[INFO] fetching crate inkwell 0.2.0...
[INFO] checking inkwell-0.2.0 against master#30f74ff0dc4d66debc8b50724c446f817e5f75f4 for pr-121848-1
[INFO] extracting crate inkwell 0.2.0 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate inkwell 0.2.0 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 inkwell 0.2.0
[INFO] finished tweaking crates.io crate inkwell 0.2.0
[INFO] tweaked toml for crates.io crate inkwell 0.2.0 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate crates.io crate inkwell 0.2.0 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" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded alloc-traits v0.1.1
[INFO] [stderr]   Downloaded static-alloc v0.2.1
[INFO] [stderr]   Downloaded inkwell_internals v0.8.0
[INFO] [stderr]   Downloaded llvm-sys v140.0.2
[INFO] [stderr]   Downloaded llvm-sys v120.2.4
[INFO] [stderr]   Downloaded llvm-sys v40.4.0
[INFO] [stderr]   Downloaded llvm-sys v50.4.0
[INFO] [stderr]   Downloaded llvm-sys v80.3.0
[INFO] [stderr]   Downloaded llvm-sys v90.2.1
[INFO] [stderr]   Downloaded llvm-sys v100.2.3
[INFO] [stderr]   Downloaded llvm-sys v160.0.2
[INFO] [stderr]   Downloaded ucd-util v0.1.8
[INFO] [stderr]   Downloaded llvm-sys v60.6.0
[INFO] [stderr]   Downloaded llvm-sys v70.4.0
[INFO] [stderr]   Downloaded llvm-sys v110.0.3
[INFO] [stderr]   Downloaded llvm-sys v130.0.4
[INFO] [stderr]   Downloaded llvm-sys v150.0.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 58ddfc70f36d96189deffe592bc5db4a79e30cd4d2370b40e7e90181c1012433
[INFO] running `Command { std: "docker" "start" "-a" "58ddfc70f36d96189deffe592bc5db4a79e30cd4d2370b40e7e90181c1012433", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "58ddfc70f36d96189deffe592bc5db4a79e30cd4d2370b40e7e90181c1012433", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "58ddfc70f36d96189deffe592bc5db4a79e30cd4d2370b40e7e90181c1012433", kill_on_drop: false }`
[INFO] [stdout] 58ddfc70f36d96189deffe592bc5db4a79e30cd4d2370b40e7e90181c1012433
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 32d1cc186a4aa8aa513f62f8e4fa35580be5bfb706ed36f50040d93812c0ea8b
[INFO] running `Command { std: "docker" "start" "-a" "32d1cc186a4aa8aa513f62f8e4fa35580be5bfb706ed36f50040d93812c0ea8b", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.125
[INFO] [stderr]    Compiling parking_lot_core v0.9.3
[INFO] [stderr]    Compiling inkwell v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking once_cell v1.17.0
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.56
[INFO] [stderr]     Checking aho-corasick v0.7.19
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-1.0.56/src/lib.rs:92:30
[INFO] [stdout]    |
[INFO] [stdout] 92 |     feature(proc_macro_span, proc_macro_span_shrink)
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `proc-macro2` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "32d1cc186a4aa8aa513f62f8e4fa35580be5bfb706ed36f50040d93812c0ea8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "32d1cc186a4aa8aa513f62f8e4fa35580be5bfb706ed36f50040d93812c0ea8b", kill_on_drop: false }`
[INFO] [stdout] 32d1cc186a4aa8aa513f62f8e4fa35580be5bfb706ed36f50040d93812c0ea8b
