "-a" "86ca88bcc0a87d94d2825456700827a2f91847e333b45e4034129e615ec4cdbf"`
Dec 11 06:10:33.058 INFO [stderr] usermod: no changes
Dec 11 06:10:33.144 INFO [stderr]     Checking libc v0.2.26
Dec 11 06:10:33.148 INFO [stderr]     Checking thread_local v0.3.4
Dec 11 06:10:34.299 INFO [stderr]     Checking memchr v1.0.1
Dec 11 06:10:34.589 INFO [stderr]     Checking aho-corasick v0.6.3
Dec 11 06:10:35.299 INFO [stderr]     Checking regex v0.2.2
Dec 11 06:10:37.274 INFO [stderr]     Checking env_logger v0.4.3
Dec 11 06:10:37.666 INFO [stderr]     Checking firstfollow v0.1.0 (/source)
Dec 11 06:10:38.492 INFO [stderr] warning: method is never used: `is_terminal`
Dec 11 06:10:38.493 INFO [stderr]   --> src/formalgrammar/symbol.rs:10:5
Dec 11 06:10:38.493 INFO [stderr]    |
Dec 11 06:10:38.493 INFO [stderr] 10 |     pub fn is_terminal(&self) -> bool {
Dec 11 06:10:38.493 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 06:10:38.494 INFO [stderr]    |
Dec 11 06:10:38.494 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 11 06:10:38.494 INFO [stderr] 
Dec 11 06:10:38.494 INFO [stderr] warning: method is never used: `is_nonterminal`
Dec 11 06:10:38.495 INFO [stderr]   --> src/formalgrammar/symbol.rs:17:5
Dec 11 06:10:38.495 INFO [stderr]    |
Dec 11 06:10:38.495 INFO [stderr] 17 |     pub fn is_nonterminal(&self) -> bool {
Dec 11 06:10:38.495 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 06:10:38.495 INFO [stderr] 
Dec 11 06:10:38.512 INFO [stderr] warning: method is never used: `is_terminal`
Dec 11 06:10:38.513 INFO [stderr]   --> src/formalgrammar/symbol.rs:10:5
Dec 11 06:10:38.513 INFO [stderr]    |
Dec 11 06:10:38.513 INFO [stderr] 10 |     pub fn is_terminal(&self) -> bool {
Dec 11 06:10:38.513 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 06:10:38.514 INFO [stderr]    |
Dec 11 06:10:38.514 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 11 06:10:38.514 INFO [stderr] 
Dec 11 06:10:38.514 INFO [stderr] warning: method is never used: `is_nonterminal`
Dec 11 06:10:38.515 INFO [stderr]   --> src/formalgrammar/symbol.rs:17:5
Dec 11 06:10:38.515 INFO [stderr]    |
Dec 11 06:10:38.515 INFO [stderr] 17 |     pub fn is_nonterminal(&self) -> bool {
Dec 11 06:10:38.515 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 06:10:38.515 INFO [stderr] 
Dec 11 06:10:38.569 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.49s
Dec 11 06:10:38.573 INFO [stderr] su: No module specific data is present
Dec 11 06:10:40.169 INFO running `"docker" "inspect" "86ca88bcc0a87d94d2825456700827a2f91847e333b45e4034129e615ec4cdbf"`
Dec 11 06:10:40.518 INFO running `"docker" "rm" "-f" "86ca88bcc0a87d94d2825456700827a2f91847e333b45e4034129e615ec4cdbf"`
Dec 11 06:10:40.908 INFO [stdout] 86ca88bcc0a87d94d2825456700827a2f91847e333b45e4034129e615ec4cdbf