[INFO] fetching crate buf 0.2.3...
[INFO] checking buf-0.2.3 against master#30f74ff0dc4d66debc8b50724c446f817e5f75f4 for pr-121848-1
[INFO] extracting crate buf 0.2.3 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate buf 0.2.3 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 buf 0.2.3
[INFO] finished tweaking crates.io crate buf 0.2.3
[INFO] tweaked toml for crates.io crate buf 0.2.3 written to /workspace/builds/worker-2-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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded fallible v0.1.3
[INFO] [stderr]   Downloaded hash-table v0.2.5
[INFO] [stderr]   Downloaded loca v0.7.4
[INFO] [stderr]   Downloaded ptr v0.2.3
[INFO] [stderr]   Downloaded containers v0.9.13
[INFO] [stderr]   Downloaded i-o v0.4.7
[INFO] [stderr]   Downloaded abort v0.1.3
[INFO] [stderr]   Downloaded heap v0.1.0
[INFO] [stderr]   Downloaded rel v0.2.0
[INFO] [stderr]   Downloaded default_allocator v0.3.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] ecbac141cf22baffd2667df67a1a8518d0317b76a2f2b5669e4a7815f996c979
[INFO] running `Command { std: "docker" "start" "-a" "ecbac141cf22baffd2667df67a1a8518d0317b76a2f2b5669e4a7815f996c979", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ecbac141cf22baffd2667df67a1a8518d0317b76a2f2b5669e4a7815f996c979", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ecbac141cf22baffd2667df67a1a8518d0317b76a2f2b5669e4a7815f996c979", kill_on_drop: false }`
[INFO] [stdout] ecbac141cf22baffd2667df67a1a8518d0317b76a2f2b5669e4a7815f996c979
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 305bf633911276a0a2d3d4749b3f78eed5a5846be85cc846a26732e551e4ce03
[INFO] running `Command { std: "docker" "start" "-a" "305bf633911276a0a2d3d4749b3f78eed5a5846be85cc846a26732e551e4ce03", kill_on_drop: false }`
[INFO] [stderr]    Compiling ptr v0.2.3
[INFO] [stderr]    Compiling hash-table v0.2.5
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]    Compiling containers v0.9.13
[INFO] [stderr]     Checking siphasher v0.2.3
[INFO] [stderr]     Checking rel v0.2.0
[INFO] [stderr]     Checking heap v0.1.0
[INFO] [stderr]     Checking abort v0.1.3
[INFO] [stderr]    Compiling i-o v0.4.7
[INFO] [stderr]     Checking fallible v0.1.3
[INFO] [stderr]     Checking unreachable v1.0.0
[INFO] [stderr]     Checking loca v0.7.4
[INFO] [stderr]     Checking default_allocator v0.3.0
[INFO] [stdout] error: attributes starting with `rustc` are reserved for use by the `rustc` compiler
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/default_allocator-0.3.0/src/lib.rs:22:46
[INFO] [stdout]    |
[INFO] [stdout] 22 |     #[cfg_attr(not(feature = "stable-rust"), rustc_allocator_nounwind)]
[INFO] [stdout]    |                                              ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: attributes starting with `rustc` are reserved for use by the `rustc` compiler
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/default_allocator-0.3.0/src/lib.rs:24:46
[INFO] [stdout]    |
[INFO] [stdout] 24 |     #[cfg_attr(not(feature = "stable-rust"), rustc_allocator_nounwind)]
[INFO] [stdout]    |                                              ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: attributes starting with `rustc` are reserved for use by the `rustc` compiler
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/default_allocator-0.3.0/src/lib.rs:26:46
[INFO] [stdout]    |
[INFO] [stdout] 26 |     #[cfg_attr(not(feature = "stable-rust"), rustc_allocator_nounwind)]
[INFO] [stdout]    |                                              ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: attributes starting with `rustc` are reserved for use by the `rustc` compiler
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/default_allocator-0.3.0/src/lib.rs:31:46
[INFO] [stdout]    |
[INFO] [stdout] 31 |     #[cfg_attr(not(feature = "stable-rust"), rustc_allocator_nounwind)]
[INFO] [stdout]    |                                              ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: attributes starting with `rustc` are reserved for use by the `rustc` compiler
