[INFO] fetching crate pi_slab 0.1.0...
[INFO] building pi_slab-0.1.0 against try#4987e9d4227139400384ab59296ffee3b0fb1183 for pr-146237-2
[INFO] extracting crate pi_slab 0.1.0 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate pi_slab 0.1.0
[INFO] finished tweaking crates.io crate pi_slab 0.1.0
[INFO] tweaked toml for crates.io crate pi_slab 0.1.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate pi_slab 0.1.0 on toolchain 4987e9d4227139400384ab59296ffee3b0fb1183
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 624c4682f18ac5a94e480ba84471c4806efc65687b0680319c38d89f77c6e6fc
[INFO] running `Command { std: "docker" "start" "-a" "624c4682f18ac5a94e480ba84471c4806efc65687b0680319c38d89f77c6e6fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "624c4682f18ac5a94e480ba84471c4806efc65687b0680319c38d89f77c6e6fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "624c4682f18ac5a94e480ba84471c4806efc65687b0680319c38d89f77c6e6fc", kill_on_drop: false }`
[INFO] [stdout] 624c4682f18ac5a94e480ba84471c4806efc65687b0680319c38d89f77c6e6fc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 34989b9361fbb5776bfae56a73650fcd2ebb1d2931ddf5e754e0b87994f4cdf5
[INFO] running `Command { std: "docker" "start" "-a" "34989b9361fbb5776bfae56a73650fcd2ebb1d2931ddf5e754e0b87994f4cdf5", kill_on_drop: false }`
[INFO] [stderr]    Compiling pi_slab v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: implicit autoref creates a reference to the dereference of a raw pointer
[INFO] [stdout]    --> src/lib.rs:504:52
[INFO] [stdout]     |
[INFO] [stdout] 504 |                 return Some((curr + 1, unsafe{&mut (*self.entries)[curr]} ));
[INFO] [stdout]     |                                                    ^^------------^^^^^^^
[INFO] [stdout]     |                                                      |
[INFO] [stdout]     |                                                      this raw pointer has type `*mut Vec<T>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: creating a reference requires the pointer target to be valid and imposes aliasing requirements
[INFO] [stdout] note: autoref is being applied to this expression, resulting in: `&mut Vec<T>`
[INFO] [stdout]    --> src/lib.rs:504:52
[INFO] [stdout]     |
[INFO] [stdout] 504 |                 return Some((curr + 1, unsafe{&mut (*self.entries)[curr]} ));
[INFO] [stdout]     |                                                    ^^^^^^^^^^^^^^^
[INFO] [stdout]     = note: `#[deny(dangerous_implicit_autorefs)]` on by default
[INFO] [stdout] help: try using a raw pointer method instead; or if this reference is intentional, make it explicit
[INFO] [stdout]     |
[INFO] [stdout] 504 |                 return Some((curr + 1, unsafe{&mut (&mut (*self.entries))[curr]} ));
[INFO] [stdout]     |                                                    +++++                +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `pi_slab` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "34989b9361fbb5776bfae56a73650fcd2ebb1d2931ddf5e754e0b87994f4cdf5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "34989b9361fbb5776bfae56a73650fcd2ebb1d2931ddf5e754e0b87994f4cdf5", kill_on_drop: false }`
[INFO] [stdout] 34989b9361fbb5776bfae56a73650fcd2ebb1d2931ddf5e754e0b87994f4cdf5