[INFO] fetching crate rhai-doc 0.2.4...
[INFO] checking rhai-doc-0.2.4 against try#012cd62c9add58ab3910e44c137d87db3ab70f61 for pr-155915
[INFO] extracting crate rhai-doc 0.2.4 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate rhai-doc 0.2.4
[INFO] finished tweaking crates.io crate rhai-doc 0.2.4
[INFO] tweaked toml for crates.io crate rhai-doc 0.2.4 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate rhai-doc 0.2.4 on toolchain 012cd62c9add58ab3910e44c137d87db3ab70f61
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate rhai-doc 0.2.4 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" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 59564ba0283daa0d84510f6753703aa26a51ccffef2f038869328583e98d6dc2
[INFO] running `Command { std: "docker" "start" "-a" "59564ba0283daa0d84510f6753703aa26a51ccffef2f038869328583e98d6dc2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "59564ba0283daa0d84510f6753703aa26a51ccffef2f038869328583e98d6dc2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "59564ba0283daa0d84510f6753703aa26a51ccffef2f038869328583e98d6dc2", kill_on_drop: false }`
[INFO] [stdout] 59564ba0283daa0d84510f6753703aa26a51ccffef2f038869328583e98d6dc2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 80529fc7f876b27d9bbe82566927e616e957568e66965619a015e78b4aeaebaf
[INFO] running `Command { std: "docker" "start" "-a" "80529fc7f876b27d9bbe82566927e616e957568e66965619a015e78b4aeaebaf", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-ident v1.0.5
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling syn v1.0.103
[INFO] [stderr]    Compiling libc v0.2.137
[INFO] [stderr]    Compiling thiserror v1.0.37
[INFO] [stderr]    Compiling serde_derive v1.0.147
[INFO] [stderr]    Compiling serde v1.0.147
[INFO] [stderr]    Compiling once_cell v1.16.0
[INFO] [stderr]    Compiling crunchy v0.2.2
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]    Compiling ucd-trie v0.1.5
[INFO] [stderr]    Compiling serde_json v1.0.89
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling smartstring v1.0.1
[INFO] [stderr]    Compiling ahash v0.8.2
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]     Checking ryu v1.0.11
[INFO] [stderr]    Compiling proc-macro2 v1.0.47
[INFO] [stderr]     Checking itoa v1.0.4
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.47/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 os_str_bytes v6.4.1
[INFO] [stderr]    Compiling pulldown-cmark v0.9.2
[INFO] [stderr]    Compiling tiny-keccak v2.0.2
[INFO] [stderr]     Checking unicode-width v0.1.10
[INFO] [stderr]     Checking glob v0.3.0
[INFO] [stderr]     Checking getopts v0.2.21
[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" "80529fc7f876b27d9bbe82566927e616e957568e66965619a015e78b4aeaebaf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "80529fc7f876b27d9bbe82566927e616e957568e66965619a015e78b4aeaebaf", kill_on_drop: false }`
[INFO] [stdout] 80529fc7f876b27d9bbe82566927e616e957568e66965619a015e78b4aeaebaf
