[INFO] fetching crate rc_collections 0.1.0...
[INFO] testing rc_collections-0.1.0 against try#dec9417b8611e34e787a3e4c37686b5131f9e5c5 for pr-154210-2
[INFO] extracting crate rc_collections 0.1.0 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate rc_collections 0.1.0
[INFO] finished tweaking crates.io crate rc_collections 0.1.0
[INFO] tweaked toml for crates.io crate rc_collections 0.1.0 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate rc_collections 0.1.0 on toolchain dec9417b8611e34e787a3e4c37686b5131f9e5c5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate rc_collections 0.1.0 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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cd34bdd4f73044995a8cb32e26f1bc1eb70ed5731935c4ea84fbde974535ec23
[INFO] running `Command { std: "docker" "start" "-a" "cd34bdd4f73044995a8cb32e26f1bc1eb70ed5731935c4ea84fbde974535ec23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cd34bdd4f73044995a8cb32e26f1bc1eb70ed5731935c4ea84fbde974535ec23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cd34bdd4f73044995a8cb32e26f1bc1eb70ed5731935c4ea84fbde974535ec23", kill_on_drop: false }`
[INFO] [stdout] cd34bdd4f73044995a8cb32e26f1bc1eb70ed5731935c4ea84fbde974535ec23
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 948f8f5a6313f12684f93d32e4c9f4640c069675179ad001257c5deae8c55b13
[INFO] running `Command { std: "docker" "start" "-a" "948f8f5a6313f12684f93d32e4c9f4640c069675179ad001257c5deae8c55b13", kill_on_drop: false }`
[INFO] [stderr]    Compiling rc_collections v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: implicit autoref creates a reference to the dereference of a raw pointer
[INFO] [stdout]    --> src/arc_string.rs:194:19
[INFO] [stdout]     |
[INFO] [stdout] 194 |         unsafe { &(*self.inner.as_ptr()).string[..self.len] }
[INFO] [stdout]     |                   ^^-------------------^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     this raw pointer has type `*mut arc_string::Inner`
[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: `&str`
[INFO] [stdout]    --> src/arc_string.rs:194:19
[INFO] [stdout]     |
[INFO] [stdout] 194 |         unsafe { &(*self.inner.as_ptr()).string[..self.len] }
[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] 194 |         unsafe { &(&(*self.inner.as_ptr()).string)[..self.len] }
[INFO] [stdout]     |                   ++                             +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: implicit autoref creates a reference to the dereference of a raw pointer
[INFO] [stdout]    --> src/rc_string.rs:189:19
[INFO] [stdout]     |
[INFO] [stdout] 189 |         unsafe { &(*self.inner.as_ptr()).string[..self.len] }
[INFO] [stdout]     |                   ^^-------------------^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     this raw pointer has type `*mut rc_string::Inner`
[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: `&str`
[INFO] [stdout]    --> src/rc_string.rs:189:19
[INFO] [stdout]     |
[INFO] [stdout] 189 |         unsafe { &(*self.inner.as_ptr()).string[..self.len] }
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] help: try using a raw pointer method instead; or if this reference is intentional, make it explicit
[INFO] [stdout]     |
[INFO] [stdout] 189 |         unsafe { &(&(*self.inner.as_ptr()).string)[..self.len] }
[INFO] [stdout]     |                   ++                             +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: implicit autoref creates a reference to the dereference of a raw pointer
[INFO] [stdout]    --> src/rc_vec.rs:181:19
[INFO] [stdout]     |
[INFO] [stdout] 181 |         unsafe { &(*self.inner.as_ptr()).slice[..self.len] }
[INFO] [stdout]     |                   ^^-------------------^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     this raw pointer has type `*mut rc_vec::Inner<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: `&[T]`
[INFO] [stdout]    --> src/rc_vec.rs:181:19
[INFO] [stdout]     |
[INFO] [stdout] 181 |         unsafe { &(*self.inner.as_ptr()).slice[..self.len] }
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] help: try using a raw pointer method instead; or if this reference is intentional, make it explicit
[INFO] [stdout]     |
[INFO] [stdout] 181 |         unsafe { &(&(*self.inner.as_ptr()).slice)[..self.len] }
[INFO] [stdout]     |                   ++                            +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rc_collections` (lib) due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "948f8f5a6313f12684f93d32e4c9f4640c069675179ad001257c5deae8c55b13", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "948f8f5a6313f12684f93d32e4c9f4640c069675179ad001257c5deae8c55b13", kill_on_drop: false }`
[INFO] [stdout] 948f8f5a6313f12684f93d32e4c9f4640c069675179ad001257c5deae8c55b13