[INFO] updating cached repository https://github.com/ninjamuffin99/FulpTron.rs
[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] 8e736950c105bc748e56c02a6568f25f8f6c0a1b
[INFO] checking ninjamuffin99/FulpTron.rs against master#fdc0011561c6365c596dfd8fa1ef388162bc89c7 for pr-66504-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fninjamuffin99%2FFulpTron.rs" "/workspace/builds/worker-13/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ninjamuffin99/FulpTron.rs on toolchain fdc0011561c6365c596dfd8fa1ef388162bc89c7
[INFO] running `"/workspace/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/ninjamuffin99/FulpTron.rs
[INFO] finished tweaking git repo https://github.com/ninjamuffin99/FulpTron.rs
[INFO] tweaked toml for git repo https://github.com/ninjamuffin99/FulpTron.rs written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/ninjamuffin99/FulpTron.rs already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "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] cd4da782573b7cff172cee204298d3c643b109fa7be7f5f5092ee9b15cb9d640
[INFO] running `"docker" "start" "-a" "cd4da782573b7cff172cee204298d3c643b109fa7be7f5f5092ee9b15cb9d640"`
[INFO] [stderr]    Compiling serenity v0.7.1
[INFO] [stderr]     Checking tokio-io v0.1.12
[INFO] [stderr]     Checking rustls v0.16.0
[INFO] [stderr]     Checking tungstenite v0.9.1
[INFO] [stderr]     Checking cookie_store v0.7.0
[INFO] [stderr]     Checking tokio-reactor v0.1.9
[INFO] [stderr]     Checking h2 v0.1.26
[INFO] [stderr]     Checking tokio-tcp v0.1.3
[INFO] [stderr]     Checking tokio v0.1.22
[INFO] [stderr]     Checking tokio-rustls v0.10.2
[INFO] [stderr]     Checking hyper v0.12.35
[INFO] [stderr]     Checking hyper-rustls v0.17.1
[INFO] [stderr]     Checking reqwest v0.9.20
[INFO] [stderr]     Checking fulpron_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `env`
[INFO] [stderr]  --> src/main.rs:1:44
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::{collections::{HashMap, HashSet}, env, fmt::Write, sync::Arc};
[INFO] [stderr]   |                                            ^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `env`
[INFO] [stderr]  --> src/main.rs:1:44
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::{collections::{HashMap, HashSet}, env, fmt::Write, sync::Arc};
[INFO] [stderr]   |                                            ^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 48.47s
[INFO] running `"docker" "inspect" "cd4da782573b7cff172cee204298d3c643b109fa7be7f5f5092ee9b15cb9d640"`
[INFO] running `"docker" "rm" "-f" "cd4da782573b7cff172cee204298d3c643b109fa7be7f5f5092ee9b15cb9d640"`
[INFO] [stdout] cd4da782573b7cff172cee204298d3c643b109fa7be7f5f5092ee9b15cb9d640