[INFO] cloning repository https://github.com/dockcy/learning_async
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dockcy/learning_async" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdockcy%2Flearning_async", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdockcy%2Flearning_async'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9c377ea2cb6ff8bdb78dcb36666f102760127632
[INFO] checking dockcy/learning_async against master#8424f8e8cdf07010967a57584fd647b30e930d4d for pr-120095
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdockcy%2Flearning_async" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dockcy/learning_async on toolchain 8424f8e8cdf07010967a57584fd647b30e930d4d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8424f8e8cdf07010967a57584fd647b30e930d4d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/dockcy/learning_async
[INFO] finished tweaking git repo https://github.com/dockcy/learning_async
[INFO] tweaked toml for git repo https://github.com/dockcy/learning_async written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/dockcy/learning_async 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" "+8424f8e8cdf07010967a57584fd647b30e930d4d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+8424f8e8cdf07010967a57584fd647b30e930d4d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8316bb516694d00ede7441c85767a9edf162214e1077f47a6042c6fef9606471
[INFO] running `Command { std: "docker" "start" "-a" "8316bb516694d00ede7441c85767a9edf162214e1077f47a6042c6fef9606471", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8316bb516694d00ede7441c85767a9edf162214e1077f47a6042c6fef9606471", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8316bb516694d00ede7441c85767a9edf162214e1077f47a6042c6fef9606471", kill_on_drop: false }`
[INFO] [stdout] 8316bb516694d00ede7441c85767a9edf162214e1077f47a6042c6fef9606471
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+8424f8e8cdf07010967a57584fd647b30e930d4d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 27e3245d1fa6fd91e1e58b57862850c515e6c631bde3e9c93fc1a0f56f87ec12
[INFO] running `Command { std: "docker" "start" "-a" "27e3245d1fa6fd91e1e58b57862850c515e6c631bde3e9c93fc1a0f56f87ec12", kill_on_drop: false }`
[INFO] [stderr]     Checking learning_async v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] running `Command { std: "docker" "inspect" "27e3245d1fa6fd91e1e58b57862850c515e6c631bde3e9c93fc1a0f56f87ec12", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "27e3245d1fa6fd91e1e58b57862850c515e6c631bde3e9c93fc1a0f56f87ec12", kill_on_drop: false }`
[INFO] [stdout] 27e3245d1fa6fd91e1e58b57862850c515e6c631bde3e9c93fc1a0f56f87ec12
[INFO] checking dockcy/learning_async against try#047472f299946caf090d1b5608ae4bd9f0416256+rustflags=-Ddereferencing_mut_binding for pr-120095
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdockcy%2Flearning_async" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dockcy/learning_async on toolchain 047472f299946caf090d1b5608ae4bd9f0416256
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+047472f299946caf090d1b5608ae4bd9f0416256" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/dockcy/learning_async
[INFO] finished tweaking git repo https://github.com/dockcy/learning_async
[INFO] tweaked toml for git repo https://github.com/dockcy/learning_async written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/dockcy/learning_async 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" "+047472f299946caf090d1b5608ae4bd9f0416256" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+047472f299946caf090d1b5608ae4bd9f0416256" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 933c8174eada01b832fc494fccc9e46fdc074136e466b63087027d58db1c64b0
[INFO] running `Command { std: "docker" "start" "-a" "933c8174eada01b832fc494fccc9e46fdc074136e466b63087027d58db1c64b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "933c8174eada01b832fc494fccc9e46fdc074136e466b63087027d58db1c64b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "933c8174eada01b832fc494fccc9e46fdc074136e466b63087027d58db1c64b0", kill_on_drop: false }`
[INFO] [stdout] 933c8174eada01b832fc494fccc9e46fdc074136e466b63087027d58db1c64b0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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 -Ddereferencing_mut_binding" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+047472f299946caf090d1b5608ae4bd9f0416256" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4a162233c28f9f169e794a8cd9603003b342e12e6f1e061abd8dcde7c397c00d
[INFO] running `Command { std: "docker" "start" "-a" "4a162233c28f9f169e794a8cd9603003b342e12e6f1e061abd8dcde7c397c00d", kill_on_drop: false }`
[INFO] [stderr]     Checking learning_async v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: dereferencing `mut` binding
[INFO] [stdout]   --> src/bin/non_blocking.rs:84:45
[INFO] [stdout]    |
[INFO] [stdout] 84 |             if let ConnectionState::Write { mut response, written_point } = state {
[INFO] [stdout]    |                                             ^^^^^^^^^^^^ `mut` dereferences the type of this binding
[INFO] [stdout]    |
[INFO] [stdout] help: this will change in edition 2024
[INFO] [stdout]   --> src/bin/non_blocking.rs:84:45
[INFO] [stdout]    |
[INFO] [stdout] 84 |             if let ConnectionState::Write { mut response, written_point } = state {
[INFO] [stdout]    |                                             ^^^^^^^^^^^^
[INFO] [stdout]    = note: requested on the command line with `-D dereferencing-mut-binding`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: dereferencing `mut` binding
[INFO] [stdout]   --> src/bin/non_blocking.rs:84:45
[INFO] [stdout]    |
[INFO] [stdout] 84 |             if let ConnectionState::Write { mut response, written_point } = state {
[INFO] [stdout]    |                                             ^^^^^^^^^^^^ `mut` dereferences the type of this binding
[INFO] [stdout]    |
[INFO] [stdout] help: this will change in edition 2024
[INFO] [stdout]   --> src/bin/non_blocking.rs:84:45
[INFO] [stdout]    |
[INFO] [stdout] 84 |             if let ConnectionState::Write { mut response, written_point } = state {
[INFO] [stdout]    |                                             ^^^^^^^^^^^^
[INFO] [stdout]    = note: requested on the command line with `-D dereferencing-mut-binding`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `learning_async` (bin "non_blocking") due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `learning_async` (bin "non_blocking" test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "4a162233c28f9f169e794a8cd9603003b342e12e6f1e061abd8dcde7c397c00d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4a162233c28f9f169e794a8cd9603003b342e12e6f1e061abd8dcde7c397c00d", kill_on_drop: false }`
[INFO] [stdout] 4a162233c28f9f169e794a8cd9603003b342e12e6f1e061abd8dcde7c397c00d