[INFO] fetching crate ampc 0.5.0-alpha...
[INFO] checking ampc-0.5.0-alpha against nightly-2024-02-05 for check-cfg
[INFO] extracting crate ampc 0.5.0-alpha into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate ampc 0.5.0-alpha on toolchain nightly-2024-02-05
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly-2024-02-05" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ampc 0.5.0-alpha
[INFO] finished tweaking crates.io crate ampc 0.5.0-alpha
[INFO] tweaked toml for crates.io crate ampc 0.5.0-alpha written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate crates.io crate ampc 0.5.0-alpha 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" "+nightly-2024-02-05" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded unicode-ident v1.0.9
[INFO] [stderr]   Downloaded proc-macro2 v1.0.59
[INFO] [stderr]   Downloaded cranelift-codegen-shared v0.94.1
[INFO] [stderr]   Downloaded regalloc2 v0.6.1
[INFO] [stderr]   Downloaded windows-targets v0.48.0
[INFO] [stderr]   Downloaded is-terminal v0.4.7
[INFO] [stderr]   Downloaded fallible-iterator v0.2.0
[INFO] [stderr]   Downloaded errno v0.3.1
[INFO] [stderr]   Downloaded termcolor v1.2.0
[INFO] [stderr]   Downloaded slice-group-by v0.3.1
[INFO] [stderr]   Downloaded anstyle-parse v0.2.0
[INFO] [stderr]   Downloaded cranelift-frontend v0.94.1
[INFO] [stderr]   Downloaded clap v4.3.2
[INFO] [stderr]   Downloaded bumpalo v3.13.0
[INFO] [stderr]   Downloaded clap_builder v4.3.1
[INFO] [stderr]   Downloaded syn v2.0.18
[INFO] [stderr]   Downloaded windows_x86_64_gnullvm v0.48.0
[INFO] [stderr]   Downloaded libc v0.2.144
[INFO] [stderr]   Downloaded windows_x86_64_gnu v0.48.0
[INFO] [stderr]   Downloaded linux-raw-sys v0.3.8
[INFO] [stderr]   Downloaded windows_aarch64_msvc v0.48.0
[INFO] [stderr]   Downloaded cranelift-codegen v0.94.1
[INFO] [stderr]   Downloaded cranelift-native v0.94.1
[INFO] [stderr]   Downloaded windows_i686_gnu v0.48.0
[INFO] [stderr]   Downloaded cranelift v0.94.1
[INFO] [stderr]   Downloaded cranelift-module v0.94.1
[INFO] [stderr]   Downloaded cranelift-object v0.94.1
[INFO] [stderr]   Downloaded slot-arena v0.1.0
[INFO] [stderr]   Downloaded gimli v0.27.2
[INFO] [stderr]   Downloaded windows_x86_64_msvc v0.48.0
[INFO] [stderr]   Downloaded cranelift-entity v0.94.1
[INFO] [stderr]   Downloaded windows_i686_msvc v0.48.0
[INFO] [stderr]   Downloaded cranelift-bforest v0.94.1
[INFO] [stderr]   Downloaded rustix v0.37.19
[INFO] [stderr]   Downloaded windows_aarch64_gnullvm v0.48.0
[INFO] [stderr]   Downloaded object v0.30.3
[INFO] [stderr]   Downloaded cranelift-isle v0.94.1
[INFO] [stderr]   Downloaded quote v1.0.28
[INFO] [stderr]   Downloaded once_cell v1.17.2
[INFO] [stderr]   Downloaded ahash v0.8.3
[INFO] [stderr]   Downloaded anyhow v1.0.71
[INFO] [stderr]   Downloaded cranelift-codegen-meta v0.94.1
[INFO] [stderr]   Downloaded io-lifetimes v1.0.11
[INFO] [stderr]   Downloaded clap_derive v4.3.2
[INFO] [stderr]   Downloaded log v0.4.18
[INFO] [stderr]   Downloaded anstyle-wincon v1.0.1
[INFO] [stderr]   Downloaded hermit-abi v0.3.1
[INFO] [stderr]   Downloaded target-lexicon v0.12.7
[INFO] [stderr]   Downloaded anstyle v1.0.0
[INFO] [stderr]   Downloaded unicode-width v0.1.10
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+nightly-2024-02-05" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 12b0ce02e77f49b6affd680e4f2ed6ecb6da1b12d453c08e3d5b3865eea345c2
[INFO] running `Command { std: "docker" "start" "-a" "12b0ce02e77f49b6affd680e4f2ed6ecb6da1b12d453c08e3d5b3865eea345c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "12b0ce02e77f49b6affd680e4f2ed6ecb6da1b12d453c08e3d5b3865eea345c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "12b0ce02e77f49b6affd680e4f2ed6ecb6da1b12d453c08e3d5b3865eea345c2", kill_on_drop: false }`
[INFO] [stdout] 12b0ce02e77f49b6affd680e4f2ed6ecb6da1b12d453c08e3d5b3865eea345c2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+nightly-2024-02-05" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 247e270f0c7744f7109435b464dd96805be142fd7b1081b4babee14b8acf3e68
[INFO] running `Command { std: "docker" "start" "-a" "247e270f0c7744f7109435b464dd96805be142fd7b1081b4babee14b8acf3e68", kill_on_drop: false }`
[INFO] [stderr]    Compiling ahash v0.8.3
[INFO] [stderr]     Checking once_cell v1.17.2
[INFO] [stderr]    Compiling cranelift-isle v0.94.1
[INFO] [stderr]    Compiling log v0.4.18
[INFO] [stderr]    Compiling cranelift-codegen-shared v0.94.1
[INFO] [stderr]     Checking hashbrown v0.12.3
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling libc v0.2.144
[INFO] [stderr]    Compiling cranelift-codegen-meta v0.94.1
[INFO] [stderr]    Compiling target-lexicon v0.12.7
[INFO] [stderr]     Checking fxhash v0.2.1
[INFO] [stderr]     Checking smallvec v1.10.0
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]     Checking fallible-iterator v0.2.0
[INFO] [stderr]     Checking slice-group-by v0.3.1
