[INFO] fetching crate allocator-api2 0.3.0...
[INFO] checking allocator-api2-0.3.0 against try#a2a6e871b05c7b8ecc9a3c8a20db1f39e995e399 for pr-145770
[INFO] extracting crate allocator-api2 0.3.0 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate allocator-api2 0.3.0
[INFO] finished tweaking crates.io crate allocator-api2 0.3.0
[INFO] tweaked toml for crates.io crate allocator-api2 0.3.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate allocator-api2 0.3.0 on toolchain a2a6e871b05c7b8ecc9a3c8a20db1f39e995e399
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a2a6e871b05c7b8ecc9a3c8a20db1f39e995e399" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate allocator-api2 0.3.0 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" "+a2a6e871b05c7b8ecc9a3c8a20db1f39e995e399" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a2a6e871b05c7b8ecc9a3c8a20db1f39e995e399" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 796e1334201c50fff4387b385acefa60981a31faf7facb9edaf6e169e87c6717
[INFO] running `Command { std: "docker" "start" "-a" "796e1334201c50fff4387b385acefa60981a31faf7facb9edaf6e169e87c6717", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "796e1334201c50fff4387b385acefa60981a31faf7facb9edaf6e169e87c6717", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "796e1334201c50fff4387b385acefa60981a31faf7facb9edaf6e169e87c6717", kill_on_drop: false }`
[INFO] [stdout] 796e1334201c50fff4387b385acefa60981a31faf7facb9edaf6e169e87c6717
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a2a6e871b05c7b8ecc9a3c8a20db1f39e995e399" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 31da90e19e687463bd14a1abb30045f3e8d7a5df6c204f3e416aa49374b52820
[INFO] running `Command { std: "docker" "start" "-a" "31da90e19e687463bd14a1abb30045f3e8d7a5df6c204f3e416aa49374b52820", kill_on_drop: false }`
[INFO] [stderr]     Checking allocator-api2 v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: implicit autoref creates a reference to the dereference of a raw pointer
[INFO] [stdout]     --> src/vec/mod.rs:1902:30
[INFO] [stdout]      |
[INFO] [stdout] 1902 |         let count = unsafe { (*other).len() };
[INFO] [stdout]      |                              ^^-----^^^^^^^
[INFO] [stdout]      |                                |
[INFO] [stdout]      |                                this raw pointer has type `*const [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/vec/mod.rs:1902:30
[INFO] [stdout]      |
[INFO] [stdout] 1902 |         let count = unsafe { (*other).len() };
[INFO] [stdout]      |                              ^^^^^^^^
[INFO] [stdout] note: method calls to `len` require a reference
[INFO] [stdout]     --> /rustc/a2a6e871b05c7b8ecc9a3c8a20db1f39e995e399/library/core/src/slice/mod.rs:116:5
[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] 1902 |         let count = unsafe { (&(*other)).len() };
[INFO] [stdout]      |                              ++        +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `allocator-api2` (lib test) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: implicit autoref creates a reference to the dereference of a raw pointer
[INFO] [stdout]     --> src/vec/mod.rs:1902:30
[INFO] [stdout]      |
[INFO] [stdout] 1902 |         let count = unsafe { (*other).len() };
[INFO] [stdout]      |                              ^^-----^^^^^^^
[INFO] [stdout]      |                                |
[INFO] [stdout]      |                                this raw pointer has type `*const [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/vec/mod.rs:1902:30
[INFO] [stdout]      |
[INFO] [stdout] 1902 |         let count = unsafe { (*other).len() };
[INFO] [stdout]      |                              ^^^^^^^^
[INFO] [stdout] note: method calls to `len` require a reference
[INFO] [stdout]     --> /rustc/a2a6e871b05c7b8ecc9a3c8a20db1f39e995e399/library/core/src/slice/mod.rs:116:5
[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] 1902 |         let count = unsafe { (&(*other)).len() };
[INFO] [stdout]      |                              ++        +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `allocator-api2` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "31da90e19e687463bd14a1abb30045f3e8d7a5df6c204f3e416aa49374b52820", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "31da90e19e687463bd14a1abb30045f3e8d7a5df6c204f3e416aa49374b52820", kill_on_drop: false }`
[INFO] [stdout] 31da90e19e687463bd14a1abb30045f3e8d7a5df6c204f3e416aa49374b52820
