[INFO] cloning repository https://github.com/decapo/squares
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/decapo/squares" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdecapo%2Fsquares", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdecapo%2Fsquares'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 75c845e463a1c41bc2b74e526ae8adfe44a367de
[INFO] checking decapo/squares/75c845e463a1c41bc2b74e526ae8adfe44a367de against master#fd2c811d25ad5773fbd2463e058bf4edf4d44eb2 for pr-130443
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdecapo%2Fsquares" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/decapo/squares on toolchain fd2c811d25ad5773fbd2463e058bf4edf4d44eb2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+fd2c811d25ad5773fbd2463e058bf4edf4d44eb2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/decapo/squares
[INFO] finished tweaking git repo https://github.com/decapo/squares
[INFO] tweaked toml for git repo https://github.com/decapo/squares written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/decapo/squares 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" "+fd2c811d25ad5773fbd2463e058bf4edf4d44eb2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded xml-rs v0.8.9
[INFO] [stderr]   Downloaded wasm-bindgen-futures v0.4.35
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+fd2c811d25ad5773fbd2463e058bf4edf4d44eb2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 930e460ecbc8c60a1c6d1e51367952f4b18d67f309a830ac4429dd03d6efb7a1
[INFO] running `Command { std: "docker" "start" "-a" "930e460ecbc8c60a1c6d1e51367952f4b18d67f309a830ac4429dd03d6efb7a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "930e460ecbc8c60a1c6d1e51367952f4b18d67f309a830ac4429dd03d6efb7a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "930e460ecbc8c60a1c6d1e51367952f4b18d67f309a830ac4429dd03d6efb7a1", kill_on_drop: false }`
[INFO] [stdout] 930e460ecbc8c60a1c6d1e51367952f4b18d67f309a830ac4429dd03d6efb7a1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+fd2c811d25ad5773fbd2463e058bf4edf4d44eb2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6fbe114ec0933cab48304f55f712d98938fcfb18ae04ecc405ab577d5a2500b2
[INFO] running `Command { std: "docker" "start" "-a" "6fbe114ec0933cab48304f55f712d98938fcfb18ae04ecc405ab577d5a2500b2", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.144
[INFO] [stderr]    Compiling proc-macro2 v1.0.56
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking once_cell v1.17.1
[INFO] [stderr]    Compiling crossbeam-utils v0.8.15
[INFO] [stderr]    Compiling memoffset v0.8.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.14
[INFO] [stderr]    Compiling pkg-config v0.3.27
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking libloading v0.7.4
[INFO] [stderr]     Checking num-traits v0.2.15
[INFO] [stderr]    Compiling ahash v0.7.6
[INFO] [stderr]    Compiling xml-rs v0.8.9
[INFO] [stderr]    Compiling serde_derive v1.0.162
[INFO] [stderr]     Checking ppv-lite86 v0.2.17
[INFO] [stderr]    Compiling rayon-core v1.11.0
[INFO] [stderr]    Compiling serde v1.0.162
[INFO] [stderr]     Checking dlib v0.5.0
[INFO] [stderr]    Compiling parking_lot_core v0.8.6
[INFO] [stderr]     Checking instant v0.1.12
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]     Checking cty v0.2.2
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling futures-core v0.3.28
[INFO] [stderr]    Compiling thiserror v1.0.40
[INFO] [stderr]     Checking raw-window-handle v0.4.3
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling futures-channel v0.3.28
[INFO] [stderr]    Compiling crc32fast v1.3.2
[INFO] [stderr]     Checking either v1.8.1
[INFO] [stderr]     Checking unicode-width v0.1.10
[INFO] [stderr]     Checking adler32 v1.2.0
[INFO] [stderr]    Compiling khronos-egl v4.1.0
[INFO] [stderr]     Checking bit-vec v0.6.3
[INFO] [stderr]     Checking termcolor v1.2.0
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking fxhash v0.2.1
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-1.0.56/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 wayland-sys v0.28.6
[INFO] [stderr]     Checking gpu-alloc-types v0.2.0
[INFO] [stderr]     Checking bit-set v0.5.3
[INFO] [stderr]     Checking gpu-descriptor-types v0.1.1
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]     Checking crossbeam-channel v0.5.8
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]     Checking euclid v0.22.9
[INFO] [stderr]     Checking spirv v0.2.0+1.5.4
[INFO] [stderr]     Checking codespan-reporting v0.11.1
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]     Checking hexf-parse v0.2.1
[INFO] [stderr]    Compiling crossbeam-queue v0.3.8
[INFO] [stderr]     Checking downcast-rs v1.2.0
[INFO] [stderr]     Checking minimal-lexical v0.2.1
[INFO] [stderr]    Compiling nix v0.18.0
[INFO] [stderr]     Checking scoped-tls v1.0.1
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr]     Checking crossbeam-deque v0.8.3
[INFO] [stderr] error: could not compile `proc-macro2` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "6fbe114ec0933cab48304f55f712d98938fcfb18ae04ecc405ab577d5a2500b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6fbe114ec0933cab48304f55f712d98938fcfb18ae04ecc405ab577d5a2500b2", kill_on_drop: false }`
[INFO] [stdout] 6fbe114ec0933cab48304f55f712d98938fcfb18ae04ecc405ab577d5a2500b2