[INFO] [stderr]     Checking hashbrown v0.13.2
[INFO] [stderr]     Checking cranelift-entity v0.94.1
[INFO] [stderr]    Compiling io-lifetimes v1.0.11
[INFO] [stderr]     Checking cranelift-bforest v0.94.1
[INFO] [stderr]     Checking regalloc2 v0.6.1
[INFO] [stderr]     Checking gimli v0.27.2
[INFO] [stderr]     Checking bumpalo v3.13.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.59
[INFO] [stderr]    Compiling rustix v0.37.19
[INFO] [stderr]    Compiling quote v1.0.28
[INFO] [stderr]     Checking linux-raw-sys v0.3.8
[INFO] [stderr]    Compiling unicode-ident v1.0.9
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/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]    Compiling anyhow v1.0.71
[INFO] [stdout] error: aborting due to 1 previous error
[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 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "247e270f0c7744f7109435b464dd96805be142fd7b1081b4babee14b8acf3e68", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "247e270f0c7744f7109435b464dd96805be142fd7b1081b4babee14b8acf3e68", kill_on_drop: false }`
[INFO] [stdout] 247e270f0c7744f7109435b464dd96805be142fd7b1081b4babee14b8acf3e68
[INFO] checking ampc-0.5.0-alpha against nightly-2024-02-05+rustflags=-Dunexpected_cfgs+cargoflags=-Zcheck-cfg for check-cfg
[INFO] extracting crate ampc 0.5.0-alpha into /workspace/builds/worker-3-tc2/source
[INFO] validating manifest of crates.io crate ampc 0.5.0-alpha on toolchain nightly-2024-02-05
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly-2024-02-05" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ampc 0.5.0-alpha
[INFO] finished tweaking crates.io crate ampc 0.5.0-alpha
[INFO] tweaked toml for crates.io crate ampc 0.5.0-alpha written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate crates.io crate ampc 0.5.0-alpha 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" "+nightly-2024-02-05" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+nightly-2024-02-05" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bae5f7cbb2d7ecdaa434b7b7e441ca112a5c4cd94a7a6f00b6bf23fae7aa38cb
[INFO] running `Command { std: "docker" "start" "-a" "bae5f7cbb2d7ecdaa434b7b7e441ca112a5c4cd94a7a6f00b6bf23fae7aa38cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bae5f7cbb2d7ecdaa434b7b7e441ca112a5c4cd94a7a6f00b6bf23fae7aa38cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bae5f7cbb2d7ecdaa434b7b7e441ca112a5c4cd94a7a6f00b6bf23fae7aa38cb", kill_on_drop: false }`
[INFO] [stdout] bae5f7cbb2d7ecdaa434b7b7e441ca112a5c4cd94a7a6f00b6bf23fae7aa38cb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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 -Dunexpected_cfgs" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+nightly-2024-02-05" "check" "--frozen" "--all" "--all-targets" "--message-format=json" "-Zcheck-cfg", kill_on_drop: false }`
[INFO] [stdout] 6149e188d7c7065461372fcec91169ba3795600e3a803f17a0e8114aa65c67d7
[INFO] running `Command { std: "docker" "start" "-a" "6149e188d7c7065461372fcec91169ba3795600e3a803f17a0e8114aa65c67d7", kill_on_drop: false }`
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling ahash v0.8.3
[INFO] [stderr]     Checking once_cell v1.17.2
[INFO] [stderr]    Compiling cranelift-isle v0.94.1
[INFO] [stderr]    Compiling cranelift-codegen-shared v0.94.1
[INFO] [stderr]     Checking hashbrown v0.12.3
[INFO] [stderr]    Compiling log v0.4.18
[INFO] [stderr]    Compiling libc v0.2.144
[INFO] [stderr]    Compiling cranelift-codegen-meta v0.94.1
[INFO] [stderr]    Compiling target-lexicon v0.12.7
[INFO] [stderr]     Checking fxhash v0.2.1
[INFO] [stderr]     Checking cranelift-entity v0.94.1
[INFO] [stderr]     Checking fallible-iterator v0.2.0
[INFO] [stderr]    Compiling io-lifetimes v1.0.11
[INFO] [stderr]     Checking hashbrown v0.13.2
[INFO] [stderr]     Checking slice-group-by v0.3.1
[INFO] [stderr]     Checking smallvec v1.10.0
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]     Checking cranelift-bforest v0.94.1
[INFO] [stderr]     Checking regalloc2 v0.6.1
[INFO] [stderr]     Checking gimli v0.27.2
[INFO] [stderr]    Compiling proc-macro2 v1.0.59
[INFO] [stderr]    Compiling rustix v0.37.19
[INFO] [stderr]     Checking bumpalo v3.13.0
[INFO] [stderr]     Checking linux-raw-sys v0.3.8
[INFO] [stderr]    Compiling unicode-ident v1.0.9
[INFO] [stderr]    Compiling quote v1.0.28
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/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] [stdout] error: aborting due to 1 previous error
[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 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "6149e188d7c7065461372fcec91169ba3795600e3a803f17a0e8114aa65c67d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6149e188d7c7065461372fcec91169ba3795600e3a803f17a0e8114aa65c67d7", kill_on_drop: false }`
[INFO] [stdout] 6149e188d7c7065461372fcec91169ba3795600e3a803f17a0e8114aa65c67d7
