[INFO] fetching crate pymeta 0.1.0-alpha.1...
[INFO] checking pymeta-0.1.0-alpha.1 against 1.95.0 for pr-155915
[INFO] extracting crate pymeta 0.1.0-alpha.1 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate pymeta 0.1.0-alpha.1
[INFO] finished tweaking crates.io crate pymeta 0.1.0-alpha.1
[INFO] tweaked toml for crates.io crate pymeta 0.1.0-alpha.1 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate pymeta 0.1.0-alpha.1 on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate pymeta 0.1.0-alpha.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rustc-literal-escaper v0.0.7
[INFO] [stderr]   Downloaded pyo3-build-config v0.28.1
[INFO] [stderr]   Downloaded pyo3-macros v0.28.1
[INFO] [stderr]   Downloaded pyo3-macros-backend v0.28.1
[INFO] [stderr]   Downloaded pyo3-ffi v0.28.1
[INFO] [stderr]   Downloaded pyo3 v0.28.1
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f75fa2f7883a3417b405abeb8c39b0c43e0537b2cb852fe5da336d211788715e
[INFO] running `Command { std: "docker" "start" "-a" "f75fa2f7883a3417b405abeb8c39b0c43e0537b2cb852fe5da336d211788715e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f75fa2f7883a3417b405abeb8c39b0c43e0537b2cb852fe5da336d211788715e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f75fa2f7883a3417b405abeb8c39b0c43e0537b2cb852fe5da336d211788715e", kill_on_drop: false }`
[INFO] [stdout] f75fa2f7883a3417b405abeb8c39b0c43e0537b2cb852fe5da336d211788715e
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8bc62ae38fd9c91e5dd9381d5fe35d7c8361e7d7ce2002db38e1aa0b0652a1f8
[INFO] running `Command { std: "docker" "start" "-a" "8bc62ae38fd9c91e5dd9381d5fe35d7c8361e7d7ce2002db38e1aa0b0652a1f8", kill_on_drop: false }`
[INFO] [stderr]    Compiling target-lexicon v0.13.4
[INFO] [stderr]    Compiling proc-macro2 v1.0.106
[INFO] [stderr]    Compiling quote v1.0.44
[INFO] [stderr]    Compiling unicode-ident v1.0.24
[INFO] [stderr]    Compiling libc v0.2.180
[INFO] [stderr]    Compiling heck v0.5.0
[INFO] [stderr]     Checking once_cell v1.21.3
[INFO] [stderr]     Checking either v1.15.0
[INFO] [stderr]     Checking rustc-literal-escaper v0.0.7
[INFO] [stderr]    Compiling pyo3-build-config v0.28.1
[INFO] [stderr]    Compiling syn v2.0.115
[INFO] [stderr]    Compiling proc-macro-error-attr2 v2.0.0
[INFO] [stderr]     Checking proc-macro-error2 v2.0.1
[INFO] [stderr]    Compiling pyo3-macros-backend v0.28.1
[INFO] [stderr]    Compiling pyo3-ffi v0.28.1
[INFO] [stderr]    Compiling pyo3 v0.28.1
[INFO] [stderr]    Compiling pyo3-macros v0.28.1
[INFO] [stderr]     Checking pymeta v0.1.0-alpha.1 (/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(proc_macro_diagnostic)]
[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:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(proc_macro_diagnostic)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `pymeta` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `pymeta` (lib test) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "8bc62ae38fd9c91e5dd9381d5fe35d7c8361e7d7ce2002db38e1aa0b0652a1f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8bc62ae38fd9c91e5dd9381d5fe35d7c8361e7d7ce2002db38e1aa0b0652a1f8", kill_on_drop: false }`
[INFO] [stdout] 8bc62ae38fd9c91e5dd9381d5fe35d7c8361e7d7ce2002db38e1aa0b0652a1f8
