[INFO] updating cached repository https://github.com/heldeo/RFLAP
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 513e6323d10cdcc80ab95370796019038cb1aaea
[INFO] checking heldeo/RFLAP against master#6dee5f1126dfd5c9314ee5ae9d9eb010e35ef257 for pr-70872
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fheldeo%2FRFLAP" "/workspace/builds/worker-7/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/heldeo/RFLAP on toolchain 6dee5f1126dfd5c9314ee5ae9d9eb010e35ef257
[INFO] running `"/workspace/cargo-home/bin/cargo" "+6dee5f1126dfd5c9314ee5ae9d9eb010e35ef257" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/heldeo/RFLAP
[INFO] finished tweaking git repo https://github.com/heldeo/RFLAP
[INFO] tweaked toml for git repo https://github.com/heldeo/RFLAP written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/heldeo/RFLAP already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+6dee5f1126dfd5c9314ee5ae9d9eb010e35ef257" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+6dee5f1126dfd5c9314ee5ae9d9eb010e35ef257" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] c0a63c2fa34b5b71e17fa4db444c46c385cd63fb7ccd779fa5ff21da0d04140b
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "c0a63c2fa34b5b71e17fa4db444c46c385cd63fb7ccd779fa5ff21da0d04140b"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling smallvec v1.0.0
[INFO] [stderr]    Compiling ring v0.13.5
[INFO] [stderr]     Checking filetime v0.2.8
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling serde_derive v1.0.103
[INFO] [stderr]     Checking hyper v0.10.16
[INFO] [stderr]    Compiling smallvec v0.6.13
[INFO] [stderr]    Compiling unicode-normalization v0.1.11
[INFO] [stderr]     Checking notify v4.0.14
[INFO] [stderr]    Compiling idna v0.1.5
[INFO] [stderr]    Compiling url v1.7.2
[INFO] [stderr]    Compiling cookie v0.11.1
[INFO] [stderr]     Checking rocket_http v0.4.2
[INFO] [stderr]     Checking serde v1.0.103
[INFO] [stderr]    Compiling rocket_codegen v0.4.2
[INFO] [stderr]     Checking toml v0.4.10
[INFO] [stderr]     Checking serde_json v1.0.42
[INFO] [stderr]     Checking rocket v0.4.2
[INFO] [stderr]     Checking rocket_contrib v0.4.2
[INFO] [stderr]     Checking automata v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `std::collections::HashSet`
[INFO] [stderr]  --> src/main.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::collections::HashSet;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::HashMap`
[INFO] [stderr]  --> src/main.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use std::collections::HashMap;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `serde_json::json`
[INFO] [stderr]  --> src/finite_automaton.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use serde_json::json;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Serializer`
[INFO] [stderr]  --> src/finite_automaton.rs:8:37
[INFO] [stderr]   |
[INFO] [stderr] 8 | use serde::{Deserialize, Serialize, Serializer};
[INFO] [stderr]   |                                     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `rocket_contrib::json::Json`
[INFO] [stderr]   --> src/finite_automaton.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 | use rocket_contrib::json::Json;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `FromRequest`, `Request`, `self`
[INFO] [stderr]   --> src/finite_automaton.rs:15:23
[INFO] [stderr]    |
[INFO] [stderr] 15 | use rocket::request::{self, Request, FromRequest};
[INFO] [stderr]    |                       ^^^^  ^^^^^^^  ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `FromDataSimple`, `self`
[INFO] [stderr]   --> src/finite_automaton.rs:16:20
[INFO] [stderr]    |
[INFO] [stderr] 16 | use rocket::data::{self, FromDataSimple};
[INFO] [stderr]    |                    ^^^^  ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::HashSet`
[INFO] [stderr]  --> src/main.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::collections::HashSet;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::HashMap`
[INFO] [stderr]  --> src/main.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use std::collections::HashMap;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `serde_json::json`
[INFO] [stderr]  --> src/finite_automaton.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use serde_json::json;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Serializer`
[INFO] [stderr]  --> src/finite_automaton.rs:8:37
[INFO] [stderr]   |
[INFO] [stderr] 8 | use serde::{Deserialize, Serialize, Serializer};
[INFO] [stderr]   |                                     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `rocket_contrib::json::Json`
[INFO] [stderr]   --> src/finite_automaton.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 | use rocket_contrib::json::Json;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `FromRequest`, `Request`, `self`
[INFO] [stderr]   --> src/finite_automaton.rs:15:23
[INFO] [stderr]    |
[INFO] [stderr] 15 | use rocket::request::{self, Request, FromRequest};
[INFO] [stderr]    |                       ^^^^  ^^^^^^^  ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `FromDataSimple`, `self`
[INFO] [stderr]   --> src/finite_automaton.rs:16:20
[INFO] [stderr]    |
[INFO] [stderr] 16 | use rocket::data::{self, FromDataSimple};
[INFO] [stderr]    |                    ^^^^  ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `deserialize_json`
[INFO] [stderr]    --> src/finite_automaton.rs:339:2
[INFO] [stderr]     |
[INFO] [stderr] 339 |     fn deserialize_json(self, input_json : serde_json::Value) -> Option<FiniteAutomaton> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `deserialize_json`
[INFO] [stderr]    --> src/finite_automaton.rs:339:2
[INFO] [stderr]     |
[INFO] [stderr] 339 |     fn deserialize_json(self, input_json : serde_json::Value) -> Option<FiniteAutomaton> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 23s
[INFO] running `"docker" "inspect" "c0a63c2fa34b5b71e17fa4db444c46c385cd63fb7ccd779fa5ff21da0d04140b"`
[INFO] running `"docker" "rm" "-f" "c0a63c2fa34b5b71e17fa4db444c46c385cd63fb7ccd779fa5ff21da0d04140b"`
[INFO] [stdout] c0a63c2fa34b5b71e17fa4db444c46c385cd63fb7ccd779fa5ff21da0d04140b