[INFO] fetching crate rusty-snake 0.1.2...
[INFO] building rusty-snake-0.1.2 against master#ad85bc524b1ad696e42061ad8338d382dffbdbe5 for pr-146237-1
[INFO] extracting crate rusty-snake 0.1.2 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate rusty-snake 0.1.2
[INFO] finished tweaking crates.io crate rusty-snake 0.1.2
[INFO] tweaked toml for crates.io crate rusty-snake 0.1.2 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate rusty-snake 0.1.2 on toolchain ad85bc524b1ad696e42061ad8338d382dffbdbe5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate rusty-snake 0.1.2 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" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded bytemuck v1.12.1
[INFO] [stderr]   Downloaded send_wrapper v0.2.0
[INFO] [stderr]   Downloaded libloading v0.7.3
[INFO] [stderr]   Downloaded wasm-timer v0.1.3
[INFO] [stderr]   Downloaded thiserror v1.0.36
[INFO] [stderr]   Downloaded xdg v2.4.1
[INFO] [stderr]   Downloaded wide v0.6.5
[INFO] [stderr]   Downloaded bracket-geometry v0.8.3
[INFO] [stderr]   Downloaded glow v0.10.0
[INFO] [stderr]   Downloaded x11-dl v2.20.0
[INFO] [stderr]   Downloaded proc-macro2 v1.0.44
[INFO] [stderr]   Downloaded bracket-color v0.8.2
[INFO] [stderr]   Downloaded object-pool v0.5.4
[INFO] [stderr]   Downloaded ultraviolet v0.8.1
[INFO] [stderr]   Downloaded ab_glyph_rasterizer v0.1.7
[INFO] [stderr]   Downloaded thiserror-impl v1.0.36
[INFO] [stderr]   Downloaded miniz_oxide v0.5.4
[INFO] [stderr]   Downloaded bracket-terminal v0.8.5
[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" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d28dbc9d323c39becf5d90fb4138c345390ff05c40721362907047e955a08f3b
[INFO] running `Command { std: "docker" "start" "-a" "d28dbc9d323c39becf5d90fb4138c345390ff05c40721362907047e955a08f3b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d28dbc9d323c39becf5d90fb4138c345390ff05c40721362907047e955a08f3b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d28dbc9d323c39becf5d90fb4138c345390ff05c40721362907047e955a08f3b", kill_on_drop: false }`
[INFO] [stdout] d28dbc9d323c39becf5d90fb4138c345390ff05c40721362907047e955a08f3b
[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" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 28356e97cd94bc314be9cb1e7cf2fce79cf05ee2a123d1f80dcb8ff899986d73
[INFO] running `Command { std: "docker" "start" "-a" "28356e97cd94bc314be9cb1e7cf2fce79cf05ee2a123d1f80dcb8ff899986d73", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.133
[INFO] [stderr]    Compiling xml-rs v0.8.4
[INFO] [stderr]    Compiling proc-macro2 v1.0.44
[INFO] [stderr]    Compiling libloading v0.7.3
[INFO] [stderr]    Compiling khronos_api v3.1.0
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling wayland-sys v0.28.6
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]    Compiling downcast-rs v1.2.0
[INFO] [stderr]    Compiling scoped-tls v1.0.0
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling instant v0.1.12
[INFO] [stderr]    Compiling nix v0.18.0
[INFO] [stderr]    Compiling ttf-parser v0.6.2
[INFO] [stderr]    Compiling x11-dl v2.20.0
[INFO] [stderr]    Compiling ab_glyph_rasterizer v0.1.7
[INFO] [stderr]    Compiling bytemuck v1.12.1
[INFO] [stderr]    Compiling walkdir v2.3.2
[INFO] [stderr]    Compiling libloading v0.6.7
[INFO] [stderr]    Compiling dlib v0.5.0
[INFO] [stderr]    Compiling cty v0.2.2
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]    Compiling raw-window-handle v0.4.3
[INFO] [stderr]    Compiling lazycell v1.3.0
[INFO] [stderr]    Compiling safe_arch v0.5.2
[INFO] [stderr]    Compiling deflate v0.8.6
[INFO] [stderr]    Compiling dlib v0.4.2
[INFO] [stderr]    Compiling miniz_oxide v0.3.7
[INFO] [stderr]    Compiling anyhow v1.0.65
[INFO] [stderr]    Compiling miniz_oxide v0.5.4
[INFO] [stderr]    Compiling gl_generator v0.14.0
[INFO] [stderr]    Compiling jpeg-decoder v0.1.22
[INFO] [stderr]    Compiling glow v0.10.0
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.44/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 wide v0.6.5
[INFO] [stderr]    Compiling nom v7.1.1
[INFO] [stderr]    Compiling png v0.16.8
[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" "28356e97cd94bc314be9cb1e7cf2fce79cf05ee2a123d1f80dcb8ff899986d73", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "28356e97cd94bc314be9cb1e7cf2fce79cf05ee2a123d1f80dcb8ff899986d73", kill_on_drop: false }`
[INFO] [stdout] 28356e97cd94bc314be9cb1e7cf2fce79cf05ee2a123d1f80dcb8ff899986d73