[INFO] fetching crate mochi-rs 0.0.2...
[INFO] testing mochi-rs-0.0.2 against 1.75.0 for beta-1.76-1
[INFO] extracting crate mochi-rs 0.0.2 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate mochi-rs 0.0.2 on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mochi-rs 0.0.2
[INFO] finished tweaking crates.io crate mochi-rs 0.0.2
[INFO] tweaked toml for crates.io crate mochi-rs 0.0.2 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "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" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded dlmalloc v0.2.4
[INFO] [stderr]   Downloaded mochi-bind v0.0.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fe44e20001e81ba9d35c10be0cb2fd64359cdd616c7fe7186a1331839213e08d
[INFO] running `Command { std: "docker" "start" "-a" "fe44e20001e81ba9d35c10be0cb2fd64359cdd616c7fe7186a1331839213e08d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fe44e20001e81ba9d35c10be0cb2fd64359cdd616c7fe7186a1331839213e08d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe44e20001e81ba9d35c10be0cb2fd64359cdd616c7fe7186a1331839213e08d", kill_on_drop: false }`
[INFO] [stdout] fe44e20001e81ba9d35c10be0cb2fd64359cdd616c7fe7186a1331839213e08d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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=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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 058dd30363bb1f025f244e96fd5e8b03068e175ac88b99165c0b405a7c602765
[INFO] running `Command { std: "docker" "start" "-a" "058dd30363bb1f025f244e96fd5e8b03068e175ac88b99165c0b405a7c602765", kill_on_drop: false }`
[INFO] [stderr]    Compiling dlmalloc v0.2.4
[INFO] [stderr]    Compiling mochi-bind v0.0.1
[INFO] [stderr]    Compiling mochi-rs v0.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | / #![feature(
[INFO] [stdout] 3 | |     core_intrinsics,
[INFO] [stdout] 4 | |     alloc_error_handler,
[INFO] [stdout] 5 | |     fmt_internals,
[INFO] [stdout] 6 | |     panic_info_message
[INFO] [stdout] 7 | | )]
[INFO] [stdout]   | |__^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     core_intrinsics,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     fmt_internals,
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     panic_info_message
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mochi-rs` (lib) due to 5 previous errors
[INFO] running `Command { std: "docker" "inspect" "058dd30363bb1f025f244e96fd5e8b03068e175ac88b99165c0b405a7c602765", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "058dd30363bb1f025f244e96fd5e8b03068e175ac88b99165c0b405a7c602765", kill_on_drop: false }`
[INFO] [stdout] 058dd30363bb1f025f244e96fd5e8b03068e175ac88b99165c0b405a7c602765
