[INFO] fetching crate rimrs 0.1.4...
[INFO] testing rimrs-0.1.4 against try#b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b for pr-145330-1
[INFO] extracting crate rimrs 0.1.4 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate rimrs 0.1.4
[INFO] finished tweaking crates.io crate rimrs 0.1.4
[INFO] tweaked toml for crates.io crate rimrs 0.1.4 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate rimrs 0.1.4 on toolchain b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate rimrs 0.1.4 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" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b0120292ba3f514463d6ab78af8d1610cf45add827b7a497c68e729255b1c827
[INFO] running `Command { std: "docker" "start" "-a" "b0120292ba3f514463d6ab78af8d1610cf45add827b7a497c68e729255b1c827", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b0120292ba3f514463d6ab78af8d1610cf45add827b7a497c68e729255b1c827", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b0120292ba3f514463d6ab78af8d1610cf45add827b7a497c68e729255b1c827", kill_on_drop: false }`
[INFO] [stdout] b0120292ba3f514463d6ab78af8d1610cf45add827b7a497c68e729255b1c827
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f7b86ac1d1c8f06198d7e71ba997623a6f729fd013a66637a2c86e2703eb29a8
[INFO] running `Command { std: "docker" "start" "-a" "f7b86ac1d1c8f06198d7e71ba997623a6f729fd013a66637a2c86e2703eb29a8", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-ident v1.0.6
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]    Compiling xml-rs v0.8.4
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling libloading v0.7.4
[INFO] [stderr]    Compiling cmake v0.1.49
[INFO] [stderr]    Compiling wayland-sys v0.29.5
[INFO] [stderr]    Compiling thiserror v1.0.38
[INFO] [stderr]    Compiling slotmap v1.0.6
[INFO] [stderr]    Compiling downcast-rs v1.2.0
[INFO] [stderr]    Compiling crc32fast v1.3.2
[INFO] [stderr]    Compiling nom v7.1.3
[INFO] [stderr]    Compiling servo-fontconfig-sys v5.1.0
[INFO] [stderr]    Compiling miniz_oxide v0.6.2
[INFO] [stderr]    Compiling ahash v0.8.3
[INFO] [stderr]    Compiling x11-dl v2.21.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.51
[INFO] [stderr]    Compiling smithay-client-toolkit v0.16.0
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.51/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 arrayvec v0.7.2
[INFO] [stderr]    Compiling ttf-parser v0.18.1
[INFO] [stderr]    Compiling dlib v0.5.0
[INFO] [stderr]    Compiling freetype-sys v0.13.1
[INFO] [stderr]    Compiling expat-sys v2.1.6
[INFO] [stderr]    Compiling kurbo v0.8.3
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr]    Compiling crossfont v0.5.1
[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" "f7b86ac1d1c8f06198d7e71ba997623a6f729fd013a66637a2c86e2703eb29a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f7b86ac1d1c8f06198d7e71ba997623a6f729fd013a66637a2c86e2703eb29a8", kill_on_drop: false }`
[INFO] [stdout] f7b86ac1d1c8f06198d7e71ba997623a6f729fd013a66637a2c86e2703eb29a8