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/default_allocator-0.3.0/src/lib.rs:33:46
[INFO] [stdout]    |
[INFO] [stdout] 33 |     #[cfg_attr(not(feature = "stable-rust"), rustc_allocator_nounwind)]
[INFO] [stdout]    |                                              ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: attributes starting with `rustc` are reserved for use by the `rustc` compiler
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/default_allocator-0.3.0/src/lib.rs:38:46
[INFO] [stdout]    |
[INFO] [stdout] 38 |     #[cfg_attr(not(feature = "stable-rust"), rustc_allocator_nounwind)]
[INFO] [stdout]    |                                              ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `rustc_allocator_nounwind` in this scope
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/default_allocator-0.3.0/src/lib.rs:22:46
[INFO] [stdout]    |
[INFO] [stdout] 22 |     #[cfg_attr(not(feature = "stable-rust"), rustc_allocator_nounwind)]
[INFO] [stdout]    |                                              ^^^^^^^^^^^^^^^^^^^^^^^^ help: a built-in attribute with a similar name exists: `rustc_allocator_zeroed`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `rustc_allocator_nounwind` in this scope
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/default_allocator-0.3.0/src/lib.rs:24:46
[INFO] [stdout]    |
[INFO] [stdout] 24 |     #[cfg_attr(not(feature = "stable-rust"), rustc_allocator_nounwind)]
[INFO] [stdout]    |                                              ^^^^^^^^^^^^^^^^^^^^^^^^ help: a built-in attribute with a similar name exists: `rustc_allocator_zeroed`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `rustc_allocator_nounwind` in this scope
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/default_allocator-0.3.0/src/lib.rs:26:46
[INFO] [stdout]    |
[INFO] [stdout] 26 |     #[cfg_attr(not(feature = "stable-rust"), rustc_allocator_nounwind)]
[INFO] [stdout]    |                                              ^^^^^^^^^^^^^^^^^^^^^^^^ help: a built-in attribute with a similar name exists: `rustc_allocator_zeroed`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `rustc_allocator_nounwind` in this scope
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/default_allocator-0.3.0/src/lib.rs:31:46
[INFO] [stdout]    |
[INFO] [stdout] 31 |     #[cfg_attr(not(feature = "stable-rust"), rustc_allocator_nounwind)]
[INFO] [stdout]    |                                              ^^^^^^^^^^^^^^^^^^^^^^^^ help: a built-in attribute with a similar name exists: `rustc_allocator_zeroed`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `rustc_allocator_nounwind` in this scope
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/default_allocator-0.3.0/src/lib.rs:33:46
[INFO] [stdout]    |
[INFO] [stdout] 33 |     #[cfg_attr(not(feature = "stable-rust"), rustc_allocator_nounwind)]
[INFO] [stdout]    |                                              ^^^^^^^^^^^^^^^^^^^^^^^^ help: a built-in attribute with a similar name exists: `rustc_allocator_zeroed`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `rustc_allocator_nounwind` in this scope
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/default_allocator-0.3.0/src/lib.rs:38:46
[INFO] [stdout]    |
[INFO] [stdout] 38 |     #[cfg_attr(not(feature = "stable-rust"), rustc_allocator_nounwind)]
[INFO] [stdout]    |                                              ^^^^^^^^^^^^^^^^^^^^^^^^ help: a built-in attribute with a similar name exists: `rustc_allocator_zeroed`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 12 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `default_allocator` (lib) due to 13 previous errors
[INFO] running `Command { std: "docker" "inspect" "305bf633911276a0a2d3d4749b3f78eed5a5846be85cc846a26732e551e4ce03", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "305bf633911276a0a2d3d4749b3f78eed5a5846be85cc846a26732e551e4ce03", kill_on_drop: false }`
[INFO] [stdout] 305bf633911276a0a2d3d4749b3f78eed5a5846be85cc846a26732e551e4ce03
