[INFO] fetching crate ctypes 0.0.1...
[INFO] testing ctypes-0.0.1 against try#8262275854dc0e5381c9d42d56257d94932c5a87 for pr-90799
[INFO] extracting crate ctypes 0.0.1 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate ctypes 0.0.1 on toolchain 8262275854dc0e5381c9d42d56257d94932c5a87
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ctypes 0.0.1
[INFO] finished tweaking crates.io crate ctypes 0.0.1
[INFO] tweaked toml for crates.io crate ctypes 0.0.1 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 079fcc84b9a85cd2930cd1f5151af46564fb2eabfe3aa6957cb9a314f0bdba4f
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "079fcc84b9a85cd2930cd1f5151af46564fb2eabfe3aa6957cb9a314f0bdba4f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "079fcc84b9a85cd2930cd1f5151af46564fb2eabfe3aa6957cb9a314f0bdba4f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "079fcc84b9a85cd2930cd1f5151af46564fb2eabfe3aa6957cb9a314f0bdba4f", kill_on_drop: false }`
[INFO] [stdout] 079fcc84b9a85cd2930cd1f5151af46564fb2eabfe3aa6957cb9a314f0bdba4f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 18801e67b6d2ed1a2d429779412d5b95842d27c5c76dd5d502dbfeb31e491fdc
[INFO] running `Command { std: "docker" "start" "-a" "18801e67b6d2ed1a2d429779412d5b95842d27c5c76dd5d502dbfeb31e491fdc", kill_on_drop: false }`
[INFO] [stderr]    Compiling ctypes v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0259]: the name `core` is defined multiple times
[INFO] [stdout]   --> src/lib.rs:31:1
[INFO] [stdout]    |
[INFO] [stdout] 31 | extern crate core;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^ `core` reimported here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `core` must be defined only once in the type namespace of this module
[INFO] [stdout] help: you can use `as` to change the binding name of the import
[INFO] [stdout]    |
[INFO] [stdout] 31 | extern crate core as other_core;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0259`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ctypes` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "18801e67b6d2ed1a2d429779412d5b95842d27c5c76dd5d502dbfeb31e491fdc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "18801e67b6d2ed1a2d429779412d5b95842d27c5c76dd5d502dbfeb31e491fdc", kill_on_drop: false }`
[INFO] [stdout] 18801e67b6d2ed1a2d429779412d5b95842d27c5c76dd5d502dbfeb31e491fdc