[INFO] fetching crate mcinterface 0.3.2...
[INFO] checking mcinterface-0.3.2 against master#64b185eddaa1d7ddf5e0c024be23b9cbba6c1722 for pr-143929
[INFO] extracting crate mcinterface 0.3.2 into /workspace/builds/worker-5-tc1/source
[INFO] started tweaking crates.io crate mcinterface 0.3.2
[INFO] finished tweaking crates.io crate mcinterface 0.3.2
[INFO] tweaked toml for crates.io crate mcinterface 0.3.2 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate mcinterface 0.3.2 on toolchain 64b185eddaa1d7ddf5e0c024be23b9cbba6c1722
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+64b185eddaa1d7ddf5e0c024be23b9cbba6c1722" "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" "+64b185eddaa1d7ddf5e0c024be23b9cbba6c1722" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+64b185eddaa1d7ddf5e0c024be23b9cbba6c1722" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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:e8955075918b6d00525c617f7c34ee2595c70db70b3cf844dc875e4d3604499b" "/opt/rustwide/cargo-home/bin/cargo" "+64b185eddaa1d7ddf5e0c024be23b9cbba6c1722" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 358c813b1cc0cf1dfb0879b39de7be0e507c7c32995af8cec51d4a7cfaaa798d
[INFO] running `Command { std: "docker" "start" "-a" "358c813b1cc0cf1dfb0879b39de7be0e507c7c32995af8cec51d4a7cfaaa798d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "358c813b1cc0cf1dfb0879b39de7be0e507c7c32995af8cec51d4a7cfaaa798d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "358c813b1cc0cf1dfb0879b39de7be0e507c7c32995af8cec51d4a7cfaaa798d", kill_on_drop: false }`
[INFO] [stdout] 358c813b1cc0cf1dfb0879b39de7be0e507c7c32995af8cec51d4a7cfaaa798d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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:e8955075918b6d00525c617f7c34ee2595c70db70b3cf844dc875e4d3604499b" "/opt/rustwide/cargo-home/bin/cargo" "+64b185eddaa1d7ddf5e0c024be23b9cbba6c1722" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 234cfecf513d0fd923d0be6bf9838d24b70eaf0258c96db97d98c148a44995f1
[INFO] running `Command { std: "docker" "start" "-a" "234cfecf513d0fd923d0be6bf9838d24b70eaf0258c96db97d98c148a44995f1", kill_on_drop: false }`
[INFO] [stderr]     Checking mcinterface v0.3.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `extern` declarations without an explicit ABI are deprecated
[INFO] [stdout]   --> src/lib.rs:68:1
[INFO] [stdout]    |
[INFO] [stdout] 68 | extern {
[INFO] [stdout]    | ^^^^^^ help: explicitly specify the "C" ABI: `extern "C"`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(missing_abi)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0152]: found duplicate lang item `panic_impl`
[INFO] [stdout]    --> src/lib.rs:260:1
[INFO] [stdout]     |
[INFO] [stdout] 260 | / fn panic(_info: &PanicInfo) -> ! {
[INFO] [stdout] 261 | |     println("RUST PANIC - entering infinite loop!");
[INFO] [stdout] 262 | |     loop { mc_sleep(); }
[INFO] [stdout] 263 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the lang item is first defined in crate `std` (which `test` depends on)
[INFO] [stdout]     = note: first definition in `std` loaded from /opt/rustwide/rustup-home/toolchains/64b185eddaa1d7ddf5e0c024be23b9cbba6c1722/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-54e42b35ab65fe3c.rlib
[INFO] [stdout]     = note: second definition in the local crate (`mcinterface`)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0152`.
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` declarations without an explicit ABI are deprecated
[INFO] [stdout]   --> src/lib.rs:68:1
[INFO] [stdout]    |
[INFO] [stdout] 68 | extern {
[INFO] [stdout]    | ^^^^^^ help: explicitly specify the "C" ABI: `extern "C"`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(missing_abi)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mcinterface` (lib test) due to 1 previous error; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "234cfecf513d0fd923d0be6bf9838d24b70eaf0258c96db97d98c148a44995f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "234cfecf513d0fd923d0be6bf9838d24b70eaf0258c96db97d98c148a44995f1", kill_on_drop: false }`
[INFO] [stdout] 234cfecf513d0fd923d0be6bf9838d24b70eaf0258c96db97d98c148a44995f1