[INFO] fetching crate emu6502 0.1.1...
[INFO] testing emu6502-0.1.1 against master#350d0ef0ec0493e6d21cfb265cb8211a0e74d766 for pr-145330-1
[INFO] extracting crate emu6502 0.1.1 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate emu6502 0.1.1
[INFO] finished tweaking crates.io crate emu6502 0.1.1
[INFO] tweaked toml for crates.io crate emu6502 0.1.1 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate emu6502 0.1.1 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 emu6502 0.1.1 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" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded target-lexicon v0.12.4
[INFO] [stderr]   Downloaded arrayvec v0.7.2
[INFO] [stderr]   Downloaded unindent v0.1.10
[INFO] [stderr]   Downloaded bitmatch v0.1.1
[INFO] [stderr]   Downloaded pyo3-build-config v0.17.2
[INFO] [stderr]   Downloaded boolean_expression v0.3.11
[INFO] [stderr]   Downloaded pyo3-ffi v0.17.2
[INFO] [stderr]   Downloaded parking_lot_core v0.9.4
[INFO] [stderr]   Downloaded once_cell v1.15.0
[INFO] [stderr]   Downloaded pyo3-macros-backend v0.17.2
[INFO] [stderr]   Downloaded either v1.8.0
[INFO] [stderr]   Downloaded pyo3-macros v0.17.2
[INFO] [stderr]   Downloaded ppv-lite86 v0.2.16
[INFO] [stderr]   Downloaded pyo3 v0.17.2
[INFO] [stderr]   Downloaded libc v0.2.135
[INFO] [stderr]   Downloaded indoc v1.0.7
[INFO] [stderr]   Downloaded itertools v0.9.0
[INFO] [stderr]   Downloaded vm6502 v0.1.0
[INFO] [stderr]   Downloaded anima6502 v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] c6592d35f4be3f6f57d4dc528b2256f679375c5f6d6e7315adbf6af72022c196
[INFO] running `Command { std: "docker" "start" "-a" "c6592d35f4be3f6f57d4dc528b2256f679375c5f6d6e7315adbf6af72022c196", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c6592d35f4be3f6f57d4dc528b2256f679375c5f6d6e7315adbf6af72022c196", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c6592d35f4be3f6f57d4dc528b2256f679375c5f6d6e7315adbf6af72022c196", kill_on_drop: false }`
[INFO] [stdout] c6592d35f4be3f6f57d4dc528b2256f679375c5f6d6e7315adbf6af72022c196
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] bbb20ce046a7183c096583e340f989c6ec94634239acc75b604e2c950ca01e42
[INFO] running `Command { std: "docker" "start" "-a" "bbb20ce046a7183c096583e340f989c6ec94634239acc75b604e2c950ca01e42", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.135
[INFO] [stderr]    Compiling target-lexicon v0.12.4
[INFO] [stderr]    Compiling proc-macro2 v1.0.47
[INFO] [stderr]    Compiling syn v1.0.103
[INFO] [stderr]    Compiling once_cell v1.15.0
[INFO] [stderr]    Compiling smallvec v1.10.0
[INFO] [stderr]    Compiling lock_api v0.4.9
[INFO] [stderr]    Compiling parking_lot_core v0.9.4
[INFO] [stderr]    Compiling either v1.8.0
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling ppv-lite86 v0.2.16
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling arrayvec v0.7.2
[INFO] [stderr]    Compiling unindent v0.1.10
[INFO] [stderr]    Compiling indoc v1.0.7
[INFO] [stderr]    Compiling itertools v0.9.0
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.47/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" "bbb20ce046a7183c096583e340f989c6ec94634239acc75b604e2c950ca01e42", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bbb20ce046a7183c096583e340f989c6ec94634239acc75b604e2c950ca01e42", kill_on_drop: false }`
[INFO] [stdout] bbb20ce046a7183c096583e340f989c6ec94634239acc75b604e2c950ca01e42