[INFO] cloning repository https://github.com/babalolajnr/heap-simulation
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/babalolajnr/heap-simulation" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbabalolajnr%2Fheap-simulation", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbabalolajnr%2Fheap-simulation'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] eee971de8221dd9dddda2400088b348fa2d8f8e7
[INFO] checking babalolajnr/heap-simulation against try#ac4c3613be2acd5395b65d85e5657b81e3c982f0 for pr-154585
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbabalolajnr%2Fheap-simulation" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/babalolajnr/heap-simulation
[INFO] finished tweaking git repo https://github.com/babalolajnr/heap-simulation
[INFO] tweaked toml for git repo https://github.com/babalolajnr/heap-simulation written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/babalolajnr/heap-simulation on toolchain ac4c3613be2acd5395b65d85e5657b81e3c982f0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ac4c3613be2acd5395b65d85e5657b81e3c982f0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/babalolajnr/heap-simulation 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" "+ac4c3613be2acd5395b65d85e5657b81e3c982f0" "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 serde_derive v1.0.145
[INFO] [stderr]   Downloaded shader_version v0.7.0
[INFO] [stderr]   Downloaded piston_window v0.117.0
[INFO] [stderr]   Downloaded read_color v1.0.0
[INFO] [stderr]   Downloaded xdg v2.4.1
[INFO] [stderr]   Downloaded wayland-egl v0.28.6
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[INFO] [stderr]   Downloaded pistoncore-input v1.0.1
[INFO] [stderr]   Downloaded pistoncore-event_loop v0.52.0
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[INFO] [stderr]   Downloaded glutin v0.26.0
[INFO] [stderr]   Downloaded proc-macro2 v1.0.44
[INFO] [stderr]   Downloaded syn v1.0.101
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[INFO] [stderr]   Downloaded gfx v0.18.2
[INFO] [stderr]   Downloaded piston2d-gfx_graphics v0.72.0
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[INFO] [stderr]   Downloaded darling_macro v0.10.2
[INFO] [stderr]   Downloaded owned_ttf_parser v0.6.0
[INFO] [stderr]   Downloaded libc v0.2.133
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[INFO] [stderr]   Downloaded wayland-sys v0.28.6
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[INFO] [stderr]   Downloaded interpolation v0.2.0
[INFO] [stderr]   Downloaded gl v0.13.0
[INFO] [stderr]   Downloaded num_enum_derive v0.4.3
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[INFO] [stderr]   Downloaded andrew v0.3.1
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[INFO] [stderr]   Downloaded piston-graphics_api_version v1.0.1
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[INFO] [stderr]   Downloaded pistoncore-window v0.47.1
[INFO] [stderr]   Downloaded tiff v0.6.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+ac4c3613be2acd5395b65d85e5657b81e3c982f0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 833c4fa0e1680785743da3a17f476f53b74aa4bfc1cab710c911a0ce93ec3ae9
[INFO] running `Command { std: "docker" "start" "-a" "833c4fa0e1680785743da3a17f476f53b74aa4bfc1cab710c911a0ce93ec3ae9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "833c4fa0e1680785743da3a17f476f53b74aa4bfc1cab710c911a0ce93ec3ae9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "833c4fa0e1680785743da3a17f476f53b74aa4bfc1cab710c911a0ce93ec3ae9", kill_on_drop: false }`
[INFO] [stdout] 833c4fa0e1680785743da3a17f476f53b74aa4bfc1cab710c911a0ce93ec3ae9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+ac4c3613be2acd5395b65d85e5657b81e3c982f0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f93ca3cd5636062a1d708e9c4ee847492a25c339a8b77952b04c05d437bb239a
[INFO] running `Command { std: "docker" "start" "-a" "f93ca3cd5636062a1d708e9c4ee847492a25c339a8b77952b04c05d437bb239a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.133
[INFO] [stderr]    Compiling proc-macro2 v1.0.44
[INFO] [stderr]     Checking once_cell v1.15.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.11
[INFO] [stderr]    Compiling wayland-sys v0.28.6
[INFO] [stderr]     Checking smallvec v1.9.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.10
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking ttf-parser v0.6.2
[INFO] [stderr]     Checking dlib v0.5.0
[INFO] [stderr]     Checking piston-float v1.0.1
[INFO] [stderr]    Compiling syn v1.0.101
[INFO] [stderr]     Checking scoped-tls v1.0.0
[INFO] [stderr]    Compiling rayon v1.5.3
[INFO] [stderr]    Compiling nix v0.18.0
[INFO] [stderr]    Compiling serde v1.0.145
[INFO] [stderr]    Compiling serde_derive v1.0.145
[INFO] [stderr]    Compiling x11-dl v2.20.0
[INFO] [stderr]     Checking piston-viewport v1.0.2
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]     Checking either v1.8.0
[INFO] [stderr]     Checking piston-graphics_api_version v1.0.1
[INFO] [stderr]     Checking xcursor v0.3.4
[INFO] [stderr]     Checking libloading v0.6.7
[INFO] [stderr]     Checking draw_state v0.8.0
[INFO] [stderr]     Checking instant v0.1.12
[INFO] [stderr]     Checking xml-rs v0.8.4
[INFO] [stderr]     Checking deflate v0.8.6
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]    Compiling glutin_egl_sys v0.1.6
[INFO] [stderr]    Compiling glutin_glx_sys v0.1.8
[INFO] [stderr]     Checking dlib v0.4.2
[INFO] [stderr]    Compiling gl_generator v0.13.1
[INFO] [stderr]     Checking lazycell v1.3.0
[INFO] [stderr]     Checking gif v0.11.4
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.44/src/lib.rs:92:30
[INFO] [stdout]    |
[INFO] [stdout] 92 |     feature(proc_macro_span, proc_macro_span_shrink)
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: there is a feature with a similar name: `proc_macro_span_file`
[INFO] [stdout]    |
[INFO] [stdout] 92 -     feature(proc_macro_span, proc_macro_span_shrink)
[INFO] [stdout] 92 +     feature(proc_macro_span, proc_macro_span_file)
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking gfx_core v0.9.2
[INFO] [stderr]     Checking num-iter v0.1.43
[INFO] [stderr]     Checking crossbeam-channel v0.5.6
[INFO] [stderr]     Checking png v0.16.8
[INFO] [stderr]    Compiling gfx_gl v0.6.1
[INFO] [stderr]     Checking crossbeam-deque v0.8.2
[INFO] [stderr]     Checking piston-texture v0.8.0
[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" "f93ca3cd5636062a1d708e9c4ee847492a25c339a8b77952b04c05d437bb239a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f93ca3cd5636062a1d708e9c4ee847492a25c339a8b77952b04c05d437bb239a", kill_on_drop: false }`
[INFO] [stdout] f93ca3cd5636062a1d708e9c4ee847492a25c339a8b77952b04c05d437bb239a