[INFO] fetching crate rui 0.6.1...
[INFO] building rui-0.6.1 against try#d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6 for pr-146237-1
[INFO] extracting crate rui 0.6.1 into /workspace/builds/worker-1-tc2/source
[INFO] removed /workspace/builds/worker-1-tc2/source/rust-toolchain
[INFO] started tweaking crates.io crate rui 0.6.1
[INFO] finished tweaking crates.io crate rui 0.6.1
[INFO] tweaked toml for crates.io crate rui 0.6.1 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate rui 0.6.1 on toolchain d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate rui 0.6.1 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" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 16e2e9c5380afc0aa403e18f23d4186e8560452384832889cefa02c3c533260f
[INFO] running `Command { std: "docker" "start" "-a" "16e2e9c5380afc0aa403e18f23d4186e8560452384832889cefa02c3c533260f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "16e2e9c5380afc0aa403e18f23d4186e8560452384832889cefa02c3c533260f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "16e2e9c5380afc0aa403e18f23d4186e8560452384832889cefa02c3c533260f", kill_on_drop: false }`
[INFO] [stdout] 16e2e9c5380afc0aa403e18f23d4186e8560452384832889cefa02c3c533260f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 72725a7f1c822a7843137143ea2d80de8a797aef10eec84473b6e66a854d4120
[INFO] running `Command { std: "docker" "start" "-a" "72725a7f1c822a7843137143ea2d80de8a797aef10eec84473b6e66a854d4120", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]    Compiling proc-macro2 v1.0.51
[INFO] [stderr]    Compiling quote v1.0.23
[INFO] [stderr]    Compiling unicode-ident v1.0.6
[INFO] [stderr]    Compiling once_cell v1.17.1
[INFO] [stderr]    Compiling syn v1.0.107
[INFO] [stderr]    Compiling libloading v0.7.4
[INFO] [stderr]    Compiling pkg-config v0.3.26
[INFO] [stderr]    Compiling xml-rs v0.8.4
[INFO] [stderr]    Compiling smallvec v1.10.0
[INFO] [stderr]    Compiling ahash v0.7.6
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.51/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 thiserror v1.0.38
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr]    Compiling dlib v0.5.0
[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" "72725a7f1c822a7843137143ea2d80de8a797aef10eec84473b6e66a854d4120", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "72725a7f1c822a7843137143ea2d80de8a797aef10eec84473b6e66a854d4120", kill_on_drop: false }`
[INFO] [stdout] 72725a7f1c822a7843137143ea2d80de8a797aef10eec84473b6e66a854d4120