[INFO] fetching crate windows-volume-control 0.1.1...
[INFO] checking windows-volume-control-0.1.1 against master#d9563937fa3b030c5845811113505070109414d2 for pr-151830
[INFO] extracting crate windows-volume-control 0.1.1 into /workspace/builds/worker-5-tc1/source
[INFO] started tweaking crates.io crate windows-volume-control 0.1.1
[INFO] finished tweaking crates.io crate windows-volume-control 0.1.1
[INFO] tweaked toml for crates.io crate windows-volume-control 0.1.1 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate windows-volume-control 0.1.1 on toolchain d9563937fa3b030c5845811113505070109414d2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d9563937fa3b030c5845811113505070109414d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate windows-volume-control 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" "+d9563937fa3b030c5845811113505070109414d2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded windows-interface v0.44.0
[INFO] [stderr]   Downloaded windows-implement v0.44.0
[INFO] [stderr]   Downloaded windows v0.44.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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:cfa559dde23f44738f9990739aaa3487d8df3af37eb5df0572f7cf76004a604a" "/opt/rustwide/cargo-home/bin/cargo" "+d9563937fa3b030c5845811113505070109414d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 566f668d36dd3dad5153a60f44a4be0120efeaa39cbbf4da02f9e3c9d8e4daec
[INFO] running `Command { std: "docker" "start" "-a" "566f668d36dd3dad5153a60f44a4be0120efeaa39cbbf4da02f9e3c9d8e4daec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "566f668d36dd3dad5153a60f44a4be0120efeaa39cbbf4da02f9e3c9d8e4daec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "566f668d36dd3dad5153a60f44a4be0120efeaa39cbbf4da02f9e3c9d8e4daec", kill_on_drop: false }`
[INFO] [stdout] 566f668d36dd3dad5153a60f44a4be0120efeaa39cbbf4da02f9e3c9d8e4daec
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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:cfa559dde23f44738f9990739aaa3487d8df3af37eb5df0572f7cf76004a604a" "/opt/rustwide/cargo-home/bin/cargo" "+d9563937fa3b030c5845811113505070109414d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f6a8afebd86a97b39958e563e8617925cdeabb4d02d9cc84050d77f0ea1ec032
[INFO] running `Command { std: "docker" "start" "-a" "f6a8afebd86a97b39958e563e8617925cdeabb4d02d9cc84050d77f0ea1ec032", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.56
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking windows-targets v0.42.1
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.56/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] [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" "f6a8afebd86a97b39958e563e8617925cdeabb4d02d9cc84050d77f0ea1ec032", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f6a8afebd86a97b39958e563e8617925cdeabb4d02d9cc84050d77f0ea1ec032", kill_on_drop: false }`
[INFO] [stdout] f6a8afebd86a97b39958e563e8617925cdeabb4d02d9cc84050d77f0ea1ec032