[INFO] cloning repository whothey/firstfollow
[INFO] running `"git" "clone" "--bare" "git://github.com/whothey/firstfollow.git" "work/cache/sources/gh/whothey/firstfollow"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/whothey/firstfollow'...
[INFO] running `"git" "clone" "work/cache/sources/gh/whothey/firstfollow" "work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/whothey/firstfollow"`
[INFO] [stderr] Cloning into 'work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/whothey/firstfollow'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/whothey/firstfollow" "work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/gh/whothey/firstfollow"`
[INFO] [stderr] Cloning into 'work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/gh/whothey/firstfollow'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] ed70ddfb2c949e42afc1b1b7e51e22ef854739a2
[INFO] sha for GitHub repo whothey/firstfollow: ed70ddfb2c949e42afc1b1b7e51e22ef854739a2
[INFO] validating manifest of whothey/firstfollow on toolchain master#c0086b9e8972fef9fd4af24bae20d45021ed06c6
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c0086b9e8972fef9fd4af24bae20d45021ed06c6-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of whothey/firstfollow on toolchain try#290ac7b29f41ff9fa5232f9a1116ea71a3501063
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+290ac7b29f41ff9fa5232f9a1116ea71a3501063-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing whothey/firstfollow
[INFO] finished frobbing whothey/firstfollow
[INFO] frobbed toml for whothey/firstfollow written to work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/whothey/firstfollow/Cargo.toml
[INFO] started frobbing whothey/firstfollow
[INFO] finished frobbing whothey/firstfollow
[INFO] frobbed toml for whothey/firstfollow written to work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/gh/whothey/firstfollow/Cargo.toml
[INFO] crate whothey/firstfollow has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c0086b9e8972fef9fd4af24bae20d45021ed06c6-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded libc v0.2.26
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+290ac7b29f41ff9fa5232f9a1116ea71a3501063-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking whothey/firstfollow against master#c0086b9e8972fef9fd4af24bae20d45021ed06c6 for pr-58899
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-58899/worker-7/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/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" "+c0086b9e8972fef9fd4af24bae20d45021ed06c6-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 27accb6e38f454f054f51aea9a8870b9a5195c94b94135d73adcc7252f35fa91
[INFO] running `"docker" "start" "-a" "27accb6e38f454f054f51aea9a8870b9a5195c94b94135d73adcc7252f35fa91"`
[INFO] [stderr]     Checking libc v0.2.26
[INFO] [stderr]     Checking thread_local v0.3.4
[INFO] [stderr]     Checking memchr v1.0.1
[INFO] [stderr]     Checking aho-corasick v0.6.3
[INFO] [stderr]     Checking regex v0.2.2
[INFO] [stderr]     Checking env_logger v0.4.3
[INFO] [stderr]     Checking firstfollow v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: method is never used: `is_terminal`
[INFO] [stderr]   --> src/formalgrammar/symbol.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 |     pub fn is_terminal(&self) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_nonterminal`
[INFO] [stderr]   --> src/formalgrammar/symbol.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 |     pub fn is_nonterminal(&self) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_terminal`
[INFO] [stderr]   --> src/formalgrammar/symbol.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 |     pub fn is_terminal(&self) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_nonterminal`
[INFO] [stderr]   --> src/formalgrammar/symbol.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 |     pub fn is_nonterminal(&self) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.76s
[INFO] running `"docker" "inspect" "27accb6e38f454f054f51aea9a8870b9a5195c94b94135d73adcc7252f35fa91"`
[INFO] running `"docker" "rm" "-f" "27accb6e38f454f054f51aea9a8870b9a5195c94b94135d73adcc7252f35fa91"`
[INFO] [stdout] 27accb6e38f454f054f51aea9a8870b9a5195c94b94135d73adcc7252f35fa91