[INFO] cloning repository https://github.com/ex0dus-0x/xb_automata
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ex0dus-0x/xb_automata" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fex0dus-0x%2Fxb_automata"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fex0dus-0x%2Fxb_automata'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 0efdc651a7bc67b75cafae1be2863556e1e4ec2c
[INFO] checking ex0dus-0x/xb_automata against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fex0dus-0x%2Fxb_automata" "/workspace/builds/worker-5/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ex0dus-0x/xb_automata on toolchain e4dba30b9b475d8750370c4dfb49b6541990904d
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/ex0dus-0x/xb_automata
[INFO] finished tweaking git repo https://github.com/ex0dus-0x/xb_automata
[INFO] tweaked toml for git repo https://github.com/ex0dus-0x/xb_automata written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/ex0dus-0x/xb_automata already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 1d065db7af228d9ae62dd42b33de247cde0cb3df6c5384e959f7fac6d8c9ac2e
[INFO] running `"docker" "start" "-a" "1d065db7af228d9ae62dd42b33de247cde0cb3df6c5384e959f7fac6d8c9ac2e"`
[INFO] [stderr]     Checking xb_automata v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0449]: unnecessary visibility qualifier
[INFO] [stderr]   --> src/lib.rs:59:5
[INFO] [stderr]    |
[INFO] [stderr] 59 |     pub fn xb_new(vec_state: Vec<(char, &'a str)>, vec_instruction: Vec<(char, char, &'a str)>) -> XbMachine<'a> {
[INFO] [stderr]    |     ^^^ `pub` not permitted here because it's implied
[INFO] [stderr] 
[INFO] [stderr] error[E0449]: unnecessary visibility qualifier
[INFO] [stderr]   --> src/lib.rs:86:5
[INFO] [stderr]    |
[INFO] [stderr] 86 |     pub fn xb_simulate(&mut self) -> () {
[INFO] [stderr]    |     ^^^ `pub` not permitted here because it's implied
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `XbMachine`
[INFO] [stderr]    --> src/lib.rs:168:26
[INFO] [stderr]     |
[INFO] [stderr] 168 |         let mut xb_isa = XbMachine::xb_new(xb_states, xb_instructions);
[INFO] [stderr]     |                          ^^^^^^^^^ use of undeclared type or module `XbMachine`
[INFO] [stderr] 
[INFO] [stderr] error[E0449]: unnecessary visibility qualifier
[INFO] [stderr]   --> src/lib.rs:59:5
[INFO] [stderr]    |
[INFO] [stderr] 59 |     pub fn xb_new(vec_state: Vec<(char, &'a str)>, vec_instruction: Vec<(char, char, &'a str)>) -> XbMachine<'a> {
[INFO] [stderr]    |     ^^^ `pub` not permitted here because it's implied
[INFO] [stderr] 
[INFO] [stderr] error[E0449]: unnecessary visibility qualifier
[INFO] [stderr]   --> src/lib.rs:86:5
[INFO] [stderr]    |
[INFO] [stderr] 86 |     pub fn xb_simulate(&mut self) -> () {
[INFO] [stderr]    |     ^^^ `pub` not permitted here because it's implied
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]    --> src/lib.rs:139:9
[INFO] [stderr]     |
[INFO] [stderr] 98  | /         loop {
[INFO] [stderr] 99  | |
[INFO] [stderr] 100 | |             // Iterate over the HashMap by unpacking the key (State) and value (Instruction)
[INFO] [stderr] 101 | |             for (state, instruction) in self.iter() {
[INFO] [stderr] ...   |
[INFO] [stderr] 137 | |             }
[INFO] [stderr] 138 | |         }
[INFO] [stderr]     | |_________- any code following this expression is unreachable
[INFO] [stderr] 139 |           ()
[INFO] [stderr]     |           ^^ unreachable expression
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]    --> src/lib.rs:139:9
[INFO] [stderr]     |
[INFO] [stderr] 98  | /         loop {
[INFO] [stderr] 99  | |
[INFO] [stderr] 100 | |             // Iterate over the HashMap by unpacking the key (State) and value (Instruction)
[INFO] [stderr] 101 | |             for (state, instruction) in self.iter() {
[INFO] [stderr] ...   |
[INFO] [stderr] 137 | |             }
[INFO] [stderr] 138 | |         }
[INFO] [stderr]     | |_________- any code following this expression is unreachable
[INFO] [stderr] 139 |           ()
[INFO] [stderr]     |           ^^ unreachable expression
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors; 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0449`.
[INFO] [stderr] error: aborting due to 3 previous errors; 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0433, E0449.
[INFO] [stderr] For more information about an error, try `rustc --explain E0433`.
[INFO] [stderr] error: could not compile `xb_automata`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `xb_automata`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "1d065db7af228d9ae62dd42b33de247cde0cb3df6c5384e959f7fac6d8c9ac2e"`
[INFO] running `"docker" "rm" "-f" "1d065db7af228d9ae62dd42b33de247cde0cb3df6c5384e959f7fac6d8c9ac2e"`
[INFO] [stdout] 1d065db7af228d9ae62dd42b33de247cde0cb3df6c5384e959f7fac6d8c9ac2e