[INFO] fetching crate mco-gen 0.1.0...
[INFO] checking mco-gen-0.1.0 against master#30f74ff0dc4d66debc8b50724c446f817e5f75f4 for pr-121848-1
[INFO] extracting crate mco-gen 0.1.0 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate mco-gen 0.1.0 on toolchain 30f74ff0dc4d66debc8b50724c446f817e5f75f4
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mco-gen 0.1.0
[INFO] finished tweaking crates.io crate mco-gen 0.1.0
[INFO] tweaked toml for crates.io crate mco-gen 0.1.0 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 51120bd187a4b5b1fcdd13f60e7ca4e51116286b14fe3806221af095e8b1ab4e
[INFO] running `Command { std: "docker" "start" "-a" "51120bd187a4b5b1fcdd13f60e7ca4e51116286b14fe3806221af095e8b1ab4e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "51120bd187a4b5b1fcdd13f60e7ca4e51116286b14fe3806221af095e8b1ab4e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "51120bd187a4b5b1fcdd13f60e7ca4e51116286b14fe3806221af095e8b1ab4e", kill_on_drop: false }`
[INFO] [stdout] 51120bd187a4b5b1fcdd13f60e7ca4e51116286b14fe3806221af095e8b1ab4e
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fe81f459f5ced0ab2469d3e034599c9aa5baeb3b2ae0d45f4dec8838596cfb8b
[INFO] running `Command { std: "docker" "start" "-a" "fe81f459f5ced0ab2469d3e034599c9aa5baeb3b2ae0d45f4dec8838596cfb8b", kill_on_drop: false }`
[INFO] [stderr]    Compiling mco-gen v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: mco-gen@0.1.0: Compiler version doesn't include clang or GCC: "cc" "--version"
[INFO] [stdout] warning: the feature `core_intrinsics` is internal to the compiler or standard library
[INFO] [stdout]  --> src/lib.rs:6:30
[INFO] [stdout]   |
[INFO] [stdout] 6 | #![cfg_attr(nightly, feature(core_intrinsics))]
[INFO] [stdout]   |                              ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: using it is strongly discouraged
[INFO] [stdout]   = note: `#[warn(internal_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `prefetch`
[INFO] [stdout]   --> src/detail/mod.rs:36:44
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub use self::asm::{initialize_call_frame, prefetch, swap_registers, Registers};
[INFO] [stdout]    |                                            ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the feature `core_intrinsics` is internal to the compiler or standard library
[INFO] [stdout]  --> src/lib.rs:6:30
[INFO] [stdout]   |
[INFO] [stdout] 6 | #![cfg_attr(nightly, feature(core_intrinsics))]
[INFO] [stdout]   |                              ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: using it is strongly discouraged
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]  --> src/lib.rs:8:24
[INFO] [stdout]   |
[INFO] [stdout] 8 | #![cfg_attr(test, deny(warnings))]
[INFO] [stdout]   |                        ^^^^^^^^
[INFO] [stdout]   = note: `#[deny(internal_features)]` implied by `#[deny(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unused import: `prefetch`
[INFO] [stdout]   --> src/detail/mod.rs:36:44
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub use self::asm::{initialize_call_frame, prefetch, swap_registers, Registers};
[INFO] [stdout]    |                                            ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[deny(unused_imports)]` implied by `#[deny(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] The following warnings were emitted during compilation:
[INFO] [stderr] 
[INFO] [stderr] warning: mco-gen@0.1.0: Compiler version doesn't include clang or GCC: "cc" "--version"
[INFO] [stderr] 
[INFO] [stderr] error: could not compile `mco-gen` (lib test) due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "fe81f459f5ced0ab2469d3e034599c9aa5baeb3b2ae0d45f4dec8838596cfb8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe81f459f5ced0ab2469d3e034599c9aa5baeb3b2ae0d45f4dec8838596cfb8b", kill_on_drop: false }`
[INFO] [stdout] fe81f459f5ced0ab2469d3e034599c9aa5baeb3b2ae0d45f4dec8838596cfb8b
