[INFO] updating cached repository https://github.com/recapitalverb/lightrays
[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] d5c1181efba0c677e92f3818e1c8e27cf5dae3fb
[INFO] checking recapitalverb/lightrays against try#13f916f63bc6575d5ff1f989237dfabe88981368 for pr-69880
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frecapitalverb%2Flightrays" "/workspace/builds/worker-4/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/recapitalverb/lightrays on toolchain 13f916f63bc6575d5ff1f989237dfabe88981368
[INFO] running `"/workspace/cargo-home/bin/cargo" "+13f916f63bc6575d5ff1f989237dfabe88981368" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/recapitalverb/lightrays
[INFO] finished tweaking git repo https://github.com/recapitalverb/lightrays
[INFO] tweaked toml for git repo https://github.com/recapitalverb/lightrays written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/recapitalverb/lightrays already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+13f916f63bc6575d5ff1f989237dfabe88981368" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+13f916f63bc6575d5ff1f989237dfabe88981368" "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] 85bc9111cc0cf1a52a8aa00baf3c3171e9e14a50be6d49c7e8ffcfe8e6ef433d
[INFO] running `"docker" "start" "-a" "85bc9111cc0cf1a52a8aa00baf3c3171e9e14a50be6d49c7e8ffcfe8e6ef433d"`
[INFO] [stderr]     Checking ring v0.16.11
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking tokio v0.2.11
[INFO] [stderr]    Compiling command_attr v0.1.7
[INFO] [stderr]     Checking futures-util v0.3.4
[INFO] [stderr]     Checking serde_urlencoded v0.6.1
[INFO] [stderr]     Checking chrono v0.4.10
[INFO] [stderr]     Checking http v0.1.21
[INFO] [stderr]     Checking input_buffer v0.2.0
[INFO] [stderr]     Checking webpki v0.21.2
[INFO] [stderr]     Checking sct v0.6.0
[INFO] [stderr]     Checking ct-logs v0.6.0
[INFO] [stderr]     Checking rustls v0.16.0
[INFO] [stderr]     Checking webpki-roots v0.17.0
[INFO] [stderr]     Checking webpki-roots v0.18.0
[INFO] [stderr]     Checking tokio-util v0.2.0
[INFO] [stderr]     Checking tungstenite v0.9.2
[INFO] [stderr]     Checking h2 v0.2.1
[INFO] [stderr]     Checking tokio-rustls v0.12.2
[INFO] [stderr]     Checking rustls-native-certs v0.1.0
[INFO] [stderr]     Checking hyper v0.13.2
[INFO] [stderr]     Checking hyper-rustls v0.19.1
[INFO] [stderr]     Checking reqwest v0.10.1
[INFO] [stderr]     Checking serenity v0.8.0
[INFO] [stderr]     Checking lightrays v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `ctx`
[INFO] [stderr]   --> src/commands/help.rs:12:48
[INFO] [stderr]    |
[INFO] [stderr] 12 |             Box::new(|lf: &LightraysFramework, ctx: &mut Context, msg: &Message, args: Vec<&str>| {
[INFO] [stderr]    |                                                ^^^ help: consider prefixing with an underscore: `_ctx`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `msg`
[INFO] [stderr]   --> src/commands/help.rs:12:67
[INFO] [stderr]    |
[INFO] [stderr] 12 |             Box::new(|lf: &LightraysFramework, ctx: &mut Context, msg: &Message, args: Vec<&str>| {
[INFO] [stderr]    |                                                                   ^^^ help: consider prefixing with an underscore: `_msg`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `args`
[INFO] [stderr]   --> src/commands/help.rs:12:82
[INFO] [stderr]    |
[INFO] [stderr] 12 |             Box::new(|lf: &LightraysFramework, ctx: &mut Context, msg: &Message, args: Vec<&str>| {
[INFO] [stderr]    |                                                                                  ^^^^ help: consider prefixing with an underscore: `_args`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ctx`
[INFO] [stderr]   --> src/commands/help.rs:12:48
[INFO] [stderr]    |
[INFO] [stderr] 12 |             Box::new(|lf: &LightraysFramework, ctx: &mut Context, msg: &Message, args: Vec<&str>| {
[INFO] [stderr]    |                                                ^^^ help: consider prefixing with an underscore: `_ctx`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `msg`
[INFO] [stderr]   --> src/commands/help.rs:12:67
[INFO] [stderr]    |
[INFO] [stderr] 12 |             Box::new(|lf: &LightraysFramework, ctx: &mut Context, msg: &Message, args: Vec<&str>| {
[INFO] [stderr]    |                                                                   ^^^ help: consider prefixing with an underscore: `_msg`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `args`
[INFO] [stderr]   --> src/commands/help.rs:12:82
[INFO] [stderr]    |
[INFO] [stderr] 12 |             Box::new(|lf: &LightraysFramework, ctx: &mut Context, msg: &Message, args: Vec<&str>| {
[INFO] [stderr]    |                                                                                  ^^^^ help: consider prefixing with an underscore: `_args`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 08s
[INFO] running `"docker" "inspect" "85bc9111cc0cf1a52a8aa00baf3c3171e9e14a50be6d49c7e8ffcfe8e6ef433d"`
[INFO] running `"docker" "rm" "-f" "85bc9111cc0cf1a52a8aa00baf3c3171e9e14a50be6d49c7e8ffcfe8e6ef433d"`
[INFO] [stdout] 85bc9111cc0cf1a52a8aa00baf3c3171e9e14a50be6d49c7e8ffcfe8e6ef433d