[INFO] cloning repository https://github.com/brendisurfs/egui-learning
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/brendisurfs/egui-learning" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbrendisurfs%2Fegui-learning", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbrendisurfs%2Fegui-learning'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 61b4f7a78992b9b1aa00cb6d900f9945fbabc0dc
[INFO] checking brendisurfs/egui-learning against master#82310651b93a594a3fd69015e1562186a080d94c for pr-145770
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbrendisurfs%2Fegui-learning" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/brendisurfs/egui-learning
[INFO] finished tweaking git repo https://github.com/brendisurfs/egui-learning
[INFO] tweaked toml for git repo https://github.com/brendisurfs/egui-learning written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/brendisurfs/egui-learning on toolchain 82310651b93a594a3fd69015e1562186a080d94c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+82310651b93a594a3fd69015e1562186a080d94c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/brendisurfs/egui-learning 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" "+82310651b93a594a3fd69015e1562186a080d94c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
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[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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+82310651b93a594a3fd69015e1562186a080d94c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] de36e0cbcfaec913bfe7d1a4a2b5fedd63543045edd6f0fdf4331b766ec70bd6
[INFO] running `Command { std: "docker" "start" "-a" "de36e0cbcfaec913bfe7d1a4a2b5fedd63543045edd6f0fdf4331b766ec70bd6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "de36e0cbcfaec913bfe7d1a4a2b5fedd63543045edd6f0fdf4331b766ec70bd6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "de36e0cbcfaec913bfe7d1a4a2b5fedd63543045edd6f0fdf4331b766ec70bd6", kill_on_drop: false }`
[INFO] [stdout] de36e0cbcfaec913bfe7d1a4a2b5fedd63543045edd6f0fdf4331b766ec70bd6
[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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+82310651b93a594a3fd69015e1562186a080d94c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 276ebf9ee9bcb3c4bb3a1bff95a42885208b0611e55f97efe6f5884beac49822
[INFO] running `Command { std: "docker" "start" "-a" "276ebf9ee9bcb3c4bb3a1bff95a42885208b0611e55f97efe6f5884beac49822", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.134
[INFO] [stderr]    Compiling proc-macro2 v1.0.46
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling unicode-ident v1.0.5
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling pkg-config v0.3.25
[INFO] [stderr]    Compiling syn v1.0.102
[INFO] [stderr]    Compiling xml-rs v0.8.4
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]     Checking once_cell v1.15.0
[INFO] [stderr]     Checking smallvec v1.10.0
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling parking_lot_core v0.9.3
[INFO] [stderr]     Checking libloading v0.7.3
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling thiserror v1.0.37
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]     Checking downcast-rs v1.2.0
[INFO] [stderr]     Checking dlib v0.5.0
[INFO] [stderr]     Checking scoped-tls v1.0.0
[INFO] [stderr]    Compiling khronos_api v3.1.0
[INFO] [stderr]    Compiling crc32fast v1.3.2
[INFO] [stderr]     Checking minimal-lexical v0.2.1
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling lock_api v0.4.9
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]    Compiling cmake v0.1.48
[INFO] [stderr]     Checking ttf-parser v0.15.2
[INFO] [stderr]    Compiling slotmap v1.0.6
[INFO] [stderr]    Compiling gl_generator v0.14.0
[INFO] [stderr]     Checking miniz_oxide v0.5.4
[INFO] [stderr]     Checking ab_glyph_rasterizer v0.1.7
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.46/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]     Checking nohash-hasher v0.2.0
[INFO] [stderr]     Checking percent-encoding v2.2.0
[INFO] [stderr]     Checking foreign-types-shared v0.3.1
[INFO] [stderr]     Checking arrayref v0.3.6
[INFO] [stderr]    Compiling libm v0.2.5
[INFO] [stderr]    Compiling ahash v0.8.0
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]     Checking arrayvec v0.5.2
[INFO] [stderr]     Checking tinyvec_macros v0.1.0
[INFO] [stderr]     Checking cty v0.2.2
[INFO] [stderr]     Checking tinyvec v1.6.0
[INFO] [stderr]     Checking nom v7.1.1
[INFO] [stderr]    Compiling unicode-xid v0.2.4
[INFO] [stderr]     Checking raw-window-handle v0.5.0
[INFO] [stderr]     Checking raw-window-handle v0.4.3
[INFO] [stderr]    Compiling ahash v0.7.6
[INFO] [stderr]     Checking tracing-core v0.1.30
[INFO] [stderr]     Checking flate2 v1.0.24
[INFO] [stderr]     Checking instant v0.1.12
[INFO] [stderr]     Checking unicode-bidi v0.3.8
[INFO] [stderr]    Compiling wayland-sys v0.29.5
[INFO] [stderr]    Compiling freetype-sys v0.13.1
[INFO] [stderr]    Compiling expat-sys v2.1.6
[INFO] [stderr]    Compiling servo-fontconfig-sys v5.1.0
[INFO] [stderr]    Compiling smithay-client-toolkit v0.16.0
[INFO] [stderr]    Compiling x11-dl v2.20.0
[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" "276ebf9ee9bcb3c4bb3a1bff95a42885208b0611e55f97efe6f5884beac49822", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "276ebf9ee9bcb3c4bb3a1bff95a42885208b0611e55f97efe6f5884beac49822", kill_on_drop: false }`
[INFO] [stdout] 276ebf9ee9bcb3c4bb3a1bff95a42885208b0611e55f97efe6f5884beac49822