[INFO] cloning repository https://github.com/GUILN/ai_algorithms
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/GUILN/ai_algorithms" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGUILN%2Fai_algorithms", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGUILN%2Fai_algorithms'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 96424b4bada1f0ce31c8493145a51e1ade4a653d
[INFO] checking GUILN/ai_algorithms against try#a3dffdb3a32d0dedc198f9de7d43173f3eb6727b for pr-136303
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGUILN%2Fai_algorithms" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/GUILN/ai_algorithms on toolchain a3dffdb3a32d0dedc198f9de7d43173f3eb6727b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a3dffdb3a32d0dedc198f9de7d43173f3eb6727b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/GUILN/ai_algorithms
[INFO] finished tweaking git repo https://github.com/GUILN/ai_algorithms
[INFO] tweaked toml for git repo https://github.com/GUILN/ai_algorithms written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/GUILN/ai_algorithms 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" "+a3dffdb3a32d0dedc198f9de7d43173f3eb6727b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:c80049f3b88b82089a44e0f06d0d6029d44b96b7257e55a1cd63dbc9f4c33334" "/opt/rustwide/cargo-home/bin/cargo" "+a3dffdb3a32d0dedc198f9de7d43173f3eb6727b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dd3c0b82bf30e2cc079991a2fcb6a5638d90b2f43596afaf370d4c7e35625f16
[INFO] running `Command { std: "docker" "start" "-a" "dd3c0b82bf30e2cc079991a2fcb6a5638d90b2f43596afaf370d4c7e35625f16", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dd3c0b82bf30e2cc079991a2fcb6a5638d90b2f43596afaf370d4c7e35625f16", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dd3c0b82bf30e2cc079991a2fcb6a5638d90b2f43596afaf370d4c7e35625f16", kill_on_drop: false }`
[INFO] [stdout] dd3c0b82bf30e2cc079991a2fcb6a5638d90b2f43596afaf370d4c7e35625f16
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:c80049f3b88b82089a44e0f06d0d6029d44b96b7257e55a1cd63dbc9f4c33334" "/opt/rustwide/cargo-home/bin/cargo" "+a3dffdb3a32d0dedc198f9de7d43173f3eb6727b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 22721291f21d3fc094c7e9c9835d65aa9419b02831f80a18bdee8f68e09df24d
[INFO] running `Command { std: "docker" "start" "-a" "22721291f21d3fc094c7e9c9835d65aa9419b02831f80a18bdee8f68e09df24d", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.52
[INFO] [stderr]    Compiling quote v1.0.26
[INFO] [stderr]    Compiling unicode-ident v1.0.8
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling serde_derive v1.0.156
[INFO] [stderr]    Compiling serde v1.0.156
[INFO] [stderr]    Compiling serde_json v1.0.94
[INFO] [stderr]    Compiling thiserror v1.0.39
[INFO] [stderr]     Checking ryu v1.0.13
[INFO] [stderr]     Checking itoa v1.0.6
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.52/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] [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] running `Command { std: "docker" "inspect" "22721291f21d3fc094c7e9c9835d65aa9419b02831f80a18bdee8f68e09df24d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "22721291f21d3fc094c7e9c9835d65aa9419b02831f80a18bdee8f68e09df24d", kill_on_drop: false }`
[INFO] [stdout] 22721291f21d3fc094c7e9c9835d65aa9419b02831f80a18bdee8f68e09df24d
