[INFO] fetching crate concurrent 0.2.2...
[INFO] documenting concurrent-0.2.2 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate concurrent 0.2.2 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate concurrent 0.2.2 on toolchain 1.61.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate concurrent 0.2.2
[INFO] finished tweaking crates.io crate concurrent 0.2.2
[INFO] tweaked toml for crates.io crate concurrent 0.2.2 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6d5631104a0eb23e0f6d8b5bcbd5743b891f11f9b00e21d6dc96c5419593b598
[INFO] running `Command { std: "docker" "start" "-a" "6d5631104a0eb23e0f6d8b5bcbd5743b891f11f9b00e21d6dc96c5419593b598", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6d5631104a0eb23e0f6d8b5bcbd5743b891f11f9b00e21d6dc96c5419593b598", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6d5631104a0eb23e0f6d8b5bcbd5743b891f11f9b00e21d6dc96c5419593b598", kill_on_drop: false }`
[INFO] [stdout] 6d5631104a0eb23e0f6d8b5bcbd5743b891f11f9b00e21d6dc96c5419593b598
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "RUSTDOCFLAGS=--cap-lints=warn" "-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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 19b470ac2b91a360a61751cad57cc9d88cac9d3765b579fae62c653ca91ae4cc
[INFO] running `Command { std: "docker" "start" "-a" "19b470ac2b91a360a61751cad57cc9d88cac9d3765b579fae62c653ca91ae4cc", kill_on_drop: false }`
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/spin-0.4.10/src/lib.rs:6:43
[INFO] [stdout]   |
[INFO] [stdout] 6 | #![cfg_attr(feature = "const_fn", feature(const_fn))]
[INFO] [stdout]   |                                           ^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: split into finer-grained feature gates
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]     Checking spin v0.4.10
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking lazy_static v0.2.11
[INFO] [stdout] For more information about this error, try `rustc --explain E0557`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `spin` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "19b470ac2b91a360a61751cad57cc9d88cac9d3765b579fae62c653ca91ae4cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "19b470ac2b91a360a61751cad57cc9d88cac9d3765b579fae62c653ca91ae4cc", kill_on_drop: false }`
[INFO] [stdout] 19b470ac2b91a360a61751cad57cc9d88cac9d3765b579fae62c653ca91ae4cc