[INFO] updating cached repository https://github.com/lukeKonopka/rust-ws-chat
[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] 06138137e53f6b70755e98477486fb12274a3f56
[INFO] checking lukeKonopka/rust-ws-chat against try#d27c6c6a469a28343396a8f3ac1c9d403aabda69 for pr-66037
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FlukeKonopka%2Frust-ws-chat" "/workspace/builds/worker-11/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/lukeKonopka/rust-ws-chat on toolchain d27c6c6a469a28343396a8f3ac1c9d403aabda69
[INFO] running `"/workspace/cargo-home/bin/cargo" "+d27c6c6a469a28343396a8f3ac1c9d403aabda69" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/lukeKonopka/rust-ws-chat
[INFO] finished tweaking git repo https://github.com/lukeKonopka/rust-ws-chat
[INFO] tweaked toml for git repo https://github.com/lukeKonopka/rust-ws-chat written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate git repo https://github.com/lukeKonopka/rust-ws-chat already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+d27c6c6a469a28343396a8f3ac1c9d403aabda69" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "+d27c6c6a469a28343396a8f3ac1c9d403aabda69" "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] b3ba0e6d512c630b01f85b0b3117ca61ec6d93188f118533311701171b83cf67
[INFO] running `"docker" "start" "-a" "b3ba0e6d512c630b01f85b0b3117ca61ec6d93188f118533311701171b83cf67"`
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling serde v1.0.89
[INFO] [stderr]     Checking mio-extras v2.0.5
[INFO] [stderr]    Compiling proc-macro2 v0.4.27
[INFO] [stderr]     Checking ws v0.8.0
[INFO] [stderr]    Compiling quote v0.6.11
[INFO] [stderr]    Compiling syn v0.15.29
[INFO] [stderr]    Compiling serde_derive v1.0.89
[INFO] [stderr]     Checking serde_json v1.0.39
[INFO] [stderr]     Checking uuid v0.7.2
[INFO] [stderr]     Checking rust-ws-chat v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `err`
[INFO] [stderr]   --> src/message.rs:65:11
[INFO] [stderr]    |
[INFO] [stderr] 65 |   fn from(err: ws::Error) -> Self {
[INFO] [stderr]    |           ^^^ help: consider prefixing with an underscore: `_err`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `err`
[INFO] [stderr]   --> src/message.rs:73:11
[INFO] [stderr]    |
[INFO] [stderr] 73 |   fn from(err: serde_json::error::Error) -> Self {
[INFO] [stderr]    |           ^^^ help: consider prefixing with an underscore: `_err`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `err`
[INFO] [stderr]   --> src/message.rs:65:11
[INFO] [stderr]    |
[INFO] [stderr] 65 |   fn from(err: ws::Error) -> Self {
[INFO] [stderr]    |           ^^^ help: consider prefixing with an underscore: `_err`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `err`
[INFO] [stderr]   --> src/message.rs:73:11
[INFO] [stderr]    |
[INFO] [stderr] 73 |   fn from(err: serde_json::error::Error) -> Self {
[INFO] [stderr]    |           ^^^ help: consider prefixing with an underscore: `_err`
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `message`
[INFO] [stderr]   --> src/message.rs:40:3
[INFO] [stderr]    |
[INFO] [stderr] 40 |   fn message(from: &str, to: &str, content: &str) -> Self {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `error`
[INFO] [stderr]   --> src/message.rs:48:3
[INFO] [stderr]    |
[INFO] [stderr] 48 |   pub fn error(msg: &str) -> Self {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `message`
[INFO] [stderr]   --> src/message.rs:40:3
[INFO] [stderr]    |
[INFO] [stderr] 40 |   fn message(from: &str, to: &str, content: &str) -> Self {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `error`
[INFO] [stderr]   --> src/message.rs:48:3
[INFO] [stderr]    |
[INFO] [stderr] 48 |   pub fn error(msg: &str) -> Self {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 40.95s
[INFO] running `"docker" "inspect" "b3ba0e6d512c630b01f85b0b3117ca61ec6d93188f118533311701171b83cf67"`
[INFO] running `"docker" "rm" "-f" "b3ba0e6d512c630b01f85b0b3117ca61ec6d93188f118533311701171b83cf67"`
[INFO] [stdout] b3ba0e6d512c630b01f85b0b3117ca61ec6d93188f118533311701171b83cf67