[INFO] cloning repository https://github.com/wsmind/mulch
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/wsmind/mulch" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwsmind%2Fmulch", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwsmind%2Fmulch'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 62c14ec321f2f55cbf45fbb3386b6b56bc218c56
[INFO] checking wsmind/mulch against master#cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c for pr-143170
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwsmind%2Fmulch" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/wsmind/mulch
[INFO] finished tweaking git repo https://github.com/wsmind/mulch
[INFO] tweaked toml for git repo https://github.com/wsmind/mulch written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/wsmind/mulch on toolchain cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/wsmind/mulch 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" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded redox_syscall v0.3.4
[INFO] [stderr]   Downloaded sctk-adwaita v0.5.3
[INFO] [stderr]   Downloaded ecolor v0.21.0
[INFO] [stderr]   Downloaded ab_glyph v0.2.20
[INFO] [stderr]   Downloaded enumn v0.1.6
[INFO] [stderr]   Downloaded shaderc v0.8.2
[INFO] [stderr]   Downloaded atomic_refcell v0.1.9
[INFO] [stderr]   Downloaded emath v0.21.0
[INFO] [stderr]   Downloaded accesskit v0.9.0
[INFO] [stderr]   Downloaded egui_demo_lib v0.21.0
[INFO] [stderr]   Downloaded futures v0.3.26
[INFO] [stderr]   Downloaded png v0.17.7
[INFO] [stderr]   Downloaded tiny-skia v0.8.3
[INFO] [stderr]   Downloaded glow v0.12.0
[INFO] [stderr]   Downloaded owned_ttf_parser v0.18.1
[INFO] [stderr]   Downloaded wgpu-types v0.15.1
[INFO] [stderr]   Downloaded wgpu v0.15.1
[INFO] [stderr]   Downloaded wgpu-core v0.15.1
[INFO] [stderr]   Downloaded roxmltree v0.14.1
[INFO] [stderr]   Downloaded egui v0.21.0
[INFO] [stderr]   Downloaded wgpu-hal v0.15.2
[INFO] [stderr]   Downloaded android-activity v0.4.0
[INFO] [stderr]   Downloaded glam v0.23.0
[INFO] [stderr]   Downloaded egui_extras v0.21.0
[INFO] [stderr]   Downloaded enum-map v2.4.2
[INFO] [stderr]   Downloaded tiny-skia-path v0.8.3
[INFO] [stderr]   Downloaded hassle-rs v0.9.0
[INFO] [stderr]   Downloaded winit v0.28.1
[INFO] [stderr]   Downloaded ash v0.37.2+1.3.238
[INFO] [stderr]   Downloaded unicode_names2 v0.6.0
[INFO] [stderr]   Downloaded naga v0.11.0
[INFO] [stderr]   Downloaded epaint v0.21.0
[INFO] [stderr]   Downloaded orbclient v0.3.42
[INFO] [stderr]   Downloaded shaderc-sys v0.8.2
[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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d28eea8dd36bb8712d66bf8e09c11fe894f272a408ddb541801e8d66d7737bfc
[INFO] running `Command { std: "docker" "start" "-a" "d28eea8dd36bb8712d66bf8e09c11fe894f272a408ddb541801e8d66d7737bfc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d28eea8dd36bb8712d66bf8e09c11fe894f272a408ddb541801e8d66d7737bfc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d28eea8dd36bb8712d66bf8e09c11fe894f272a408ddb541801e8d66d7737bfc", kill_on_drop: false }`
[INFO] [stdout] d28eea8dd36bb8712d66bf8e09c11fe894f272a408ddb541801e8d66d7737bfc
[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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c96af78a9d20590e160d60b4d4a5fe2b1d3cf61417664f5599b9458bc4640ef1
[INFO] running `Command { std: "docker" "start" "-a" "c96af78a9d20590e160d60b4d4a5fe2b1d3cf61417664f5599b9458bc4640ef1", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.51
[INFO] [stderr]    Compiling quote v1.0.23
[INFO] [stderr]    Compiling unicode-ident v1.0.6
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]    Compiling syn v1.0.107
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]     Checking once_cell v1.17.0
[INFO] [stderr]     Checking smallvec v1.10.0
[INFO] [stderr]    Compiling pkg-config v0.3.26
[INFO] [stderr]     Checking libloading v0.7.4
[INFO] [stderr]    Compiling xml-rs v0.8.4
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling serde_derive v1.0.152
[INFO] [stderr]    Compiling memoffset v0.6.5
[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 memchr v2.5.0
[INFO] [stderr]    Compiling lock_api v0.4.9
[INFO] [stderr]    Compiling ahash v0.7.6
[INFO] [stderr]    Compiling serde v1.0.152
[INFO] [stderr]    Compiling parking_lot_core v0.9.7
[INFO] [stderr]    Compiling thiserror v1.0.38
[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" "c96af78a9d20590e160d60b4d4a5fe2b1d3cf61417664f5599b9458bc4640ef1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c96af78a9d20590e160d60b4d4a5fe2b1d3cf61417664f5599b9458bc4640ef1", kill_on_drop: false }`
[INFO] [stdout] c96af78a9d20590e160d60b4d4a5fe2b1d3cf61417664f5599b9458bc4640ef1