[INFO] cloning repository https://github.com/t3m8ch-plugins/backend
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/t3m8ch-plugins/backend" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ft3m8ch-plugins%2Fbackend", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ft3m8ch-plugins%2Fbackend'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e366abf5def91e5d543e8aaf0986d09cb7b2201c
[INFO] checking t3m8ch-plugins/backend against try#3a4cb0edb4040379c037e06efeb5409e44be7b77 for pr-146377
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ft3m8ch-plugins%2Fbackend" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/t3m8ch-plugins/backend
[INFO] finished tweaking git repo https://github.com/t3m8ch-plugins/backend
[INFO] tweaked toml for git repo https://github.com/t3m8ch-plugins/backend written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/t3m8ch-plugins/backend on toolchain 3a4cb0edb4040379c037e06efeb5409e44be7b77
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4cb0edb4040379c037e06efeb5409e44be7b77" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/t3m8ch-plugins/backend already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4cb0edb4040379c037e06efeb5409e44be7b77" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+3a4cb0edb4040379c037e06efeb5409e44be7b77" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3fce9dd43c5f426472c2569712f94aca77af10119f20d8e6ccaddacd5ad8262b
[INFO] running `Command { std: "docker" "start" "-a" "3fce9dd43c5f426472c2569712f94aca77af10119f20d8e6ccaddacd5ad8262b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3fce9dd43c5f426472c2569712f94aca77af10119f20d8e6ccaddacd5ad8262b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3fce9dd43c5f426472c2569712f94aca77af10119f20d8e6ccaddacd5ad8262b", kill_on_drop: false }`
[INFO] [stdout] 3fce9dd43c5f426472c2569712f94aca77af10119f20d8e6ccaddacd5ad8262b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+3a4cb0edb4040379c037e06efeb5409e44be7b77" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 60854b2fa90288a06346827104b6b259c5b1b1f289602389924b182b1815213d
[INFO] running `Command { std: "docker" "start" "-a" "60854b2fa90288a06346827104b6b259c5b1b1f289602389924b182b1815213d", kill_on_drop: false }`
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[INFO] [stderr]     Checking backend v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/api/ws.rs:7:20
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let (response, mut session, mut msg_stream) = actix_ws::handle(&req, body)?;
[INFO] [stdout]   |                    ----^^^^^^^
[INFO] [stdout]   |                    |
[INFO] [stdout]   |                    help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/api/ws.rs:7:20
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let (response, mut session, mut msg_stream) = actix_ws::handle(&req, body)?;
[INFO] [stdout]   |                    ----^^^^^^^
[INFO] [stdout]   |                    |
[INFO] [stdout]   |                    help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 58s
[INFO] running `Command { std: "docker" "inspect" "60854b2fa90288a06346827104b6b259c5b1b1f289602389924b182b1815213d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "60854b2fa90288a06346827104b6b259c5b1b1f289602389924b182b1815213d", kill_on_drop: false }`
[INFO] [stdout] 60854b2fa90288a06346827104b6b259c5b1b1f289602389924b182b1815213d