[INFO] cloning repository https://github.com/exldna/serial
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/exldna/serial" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fexldna%2Fserial", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fexldna%2Fserial'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 53aee042b903e9686a548f2bf7c3029953e2031c
[INFO] building exldna/serial against try#8b8eff55bd72abbb57167bc42222a7f91d41cb0d for pr-142134-abi-ast-error
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fexldna%2Fserial" "/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/exldna/serial on toolchain 8b8eff55bd72abbb57167bc42222a7f91d41cb0d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-7-tc2/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/exldna/serial
[INFO] finished tweaking git repo https://github.com/exldna/serial
[INFO] tweaked toml for git repo https://github.com/exldna/serial written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/exldna/serial 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" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5c3d6a260898a77c39456015f03132408f83f5bb416b83b1cc1ca52760506efa
[INFO] running `Command { std: "docker" "start" "-a" "5c3d6a260898a77c39456015f03132408f83f5bb416b83b1cc1ca52760506efa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5c3d6a260898a77c39456015f03132408f83f5bb416b83b1cc1ca52760506efa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5c3d6a260898a77c39456015f03132408f83f5bb416b83b1cc1ca52760506efa", kill_on_drop: false }`
[INFO] [stdout] 5c3d6a260898a77c39456015f03132408f83f5bb416b83b1cc1ca52760506efa
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 282653662a3494b12d150e75bd553ea2508f945b328be695e7b1982c315fcd82
[INFO] running `Command { std: "docker" "start" "-a" "282653662a3494b12d150e75bd553ea2508f945b328be695e7b1982c315fcd82", kill_on_drop: false }`
[INFO] [stderr]    Compiling serial v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: implicit autoref creates a reference to the dereference of a raw pointer
[INFO] [stdout]    --> src/vec.rs:148:30
[INFO] [stdout]     |
[INFO] [stdout] 148 |         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.rs:148:30
[INFO] [stdout]     |
[INFO] [stdout] 148 |         let count = unsafe { (*other).len() };
[INFO] [stdout]     |                              ^^^^^^^^
[INFO] [stdout] note: method calls to `len` require a reference
[INFO] [stdout]    --> /rustc/8b8eff55bd72abbb57167bc42222a7f91d41cb0d/library/core/src/slice/mod.rs:115:5
[INFO] [stdout]     = note: `#[warn(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] 148 |         let count = unsafe { (&(*other)).len() };
[INFO] [stdout]     |                              ++        +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.23s
[INFO] running `Command { std: "docker" "inspect" "282653662a3494b12d150e75bd553ea2508f945b328be695e7b1982c315fcd82", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "282653662a3494b12d150e75bd553ea2508f945b328be695e7b1982c315fcd82", kill_on_drop: false }`
[INFO] [stdout] 282653662a3494b12d150e75bd553ea2508f945b328be695e7b1982c315fcd82
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+8b8eff55bd72abbb57167bc42222a7f91d41cb0d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6c1bcabd60b6bf018b3f60f4be33796561440b71da441f75e6d3a6b62e91f671
[INFO] running `Command { std: "docker" "start" "-a" "6c1bcabd60b6bf018b3f60f4be33796561440b71da441f75e6d3a6b62e91f671", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling ppv-lite86 v0.2.17
[INFO] [stdout] warning: implicit autoref creates a reference to the dereference of a raw pointer
[INFO] [stdout]    --> src/vec.rs:148:30
[INFO] [stdout]     |
[INFO] [stdout] 148 |         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.rs:148:30
[INFO] [stdout]     |
[INFO] [stdout] 148 |         let count = unsafe { (*other).len() };
[INFO] [stdout]     |                              ^^^^^^^^
[INFO] [stdout] note: method calls to `len` require a reference
[INFO] [stdout]    --> /rustc/8b8eff55bd72abbb57167bc42222a7f91d41cb0d/library/core/src/slice/mod.rs:115:5
[INFO] [stdout]     = note: `#[warn(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] 148 |         let count = unsafe { (&(*other)).len() };
[INFO] [stdout]     |                              ++        +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling getrandom v0.2.12
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling utils v0.1.0 (/opt/rustwide/workdir/tests/utils)
[INFO] [stderr]    Compiling serial v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: implicit autoref creates a reference to the dereference of a raw pointer
[INFO] [stdout]    --> src/vec.rs:148:30
[INFO] [stdout]     |
[INFO] [stdout] 148 |         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.rs:148:30
[INFO] [stdout]     |
[INFO] [stdout] 148 |         let count = unsafe { (*other).len() };
[INFO] [stdout]     |                              ^^^^^^^^
[INFO] [stdout] note: method calls to `len` require a reference
[INFO] [stdout]    --> /rustc/8b8eff55bd72abbb57167bc42222a7f91d41cb0d/library/core/src/slice/mod.rs:115:5
[INFO] [stdout]     = note: `#[warn(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] 148 |         let count = unsafe { (&(*other)).len() };
[INFO] [stdout]     |                              ++        +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 3.29s
[INFO] running `Command { std: "docker" "inspect" "6c1bcabd60b6bf018b3f60f4be33796561440b71da441f75e6d3a6b62e91f671", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6c1bcabd60b6bf018b3f60f4be33796561440b71da441f75e6d3a6b62e91f671", kill_on_drop: false }`
[INFO] [stdout] 6c1bcabd60b6bf018b3f60f4be33796561440b71da441f75e6d3a6b62e91f671