[INFO] cloning repository https://github.com/vikram-kangotra/Sudoku-Detector
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/vikram-kangotra/Sudoku-Detector" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvikram-kangotra%2FSudoku-Detector", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvikram-kangotra%2FSudoku-Detector'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8610fe51768dab86113a4c11eb56580a0c598c32
[INFO] checking vikram-kangotra/Sudoku-Detector against master#9ba3d315b4b2bea7485071eaf4b2681320cd2a27 for pr-124592
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvikram-kangotra%2FSudoku-Detector" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/vikram-kangotra/Sudoku-Detector on toolchain 9ba3d315b4b2bea7485071eaf4b2681320cd2a27
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9ba3d315b4b2bea7485071eaf4b2681320cd2a27" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/vikram-kangotra/Sudoku-Detector
[INFO] finished tweaking git repo https://github.com/vikram-kangotra/Sudoku-Detector
[INFO] tweaked toml for git repo https://github.com/vikram-kangotra/Sudoku-Detector written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/vikram-kangotra/Sudoku-Detector 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" "+9ba3d315b4b2bea7485071eaf4b2681320cd2a27" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tract-pulse v0.18.5
[INFO] [stderr]   Downloaded tract-pulse-opl v0.18.5
[INFO] [stderr]   Downloaded tract-nnef v0.18.5
[INFO] [stderr]   Downloaded proc-quote v0.4.0
[INFO] [stderr]   Downloaded tract-data v0.18.5
[INFO] [stderr]   Downloaded tract-hir v0.18.5
[INFO] [stderr]   Downloaded liquid-lib v0.26.0
[INFO] [stderr]   Downloaded opencv-binding-generator v0.57.0
[INFO] [stderr]   Downloaded tract-linalg v0.18.5
[INFO] [stderr]   Downloaded liquid v0.26.0
[INFO] [stderr]   Downloaded liquid-derive v0.26.0
[INFO] [stderr]   Downloaded liquid-core v0.26.0
[INFO] [stderr]   Downloaded tract-core v0.18.5
[INFO] [stderr]   Downloaded opencv v0.78.0
[INFO] [stderr]   Downloaded tract-tensorflow v0.18.5
[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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+9ba3d315b4b2bea7485071eaf4b2681320cd2a27" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4bf070c72b18ef93a079c133861f115f816ed101cb80ef277ff49853f61ebb96
[INFO] running `Command { std: "docker" "start" "-a" "4bf070c72b18ef93a079c133861f115f816ed101cb80ef277ff49853f61ebb96", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4bf070c72b18ef93a079c133861f115f816ed101cb80ef277ff49853f61ebb96", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4bf070c72b18ef93a079c133861f115f816ed101cb80ef277ff49853f61ebb96", kill_on_drop: false }`
[INFO] [stdout] 4bf070c72b18ef93a079c133861f115f816ed101cb80ef277ff49853f61ebb96
[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@sha256:99613afd962a8cfa530ec1899472a458bd015a1ab0af876cf7eb06f6006d81ea" "/opt/rustwide/cargo-home/bin/cargo" "+9ba3d315b4b2bea7485071eaf4b2681320cd2a27" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3c1a5e5d108e6aad2f0b93570e709d872256b19d820adb9aa2b43cab2cddeae1
[INFO] running `Command { std: "docker" "start" "-a" "3c1a5e5d108e6aad2f0b93570e709d872256b19d820adb9aa2b43cab2cddeae1", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.49
[INFO] [stderr]    Compiling unicode-ident v1.0.6
[INFO] [stderr]    Compiling quote v1.0.23
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling syn v1.0.107
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]    Compiling once_cell v1.16.0
[INFO] [stderr]    Compiling thiserror v1.0.38
[INFO] [stderr]    Compiling proc-macro-hack v0.5.20+deprecated
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling regex-syntax v0.6.28
[INFO] [stderr]    Compiling libm v0.2.6
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-1.0.49/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 ucd-trie v0.1.5
[INFO] [stderr]    Compiling serde_derive v1.0.152
[INFO] [stderr]    Compiling either v1.8.0
[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] 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" "3c1a5e5d108e6aad2f0b93570e709d872256b19d820adb9aa2b43cab2cddeae1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3c1a5e5d108e6aad2f0b93570e709d872256b19d820adb9aa2b43cab2cddeae1", kill_on_drop: false }`
[INFO] [stdout] 3c1a5e5d108e6aad2f0b93570e709d872256b19d820adb9aa2b43cab2cddeae1