[INFO] fetching crate knuffel 3.2.0...
[INFO] testing knuffel-3.2.0 against master#350d0ef0ec0493e6d21cfb265cb8211a0e74d766 for pr-145330-1
[INFO] extracting crate knuffel 3.2.0 into /workspace/builds/worker-0-tc1/source
[INFO] started tweaking crates.io crate knuffel 3.2.0
[INFO] finished tweaking crates.io crate knuffel 3.2.0
[INFO] tweaked toml for crates.io crate knuffel 3.2.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate knuffel 3.2.0 on toolchain 350d0ef0ec0493e6d21cfb265cb8211a0e74d766
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate knuffel 3.2.0 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" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded minicbor-derive v0.13.0
[INFO] [stderr]   Downloaded miette-derive v5.6.0
[INFO] [stderr]   Downloaded supports-hyperlinks v2.0.0
[INFO] [stderr]   Downloaded knuffel-derive v3.2.0
[INFO] [stderr]   Downloaded is-terminal v0.4.4
[INFO] [stderr]   Downloaded serde v1.0.156
[INFO] [stderr]   Downloaded regex v1.7.1
[INFO] [stderr]   Downloaded textwrap v0.15.2
[INFO] [stderr]   Downloaded minicbor v0.19.1
[INFO] [stderr]   Downloaded is_ci v1.1.1
[INFO] [stderr]   Downloaded thiserror v1.0.39
[INFO] [stderr]   Downloaded supports-color v2.0.0
[INFO] [stderr]   Downloaded thiserror-impl v1.0.39
[INFO] [stderr]   Downloaded supports-unicode v2.0.0
[INFO] [stderr]   Downloaded smawk v0.3.1
[INFO] [stderr]   Downloaded base64 v0.21.0
[INFO] [stderr]   Downloaded unicode-linebreak v0.1.4
[INFO] [stderr]   Downloaded chumsky v0.9.2
[INFO] [stderr]   Downloaded serde_json v1.0.94
[INFO] [stderr]   Downloaded rustix v0.36.9
[INFO] [stderr]   Downloaded io-lifetimes v1.0.6
[INFO] [stderr]   Downloaded miette v5.6.0
[INFO] [stderr]   Downloaded proc-macro2 v1.0.52
[INFO] [stderr]   Downloaded object v0.30.3
[INFO] [stderr]   Downloaded gimli v0.27.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 40ec8e44a049fe1213ba75a57047fbd60fbbf3a7d78a5a0d8802dae8cdfebc9b
[INFO] running `Command { std: "docker" "start" "-a" "40ec8e44a049fe1213ba75a57047fbd60fbbf3a7d78a5a0d8802dae8cdfebc9b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "40ec8e44a049fe1213ba75a57047fbd60fbbf3a7d78a5a0d8802dae8cdfebc9b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "40ec8e44a049fe1213ba75a57047fbd60fbbf3a7d78a5a0d8802dae8cdfebc9b", kill_on_drop: false }`
[INFO] [stdout] 40ec8e44a049fe1213ba75a57047fbd60fbbf3a7d78a5a0d8802dae8cdfebc9b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b2a34b1f0b3eedc2f6aac5c16b13ae0d6dde92ace49f5d712c9369413c04017b
[INFO] running `Command { std: "docker" "start" "-a" "b2a34b1f0b3eedc2f6aac5c16b13ae0d6dde92ace49f5d712c9369413c04017b", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.52
[INFO] [stderr]    Compiling quote v1.0.26
[INFO] [stderr]    Compiling unicode-ident v1.0.8
[INFO] [stderr]    Compiling libc v0.2.140
[INFO] [stderr]    Compiling ahash v0.7.6
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling once_cell v1.17.1
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling thiserror v1.0.39
[INFO] [stderr]    Compiling unicode-segmentation v1.10.1
[INFO] [stderr]    Compiling unicode-width v0.1.10
[INFO] [stderr]    Compiling base64 v0.21.0
[INFO] [stderr]    Compiling heck v0.4.1
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.52/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] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `proc-macro2` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "b2a34b1f0b3eedc2f6aac5c16b13ae0d6dde92ace49f5d712c9369413c04017b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b2a34b1f0b3eedc2f6aac5c16b13ae0d6dde92ace49f5d712c9369413c04017b", kill_on_drop: false }`
[INFO] [stdout] b2a34b1f0b3eedc2f6aac5c16b13ae0d6dde92ace49f5d712c9369413c04017b