[INFO] fetching crate writingbuddy 0.16.0...
[INFO] testing writingbuddy-0.16.0 against master#caccb4d0368bd918ef6668af8e13834d07040417 for pr-146098-1
[INFO] extracting crate writingbuddy 0.16.0 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate writingbuddy 0.16.0
[INFO] finished tweaking crates.io crate writingbuddy 0.16.0
[INFO] tweaked toml for crates.io crate writingbuddy 0.16.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate writingbuddy 0.16.0 on toolchain caccb4d0368bd918ef6668af8e13834d07040417
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate writingbuddy 0.16.0 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" "+caccb4d0368bd918ef6668af8e13834d07040417" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded dirs-sys v0.4.0
[INFO] [stderr]   Downloaded dirs v5.0.0
[INFO] [stderr]   Downloaded signal-hook v0.3.15
[INFO] [stderr]   Downloaded smawk v0.3.1
[INFO] [stderr]   Downloaded tui v0.19.0
[INFO] [stderr]   Downloaded benchmark-counters v0.2.0
[INFO] [stderr]   Downloaded ucd-trie v0.1.5
[INFO] [stderr]   Downloaded pest v2.5.7
[INFO] [stderr]   Downloaded cpufeatures v0.2.6
[INFO] [stderr]   Downloaded pest_meta v2.5.7
[INFO] [stderr]   Downloaded unicode-linebreak v0.1.4
[INFO] [stderr]   Downloaded crossterm_winapi v0.9.0
[INFO] [stderr]   Downloaded pest_generator v2.5.7
[INFO] [stderr]   Downloaded config v0.13.3
[INFO] [stderr]   Downloaded crossterm v0.26.1
[INFO] [stderr]   Downloaded sha2 v0.10.6
[INFO] [stderr]   Downloaded pest_derive v2.5.7
[INFO] [stderr]   Downloaded ron v0.7.1
[INFO] [stderr]   Downloaded pathdiff v0.2.1
[INFO] [stderr]   Downloaded regex v1.7.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+caccb4d0368bd918ef6668af8e13834d07040417" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 61f59b48de076413d04fe2cf66e95c5e188c2dbfb9c151691603bf14708f6b7d
[INFO] running `Command { std: "docker" "start" "-a" "61f59b48de076413d04fe2cf66e95c5e188c2dbfb9c151691603bf14708f6b7d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "61f59b48de076413d04fe2cf66e95c5e188c2dbfb9c151691603bf14708f6b7d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "61f59b48de076413d04fe2cf66e95c5e188c2dbfb9c151691603bf14708f6b7d", kill_on_drop: false }`
[INFO] [stdout] 61f59b48de076413d04fe2cf66e95c5e188c2dbfb9c151691603bf14708f6b7d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+caccb4d0368bd918ef6668af8e13834d07040417" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1d8a0c70e107abb28d86ccd465b9b735ca08a8791c8c3244d15947054ed09dc3
[INFO] running `Command { std: "docker" "start" "-a" "1d8a0c70e107abb28d86ccd465b9b735ca08a8791c8c3244d15947054ed09dc3", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.141
[INFO] [stderr]    Compiling serde v1.0.160
[INFO] [stderr]    Compiling signal-hook v0.3.15
[INFO] [stderr]    Compiling ahash v0.7.6
[INFO] [stderr]    Compiling ucd-trie v0.1.5
[INFO] [stderr]    Compiling parking_lot_core v0.9.7
[INFO] [stderr]    Compiling proc-macro2 v1.0.56
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling once_cell v1.17.1
[INFO] [stderr]    Compiling unicode-width v0.1.10
[INFO] [stderr]    Compiling aho-corasick v0.7.20
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling dlv-list v0.3.0
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.56/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] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling ansi_term v0.12.1
[INFO] [stderr]    Compiling base64 v0.13.1
[INFO] [stderr]    Compiling minimal-lexical v0.2.1
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling smawk v0.3.1
[INFO] [stderr]    Compiling pathdiff v0.2.1
[INFO] [stderr]    Compiling benchmark-counters v0.2.0
[INFO] [stderr]    Compiling regex v1.7.3
[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" "1d8a0c70e107abb28d86ccd465b9b735ca08a8791c8c3244d15947054ed09dc3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1d8a0c70e107abb28d86ccd465b9b735ca08a8791c8c3244d15947054ed09dc3", kill_on_drop: false }`
[INFO] [stdout] 1d8a0c70e107abb28d86ccd465b9b735ca08a8791c8c3244d15947054ed09dc3