[INFO] cloning repository https://github.com/Lowband21/conways_game_of_life
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Lowband21/conways_game_of_life" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLowband21%2Fconways_game_of_life", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLowband21%2Fconways_game_of_life'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 311670261ffbdec7717e5a5b17fd47ceaf8930eb
[INFO] checking Lowband21/conways_game_of_life against try#5ef65a4ed75279dc1b7a26cedc27293a9f4ca8db for pr-143717
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLowband21%2Fconways_game_of_life" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Lowband21/conways_game_of_life
[INFO] finished tweaking git repo https://github.com/Lowband21/conways_game_of_life
[INFO] tweaked toml for git repo https://github.com/Lowband21/conways_game_of_life written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Lowband21/conways_game_of_life on toolchain 5ef65a4ed75279dc1b7a26cedc27293a9f4ca8db
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5ef65a4ed75279dc1b7a26cedc27293a9f4ca8db" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Lowband21/conways_game_of_life 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" "+5ef65a4ed75279dc1b7a26cedc27293a9f4ca8db" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded unic-langid v0.9.1
[INFO] [stderr]   Downloaded piet-common v0.6.2
[INFO] [stderr]   Downloaded intl_pluralrules v7.0.2
[INFO] [stderr]   Downloaded piet-web v0.6.2
[INFO] [stderr]   Downloaded unic-langid-impl v0.9.1
[INFO] [stderr]   Downloaded gtk3-macros v0.16.3
[INFO] [stderr]   Downloaded pangocairo-sys v0.16.3
[INFO] [stderr]   Downloaded pangocairo v0.16.3
[INFO] [stderr]   Downloaded tinystr v0.7.1
[INFO] [stderr]   Downloaded druid-derive v0.5.1
[INFO] [stderr]   Downloaded gdk-pixbuf v0.16.7
[INFO] [stderr]   Downloaded atk v0.16.0
[INFO] [stderr]   Downloaded cairo-rs v0.16.7
[INFO] [stderr]   Downloaded cfg-expr v0.15.1
[INFO] [stderr]   Downloaded gdk v0.16.2
[INFO] [stderr]   Downloaded kurbo v0.9.4
[INFO] [stderr]   Downloaded pango v0.16.5
[INFO] [stderr]   Downloaded glib-macros v0.16.8
[INFO] [stderr]   Downloaded gio v0.16.7
[INFO] [stderr]   Downloaded piet-coregraphics v0.6.2
[INFO] [stderr]   Downloaded piet-direct2d v0.6.2
[INFO] [stderr]   Downloaded glib v0.16.7
[INFO] [stderr]   Downloaded system-deps v6.1.0
[INFO] [stderr]   Downloaded druid-shell v0.8.3
[INFO] [stderr]   Downloaded druid v0.8.3
[INFO] [stderr]   Downloaded piet-cairo v0.6.2
[INFO] [stderr]   Downloaded piet v0.6.2
[INFO] [stderr]   Downloaded gtk v0.16.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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" "+5ef65a4ed75279dc1b7a26cedc27293a9f4ca8db" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 73ece264bc3bb7399bc8d960d6b5c7a0132e2bf81eff99b85342ab917d8b89b2
[INFO] running `Command { std: "docker" "start" "-a" "73ece264bc3bb7399bc8d960d6b5c7a0132e2bf81eff99b85342ab917d8b89b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "73ece264bc3bb7399bc8d960d6b5c7a0132e2bf81eff99b85342ab917d8b89b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "73ece264bc3bb7399bc8d960d6b5c7a0132e2bf81eff99b85342ab917d8b89b2", kill_on_drop: false }`
[INFO] [stdout] 73ece264bc3bb7399bc8d960d6b5c7a0132e2bf81eff99b85342ab917d8b89b2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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" "+5ef65a4ed75279dc1b7a26cedc27293a9f4ca8db" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 74fbd2ac5bd3d5f963de3f4f16528871124a4396d63abd206b27b1cadcf7ad2f
[INFO] running `Command { std: "docker" "start" "-a" "74fbd2ac5bd3d5f963de3f4f16528871124a4396d63abd206b27b1cadcf7ad2f", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling serde v1.0.163
[INFO] [stderr]    Compiling hashbrown v0.12.3
[INFO] [stderr]    Compiling winnow v0.4.6
[INFO] [stderr]    Compiling target-lexicon v0.12.7
[INFO] [stderr]    Compiling heck v0.4.1
[INFO] [stderr]    Compiling pkg-config v0.3.27
[INFO] [stderr]    Compiling smallvec v1.10.0
[INFO] [stderr]    Compiling version-compare v0.1.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.56
[INFO] [stderr]    Compiling unicode-ident v1.0.8
[INFO] [stderr]    Compiling quote v1.0.27
[INFO] [stderr]    Compiling libc v0.2.144
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling anyhow v1.0.71
[INFO] [stderr]    Compiling futures-core v0.3.28
[INFO] [stderr]    Compiling futures-task v0.3.28
[INFO] [stderr]    Compiling thiserror v1.0.40
[INFO] [stderr]     Checking once_cell v1.17.1
[INFO] [stderr]    Compiling futures-util v0.3.28
[INFO] [stderr]     Checking pin-project-lite v0.2.9
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.56/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 slab v0.4.8
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]    Compiling futures-channel v0.3.28
[INFO] [stderr]     Checking bitflags v1.3.2
[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" "74fbd2ac5bd3d5f963de3f4f16528871124a4396d63abd206b27b1cadcf7ad2f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "74fbd2ac5bd3d5f963de3f4f16528871124a4396d63abd206b27b1cadcf7ad2f", kill_on_drop: false }`
[INFO] [stdout] 74fbd2ac5bd3d5f963de3f4f16528871124a4396d63abd206b27b1cadcf7ad2f