[INFO] fetching crate ripgrep-structured 0.1.1...
[INFO] building ripgrep-structured-0.1.1 against try#4987e9d4227139400384ab59296ffee3b0fb1183 for pr-146237-2
[INFO] extracting crate ripgrep-structured 0.1.1 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate ripgrep-structured 0.1.1
[INFO] finished tweaking crates.io crate ripgrep-structured 0.1.1
[INFO] tweaked toml for crates.io crate ripgrep-structured 0.1.1 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate ripgrep-structured 0.1.1 on toolchain 4987e9d4227139400384ab59296ffee3b0fb1183
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate ripgrep-structured 0.1.1 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" "+4987e9d4227139400384ab59296ffee3b0fb1183" "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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 68dde5cce7d2001d724f7b48a45c447af8af1042f704a9b7feb46f57f674f762
[INFO] running `Command { std: "docker" "start" "-a" "68dde5cce7d2001d724f7b48a45c447af8af1042f704a9b7feb46f57f674f762", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "68dde5cce7d2001d724f7b48a45c447af8af1042f704a9b7feb46f57f674f762", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "68dde5cce7d2001d724f7b48a45c447af8af1042f704a9b7feb46f57f674f762", kill_on_drop: false }`
[INFO] [stdout] 68dde5cce7d2001d724f7b48a45c447af8af1042f704a9b7feb46f57f674f762
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 38796ca4c0a9bc21d68955088057b3de5dadbbac5a232932fb16505e9429ed8e
[INFO] running `Command { std: "docker" "start" "-a" "38796ca4c0a9bc21d68955088057b3de5dadbbac5a232932fb16505e9429ed8e", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.51
[INFO] [stderr]    Compiling quote v1.0.23
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling serde_derive v1.0.154
[INFO] [stderr]    Compiling serde v1.0.154
[INFO] [stderr]    Compiling io-lifetimes v1.0.6
[INFO] [stderr]    Compiling encoding_rs v0.8.32
[INFO] [stderr]    Compiling rustix v0.36.9
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling termcolor v1.2.0
[INFO] [stderr]    Compiling bstr v1.3.0
[INFO] [stderr]    Compiling grep-matcher v0.1.6
[INFO] [stderr]    Compiling ryu v1.0.13
[INFO] [stderr]    Compiling serde_json v1.0.94
[INFO] [stderr]    Compiling memmap2 v0.5.10
[INFO] [stderr]    Compiling bytecount v0.6.3
[INFO] [stderr]    Compiling linux-raw-sys v0.1.4
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling thread_local v1.1.7
[INFO] [stderr]    Compiling base64 v0.20.0
[INFO] [stderr]    Compiling os_str_bytes v6.4.1
[INFO] [stderr]    Compiling anyhow v1.0.69
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.51/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 filetime v0.2.20
[INFO] [stderr]    Compiling csv-core v0.1.10
[INFO] [stderr]    Compiling clap_lex v0.3.2
[INFO] [stderr]    Compiling tar v0.4.38
[INFO] [stderr]    Compiling globset v0.4.10
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr]    Compiling grep-regex v0.1.11
[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" "38796ca4c0a9bc21d68955088057b3de5dadbbac5a232932fb16505e9429ed8e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "38796ca4c0a9bc21d68955088057b3de5dadbbac5a232932fb16505e9429ed8e", kill_on_drop: false }`
[INFO] [stdout] 38796ca4c0a9bc21d68955088057b3de5dadbbac5a232932fb16505e9429ed8e