[INFO] cloning repository https://github.com/vlakreeh/discord_rust_playground
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/vlakreeh/discord_rust_playground" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvlakreeh%2Fdiscord_rust_playground"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvlakreeh%2Fdiscord_rust_playground'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] cf8b766db56656069d236a3742cee1705ef832a8
[INFO] checking vlakreeh/discord_rust_playground against master#45d050cde277b22a755847338f2acc2c7b834141 for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvlakreeh%2Fdiscord_rust_playground" "/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/vlakreeh/discord_rust_playground on toolchain 45d050cde277b22a755847338f2acc2c7b834141
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/vlakreeh/discord_rust_playground
[INFO] finished tweaking git repo https://github.com/vlakreeh/discord_rust_playground
[INFO] tweaked toml for git repo https://github.com/vlakreeh/discord_rust_playground written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/vlakreeh/discord_rust_playground already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "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" "+45d050cde277b22a755847338f2acc2c7b834141" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 80d3727cab4a7f53012c745552fba52cb23793082ad22a5c486997c2bb2088b9
[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" "80d3727cab4a7f53012c745552fba52cb23793082ad22a5c486997c2bb2088b9"`
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[INFO] [stderr]     Checking discord_rust_playground v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `super::*`
[INFO] [stderr]    --> src/playground/mod.rs:112:9
[INFO] [stderr]     |
[INFO] [stderr] 112 |     use super::*;
[INFO] [stderr]     |         ^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Beta`
[INFO] [stderr]   --> src/playground/mod.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     Beta,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Nightly`
[INFO] [stderr]   --> src/playground/mod.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     Nightly,
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Beta`
[INFO] [stderr]   --> src/playground/mod.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     Beta,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Nightly`
[INFO] [stderr]   --> src/playground/mod.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     Nightly,
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 24s
[INFO] running `"docker" "inspect" "80d3727cab4a7f53012c745552fba52cb23793082ad22a5c486997c2bb2088b9"`
[INFO] running `"docker" "rm" "-f" "80d3727cab4a7f53012c745552fba52cb23793082ad22a5c486997c2bb2088b9"`
[INFO] [stdout] 80d3727cab4a7f53012c745552fba52cb23793082ad22a5c486997c2bb2088b9