[INFO] fetching crate registry 1.2.3...
[INFO] checking registry-1.2.3 against master#35936c4839dd272646394779d151e060d0f6b3ac for pr-122960-1
[INFO] extracting crate registry 1.2.3 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate registry 1.2.3 on toolchain 35936c4839dd272646394779d151e060d0f6b3ac
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+35936c4839dd272646394779d151e060d0f6b3ac" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate registry 1.2.3
[INFO] finished tweaking crates.io crate registry 1.2.3
[INFO] tweaked toml for crates.io crate registry 1.2.3 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate crates.io crate registry 1.2.3 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" "+35936c4839dd272646394779d151e060d0f6b3ac" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded thiserror v1.0.40
[INFO] [stderr]   Downloaded thiserror-impl v1.0.40
[INFO] [stderr]   Downloaded proc-macro2 v1.0.53
[INFO] [stderr]   Downloaded utfx v0.1.0
[INFO] [stderr]   Downloaded syn v2.0.8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+35936c4839dd272646394779d151e060d0f6b3ac" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b8d63ba45fed0b949762b432375f9998dd59466f7dd181d5f07b2299fb5d0226
[INFO] running `Command { std: "docker" "start" "-a" "b8d63ba45fed0b949762b432375f9998dd59466f7dd181d5f07b2299fb5d0226", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b8d63ba45fed0b949762b432375f9998dd59466f7dd181d5f07b2299fb5d0226", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b8d63ba45fed0b949762b432375f9998dd59466f7dd181d5f07b2299fb5d0226", kill_on_drop: false }`
[INFO] [stdout] b8d63ba45fed0b949762b432375f9998dd59466f7dd181d5f07b2299fb5d0226
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+35936c4839dd272646394779d151e060d0f6b3ac" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2163142308f7aa26f4046cc5cd52b48b86de386bc0dff4038594d65bdd787e43
[INFO] running `Command { std: "docker" "start" "-a" "2163142308f7aa26f4046cc5cd52b48b86de386bc0dff4038594d65bdd787e43", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.53
[INFO] [stderr]    Compiling winapi v0.3.9
[INFO] [stderr]    Compiling thiserror v1.0.40
[INFO] [stderr]     Checking utfx v0.1.0
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-1.0.53/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] running `Command { std: "docker" "inspect" "2163142308f7aa26f4046cc5cd52b48b86de386bc0dff4038594d65bdd787e43", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2163142308f7aa26f4046cc5cd52b48b86de386bc0dff4038594d65bdd787e43", kill_on_drop: false }`
[INFO] [stdout] 2163142308f7aa26f4046cc5cd52b48b86de386bc0dff4038594d65bdd787e43