[INFO] fetching crate spwm_generator 0.3.0...
[INFO] building spwm_generator-0.3.0 against master#ad85bc524b1ad696e42061ad8338d382dffbdbe5 for pr-146237-1
[INFO] extracting crate spwm_generator 0.3.0 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate spwm_generator 0.3.0
[INFO] finished tweaking crates.io crate spwm_generator 0.3.0
[INFO] tweaked toml for crates.io crate spwm_generator 0.3.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate spwm_generator 0.3.0 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 spwm_generator 0.3.0 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 dlib v0.5.0
[INFO] [stderr]   Downloaded yeslogic-fontconfig-sys v3.2.0
[INFO] [stderr]   Downloaded const-cstr v0.3.0
[INFO] [stderr]   Downloaded plotters-bitmap v0.3.2
[INFO] [stderr]   Downloaded cxxbridge-flags v1.0.83
[INFO] [stderr]   Downloaded float-ord v0.2.0
[INFO] [stderr]   Downloaded core-text v19.2.0
[INFO] [stderr]   Downloaded cmake v0.1.49
[INFO] [stderr]   Downloaded cc v1.0.77
[INFO] [stderr]   Downloaded font-kit v0.11.0
[INFO] [stderr]   Downloaded cxxbridge-macro v1.0.83
[INFO] [stderr]   Downloaded syn v1.0.104
[INFO] [stderr]   Downloaded rayon v1.6.0
[INFO] [stderr]   Downloaded pest v2.5.1
[INFO] [stderr]   Downloaded pathfinder_simd v0.5.1
[INFO] [stderr]   Downloaded freetype v0.7.0
[INFO] [stderr]   Downloaded cxx-build v1.0.83
[INFO] [stderr]   Downloaded cxx v1.0.83
[INFO] [stderr]   Downloaded rustix v0.36.4
[INFO] [stderr]   Downloaded linux-raw-sys v0.1.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 75476aaef65a1512d2d8f3a4a53b2addc6688ee82a50f5f0a6812ac7435753f1
[INFO] running `Command { std: "docker" "start" "-a" "75476aaef65a1512d2d8f3a4a53b2addc6688ee82a50f5f0a6812ac7435753f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "75476aaef65a1512d2d8f3a4a53b2addc6688ee82a50f5f0a6812ac7435753f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "75476aaef65a1512d2d8f3a4a53b2addc6688ee82a50f5f0a6812ac7435753f1", kill_on_drop: false }`
[INFO] [stdout] 75476aaef65a1512d2d8f3a4a53b2addc6688ee82a50f5f0a6812ac7435753f1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 12791f80869ab1abcee52075b7101804444ea4c5cef889181d7415ea0d659b0a
[INFO] running `Command { std: "docker" "start" "-a" "12791f80869ab1abcee52075b7101804444ea4c5cef889181d7415ea0d659b0a", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.47
[INFO] [stderr]    Compiling unicode-ident v1.0.5
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling syn v1.0.104
[INFO] [stderr]    Compiling libc v0.2.137
[INFO] [stderr]    Compiling thiserror v1.0.37
[INFO] [stderr]    Compiling ucd-trie v0.1.5
[INFO] [stderr]    Compiling pkg-config v0.3.26
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling crossbeam-utils v0.8.14
[INFO] [stderr]    Compiling cc v1.0.77
[INFO] [stderr]    Compiling crc32fast v1.3.2
[INFO] [stderr]    Compiling memoffset v0.7.1
[INFO] [stderr]    Compiling miniz_oxide v0.6.2
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.47/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 num-rational v0.4.1
[INFO] [stderr]    Compiling yeslogic-fontconfig-sys v3.2.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.13
[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" "12791f80869ab1abcee52075b7101804444ea4c5cef889181d7415ea0d659b0a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "12791f80869ab1abcee52075b7101804444ea4c5cef889181d7415ea0d659b0a", kill_on_drop: false }`
[INFO] [stdout] 12791f80869ab1abcee52075b7101804444ea4c5cef889181d7415ea0d659b0a