[INFO] fetching crate greenhook 0.0.4...
[INFO] checking greenhook-0.0.4 against try#c659ee110de67e82444e4b6c8407c1a9af9c2cf6 for pr-145608-1
[INFO] extracting crate greenhook 0.0.4 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate greenhook 0.0.4
[INFO] finished tweaking crates.io crate greenhook 0.0.4
[INFO] tweaked toml for crates.io crate greenhook 0.0.4 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate greenhook 0.0.4 on toolchain c659ee110de67e82444e4b6c8407c1a9af9c2cf6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate greenhook 0.0.4 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" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c5f5875f6698cce0ead18d13310126f6945d41178ace08a8bbb999541aa9d8f0
[INFO] running `Command { std: "docker" "start" "-a" "c5f5875f6698cce0ead18d13310126f6945d41178ace08a8bbb999541aa9d8f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c5f5875f6698cce0ead18d13310126f6945d41178ace08a8bbb999541aa9d8f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c5f5875f6698cce0ead18d13310126f6945d41178ace08a8bbb999541aa9d8f0", kill_on_drop: false }`
[INFO] [stdout] c5f5875f6698cce0ead18d13310126f6945d41178ace08a8bbb999541aa9d8f0
[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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cdf9dbb2e68aaa050fa3808c9daf733cc9bfedb7f2a881745abb3c1410a8d3be
[INFO] running `Command { std: "docker" "start" "-a" "cdf9dbb2e68aaa050fa3808c9daf733cc9bfedb7f2a881745abb3c1410a8d3be", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.59
[INFO] [stderr]    Compiling rustix v0.36.14
[INFO] [stderr]    Compiling memoffset v0.7.1
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling libseccomp-sys v0.2.1
[INFO] [stderr]    Compiling libseccomp v0.3.0
[INFO] [stderr]     Checking io-lifetimes v1.0.11
[INFO] [stderr]    Compiling procfs v0.15.1
[INFO] [stderr]     Checking aho-corasick v1.0.1
[INFO] [stderr]     Checking num_cpus v1.15.0
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking regex-syntax v0.7.2
[INFO] [stderr]     Checking nix v0.26.2
[INFO] [stderr]     Checking threadpool v1.8.1
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking resolv-conf v0.7.0
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.59/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]     Checking regex v1.8.3
[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" "cdf9dbb2e68aaa050fa3808c9daf733cc9bfedb7f2a881745abb3c1410a8d3be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cdf9dbb2e68aaa050fa3808c9daf733cc9bfedb7f2a881745abb3c1410a8d3be", kill_on_drop: false }`
[INFO] [stdout] cdf9dbb2e68aaa050fa3808c9daf733cc9bfedb7f2a881745abb3c1410a8d3be